To increase the efficiency of sheep breeding is nothing more than to improve the survival rate, increase the rate of lambing, how to improve the survival rate, let's talk about it next time, this time talk about the ewe's calving.
The fattening period of sheep is about 6 months. The fattening time is longer but the breeding rate is not high. If various measures are taken during the breeding process to increase the lambing rate of goats, the benefit of raising sheep can be greatly improved.
First, choose the ewe
As the saying goes, the dragon is born with dragons and phoenixes, and the sheep must also look at whether it is the mother who gave birth to it.
The lambs produced by the ewes that produce more lambs are also capable of growing lambs when grown up. Therefore, in the process of breeding sheep, the ewes with low lambing rate should be eliminated in time.
Second, hybrid improvement
The hybridization method is purposefully used to increase the lambing rate of sheep. For example, using Saanen goats to improve local sheep, the rate of double lambs in offspring can be increased by more than 40%.
Third, the use of drugs to increase lambing
The right amount of medication can also increase production at the right time.
7 weeks before breeding, 2 ml of double-branched protein was injected subcutaneously into the neck of each ewes, and 2 ml was injected 4 weeks before breeding, and the lambing rate was increased by 18%.
Fourth, shorten the pregnancy cycle
It’s better to let it live more than once a year. Try to shorten the empty period of the ewes, and strive to produce 2 or 2 years of 3 births per year. Two months after breeding, the ewes can be judged to be pregnant by treading.
Detection method: When the sheep is fasting in the morning, the sheep's neck is sandwiched between the legs, and the two hands are forked from the sides to the front of the breast of the ewe's belly, slightly lifted, and the left hand is pushed to the left from the right abdomen of the sheep. If there is a hard block in the hand, there is a lamb; each hand feels a hard block, which is a double lamb; if not, it is not pregnant.
Unpregnant ewes do aphrodisiac treatment
1. For the ewes that are not pregnant, put the vaginal sponge on the line with hormones (such as cloprostenol), then apply antibiotics, put them into the vagina of the ewes, use hormone treatment to promote estrus, and sponge after 17~21 days. The ewes have an estrus rate of 95%.
2. It is also possible to inject the ewes with 20 to 50 micrograms of ovulation, and estrus after 2 to 4 days of treatment.
3, using the light stimulation method, the ewes and rams will be concentrated in a circle, giving 20 hours of light per day, 60 days after turning into natural light, the ewes can estrus 2-3 times in 60 days. Moreover, the conception rate is higher after breeding.
Summary: There are two main considerations for improving the lambing rate. One is to increase the chance of raising the double lamb, and the other is to shorten the cycle of lambing and let the ewes have several births a year. Therefore, we must pay special attention to the estrus and pregnancy of the ewes, and do a good job in the management of the ewes.
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