The colour of the calf depends on whether the bull or the cow is used

I now know that the color of the suit is determined by the male and female.

Breeding cattle are used to breed cows, breeding cattle are divided into bulls and breeding cows, the main characteristics of breeding cattle is to retain the original physiological characteristics and production performance of the breed, generally to purebred.

Modern Chinese Dictionary of Breeding Cattle.

The definition of dairy cows is "dairy cows", and the definition of dairy cows is "cows that are specially raised to produce milk, and the milk production ratio."

Cows are tall" (p. 1077, published in July 2001) So cows are females, males cannot produce milk, males are called breeding cows, not "male cows".

In large and medium-sized dairy farms, most of the dairy cow pedigrees are established. Three generations of the cow's pedigree are clearly documented in the pedigree. According to the records, it is easy to tell whether the cow is purebred or not.

Generally speaking, most of the cattle with clear pedigrees of the three generations are purebred cattle, and of course there are cheating. If the farm does not establish a pedigree of cows or has doubts about the pedigree records, they can be selected based on the size and appearance of the cows.

The so-called breeding cattle are bred through selection and purification in different breeds of cattle to breed the next generation of excellent individuals; Breeding cattle are divided into breeding bulls and breeding cows; The main characteristic of breeding cattle is that they retain the original physiological characteristics and production performance of the breed.

Breeding cattle should have good qualities, such as not being fat or thin, healthy, and generally purebred (from a genetic point of view).

When choosing cattle in the hall shelf, it is necessary to pay attention to the selection of strong, precocious, early fat, not picky eaters, and high feed remuneration. The specific operation should consider the variety, age, weight, gender and physique, appearance and so on.

1) Breed and age: At present, it is best to choose Charolais cattle, Limousin cattle, Piedmontese cattle, Simmental cattle and other meat or dairy bulls and local cattle and cow crossbred offspring, and can also use China's local cattle breeds, such as Jinnan cattle, Qinchuan cattle, Nanyang cattle and Luxi cattle. It is better to choose the age of 15-21 months.

2) Gender: If you choose castrated cattle, it is better to castrate early, 3 6 months old castrated cattle can reduce stress, accelerate the feminization of head, neck and limb bones, improve the meat yield and meat quality, but the growth rate and feed conversion rate of bulls are better than steers, and the carcass has more lean meat and less fat.

3) physical appearance: when choosing a shelf cattle, the first thing to look at is the weight, under normal circumstances, the age or 15 21 months of cattle, the weight should be more than 300 kg, body height and chest circumference should be greater than the average value of the development of the month in which it is located. There are other traits that cannot be measured by scales and are also important, such as coat color, horn status, hoof, back and waist strength, rib opening, shoulder blades, etc.

The general shelf cattle have the following rules:

Shelf cattle with long limbs and body have the potential for growth and development, and if the young calf has become symmetrical, the future development may not be good;

Cattle with slightly higher crosses than body height and high hind limb flying joints have strong developmental ability; **Beef with a loose and soft coat is of good quality; Although the breeding is good, but the temperament is short-tempered, the neurotic cattle cannot be considered healthy cattle, and the cattle that are talked about in this way are difficult to manage.