First, breeding ewes feeding technology
1. Empty period. It refers to the period from the weaning of the lamb until the ewes are bred again, and also to the recovery period, about 3 months. During this period, the focus of ewes rearing is to rejuvenate and rejuvenate, and the body condition is restored to medium or above, so as to facilitate breeding. In the first condition, the pregnancies can reach 80-85% in the first condition and only 65-75% in the poor condition. Strengthen ewes breeding one and a half months before breeding, try to choose a good grassland grazing, extend the grazing time, such as poor grassland grass, when they are not enough, each sheep daily supplement 0.2-0.3 kg of mixed concentrate , To achieve more than moderate levels of nutrition, in order to promote estrus, so that the heat and tidy, improve the conception rate and double lambs rate. There are data reports: For every 1 kilogram increase in body weight before mating, the double lamb rate can be increased by 2%.
2. Pregnancy period. The gestation period of ewe is 5 months. The first 3 months are pre-pregnancy and the latter 2 months are late pregnancy.
Prenatally, the fetus develops slowly in the mother, only accounting for 10-20% of the birth weight. Ewes can maintain the weight before mating. This period coincides with autumn, which is a grass seeding period with rich nutrition. Grazing can meet the nutritional needs of ewes without supplementation.
In late pregnancy, the fetus grows and develops rapidly in the mother's body. About 80-90% of the fetus's body weight is formed in the later stage of pregnancy. It needs to provide higher nutrition, such as undernutrition. When the lamb is born with a small weight, the survival rate is low, and the lactating ability of the ewes declines. In the ewes nutrition at this time, the energy is increased by 30-40%, the protein is increased by 40-60%, the calcium and phosphorus increase 1-2 times, and the vitamin increases by 2 times. In addition to grazing, feed 0.5-1 kg of wild hay; 1 kg of silage; 0.5-1 kg of concentrate; 52% of corn, 25% of soybean cake, 18% of bran, salt, powder, bone meal, baking soda , Premix 1% each.
Management of pregnant ewes: do not feed moldy feed, do not drink frozen water, grazing can not follow the urgent rush, do not jump leap, do not crowd when entering and leaving the house, 1 week before labor can not stay away from the sheep shed, easy Immediately return to the sheep home when giving birth.
3. Breastfeeding. The lactation period is 2.5-3 months. After lamb production, the ewes should drink some warm salt water or add some bran in warm salt water to regulate the digestive function and promote the discharge of lochia. Ewes can only feed some high quality hay within 3 days after delivery, and do not feed concentrates and juicy materials to avoid indigestion or mastitis. After 3 days, they can feed a small amount of mixed concentrates and juicy materials to gradually reach the lactation period. The amount of feeding.
After lambing, the amount of lactation increased gradually. It peaks at 4-6 weeks and begins to decline after 10 weeks. The nutrition of the lamb within 20 days after delivery is completely dependent on the supply of breast milk.
The first 1.5 months after lambing is pre-lactation, the standard for ewes: 1.5 kg of wild hay, 1 kg of silage, 0.5 kg of carrot, 1-1.5 kg of mixed concentrate (52% of corn, 18% of bran, 25% of bean cake) 1% for salt, baking soda, rock meal, bone meal, and premix. After 1.5 months for the late lactation period, the ewes were raised on a standard of 1.5 kg of wild hay, 1 kg of silage, 0.5 kg of carrots, and 0.5-1 kg of mixed concentrate.
Second, breeding sheep breeding technology
Breeding sheep refers to male and female young goats (3-18 months of age) from weaning to first breeding. After 3-4 months after weaning, the growth and development are fast, the weight gain strength is high, and the requirements for feeding conditions are high.
1. Breeding techniques in the early stages of breeding. After lamb weaning, it is the growth and development of the lamb that is most vigorous. However, the function of the rumen is not perfect. The utilization rate of roughage is low, the diet is mainly concentrated, and high-quality hay and silage juicy materials are supplied. Feed only 0.2-0.3 kilograms per day (corn 50%, soybean cake 25%, rice bran 20% a, stone powder, salt, bone meal, baking soda, premix 1% each). By June, when the pastures are good in quality, the sheep can only eat 3-4 percent of their full weight each day without supplementation.
2. Rearing techniques for rearing. This period coincides with the withered grass season, the cold weather, but also the development of ewes, to maintain physical exertion, must strengthen the supplementary feeding, daily supplement each 1 kg wild hay, silage 1 kg, 0.5 kg carrots, mixed concentrates 0.4 - 0.7 kg (corn 55%. 20% soybean cake, bran 20%. Salt, powder, bone meal, baking soda, premix 1%).
Body weight is an indicator of the development of the bred sheep. Measured on a monthly basis to determine the average daily weight gain during the sheep breeding period. The daily gain is preferably 150-200 grams. Breeding ewes weigh more than 40 kilograms at 6-8 months of age and can be used for breeding.
Third, lamb feeding technology
Lambs are young sheep from birth to weaning (lactation). Generally weaned at 2 to 3 months of age, but also according to the weight of the lamb, as appropriate, and weaning can be performed when the body weight is more than 20 kg.
After the lamb is born, it has a weak constitution, low resistance, poor adaptability and easy to get sick. Doing a good job in lambs is the key to improving the survival rate of lambs.
1. Eat early and eat good colostrum. The colostrum should be eaten within 1.5 hours after birth. Colostrum is rich in protein, magnesium and antibodies. Magnesium has a laxative effect, promotes rapid excretion of the fetus and enhances the body's immunity. After the lamb is born, it can stand and walk about 10 minutes to find a nipple. When the weak lamb cannot find the ewes' nipples, they should artificially hold the lambs and induce their milk under the ewes' nipples.
2. Eat regular milk. Within 20 days after birth, the lambs were fed 1 hour at a time. After 20 days, they were given 4 hours at a time. As the age increases, the number of feedings decreases, the interval increases, and the duration of each feeding increases relatively.
For lambs that have lost ewes or ewes that are not milky and milky enough to eat, look for nanny sheep for them. Artificial milk can also be applied. Goat's milk must be sterilized after being sterilized at 70°C for 30 minutes. It can be used for timing, constant temperature, and quantitative measurement. The temperature should be 38-42°C. Within 7 days after delivery, feed once per hour, then gradually change to 1 day of breastfeeding 8 times, and keep feeding every 4 hours after 20 days. Lambs born throughout the day generally have 1/5th of the birth weight, and every 1 week thereafter have a 1/4-1/3 increase over the previous period.
3. Early feeding and feeding. Lambs should be trained to eat grass and eat 7-10 days after birth. Hang the grass to attract the lambs and use the saute to induce the lamb to eat. From the 15th to 20th days after the lambs are born, the lambs should be supplemented with mixed concentrates, preferably 50 grams per day for each lamb, and the amount of supplemented concentrates will be continuously increased as the lamb grows and the nutrients it needs increase. When the amount is increased every 5-7 days, and the lamb age reaches 60 days, the total amount of mixed concentrates supplemented should reach 300-350 grams. Lamb's supplement formula: corn 50%, bran 15%, bean cake 30%, salt, stone powder, bone meal, baking soda, premix 1% each.
4. Strengthen exercise. Five to seven days after birth, the lamb can choose the sunny day and warm weather. At noon, the lamb is rushed to the sports ground to exercise, in order to enhance the body, increase appetite, promote growth and reduce disease.
About 30 days after birth, the lambs form a small group of grazing animals alone depending on the distance of the pasture and the strength of the lambs.
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