Estrus performance and identification methods of cows

Cattle is a kind of livestock with large breeding area in China, and beef is also a popular meat product in the market. Therefore, there are still many people who raise cattle, and when raising cattle, the oestrus and mating of cows can not be ignored. This will directly affect whether the cattle can be raised normally and continuously. So how does a cow behave in estrus? How to identify it? Let's take a look at it with the editor.

1. Performance in estrus

After estrus, both behavioral and physiological conditions of cows are very different from those before estrus. Appetite will begin to decline, but more excited, each other will climb over each other. If you lift the tail root of the cow, you will find that the growth organs of the cow will flow out of mucus. The vulva is moist and red and swollen. This period of time is called the duration of estrus from the beginning of estrus to the end of estrus. The duration of estrus varies according to the age and English of the cow, which usually lasts about 20 hours.

2. Performance after estrus

At the end of estrus, the cow will reject the climbing behavior of other cows. The redness and swelling of the vulva will gradually decrease, the mucus is no longer transparent, showing a milky paste, and the amount will be reduced a lot. Cows do not ovulate during estrus, usually about 11 hours after the end of estrus. Cow oestrus is mainly because the follicles in the cow ovary have matured and begin to secrete a large amount of hormones, which will stimulate the whole body of the cow, especially for the reproductive organs, thus causing the cow to be in estrus.

3. Identification method

External observation

External observation is the most commonly used method to determine whether a cow is in estrus. We can determine the estrus of cows by observing the external performance of cows. As I just said, cows are very excited after estrus. They will not only accept the climbing of other cows, but also climb over other cows, and may also show the mating behavior of bulls. The vulva shows redness and swelling, flowing out of mucus, and will twitch.

Emotional testing method

Estrus test is also a commonly used method to identify whether a cow is in estrus. This method is more suitable for large-scale breeding of cows, and can save a lot of manpower. The first is to put the bulls whose vas deferens have been ligated into the herd. Put it in during the day and take it back at night, and then judge it according to the climbing situation of the bull and the acceptance of the cow. Then directly put the bull close to the cow, if the cow is also close to the bull, and make a stooping posture, then it also means that it may be in estrus.

The above is a brief introduction to the estrus performance and identification methods of cows. That's all for today's introduction. This article is for reference only. I hope it can help you.