In addition to the performance of the breeding sheep, the individual identification of the breeding sheep is also an important basis. The basic ewes are usually identified once a year, and the rams are usually carried out once in the 1.5 to 2 years old. Identification of breeding sheep includes age identification and appearance identification. (1) Age identification is the basis for other assessments. Sheep of different ages have different performance, body type, and identification criteria. The more reliable age identification method is still dental identification. There are 32 teeth in the adult sheep. There are 12 maxillary jaws, 6 on each side. The upper jaw has no incisors, and the lower jaw has 20 teeth. Among them, 12 are molars, 6 on each side, and 8 are incisors, also called incisors. The use of teeth to identify the age is mainly based on the occurrence of the mandibular incisor, replacement, wear, fall off to judge. The lamb had 6 milk teeth at birth, about 8 milk teeth at 1 month old, and about 15 years old, the crowns of the milk teeth had a certain degree of wear, and the pincers fell off, and the first pair of permanent teeth grew along with the original part. At the age of 2 years, the middle teeth are replaced, and the second pair of permanent teeth are grown; at the age of 3, the fourth pair of milk teeth is replaced with permanent teeth; at the age of 4 years, the chewing surfaces of the 8 incisors are ground flatter, commonly known as Qikou. At the age of 5, it was possible to see individual teeth with obvious tooth stars, indicating that the crowns of teeth had been thoroughly ground and the pulp was exposed; at the age of 6 years, the teeth had been grinded to the neck, and there were obvious gaps between the incisors; at the age of 7 The gap is bigger and there is a hole phenomenon. In order to facilitate memory, summed up the jingle: One year and a half, in the tooth change; to two years old, for two pairs; two and a half years, three pairs of full; three years old, teeth change; four grinding flat; five teeth star; six Sew; seven exposed holes; eight loose; nine teeth; ten exhausted. (2) Body Appearance Identification The purpose is to determine the cultivar characteristics, breeding value and productivity of mutton sheep. Body size assessment is often determined by body measurements and body ulnar index calculations are used to assess. Measurements are: body height, the distance from the highest point of the shoulder to the ground. Body length, take the horizontal distance from the midpoint to the tail root of the two ears. Bust, the length of one week after transthoracic scapula. For the circumference of the tube, take the length of the finest part of the forelimb tube at the top 1/3 of the tube. Legs and hips, protruding from the anterior edge of the left posterior knee, traversing the two posterior segments to the right half of the posterior edge of the posterior knee. In order to measure the body structure of mutton sheep, compare the relative development of various parts, and evaluate meat production performance, body size index is generally calculated: body length index = body length/body height; body body index = bust/body length; bust index = chest/body height Bone index = tube circumference/body height; meat production index = leg hip circumference/body height; fatness index = body weight/body height. 2. What should you watch out for when introducing a mutton sheep? (1) Pay attention to adaptability. The climatic, geomorphological, vegetation, and feeding and management standards of the origin of the introduced sheep are similar to those of the local environment, so as to adapt to the environment as soon as possible and reduce the time for domestication of terroirs. For new cultivars or foreign introduced varieties, we must carefully review the data and evaluate the adaptability. If the adaptability is good, promotion can be introduced in large quantities. (2) Note the epidemic control. The introduction unit must carefully examine the health status of the sheep and observe whether there are symptoms such as cough. The best way is to first select the sheep, send people to live in the sheep farm, observe for a period of time to confirm the health of the sheep and then pay for them. After the arrival of the sheep, it must be isolated for 2 weeks to 3 weeks before entering the farm for breeding. (3) Pay attention to the introduction season. Introduced sheep are stressed by long-distance transportation and need to restore their physique and adapt to the new environment. If it is introduced in winter, the water is cold and the grass is dry, the weather is bad, and the survival rate of the introduced sheep is low. In summer, when it is hot and rainy, the relative humidity is large, and the sheep are afraid of heat and moisture. In summer, grazing and transportation are prone to heat stroke, so spring and autumn are most suitable for introduction. 