Cows Efficiently Cultivated
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In developed dairy cows in developed countries, dairy cows generally have a ration of 1/3 for silage corn, 1/3 for alfalfa hay, and 1/1 for supplementary concentrates.
3. In China, the ratio of dietary crude to crude of cows is generally 40:60, and that of partial concentrates is 60:40. Some farmers use too much of the fine material, resulting in frequent metabolic disease of dairy cows, so it is more suitable for rough type, crude fiber content of cattle should account for 15% to 24% of dry matter, and roughage should have 2 More than one. Dairy cows should be reared in groups. Farmers should adjust the herd according to the milk production level of the cows and divide the high-, middle- and low-yield groups to separate them. This can provide reasonable feed remuneration according to the nutritional requirements.
Prevention and treatment of common diseases Prolonging the useful life The longevity of farmed dairy cows is not long, and the majority of them are forced to be eliminated because of cow disease. In addition to epidemic heat epidemic prevention and tuberculosis quarantine for dairy cows every year, the cattle farmers must also focus on the immunization work of several common and more harmful diseases.
In addition to lowering milk production and causing damage to the mammary glands of dairy cows, mastitis mastitis can be eliminated and milk quality (cream,
Milk protein) decreased, somatic cells increased, chloride increased, milk bacteria exceeded. Therefore, cattle farmers must strengthen the health of their cattle beds and cattle body, and use the teat nipples before and after milking. They must adhere to 1 or 2 subcutaneous mastitis tests every month, especially during the dry period.
Metabolic disease This disease often occurs in high-producing dairy cows during perinatal and lactation periods, mainly due to inadequate nutrient content (mainly sugar), poor dry milk management, and unreasonable diet mix.
The general incidence of limb and foot disease accounts for about 10%, which seriously affects the normal activities and health of cattle.
The main causes of morbidity are unbalanced diets, poor quality of roughage, excessive moisture in the cattle bed, frequent flushing of the body with water, no prompt hoof repair, and genetic factors of the bull.
Choosing good breeds to improve breeding ability The breeder's choice of bulls requires a clear source of pedigree with a body appearance of 88 points or more.
Production performance and improvement effect, namely
More than TPI1500, at the same time to observe and identify the appearance of their offspring and production performance. The bull that has made a significant improvement will continue to expand its use. This is an important way to establish and expand the improved seed system.
At the same time, farmers need to master the rules of estrus in cows and use timely breeding of frozen semen to ensure the conception rate of cows.
More than 60% have a 13-month interval between calving and produce a thoroughbred cattle one year to improve the efficiency of dairy farming.