What are the main factors affecting goat fertility?

There are five main factors that affect goat fertility, namely, breed factor, nutrition factor, climate and environment factor, age factor and

What are the main factors affecting goat fertility?

There are five main factors that affect goat fertility, namely, breed factor, nutrition factor, climate and environment factor, age factor and the proportion of breeding ewes of appropriate age. The following are introduced separately.

1, various factors

The fecundity of ewes is closely related to heredity. For example, black goats give birth to two babies a year, giving birth to more lambs, and the lambing rate is as high as 380%. The lambing rate of Shaneng goat is 200%, and that of Chaoan goat is 1 15%. These are some highly fertile varieties.

2. Nutritional factors

When ewes are fat, they will be in estrus early, otherwise they will ovulate less and give birth to fewer lambs. Therefore, special attention should be paid to the breeding of breeding sheep one and a half months before breeding, so as to increase the ejaculation volume of rams and improve the semen quality; Promote normal and timely estrus of ewes, increase ovulation times, and improve the probability of giving birth to twins and multiple lambs.

3. Climate and environment

In hot and humid summer, rams have poor sexual desire, the quality of rice soup declines, and the offspring lambs are weak. Ewes generally have less estrus in hot or cold weather. In spring and autumn, the light temperature is suitable, and ewes are in estrus, which is normal.

4. Age factor

Generally, rams are in their prime of life when they are 3-7 years old, with strong body, strong sexual desire and strong reproduction. Ewes are 3-6 years old and have the strongest fecundity. Those who gave birth to twin lambs, three lambs and many lambs often do this during this period. Both male and female sheep are strong, and their lambs are healthier.

5. Proportion of school-age breeding ewes The proportion of school-age breeding ewes in the flock structure has a great influence on the breeding and feeding benefits of the flock. Generally speaking, the proportion of ewes breeding in the flock should be above 60% ~ 70%, which is also an effective method to improve goat fertility.