Science and technology of breeding hybrid sheep
The Bor crossbred sheep, which is obtained by crossing Boer goats with local goats, has good production performance. To give full play to its advantages, management must grasp the following points:
1, feed nutrition properly increased.
Hybrid sheep grow faster, especially in the 6-9 months after birth, and the body weight can be double that of the local sheep. The demand for nutrients is also relatively high. It is necessary to supplement the local sheep's diet properly. Hybrid sheep born in spring are generally not allowed to feed at the other places except where the forage resources are properly supplemented before and after weaning and before going on the market. In the autumn, the hybrid sheep born in the autumn are generally fed supplements, otherwise the hybrid sheep will be affected in the early growth and development, and the feeding effect will be poor.
2, strengthen management.
In addition to doing a good job of day-to-day management, we must timely castrate and periodically deworm. Lamb castration is usually carried out about two months after birth. In the spring and autumn, the flukes and nematodes are driven once every two months. The locusts are driven once every two months. The ectoparasites are driven once every spring, autumn and winter.
3, short-term fattening.
One month before the hybrid sheep were slaughtered, short-term fattening was performed. Under normal grazing conditions, hybrid sheep aged about 6 months were fed 150 g of corn, 100 g of bran, 50 g of soybean meal and 3 g of bone meal each day. After about 1 month of fattening, the hybrid sheep can gain 6-8 kilograms.
4, the lamb marketed that year.
Hybrid sheep have a particularly rapid growth rate in the early stage, generally weighing 25-30 kg in 6-9 months of age. Even the hybrid sheep born in the fall can grow to 20 kilograms around 4 months of age as long as they strengthen nutrition and provide reasonable supplements. In addition, a reasonable arrangement of breeding time is also a measure to ensure that the lamb is listed in the same year.
5. Use additives.
The additives commonly used in goats include mineral additives, rare earth feed additives and insecticide-resistant health additives. The rational use of these additives is beneficial to the growth of goats. If 0.02% rare earth is added to the fattening sheep diet, the daily weight gain can be increased by 17.1% within 60 days.
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