3. How to choose the breeding period of mutton sheep? The breeding period of mutton sheep is mainly determined by the survival of the lamb and the health of the mother. When lambs are produced once a year, the lambing time can be divided into two types, winter lambs and spring lambs. Usually, lambs from July to September and from December to January to February are called winter lambs; lambs from October to December and from March to May of the following year are called spring lambs. Winter lambs or spring lambs should be selected according to the climate and technical conditions of the region. In areas where the climate and feeding management conditions are good, Mian goats can be estrus and breed throughout the year. In this case, the choice of breeding period is mainly determined by factors such as the recovery and development of the ewes and lambs, the improvement of product quality, production arrangements and organization. 4. How to improve sheep's fertility? (1) Select the offspring of multiple litter sheep. The reproductive power of mutton sheep is hereditary. Usually, if the ewes produce twin lambs at the time of the first child, such ewes will have higher repeatability of producing twin lambs in later births. (2) Raise the nutritional level of breeding rams and breeding ewes. Under the same genetic conditions, the external environment has an effect on fertility, of which the role of feeding and management is greater. For male rams, good breeding conditions are basic feeding requirements. In the production of mutton sheep, at least the ewes should be properly bred and managed in the later stages of gestation and lactation in order to increase the fecundity of the sheep. (3) Adjust the herd structure and increase the proportion of able to breed ewes. Herd structure mainly refers to the gender structure and age structure in the herd. In terms of gender, there are three types of rams, ewes and mutton sheep. The higher the proportion of ewes, the better; from an age point of view, the proportion of individuals from younger to older is gradually reduced, so that the herds are highly productive. status. Raising the number of fertile hens in a herd can increase herd reproduction. (4) Use immunization to increase fertility. Immunity is the physiological function of identifying and removing "different" substances so as to balance the internal and external environment of the organism. 5. What are the characteristics of the behavior of the sheep at delivery and what should be noted? The ewes swelled and the nipples stood upright before delivery. A small amount of yellow colostrum can be squeezed out by hand. The pus is swollen and flushed, sometimes with thick mucus. The ligaments in the pelvis are loose, and are most pronounced 2 to 3 hours before delivery. The ewe’s spirits are disturbed, frequently lying and lying, sometimes hoofing, increasing the frequency of urination, reviewing the abdomen from time to time, often standing alone in the corner of the wall, straightening the limbs. Grazing ewes often fall behind or rest in the ground. The ewe’s responsibility is to lie down at the beginning and the white translucent vesicle formed by the amnion chor- icals protrudes into the vulva. The membrane is filled with amniotic fluid and the fetus. Amniotic membrane chorion rupture after amniotic fluid discharge, a few minutes to 30 minutes output fetus. Normally, the normal lamb's lamb is born with two forelegs and the head first, and the head is close to the two forelimbs. If they are twins, they are separated by 5 minutes to 30 minutes before and after, and very few have more than several hours. The fetus is discharged 2 to 4 hours after birth. During the lamb's lambing, it is best to allow it to give birth. After the lambs are produced, first wipe the mucus of the oral cavity and nasal cavity to avoid breathing, difficulty in swallowing the amniotic fluid, or asphyxiation or foreign body pneumonia. The mucus on the lamb should be drained as soon as possible so that the blood circulation of the newborn lamb can be promoted, and it can also help the ewes recognize the lamb. After the lamb is born 0.5 to 3.0 hours, it is discharged from the placenta, and the discharged placenta is removed in time to prevent it from being swallowed by the ewes to develop bad habits. 6. What is the key to nurturing a robust lamb? After the lamb is born, the body is weak, the adaptability is poor, the resistance is low, and it is easy to die. Therefore, according to the digestive physiology and biological characteristics of lambs, eat colostrum as early as possible, eat colostrum, grasp the cultivation and nursing of lambs in the colostrum and lactation phases, pay attention to thermal insulation and disease prevention, and reduce weaning stress. It is the key to improving the survival rate of lambs. 