To do dairy farming, you have to do better and better from generation to generation!

If you raise a cow, you raise a mother, because only a cow can produce milk. When will the cow have milk? It is only after conception and calving that milk begins to be produced. So it is very important to get a cow pregnant and calving. But now, no matter the cows raised by farmers or the cows raised on the scale of dairy farms, they do not raise bulls, so who does the cow find to get pregnant?

As long as you enter the dairy farm, your eyes will be full of cows clanking your breasts. Just like raising a hen to lay eggs, raising a cow is for milk. How can I get this milk?

When the cow is one and a half years old, it is necessary to find a husband. After successfully getting pregnant and giving birth to a calf, it is no longer just eating without effort, but can be milked.

The criteria for judging the estrus of a cow

Now the matter of finding a husband for a cow is no longer up to the cow, and it is all done by people. Such a careful selection is of course for the sake of future generations getting stronger and stronger. Now the marriage of the cow is not only arranged, but also no longer enter the bridal chamber, and the breeders help to complete the fertilization of the cow. However, there is also a key at this time, that is, whether the cow is willing to get married or not.

Although living in a woman's country, cows still behave when they are willing to get married, which is called estrus. Now it is artificial to get the cow pregnant in time, so when you see the physiological changes of the cow, you should pay special attention to it.

Jiang Shichuan: observing the estrus of dairy cows is the best for mating. Only after observing the time of estrus, can you breed in time, and the ability of cows means that you can improve the mating rate.

When you are willing, it will come naturally, and you can achieve successful breeding without wasting semen.

At this time, the cow has undergone internal changes in the body, there is no clairvoyance, can only pay attention to its external performance.

Yu Dehong: the most commonly used method in our cattle farm is the method of observation. The method of observation is mainly five looks. The first is to look at milk production, the second is to look at the expression, the third is to look at its vulva, the fourth to look at hip climbing, and finally to look at the mucus and secretion inside it.

A look at milk production: because generally just entered the cow's estrus, its milk production will have some fluctuations, mostly in the reduction, can be less than 1 kg.

Yu Dehong: an experienced breeder, because the milk production of a cow is very stable every day, suddenly there is a change in milk. He first thinks of whether the cow is in estrus. If it is sick, it is also milking. If it is not sick, it may be estrus.

Estrus cattle also began to behave strangely in the herd, and began to look around and not at ease to eat. So the look is the second signal.

Yu Dehong: it's not that it doesn't eat all the time, it doesn't eat for a while, and it's particularly sensitive to sound. Listen to where there is a whistle, there is no sound, it traces back to its roots, insisting on finding where the sound is, saying that the cow's mental symptoms are proestrus.

At this time, the cows began to like to be alone. The performance is uneasy, does not lie still, sometimes will send out courtship moo, three look at the vulva will find that its vulva has redness and swelling. At this time, if released, they will have the phenomenon of chasing and climbing. Therefore, the fourth is to observe its climbing.

Yu Dehong: at the beginning of estrus, this cow in estrus climbs this cow that is not in estrus, does not want to let it climb and runs forward, it chases after a period of time, other cattle, because of the smell of the hormones it secretes, other cows know that it is in estrus, and other cows begin to climb it.

Climbing is a very obvious manifestation of estrus. But for a moment, this end climbed up the other end, and then the other end climbed up this end. Is it the upper one in the estrus or the lower one in the estrus?

Yu Dehong: at the beginning of climbing it, it was still half pushed and was not very willing to let you climb. It also crawled twice, crawled twice, and then passed a stage. When other cows climbed him at this time, it was very stable for people to climb, and mucus flowed out from its vulva. We call it standing estrus, which is a very typical symptom of estrus.

It seems that whether it is climbing or being climbed, it may be a cow in estrus. So there is the fifth look, watching the transparent linear mucus flow out of the vulva, which also proves the cow's estrus.

In fact, the cow's oestrus process is precisely because its ovaries are also changing, at this time the ovaries have begun to be larger than the original, gradually appear follicles, with the increasingly obvious symptoms of estrus, follicles also began to change, growing into the shape of a small ball, like the size of soybeans, the vesicles are full of fluid and fluctuate obviously.

With the changes in the body, the cow has a series of external abnormal performance. However, it happens that some cows don't show anything.

Yu Dehong: cows without this symptom are called quiet estrus. Quiet estrus has no external symptoms, but it has all the internal symptoms.

For such cows, the date is used as a forecast of estrus. Carefully record 60-90 days after calving and have a vaginal or rectal examination.

Henan Dairy Cow breeding Center keeps more than 2000 dairy cows, so many cows have both performance and non-performance, so it is difficult to observe and record them.

But when the cows are in estrus, they haven't dropped it either. A good way is to put on ties for all the cows.

Miao Ting: that blue card is like a person's ID card. It's called an electronic recognizer. After each cow is born, it creates an electronic file for each cow.

The tie is the identity card of the cow. As soon as it goes to the milking hall, the cow number is displayed, and the data is immediately transmitted to the computer, which not only records the milk production, but also, more importantly, by some data analysis, prompting the breeder.

Miao Ting: this software timely prompts which milk production is reduced. According to the reduced cow number, you can go to the technician to observe the health status of the cow.

Fluctuations in milk production are a signal, as is the date.

Miao Ting: 45 days after delivery and 60 days after delivery, he will remind you that the cow will reach this physiological date of estrus today or tomorrow, so that technicians can observe or find out whether the cow is in estrus or not.

With a special hint, a small circle was drawn in the big circle and observed in a targeted way. Cast the net pertinently, and naturally there will be no fish left out of the net.