In the entire sheep-raising process, lamb cultivation is the key to the production of sheep. The survival rate of lambs directly affects the economic benefits of raising sheep. Therefore, raising the survival rate of lambs and cultivating healthy, well-developed lambs are the reasons for the high level of sheep breeding. The key to benefit.
1. Strengthen the feeding and management of pregnant ewes
The average gestation period of ewes is 149 days (usually 140-157 days), divided into pre-pregnancy and late pregnancy. After mating in early autumn, the forage grass is still in the green grass stage or has already been seeded. It is rich in nutrients. The ewes can only be reared by grazing; however, if the mating season is later, the pasture has already become yellow, then the ewes should be supplemented. The diet consists of 75% of quality hay, 15% of silage corn, and 10% of concentrate. Ewes should be avoided to eat frosted grass, moldy feed, avoid frightened, run and drink ice water to prevent miscarriage. In the second trimester of pregnancy, the growth and development of the fetus is very fast, and 80%-90% of primary birth weight is formed during this period. The ratio of concentrates should be increased and the nutritional level should be increased.
2. Strengthen feeding and management of nursing ewes
The nutrition of the lamb during lactation is mainly derived from breast milk. The 2 months after delivery of the ewes is the key period for lactation, and it is also a critical period for the lambs to be bred through breast milk. The ewes are frail after lambing and need to recover quickly. It is more important. Lambs grow fast during lactation and need more nutrition, while lambs have incomplete rumen development, poor feeding and digestive abilities. Lamb's nutrition is completely dependent on the ewes' milk. If the ewes have good lactation performance, When the amount of milk is large, the lamb grows fast and has a high survival rate, so it is necessary to strengthen the feeding of nursing ewes.
3, to strengthen the feeding and management of lambs
(1) Ensure that the lamb eats full colostrum and that eating colostrum is a key link in reducing the incidence of lambs and increasing their survival rate. The lamb must have colostrum within 1-3 days of its birth. Colostrum is thick yellow, nutritious, contains a large number of antibodies and magnesium salts, can increase the disease resistance of lambs, and can promote fetal discharge.
(2) Open the grass early and leave it as early as possible. The purpose of early opening and early opening is to exercise the lamb's feeding ability, stimulate the ruminal development of the lamb and promote the formation of rumen microflora, so as to improve the lamb's ability to feed after weaning and the speed of growth and development, so it is born in the lamb. After 7-10 days, training and feeding should begin. In the feeding process, less feeding is needed, regular ration, first fine, and then coarse, 1-month-old lambs supplement each day with 50-100 g of mixed concentrate, and lambs of 1-2 months old supplement each day. Concentrates of 50-200 g, 3-4 months old lambs each day feed supplement 250-500 g, while providing adequate drinking water.
4, Lamb timely weaning
Maternal postpartum lactation levels generally peak in 2-4 weeks. The amount of lactation within 8 weeks is equivalent to 75% of the total milk production in the whole period, and then it declines significantly. Therefore, the lamb is timely weaned and is beneficial to the ewe. The recovery of physical strength is conducive to early lamb eating, so that the lamb can complete the use of feed forage to meet the nutritional needs, so as to promote the growth and development of the lamb. The early weaning age of the lamb is generally 40 to 60 days, 48 ​​to 56 days. should.
5, do a good job in environmental control and epidemic prevention
The cultivation of lambs should pay attention to the optimization of living environment, and establish a warm, dry, ventilated and clean environment for newborn lambs. This is the primary link for the normal growth and development of Baoan lambs and the improvement of the survival rate. Prevention of cold or heat and closeness is a serious problem. Poor ventilation and excessive humidity. The disinfection system shall be strictly implemented in the epidemic prevention, measures shall be taken in case of onset, separate breeding of diseased lambs, timely treatment of dead lambs and pollutants, control of the source of infection, and prevention of entry of foreigners into the sheep houses to minimize the route of transmission.
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