7. What are the environmental factors affecting the estrus of mutton sheep and the characteristics of estrus cycle and sexual behavior? The estrus period of mutton sheep is the result of a combination of environmental factors such as seasonality, light, latitude, altitude, temperature, and nutritional status. Seasonality is the main environmental factor affecting the estrus of mutton sheep. Seasonal estrus in sheep is the result of long-term natural selection and is a concrete manifestation of adaptation to the environment. Under normal circumstances, there are estrus performances in the summer, autumn and winter three seasons. After reaching the sexual maturity, the ewes have periodic ovulation on their ovaries. The estrus of sheep is 24 hours to 26 hours, the average estrus cycle is 17 days, and the estrus of goats is 24 hours to 28 hours. The estrus cycle is average. It is 21 days. Rams' sexual behaviors include sexual urges, courtship, penile erection, crawling, penetration of the penis into the vagina, ejaculation, and withdrawal from the ewes. The intensity of sexual behavior in rams is influenced by factors such as nutritional status, health status, hormone levels, nerve types, and seasons and climate. Ewes have a close relationship with estrogen and progesterone levels. In estrus, estrogen stimulates the sexual center of the ewes with the participation of a small amount of progesterone. At this time, the ewes will have sexual behavior, sexual excitement, a series of changes in the reproductive tract, follicular development and ovulation and other behavioral and physiological responses. 8. What are the characteristics of the structure and digestive function of the digestive organs of the sheep? The sheep is a complex stomach animal. Its stomach consists of a rumen, a reticulum, a repetitive stomach, and an atrophic stomach. The rumen has a large capacity, accounting for about 80% of the complex gastric capacity. The volume of the reticulum is small, the contents of the reticulum are mixed with the rumen, and the digestive and absorptive functions are basically similar to that of the rumen, which is collectively referred to as ruminal stomach. The chyme in the ruminant stomach enters the re-stomach, where it is filtered and absorbed by the water and drained into the abomasum. Similar to the stomach of a monogastric animal, the rumen is also known as the first stomach and does not secrete digestive enzymes, but the rumen There are a large number of symbiotic bacteria and ciliates and other microorganisms. These commensal microorganisms can decompose and digest the cellulose in the feed, causing it to become low-grade volatile organic acids that are absorbed by the sheep. Microorganisms can also decompose the protein in the forage as well as the nitrogen in the urea and turn it into a bacterial protein, which is then digested and absorbed. 9. How to repair sheep? If the hooves are not repaired for a long period of time, the horny growth will be too long or deformed, which will affect the walking and rot, causing the limbs to deform and cause loss of appetite. Hoofing is usually done in spring and summer, but it can also be done after the rain. Pay attention to the sheep being kept on dry ground for a few days after dressing. The way to fix hoof is to make the buttocks of the sheep sit on the ground with their extremities facing outwards. One person will hold the sheep's two forelegs behind the sheep and control the sheep; one person's left hand will hold the leg of the goat's leg to be trimmed. Hold the pruning shears in your right hand, cut off the horny part, and then use the hoof knife to trim the horny around the hoof and make it near the bottom of the hoof. Do not over-repair so as not to bleed or cause limp. For pregnant ewes in the month of pregnancy, standing Baoding hoof repair to prevent struggling to cause miscarriage. 10. How to raise and manage sheep? After the lambs are weaned from 3 months to 4 months of age, the male and female ewes that first bred and bred are bred into sheep. In the first year after its birth, the sheep had the highest growth intensity and fastest growth. For the rearing aquaculture, the crude protein content of the concentrate in the bred sheep diet is increased to 15% or 16%, and the energy level in the mixed concentrate is about 70% of the total dietary energy. About 0.4 kg of refined feed is fed every day. At the same time, roughage such as hay, silage, and tubers is required. 