Why are cows getting thinner and thinner in high-yield period?

Whether it is prepaid or not, the food standard of cows has improved, but cows look skinny. When the calf is still living in the delivery room, the round belly is not much smaller. But since the beginning of milk production, cows have become thinner and thinner.

Seeing the milk yield rushing forward, cows can also lose weight quickly. When the calf was born, its stomach was flat and its body was bony. My hip bone expenditure is very high, my ass is flat into a nest, and four or five ribs can be clearly seen on my back.

The reason is that no matter how much cows eat, it is converted into milk production.

After calving, the cows quickly entered the peak milk production period, but at this time, the appetite of the cows has not been fully opened, and they can't eat food with so much milk production. When food can't satisfy it, the body fat is consumed.

Although increasing intake during the peak milk production period is a kind of compensation for the body. In addition to milk supply, some nutrients will also be converted into body fat, and the physical condition will gradually recover. But when cows can eat, it is also the low-yield period of cows, and the milk production of cows is declining. Farmers want to save costs, and then the concentrated feed of cows is almost reduced to zero.

But at this time, the input of concentrate can't drop too fast, because the cows are in the stage of body fat recovery in the later stage. If the body fat can't be recovered at this stage, it will affect the next milk production.

Cows in the late lactation period will be pregnant again, and the fetus has been 6 or 7 months, and the milk yield will drop rapidly. At this time, the feed must be lowered slowly.

If the increase or decrease of concentrate during this period is unreasonable, the cow will lose her physical strength when the calf is born again. During lactation, cows that could have produced 40 kilograms of milk a day can only produce 30 kilograms or even 20 kilograms now, which has a considerable impact.

Raising cattle is not growing crops. We cut this crop this year and plant the next one next year. The picture of raising cattle is the milk output of 1978. So the used fat must be brought back to it. If it can't be raised, it will be difficult for cows to rush to the next milk production peak in the coming year.

By the end of lactation, the concentrated feed can be reduced to 1/3, which can restore the cows to the best state where one or two ribs can still be seen vaguely.

When the cows are pregnant for 8 months, they will stop milking completely, enter the dry milk period of the cows and continue to reserve their physique.

This can make the cow recover as much as possible, which is reflected in the breast. To restore the function of mammary gland, we should not milk at this time, so that the mammary gland cells of dairy cows can be supplemented and improved to the maximum extent. Reserve some physique for the next milk production peak. During this period, I didn't eat anything good to reserve my physical strength. In the dry milk period, it is necessary to avoid cows being overweight and fetuses being too large, which will lead to dystocia. So hay is their main food, but for cows who have worked hard for 305 days, stopping milking for these two months is the best reward, which can make them recover their physical strength to the greatest extent and charge for the next milk production period. Source of this article: Science Park