The sows are ovulating and bred in the oestrus in winter. The time of farrowing is just the ideal season for spring flowers in the coming year. Its advantages: it is beneficial to the health of sows; it is conducive to the survival and growth of piglets; this is the timing of live pig filling, piglets are sold well and the price is high.
How can we make sows ovulate in winter oestrus? The following three measures should be taken:
Strengthening the rearing management of sows
The cold weather in winter has an effect on the sow’s health and ovulation. At the same time, the sows with their cubs are in a state of intense production and consume a lot of their physique. Therefore, the sow's husbandry and management must be strengthened during this period to meet the needs of various nutrients so that the sow can obtain comprehensive nutrients.
Pay attention to the right amount of fish meal, blood meal, bean cake, bone meal, carrot, pumpkin and other protein, minerals, and vitamin feed, the effect is even better. If fed properly, sows with larvae usually develop estrus from 3 to 5 days after weaning and can ovulate and breed normally.
For fattening sows who are over-fat, they must reduce their calving and reduce their calving. During the rearing process, empty-sow sows that are over-fat have to take measures to cut down and reduce their calving. Because the sow is too obese during any season, it often fails to ovulate normally. As a sow for breeding, it is advisable to use a body condition that is not fat or skinny.
Artificial aphrodisiac
In order to promote normal ovulation of estrus-inducing sows and inseminated sows, artificial aphrodisiac measures can be used, such as heterosexual induction method, control of lactation time, a method of nesting, early weaning of piglets, massage of breasts, and use of hormones. Aphrodisiac can achieve better aphrodisiac effects.
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