11. How to raise and manage rams? The breeding of rams requires the maintenance of medium and high sensation all year round, the principle of being strong, lively, energetic, and strong in sexual desire. Breeding period of breeding: The preparation period for breeding (1 month to 1.5 months), breeding period and breeding rejuvenation period. The preparatory period for breeding should be given at 60% to 70% of the amount of feeding during the breeding period, starting from 0.3 kg to 0.5 kg of supplemental concentrate per day and gradually increasing to the breeding level during the breeding period. Feeding rams should be fed 1.2 kg to 1.5 kg of mixed concentrate, 1 kg to 2 kg of hay, 1.5 kg of silage each day, and pay attention to supplements of minerals and vitamins. Rams should be grazing and feeding in separate groups to avoid polyculture. The rams during the breeding period should be kept away from the sheds and kept alone to reduce the mutual interference between the ewes and rams. The rams of the year and the adult rams were also raised separately so as not to cross each other and affect development. The breeding of male rams during non-breeding periods aims to restore and maintain their good body condition. In the one month to two months immediately after the end of breeding, the ram's diet should be basically the same as the breeding season, but the composition of the diet can be adjusted appropriately to increase the proportion of high-quality green hay or green succulent feed. , And according to the recovery of body condition, it is gradually changed to feeding non-breeding diet. 12. How should adult ewes be reared and managed? (1) Breeding before breeding. 15 months before mating, the ewes shall be strengthened to feed, scratch and rejuvenate, and provide adequate nutrition for breeding and pregnancy. For short-sighted sheep, give short-term excellent feeding, that is, feed the best forage, and supply the best concentrate. (2) Feeding during gestation. The pregnancy period is 150 days and can be divided into pre-pregnancy and late pregnancy. Pre-pregnancy (3 months after pregnancy): In this period, the fetus develops slowly and requires less nutrients, but it is required to continue to maintain good sensation. The diet can consist of 50% green grass or hay, 40% silage or micro-grain, and 10% concentrate. Late pregnancy (2 months after pregnancy): During this period, the fetus grows rapidly, of which 80% to 90% of the birth weight is growing at this time. To meet the nutritional needs of the ewes during the second trimester of pregnancy, grazing alone is not enough, and it is necessary to supplement certain mixed concentrates and high quality hay. Each sheep was supplemented daily with 0.45 kg of mixed concentrate, 1 kg to 1.5 kg of hay, and 1 kg of silage. (3) Feeding during lactation. The lactation period is about 4 months and it is divided into pre-lactation period and post-lactation period. The pre-lactation period is 2 months after the birth of the lamb. At this time, the nutrition of the lamb is mainly dependent on breast milk. Lambs need about 5 kg of breastmilk for each additional kilogram of body weight. To meet the needs of lambs for rapid growth, ewe feeding must be strengthened to increase milk production. As much as possible to provide quality forage, silage or micro-storage, juicy feed, fine material than the slightly increased during the late pregnancy, drinking water should be sufficient. Ewe’s lactation peaked at 40 days postpartum and began to decline at 60 days. This lactation pattern is consistent with the gastrointestinal function development of the lamb. After 60 days, as the amount of lactation decreased, the ruminal microflora of the lamb gradually formed, and the ability to use feeds gradually increased. It has shifted from the breast-dominated stage to the feed-based stage, at which point it enters the late lactation phase of the ewes. . In the late period of lactation, lambs have been able to feed on feed, and their dependence on breast milk has been reduced. Feeding should be based on forage, silage, or micro-storage. Feeding of concentrates can be reduced. 13. How to strengthen post-natal ewes feeding and management? First of all, we must keep the sheep body and sanitation. Lambs should be immediately cleaned of fetal clothing, contaminated bedding, feces and ground, replaced with clean dry grass, and scrubbed the contaminated parts of the hindquarters, tail, and breasts with warm soapy water. , And then use potassium permanganate disinfectant to clean once, wipe dry. And pay attention to keep warm, replace the bedding, prevent thieves, to prevent colds, rheumatism and other diseases. Second, pay attention to drinking warm water. When the ewes rest for half an hour after giving birth, they should drink 1 brown sugar, 5 bran, 10-20 parts of brown sugar bran water, and then feed some easy-digestible quality hay to keep warm. After 5 days, the feed of concentrates and succulent feeds was gradually increased and returned to normal feeding levels after 15 days. 14. Why do pregnant ewes feed in phases? It is mainly determined by the different stages of development of the fetus. The growth and development of the fetus is generally divided into early and late stages. The first three months of the previous period, the early fetal heart, liver, lungs and other various organs, its growth is slow, only about 10% of primary weight, so this phase of the demand for a variety of nutrients is not. During the second month after fetal development, tissues such as bones, muscles, and skin grow rapidly, and their weight increases rapidly. This period accounts for about 90% of the birth weight, so this period requires a lot of nutrients. In particular, it forms bones and muscles. 