The vast majority of dairy cows now being raised in China are Chinese Holstein cows (also known as black-and-white cows) that have been raised in China. They are also the best dairy cow breeds in China, and they are high-quality milk cows. Buying cows requires a certain amount of technical expertise. Therefore, it is advisable for farmers to purchase dairy cows to hire professional technicians to help them to purchase dairy cows that are healthy, disease-free, and have high productivity. Judging the quality of dairy cows is mainly observed from the following aspects:
Body condition
The body appearance of high-yielding dairy cows is black-and-white flowers (also a small number of people are red and white flowers), a strong physique, a triangular body shape, well-developed hindquarters, the Ministry of the Ministry of Fangzheng, handsome appearance, short hair, thin and flexible. In some places in China, black-and-white cows are used for advanced hybridization with local cattle. Although their appearance is also black and white, their appearance is obviously smaller, their triangle shape is not obvious, and their production performance is very low. Therefore, those who are small in size should be avoided. A low-yielding hybrid cattle with a pointed ankle.
Breast udder is an important organ for dairy cows to produce milk. High-yielding dairy cows have large and well-structured breasts, good body attachment, large and non-drooping, good breast elasticity, large volume changes before and after milking, breast filling before milking, softening after milking, and formation of many wrinkles. This mammary gland is well-developed, with large and obvious milk veins, large milk wells, and high production capacity. The breasts of low-yield dairy cows have uneven breast sizes, poor breast attachment, overhanging breasts, inconspicuous breast veins on the breast surface, small milk wells, large breasts but poor elasticity, and little difference in volume before and after milking. We call this kind of breast a “swollen breast†and have poor milk production. Some cows have small breasts and obviously the output is not too high.
When you purchase cattle, you must carefully observe the gait and hoof shape of the cow. Abnormally hoofed cows often have limb and foot disease. For cows housed in pen homes, limb and foot disease is very prone to occur and will directly affect the milk production performance and high yield period of the cows.
Age and parity
Judging the age of cattle is mainly based on the teeth of cattle. Cows are selected to be selected as early as the age of about 7 years old. China's Holstein cows have a low milk output at the time of their first birth, which is generally equivalent to about 60% of the peak of the prime year. With the increase of age and parity, the 4th to 5th births are the production peaks in a lifetime. Under normal circumstances, cows are allocated at the age of one and a half to two years of age. The first child is born before the age of three. It is generally a high-yield period before the age of seven. After the age of ten, her milk production gradually declines, and it is also responsible for various diseases. Resistance has also continued to decline. Therefore, try to buy cows within 10 years of age.
Pregnancy check
In order to purchase a cow with good health and good performance, a detailed pregnancy test is usually performed to determine whether the pregnancy and the date of pregnancy are due to the fact that about 7% of cattle in the dairy population have reproductive problems. If the farm has a detailed pregnancy record, it must be carefully checked; otherwise, professional technicians must be asked to perform pregnancy tests.
JIANGMEN EASY TECHNOLOGY CO.,LTD , https://www.easylife-tech.com