Quality Appraisal High-quality silage is blue-green or yellow-green. If the color of the silage is found to be black or brown, the silage has become deteriorating and moldy, and all the silage that has been deteriorating must be taken out and then fed to the cows. High-quality silage is sweet and sour, with a strong scent or pear flavor. If the smell is sour, it means that mildew has occurred in the silage, the cause must be identified, and appropriate remedial measures must be taken to feed the cow. The quality silage is soft and moist in its hands. If it is sticky or dry and hard in the hands, the silage has become mildewed and must be treated before feeding the cows.
Feeding dairy cows with a body weight of 500 kilograms and a daily milk production of 25 kilograms or more can feed 25 kilograms of silage and 5 kilograms of hay each day. Dairy cows that produce more than 30 kilograms of milk each day can feed 30 kilograms of silage and about 8 kilograms of hay. A dairy cow with a body weight of 350-400 kilograms and a daily milk yield of 20 kilograms can feed 20 kilograms of silage and 5-8 kilograms of hay. Dairy cows with a body weight of 350 kilograms and a daily milk production of 15 to 20 kilograms can feed 15 to 20 kilograms of silage and 8 to 10 kilograms of hay. Dairy cows with a daily milk output of 15 kg or less can feed 15 kg of silage and 10-12 kg of hay. Cows should stop feeding silage 15 days before and 15 days after delivery. Dry-milk cows are fed 10 to 15 kilograms of silage each day, and other supplies of hay are appropriate. Breeding cattle is best controlled within 5 to 10 kg.
Feeding methods should be fed less at the beginning, and then gradually increase to sufficient quantities to allow the cows to have a process of adaptation and must not be fed on a one-off basis, resulting in too much silage in the rumen of the dairy cows and excessive acidity, which will affect the quality of the cows. Normal intake and milk production performance. Baking soda should be added to cows in a timely manner. When silage is fed, the acidity of the cow's rumen is reduced and acidosis can easily occur. It can add 13 å° baking soda to the concentrate to promote gastric peristalsis, neutralize acidic substances in the rumen, increase acidity and alkalinity, increase feed intake, increase digestibility, and increase milk production. Each time the silage fed is mixed with the hay, the cows should be fed again to avoid picking the food. There are many dairy cows in the countryside and the feeding method twice a day is extremely unscientific. One is to increase the burden on the rumen of dairy cows and affect the number and time of normal “chewing†of dairy cows. Reduce the conversion rate of feed, long-term easy to cause cow's stomach before the disease. The second is affecting the digestive rate of dairy cows, resulting in decreased milk production and fat percentage. Frozen silage cannot be fed to dairy cows. It must be thawed before feeding, otherwise it is easy to cause bovine abortion.
It is advisable to take one or more shots every day in the afternoon or in the afternoon. The thickness should be no less than 10 centimeters each time to ensure that the fresh quality of the silage is good, the palatability is good, and the nutrient loss is reduced to the lowest point. The best effect of feed. Remove the silage can not be exposed to sunlight, do not bulk heap, scattered, it is best to use bags, placed in the cow house in the shade. After taking the silage each time, it is re-stepped again and covered with plastic cloth.
Precautions During the feeding process, if dairy cows are found to have diarrhea, they should immediately reduce or stop feeding. Check whether silage is mixed with mildew or cause diarrhea due to other diseases. Wait until the cow returns to normal and continue feeding. Every day, clear the feeding trough, especially at the dead end, clean up the degraded silage and add fresh silage. After feeding silage, the amount of concentrated feed should be reduced as appropriate, depending on the condition of the dairy cows and other production performance. Silage pits should be strictly protected against rodents and some diseases should be transmitted to livestock.
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