15. How to cultivate lambs? (1) Colostrum (primary to fifth day). The milk within 5 days after the ewes are called colostrum is rich in protein, fats, vitamins, inorganic salts, and other nutrients and antibodies. The lambs eat colostrum in time after birth, and they have the right to strengthen their physique, resist diseases, and excrete fetuses. Very important role. (2) Regular lactation (6 days to 60 days). Regular milk is the milk produced by the ewes from the sixth day after birth until the dry period. It is a nutritious food. Therefore, the lamb must be eaten well. From the 10th day of age, he began to replenish hay and train to eat; after 15 days of age, he began to feed and feed the lambs in the feeding trough, which was burned with boiling water; and started to reduce milk from the 40th day of age. Increase forage. (3) The transition period between milk and forage (60 days to 90 days). This stage should pay attention to the energy of the diet, protein nutrition level and full price. The amount of milk in the later period is continuously decreasing, with high quality hay and concentrates as the main ingredient. Milk is only used as a protein supplement feed. Early weaning should be implemented for well-developed lambs. 16. How is the lamb's early weaning time selected? The early weaning of lambs is based on conventional weaning at the age of 3 months to 4 months, shortening the period of lactation to 40 days to 60 days, and using the characteristics that the lambs grow fastest in 4 months of age, will be early weaning Lambs are fattened to give full play to their advantages so that they can reach fattening goals in a shorter period of time. Lambs from 3 months of age, breast milk can only meet the nutritional needs of lambs from 5% to 10%. The early weaning time depends on the body condition of the lamb, which is generally 2 months to 3 months. Time for early weaning of lambs: weaning at 1 week after birth, lambing at 1 week after birth, artificial lamb raising with milk replacer; weaning at 40 days after birth, weaning at 40 days after birth, and feeding fodder and grazing completely. Early weaned lambs must eat colostrum for 1 to 3 days. 17. What are the technical points for early weaning? (1) Make up as soon as possible. One week after birth, the lamb begins to follow the ewes to learn to eat young leaves or feed. In the 15th to the 20th day of age, we must begin to set up a feeding bar to train to eat hay, in order to promote the development of the rumen. After 1 month of age, they were allowed to feed on dietary foods, dietary materials were easily digestible, soft and fragrant, and a feeding trough supplemented with salt and bone meal was provided to promote free food intake. (2) To wean gradually. Lambs are planned to be together with the ewes 10 days before weaning. The lambs are separated from the ewes during the day. The lambs are allowed to move in the supplemental columns provided with fine feed troughs and drinking troughs, and the floor of the lambs' activities should be dry. Rainproof, good ventilation. (3) Epidemic prevention. The common infectious diseases of lamb fattening include intestinal venom disease and hemorrhagic septicemia. It can be used to prevent the ewes from being injected before lambing, or injected into the lambs before weaning. 18. How to supplement ewes and lambs? Supplementation of ewes should focus on late pregnancy and lactation. The short-term supplementation is performed on the ewes 15 to 20 days before they are bred. Each replenishment concentrate contains 100-250 g of feed each day. Supplements include corn, bran, cottonseed meal, and soybean meal. Under normal circumstances, the lambs are fenced for supplements. That is, at the end of the shed of the ewes, a supplementary feeding bar is set up, and a supplementary feeding bar is designed for each lamb of 0.5 m2, with a straw rack, a feeding trough, and a sink. The feeding and unloading bar is 20 cm to 25 cm wide and 40 cm to 50 cm high. It is only for lambs to enter and exit, and the ewe cannot enter. The lamb began to feed at 15 days of age. At this time, the lamb also learned some forages along with the ewe, but there was no love for the forage grass. At the beginning of feeding, put some prepared starter food in the feeding tank, the amount is less, the leftovers that can't be eaten on that day should be cleaned up at night, and the new material should be put on the next day. After the lamb learns to eat, it is supplemented twice a day. The amount of lambs per lamb can be eaten within 20 minutes to 30 minutes. In addition to regular feeding of starter feed, high quality hay such as alfalfa should be placed in the grass rack for lambs to feed freely. Supplementary feeding of double lamb should pay more attention. 