Cows eat grass and milk out. The life course of cows is relatively good, because humans basically don't need their meat, and the main thing is to make them milk. The main job of the cow is to eat, drink, and produce milk, unlike cattle and buffaloes, who may be sold for slaughter and turned into meat when they are old after a busy life. It's not that you shouldn't do this, it's just that the life of a cow is quite sad.
Cows are a type of cow, and they are not a subspecies of cattle, but have been specially bred by humans. In primitive times, human beings liked to eat things that were high in fat and protein. At first, it was raised to obtain meat, but when the nutritional needs were high, humans became aware of milk, so they specially bred cows, sheep and other livestock for milk production. In essence, dairy cows are still a type of cow, and they are not reproductively isolated from other cows, but their feed-milk conversion efficiency is relatively high.
However, cattle are also typical mammals, and the gender differences are obvious, male cows do not produce milk, but cattle farms must raise male cows. From the physiological point of view, bulls also have mammary glands, but due to the effect of sex hormones, the mammary glands of male cows are not developed like human males, if a large dose of estrogen is used, it is possible for male cows to produce milk, but such milk and cow milk is still different in nature. The role of the male cow is to impregnate the female cow.
The production of milk is not as simple as most people see, it is not an idyllic scene, the cow runs and forages in the grass with her calf, in reality it is not so cheerful at all, in order to efficiently grow milk, the cow's life is in the planning of human beings. This is the meaning of breeding, the whole life of livestock is in the planning of human beings, inviting them to die can only die, to gelding them is a matter of a knife.
The advantage of mammals is that the embryo develops in the body, the umbilical cord provides nutrition, and the relationship of survival competition, the cow is almost developed when it is born, and it will not take long before it is born to stand and run, and then be carried by the cow. Originally, in the natural environment, the cubs can get enough breast milk in the early stage, and the breast milk, especially the colostrum, contains immunoglobulins, which can improve the resistance of the cows, but the cow's milk humans also need it, so they have to plan the life of the cow.
The life course of cattle also has some defects for humans, mammals do not produce milk except when they are pregnant with cubs, but humans need cow milk, what should we do? That will only increase the frequency of pregnancies in dairy cows. At this time, the role of the bull comes out, the cow cannot get pregnant without the bull, and the pregnancy of the cow is also in the planning of human beings, human beings let them get pregnant so that they can get pregnant, human beings let them carry which bull's cubs they can only conceive.
Dairy cows are bred by humans to produce milk, their traits are different from other cows, and cows cannot be allowed to seek mates, mate, and reproduce on their own, because this may lead to the impurity of the cow's genes, which may lead to changes in the traits of the offspring, and the efficiency of milk production of the offspring produced by dairy cows and beef cattle is of course not guaranteed. Historically, the cultivation of such organisms has used the means of hybridization and inbreeding, and hybridization has obtained a certain advantage, and inbreeding has fixed the trait and become a variety that can stably inherit a certain trait.
Therefore, dairy farms must breed bulls, which are also painstakingly bred by humans to fertilize cows and impregnate them. The cow's mammary glands begin to develop during embryonic development to produce milk, and milk can be produced until the lactation and pups after childbirth. However, the words of the cow will inevitably lead to a decline in milk production, so the cows in the dairy farm need to separate the cow from the cow after the cubs, so that the cows can adapt to artificial feeding, and the cows do not have to be distracted to take care of the cows and produce more milk. The calves are selected, and the male and female are treated differently.
The task of male cows is also not light, they mainly eat, drink and grow their bodies, most of them are processed, and only a small number become breeding cows. It is a pity that even breeding cattle are not treated like bulls in nature, and large breeding institutions do not allow them to courtship and mate on their own in order to make more efficient use of breeding cattle, but to extract ** under human operation, and then select cows of the right age to inject and make cows pregnant. Most bulls are bred from an early age and used as a material for the production of leather goods or meat.
The life of a cow is basically like this: after birth, it is selected, and those disabled and deformed must be eliminated, and their lives are planned by humans in the young adult stage, which is basically a process of repeating pregnancy, farrowing, mother-child separation, pregnancy, and farrowing. In old age, due to digestive disorders, the cow's milk production will decline, and then its fate is to be dealt with. There are various ways to deal with it, or according to the needs of human beings, some are taken to produce ** skin, and some are made into meat, basically there is no idle life.