When do cows change? Whether cows can produce milk at any time, or after giving birth to calves

After 5 days of calving, the milk test is qualified (in line with the requirements of the dairy factory), and it can be transferred! Milk testing is divided according to milk production, and it is best to test once or three times a month in the future!!

Cows do not produce milk until they give birth to calves.

Generally, milk production increases rapidly from 15 to 20 days after calving, reaches the peak of milk production in about 2 months (about 3 months for high-yielding cattle), decreases significantly after 4 months, declines rapidly after 7 months, and basically stops at the end of 10 months.

Dairy cows to produce a large amount of milk, first of all, there must be a good breed, followed by scientific feeding management, cows need to supplement 1 kilogram of concentrate mixture for each kilogram of milk, as well as high-quality roughage, vitamins, calcium, phosphorus, minerals and other trace elements.

Cows don't produce milk at all times, and they don't produce milk until after giving birth to calves.

Cows begin to produce milk 15 days after giving birth to their calves, with peak milk production occurring between 16 and 100 days after birth. After that, the milk production will gradually decline and the dry milk will enter the waiting period for farrowing.

In order to shorten the dry milk period, the cow is artificially inseminated about 3 months after giving birth. Cows that have successfully conceived will give birth to calves again about 60 days after they stop lactating and start a new round of milk production.

Cows don't produce milk until they give birth to calves.

When the cow reaches sexual maturity, it is generally through artificial insemination to make the cow pregnant, when the calf is born, the cow is immediately separated from the calf, and the cow's feed structure also changes, making it more conducive to cow milk production.

Dairy Cow Performance:

1. Lactation performance.

The average annual milk yield of the whole herd has reached more than 7,000 kg, and the number of dairy cows with a lactation period (305 days) has reached more than 10,000 kg. The average milk yield of better quality dairy cows in the third lactation period is more than 6,000 tons.

2. Meat production performance.

According to a few regions, the average slaughter rate of unfattened cows and castrated bulls can reach more than 50%, and the net meat rate is more than 40%. According to the determination of Heilongjiang Province, the average slaughter rate of 14 adult cows is the average net meat rate.

In order to facilitate daily management, reduce feeding costs and improve feeding efficiency, dairy cows are generally fed in groups according to their growth and development stages and different lactation stages after adulthood.

The so-called group feeding is that the replacement cattle are raised and managed according to the age of the month, which can be divided into the calf stage (0 6 months old) [and can be divided into the lactation stage (1 2 months old) and the weaning stage (3 6 months old)], the rearing stage (7 months old to the first mating period) and the young cattle stage (after the initial mating to the first farrowing). Adult cows are centrally fed and managed according to the lactation stage, which can be divided into five stages, namely dry milk stage (60 to 16 days before calving), perinatal period (15 days before and after farrowing), peak lactation period (16 100 days after farrowing), mid-lactation (101 200 days after farrowing), and late lactation (201 days after farrowing to the day before dry milk).

In order to carry out cost accounting, improve management and overall profitability of dairy farms, it is often necessary to calculate the milk production of the entire dairy herd. There are two ways to calculate, one is to count the average annual milk production of adult cows, and the other is to count the average annual milk production of dairy cows. The formula for calculating the annual average milk production of an adult cow is:

The total annual milk production of the whole herd is the sum of the actual milk production of each cow in each month of the year; The average number of adult cows raised per day throughout the year is the sum of the number of days that all adult cows have been in the herd (days), divided by 365 (1 year) days, so a decimal point is allowed. Adult cows include lactating cows, dry cows, and other cows over the age of the herd and cows that are bought and sold.

Since adult cows include dry cows that are not in the lactation period and other cows that do not produce milk for other reasons, they do not truly reflect the production level of dairy cows. For this purpose, only the average annual milk production of lactating cows can be counted, which is calculated as:

If you don't care about the experience points you lose after hanging up, don't pick them up, it's dangerous to run naked in front of a group of moos. Retreat from the game and advance again, and the corpse will follow back to the city

If you want to go into the cattle pass and pick up the corpse, you can slowly lure the cow away, and if it is a battle net, you can find someone to help. But you must be careful on the road.,Don't pick up the garbage on the ground (use the map WG to shield the garbage),It's easy to cause a violent corpse.,If you quit the game after the violent corpse.。。。 The equipment is gone.

Either you will quit the game for the first time.

Hanging like this repeatedly, there are too many corpses, and the equipment can easily disappear.

Exit the game and re-enter the corpse in front of you.

If you are online: find a strongman (usually PAL) to go in and clear the monsters, and then enter by yourself.

Stand-alone will be returned, I wish you didn't explode the corpse.

Exit and re-enter, the corpse is next to it.

Quit, won't the corpse appear at your feet down! But if you quit, you won't have a chance to get in, haha! I haven't seen you in this situation, no matter how dangerous it is, you can pick up the corpse, there is no unsuccessful, just try a few more times! ~

Cows are not actually social animals, and many cows can survive on their own, unlike Japanese black cows, which have to huddle together even in the hottest weather.

First of all, according to different stages of the group, lactating cows according to high and low production, conditional can also be pregnant and then separated. The same goes for the young cows.

Friend! Learn Farming Techniques! Your parents raised cows for twenty-five years!

The variety is black and white! The daily output of each head is about 15 kilograms, which is a high yield! What I want to say is, if it's a bad variety!

If only the concentrate feed is too little! You just need to learn from your parents! Friend, what kind of thing is good when it is done well!

If you mess up, it's a bad thing! Do your best according to your interests and hobbies! But it's important to remember:

Accurate, stable and ruthless" are indispensable! See more, refine more, and think more! You will make it!

First of all, the local area is suitable for raising cattle, and then build a multi-story intelligent greenhouse, planting a variety of forage suitable for planting in the local area, it is best to choose Sanhe cattle, high milk production, (you said black and white should be Chinese Holstein cows, in reality with this breed is very few, because the milk can not be slaughtered, Sanhe cattle can be slaughtered, sell meat and skin) is not recommended to use cattle, cattle milk production is low, slaughter rate is also low, and then raise some local breeds of sheep and deer for mixed grazing.

Nowadays, there are many animal husbandry and veterinary schools, and if you don't go to them, you can go to the bookstore and buy related books.

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