19. What is the rearing and management method for lamb fattening after weaning? Lambs should be fed a pre-feeding diet for about 10 days before being transferred to a silage-finishing diet. At the beginning, the amount of feed was appropriately controlled and increased day by day, and the total amount of feed was reached in about 7 days. Should be strictly in accordance with the diet formula, the mixing must be uniform, especially limestone powder is indispensable. Lambs should eat more than 2.5 kg on a daily basis. The feed must be weighed and cannot be weighed. Lamb early weaning and finishing technology has the characteristics of low investment, high output, simple method, etc. It can make full use of the favorable conditions for high conversion rate of early-aged lambs. Lambs were weaned from 2 months to 3 months of age. After weaning, the lambs are transferred to finishing pens. The ewes can be removed conditionally, and the lambs are kept in the original pens for 15 days to 20 days before being transferred to finishing pens. When transferring to a finishing pen, it is best to turn in at night so that the lamb is less stressed. According to the size of the lamb, fat, strength and weakness, grouping for management. The lambs were transferred to the finishing pens in groups, one week after the intermittent feeding of the original forage feeds, the excelled lambs were selected for preparation and reserved for species use, and transferred to the reserve group for rearing. The rest of the lambs to be fattened gradually began to change their finishing feeds and used feedstuffs for 10 to 14 days to turn the feed completely into fattening feed. At this time sheep lambs should be sheared. The shearing should be performed on a sunny day. Debriding should be carried out for 3 days to 5 days after the hair cutting, and then 7 days to 10 days before deworming. 20. What is the fast fattening technique for weaning lambs? Lamb fattening after weaning is the main method of lamb production. Under normal circumstances, lambs with small body weight or poor body condition are moderately fattened, and fattening is performed with good body weight or good body condition. This type of technology is flexible and diverse, and can be selected according to the local pasture conditions and lamb type, such as the intensity of fattening or general fattening, grazing, fattening, or fattening, etc.; according to the fattening plan, local conditions and weight gain requirements, choose the full type, Roughage type and silage type fattening, and treated separately in feeding and management. (1) Full concentrate feed fattening. Applicable to about 35 kg of robust lamb fattening, through the strength of fattening, 50 days to reach 48 kg to 50 kg market weight. It is recommended that the diet should be formulated mainly with corn pod-type diets. The main points for feeding and management should ensure that the lambs eat an additional 45 grams to 90 grams of roughage per day. They can feed a small amount of straw individually, or they can use the straw as a mat, but the pad The grass needs to be changed every day. (2) Roughage diets and fattening. According to the feeding mode, it can be divided into two types: common feeding trough and automatic feeding trough. The former is to feed concentrate and coarse material separately, and the latter is full-grain feed that mixes coarse and coarse materials together. In order to reduce feed wastage, it is recommended that large-scale, intensive sheep farms use automatic feeders for feeding roughage-type diets. Food preparation: corn 58.75%, hay 40%, soybean cake 1.25%, plus antibiotic 1%. The dried feed contains 11.37% of crude protein, 67.10% of total digestive nutrients, 0.46% of calcium, 0.26% of phosphorus, and an aspect ratio of 60:40. Feeding and management points: The main use of hay for legumes is legumes, and the crude protein content is not less than 14%. The formulated diet should be consistent in color, especially the spiked corn must be crushed, which is difficult for lambs to use. Jump out of corn kernels, the commonly used sieve is 0.65 cm. In accordance with the principle of gradual change, let the lamb gradually into the full amount of fattening diet, each lamb daily feed amount according to 1.5 kg standard. (3) Silage-type dietary fattening. Mainly corn silage, can account for 67.5% to 87.6% of the diet. Generally silage methods are difficult to apply to the early fattening lambs and lambs of short-term strength fattening lambs, but if silage, whole plant corn, molasses, sugar beet pulp and other raw silage are selected, and their proportion in the diet is properly reduced, it can also be used for strength fattening. Diet formula: 27% corn, 67.5% corn silage, 5% soybean cake, 0.5% limestone powder, vitamin A and vitamin D were 1100 international units and 110 international units, antibiotic 11 milligrams. The dried feed of this formula contained 11.31% of crude protein, 70.9% of total digestive nutrients, 0.47% of calcium, and 0.29% of phosphorus. The ratio of crude to crude was 67:33. 