Mating mode and time of cows

Cattle is a livestock breeding project with the largest breeding area in China. Beef is also a very big market in our country, but raising cattle is not as simple as we thought. We have to do a lot of work when raising cattle, especially the breeding of cows. Mating has a direct impact on the overall development of cattle, so how to breed cows? When should it be bred? Let's take a look at the way and time of cow breeding with Xiaobian.

I. mating mode

The main results are as follows: 1. There are generally three ways of breeding cows. The first is the more common natural mating, the fertilization rate of natural mating is relatively high, allowing cows and bulls to mate independently, there is no need to identify estrus for cows, but it is impossible to do a good job in the prevention of reproductive tract diseases. Then artificial assisted mating is carried out in the same way as natural mating. Mainly when the size gap between the bull and the cow is too large, when the bull can not mate with the cow normally, then manual work is needed to assist the bull and cow in breeding.

2, the third kind is artificial insemination, artificial insemination must first collect the semen of the bull. After careful inspection, freezing and thawing, it is input into the reproductive tract of the cow that is already in estrus. In the semen examination and freezing, to maintain a fast speed, controlled at about 10 seconds. Close the lid of the container in time to avoid evaporation of liquid nitrogen or the entry of other substances to reduce semen quality. Then it is necessary to cover the protective cover around the container and pay more attention to it to ensure that it does not vibrate smoothly and is not exposed to the sun. If transportation is needed, liquid nitrogen should be replenished regularly to avoid damage to the container, resulting in a decline in semen quality.

Second, mating time

1. At the age of half a year to one year, heifer will gradually begin its first estrus. At this time, the estrus period of the cow is relatively short, and there is no periodic rule. Because the reproductive system and body function of the heifer are not yet mature, it is not suitable for hair quality. Generally speaking, the sexual maturity time of bulls and cows is about a year, although they have fertility, and then because bulls and cows are also in a period of vigorous development at this time, if mating, it will affect their later growth and reproductive ability. It leads to the shortening of breeding years and the reduction of vitality and production performance, so it is not suitable for breeding at this time.

On the other hand, the mating time of cows should be determined according to the time when their bodies mature. In general, either the bull or the cow will finish at the age of 3 and enter the mature stage, at which time they can begin to breed. However, the mating age still depends on the variety. For example, the breeding time of native female yellow cattle is about 1.5 years old, and that of male cattle is about 2 years old. The excellent hybrid breeds are mainly 1.5 years old, depending on the growth of cattle.

The above is a brief introduction to the way and time of cow breeding. That's all for today's introduction. This article is for reference only. I hope it can help you all.