What is a cow? Experienced livestock farmers know that cows are estrus, which is a normal physiological phenomenon in cow breeding. So how many days does the cow cycle? How to make cows hit the bar ahead of time?
First, the reason for the cow
There are many reasons for cows to hit the bar. The symptoms of different cows are different. When breeding, different symptoms can be judged to complete the breeding and breeding of cows.
Variety
The rules of cows of different breeds will be different. Generally, cows perform more clearly in the puberty period. Cows of dairy cow breeds are earlier than puberty of beef cattle, and yak puberty is relatively late. It will enter the puberty period when the yak is around a year.
2. Feeding
A good breeding environment and aquaculture technology are conducive to raising the level of breeding. If the nutrition of the feed is balanced, the growth and development of the cow will be accelerated, and the puberty will be advanced in advance.
3. Environment
The cow's playing period is generally concentrated in the late spring and early summer, while the summer and winter striking phenomenon is less, mainly in the summer weather, the ovary and adrenal sebum of hot cows also secrete progesterone, causing the cow to hit the bar. The period is shortened. In some areas in winter, the climate is less cold and the grass is less, and the cows are poorly fed, which will affect the phenomenon of cows hitting the bar.
Second, how many days is the cycle of cows hitting the bar?
Cattle usually hits the bar all year round, but the probability of colder weather in the winter weather will also decrease. The peak season of the bar is in the summer and autumn of each year, and the cow's penning cycle is about 20 days. Cattle, usually only after 40 days will enter the bar. The cow's playing period can be divided into three stages. The duration of the early stage is about 6 hours, the duration of the hitting period is about 3 hours, and the late stage of the hitting is about 15 hours. The time suitable for breeding is in the period of hitting the column, but the duration of the hitting period is shorter, so it is necessary to understand the symptoms of the cow's striking during breeding and to carry out the breeding in time.
Third, let the cows hit the bar early
Feeding
When feeding cows, pay attention to timely supplementation of nutrients. Add nutrients such as bone powder, trace elements and minerals to the feed to promote the growth of cows. It is also suitable to supplement vitamin E, which is conducive to promoting cows to fight. In addition, when feeding the cows, a small amount of fresh grass is fed, and the vitamin content in the fresh grass is high, so that the cows are balanced in nutrition.
2. Artificial aphrodisiac
For the injection of related drugs to cows, prostaglandins, estrogens, triad hormones and the like can be used, depending on the degree of obesity, the state of the bar, and the feeding status of the cow.
3. Postpartum cows
To make the postpartum cows recover quickly, it is also possible to let the cows hit the bar early. During the period, it is necessary to replenish water in time, increase the intake of protein and calcium, and allow the cows to rest adequately, and exercise properly to accelerate the reduction of reproductive organs. The method of feeding cows and burdocks can promote the recovery of cows in the early stage, but it is better for cows to play the bar after 60 days, which is more conducive to the health of the cows.
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