21. What issues should be noticed when grazing sheep? Appropriate grazing can effectively increase the physique of the sheep, and at the same time it is beneficial to the sheep. When grazing, attention should be paid to the following points: Pay attention to changes in the weather. Do not grazing on rainy days to prevent the flock from getting sick. During the morning grazing, wait until the dew on the pasture is allowed to dry before grazing. It is not too late to graze in the afternoon to avoid flocks. Eat eggs and dew to cause diarrhea in the sheep; do a pre-grazing inspection and check the flock before grazing. If you find sick sheep to be left behind for treatment, count the number of flock at the same time. The number of herds is enough to prevent the sheep from falling behind. I do not know what to do with them. With the necessary medical equipment, when the grazing road is far away, the grazing staff should carry some necessary medical equipment. In particular, it is necessary to prevent the sheep from suffering from heat stroke during the summer season. The incense can be treated, or a trocar can be used to deflate the body. Avoid drinking too much water. After the sheep has finished eating forage, the grazing staff rush the sheep to the drinking area and let the sheep stop drinking for a while before drinking. , to prevent drinking water too quickly, into the trachea, do not let the sheep drink drinking water, dirty water; pay attention to sheep mineral elements, in the grazing process, the mineral trace elements can be placed in the basin or salt Have Dong bamboo let the sheep free lick, but also increase the appetite of sheep. 22. What are the key technologies for improving sheep production? (1) Promote hybridization. In the first generation, local native sheep were used as female parents, and the use of bred sheep as male parents, and hybrid production of fat lambs, which were used in the past year, can utilize heterosis, increase meat production performance, and preserve the fine characteristics of Small Tail Han sheep. (2) Ewe pregnancy. 80% of the weight of the supplemental fetus in the later period is increased during the second trimester of pregnancy. At this time, supplementing the ewes can make up for the lack of nutrition and ensure the normal development of the fetus. For ewes supplemented at the end of pregnancy, the birth weight and weaning weight of the lambs were all higher, and the ewes had enough postpartum milk and the lambs were robust. (3) Lamb feeding. Lambs gain the fastest weight within 2 months of age, and their food is mainly milk. Therefore, it is necessary to ensure that the lamb eats enough breastmilk. After the lamb is 3 months old, the lactation of the ewes begins to drastically decrease, and the lamb's feed intake increases gradually. Therefore, the lamb supplementation should be strengthened. The quality of the grass was initially given to the lamb, so that the front stomach was exercised, the development was improved, and the feed intake was gradually increased, which was conducive to the growth and development of the lamb. (4) timely weaning. The age at which the lamb is weaned should be based on the development of the lamb and the reproductive characteristics of the ewes. Lambs are well developed, or the ewes are born 1 year and 2 can be properly weaned earlier; if the lambs are poorly developed, the breastfeeding time should be appropriately extended. Generally, weaning is appropriate when the lamb is 60 to 90 days after birth and has a body weight of 15 kg or more. At this time, the lamb can make full use of the forage material. (5) timely slaughter. Lamb growth has a certain regularity, the early growth is faster, the feed conversion rate is higher; the later growth is slower, and the feed conversion rate is reduced. Therefore, a certain period of fattening should be slaughtered in due course so as to obtain the best fattening benefit. (6) Control of parasites in vivo and in vitro. The use of drug-prevention methods for internal flooding outside the bath enables effective control of parasites that impair the normal growth and development of the sheep. Parasites can reduce the growth rate of lambs by 15% to 30%, and can even cause the death of individual sheep that are in poor condition. Prevention and control of parasites in the body is an important measure to ensure the production of fat lambs. (7) Select the appropriate growth promoter. Adding an appropriate amount of growth-promoting agent in the mutton sheep feed can increase the daily weight gain of the mutton sheep, and the effect is better. Shelled shrimps,Dried shrimps,Frozen Bamboo shrimp,Pandalus borealis,Red Shrimp,Coldwater Shrimp Zhejiang ocean family co.,ltd , https://www.ocean-family.com
Sheep farming common technical questions and answers
1. How to identify sheep, which of several ways?