First, determine the dry milk time. Dry milk time depends on the cow's expected date of birth and the length of dry milk. The dry period of dairy cows is generally 50-70 days. Early mating cows, lean-bodied cows, old cows, high-yield cows, cows that are difficult to stop milk, and cows that are not well stocked, dry period It can be longer, about 60-75 days, and the cows with better nymphs and lower milk production can be shortened to 45-50 days.
Second, adjust the feeding management plan in advance. One week after stopping the milk, he began to adjust the cow breeding program, while changing the free drinking water to regular quantitative drinking water. The number of milking can be changed from the original milking three times to milking twice a day. When the milk is stopped for 3 days, the feeding scheme is adjusted again according to the milk production of the cows. At this point, if the cow's milk production is still very high, all fines should be subtracted; if the milk production is not very high but the daily milk is still above 10 kilograms, some fines can be properly deducted. In kilograms, it is no longer necessary to adjust the feeding amount of the concentrate, but it is necessary to appropriately limit the amount of drinking water for the cow, and the milking can be changed to once a day. At the same time, the daily exercise time of the cow can be appropriately increased to increase the consumption and exercise constitution.
Third, squeeze the last milk, closed nipples. On the day of dry milk, oily antibiotics or special dry milk should be injected into the breast after the last milking. Oil antibiotics are prepared by taking 40 milliliters of edible peanut oil, heating and sterilizing and cooling, and mixing 3.2 million units of penicillin and 2 million units of streptomycin, and inject 10 milliliters into each milk area from the teat hole.
Fourth, pay attention to observe the changes in the breasts. When the above operation is completed, the cow's breast changes must be carefully observed. Under normal circumstances, the breasts are significantly inflated in the first 2-3 days. After 3-5 days, the accumulated milk is gradually absorbed. The breast volume is significantly reduced in about 7-10 days, and the breast tissue becomes soft. At this time, the cow stopped lactating and stopped milking successfully. In the process of dry milk, breasts will swell if there is severe swelling of the breasts, redness of the breasts, fever of the breasts, and fever of the cows. In this case, dry milk should be suspended, milk from the breasts should be squeezed out, and the breasts should be treated with anti-inflammatory treatment and massage. After the inflammation disappears, dry the milk again.
Fifth, strengthen dry milk feeding and management. When dairy cows begin to dry their milk, they must control the concentrate feed and the green and juicy feed for 3-7 days to reduce their lactation and promote breast atrophy. After the cow's breasts have shrunk to 20 days before the due date, adequate dietary supplies should be given to ensure the development of the fetus and the recovery of the cows. Generally, a full-price concentrate feed of 1.5-2 kg is supplied daily. In actual production, the amount of concentrate feed can be flexibly adjusted according to the condition of cattle and the quality of concentrated feed. In addition, this phase should pay attention to the supplement of minerals to meet the rapid development of the fetus. Taking bone meal as an example, 120-160 grams should be added every day. From the first 20 days before the expected date of production, gradually increase the amount of concentrate feed for the cows, increase by 350-500 grams per day, and continue the week before the due date. With the advent of the maternity period, the breasts of most cows around 7 days before delivery are fully swollen. In order to avoid excessive breast swelling, concentrate feed should be lowered at this time. While reducing the supply of concentrate feed, it is even more important to substantially reduce or completely stop the supply of calcium-containing feed so that the dairy cows will not be paralysed after delivery.
In addition to the precautions for feeding during the dry period, we must also strengthen management during this period. The focus of the whole period is on miscarriage and prevention of abortion. Pregnancy must be separated from the communal animals, and it must be separated from large groups of dairy cows and fed with frosty mildew. The temperature of drinking water in winter should not be lower than 10-20°C. In a hot and humid summer, the cattle should be placed in a cool and ventilated environment. If necessary, the nutrient concentration of the diet can be increased. The beef body hygiene should be strengthened to keep the skin clean. During the period from 10 days after dry milk to 10 days before delivery, dry cows should be massaged daily to promote breast development. Give appropriate exercise to avoid over-eating of the bovine body causing difficulty in delivery and constipation. In addition, do not mutate feed varieties during dry milk, so as not to reduce the intake of dry cows.
Commode
Foldable Commode Chair,Folding Commode For Elderly,Adjusting Steel Commode Chair,Folding Commode For Disabled
Ningbo Cland Medical Instruments Co., Ltd. , https://www.ruipumedical.com