First, feeding method
1, 1 week to 1 year old In this period, the bovine genitals and secondary sexual characteristics develop rapidly, the body grows rapidly in height and length, and the volume of digestive organs expands by about 1 time. For the bred cattle of this period, sufficient nutrients should be supplied in the breeding, and in addition to the excellent herbage, hay and succulent feed, some concentrate must also be properly supplemented. Starting from the age of 9 to 10 months, some straw and gluten feeds can be fed, and their weight accounts for about 30% to 40% of the total amount of coarse material.
2. 12 to 18 months of age At this stage, the volume of digestive organs of cows has increased even more. To promote the further development of digestive organs, diets should be dominated by roughage and succulent feeds, which weigh approximately 75% of the total diet, and the remaining 25% are mixed concentrates to supplement energy and protein deficiencies.
3, 18 ~ 24 months of age This period is the mating phase of cows, its growth and development gradually become slow. The bred cows at this stage should have appropriate nutritional levels. Excessive nutrients can easily lead to over-fertilization of the bovine body and cause difficulty in conception; even if conceived, it can affect the normal growth and development of the fetus and delivery; This stage should be fed to the cows with good quality hay, green feed, silage and root feeds, supplemented by concentrates. By the end of pregnancy, the amount of concentrate feeding should be appropriately increased and 2 to 3 kg can be fed every day to meet the needs of fetal growth and development. In areas where grazing conditions exist, bred cattle should be grazing-based, and the amount of feed fed should be increased or decreased according to the growth of pasture.
Second, management measures
1. Group management When the yak is transferred to the rearing barn after 6 months of age, the male and female shall be reared in groups. Should be as close as possible age and weight of cattle together. Production is generally grouped by weaning to 12 months of age, 12 to 18 months of age, and 18 to 24 months of age to facilitate feeding and management.
2. Strengthen sports In areas where there is no grazing condition, bred bred cows that are bred to the fleas need to drive for more than 2 hours a day at the sports ground in order to enhance their physique, exercise their limbs, and promote the development of the breast, cardiovascular, digestive and respiratory organs.
3, pay attention to health on breeding cattle, brush at least 1 or 2 times a day, each time 5 to 8 minutes. During feeding, pay attention to keeping the environment clean. On sunny days, let them receive more sunlight to promote the body's absorption of calcium and promote bone growth. It is forbidden to expose them to prolonged exposure under the hot sun.
4. Massage breasts In order to promote the development of bred cows, especially in late-growth bred bovine mammary gland tissues, the method of breast massage should be adopted at the right time on the basis of giving a good full-priced feed. The effect is very obvious. The bred cows aged 6 to 18 months can be massaged once a day, and massaged twice a day after 18 months of age. Massage can be performed simultaneously with brush body. Use a hot towel to rub the breast each time you massage. Stop the massage 1 to 2 months before delivery. However, during this period, avoid swabbing the nipple so as not to wipe off the abnormal protective material around the nipple, causing cracks in the nipple or invading the nipple hole due to pathogens, resulting in mastitis.
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