1. Selection of hybrid lambs for fattening The so-called hybrid lambs are lambs produced by cross-breeding between different sheep breeds. Because of the heterosis of the lambs they produce, under the same husbandry and management, the hybrid lambs have a major new life, the survival rate of lambs is high, and the growth and development are fast. The reward is high. If the hybrid parents chosen are suitable, then the hybrid sheep fattening is generally 20-30% more economical than the local sheep. Production practices at home and abroad have proven that the selection of early-maturing varieties as male parents and the breeding of ewes with high fertility and high lactation performance are important technical measures to increase lamb production.
Second, strengthen the ewes feeding and management Lamb primordial weight and ewes lactation and maternal nutritional status are closely related, which requires the ewes in the late gestation and pre-lactation to strengthen the feeding and management to provide high-quality fattening lambs.
3. The lambs of the early feeding lambs can train their forage materials 15 days after their birth, but they must begin to feed high-quality forage materials, such as alfalfa hay, fried soybeans, etc., and they must gradually improve the rumen function of the lambs. . At the beginning, the grass freely eats food. The total feeding amount of the concentrate for one day does not exceed 0.1 kg and gradually increases with the age.
IV. Early Weaning Early weaning is essentially the control of lactation, shortening the lambing interval and controlling the breeding cycle. The lambs are weaned early, the ewes are mated early, and the lambs are born early, reaching two or two years of three-children, multiple births a year. An important technological measure of prolificacy. From the ewes' postpartum lactation laws, lactation peaks at 3 weeks postpartum, and then gradually declines. At 7-8 weeks after birth, breast milk is far from meeting its nutritional needs. At the same time, the consumption of feed formed by milk is also greatly increased, which is economically uneconomical. Judging from the development of the gastrointestinal function of the lamb, the forage material can be effectively used within 2 months after birth, so weaning at this time is more appropriate.
5. It is easy to insect the parasites before the fattening. In order to increase the feed conversion rate and increase the economic benefits of fattening, insecticides are needed before fattening. Apithiophene imidazole (10-15 mg/kg) or ivermectin (0.2 mg/kg) can be used for deworming. One-time morning oral empty stomach.
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