How long does a cow breed after giving birth to a calf?

Cattle are a common kind of poultry in our country, and they are raised in many areas, but if you want to raise a good calf, you need to choose a good calf, so many people use self-breeding to ensure the quality of the cow. How long will it take for the cow to breed after giving birth?

How long will it take for a cow to breed after giving birth to a calf?

It is appropriate for cows to breed 60-80 days after giving birth to calves. Because after calving, it takes 20-30 days for the uterus to recover and about 20 days for ovulation, so it takes about 60-80 days as a whole. In this way, one calf per year can be achieved, and the milk production time of about 300 days can be guaranteed.

When will the cow be bred?

The suitable time for insemination of cows is 9 to 24 hours after the beginning of estrus, and the interval of secondary insemination is 8 to 12 hours. Because usually the duration of estrus of the cow is 18 hours, ovulation is 10 to 15 hours after the end of estrus, the survival time of the egg is 6 to 12 hours, the sperm to the egg site takes 6 hours, and the sperm enters the fertilization site for 0.25 to 4 hours. The sperm maintains the fertilization ability in the reproductive tract for 24 to 50 hours, and the sperm capacitation time takes 20 hours.

Cows often ovulate at night, and should be inseminated at night and early in the morning to avoid insemination when the temperature is high, especially in summer, in order to improve the conception rate. The duration of oestrus for old and weak cows is short, and the time of mating should be advanced. Cows are in estrus for the first time after delivery, usually cowboys for about 40 days or more, which has a lot to do with their nutritional status. Generally speaking, mating in the second to fourth estrus after delivery is easy to conceive, so we should seize the opportunity to mate in time.

Third, how to breed cows?

1. Natural mating: natural mating, also known as natural mating, refers to direct mating between bulls and cows. this method has the advantages of low utilization rate, high purchase price, high cost of feeding and management, and easy to spread diseases, so it is not suitable to be used in production. With the development of science and technology, natural mating is also replaced by artificial fertilization.

3. Artificial insemination: in the improvement of yellow cattle in a large area of our country, artificial insemination of cows has become a modern scientific breeding technology in the cattle industry, and has been widely used throughout the country. Artificial insemination is the artificial collection of bull semen, after quality inspection, dilution and freezing, the semen is injected into the reproductive tract of the cow, so that the eggs excreted by the cow become pregnant after fertilization. And finally gave birth to a calf. The application of artificial insemination technology can improve the breeding efficiency of excellent bulls, accelerate the process of cow breeding and the speed of reproduction and improvement, improve the conception rate of breeding cows, and avoid the spread of diseases caused by direct contact with reproductive organs.