Cow roughage processing method
Smashing After smashing and mixing with concentrate, it can increase feed intake and increase digestibility. Crushing roughage can speed up feed emptying and increase feed intake. However, crushing the roughage or cutting the roughage is very short, the chewing and ruminating time, the amount of saliva secretion, the residence time of the feed in the rumen, the digestibility of the roughage, the ratio of acetic acid to propionic acid in the rumen, the pH value, and the milk fat percentage are all reduced. Not conducive to the health and milk production of dairy cows. Long roughage maintains the structural layer of the rumen contents and stimulates rumen motility, ruminal and salivary secretion. Therefore, there should be at least 1/3 of the long roughage (2-5 cm) in the diet. Soaking The chopped roughage or clam shells are sprinkled with water or soaked in 0.2% saline. After 24 hours, the texture is softened and mixed with the mixture and bran to change the palatability and increase the feed intake. Alkalinization The straw is cut into 3-4 cm long, and the 1.6% sodium hydroxide solution is evenly sprayed on the straw to make it moist. After stacking for a few days, it is taken out and fed directly to the cow. Calcification method Soak the straw with 1% quicklime or 3% slaked lime milk, about 8-10 kg of straw per 100 kg of lime milk, and take out the direct feeding cow for 12-24 hours. Or take 100 kg of short straw, mix 0.5-1.0 kg of salt and 200-250 kg of water with 3 kg of quicklime or 4 kg of slaked lime, mix well, place on flat or wooden board for 24-36 hours, directly Feed the cows. Ammonia treatment First, the treatment of anhydrous ammonia, the water content of the straw is adjusted to 30% -40%, and a plastic tube is placed at a height of 0.5 meters to use ammonia water. Grasshoppers are sealed with a 0.5 mm thick plastic film, depending on the ambient temperature. Seal at 2-4 weeks when the temperature is 2 °C. After drying, it is dried and the ammonia smell disappears and fed. The second is ammonia water treatment. When the short straw is stacked in the pool (窖), the 3% concentrated ammonia water is evenly sprayed into the crucible according to the ratio of the straw weight of 1:1. After filling the pool, the film is covered and sealed. The sealing time is determined by the ambient temperature. It takes 8 weeks for less than 5 °C, 4-8 weeks for 5-15 °C, 1-4 weeks for 15-30 °C, and 1 week for 30 °C. Then dry the straw and dry it for feeding. Feed ammoniation can increase the protein content of roughage by 4%-6%, and increase the average feed intake by 16%-60% per head per day, and increase the digestibility of straw organic matter. The disadvantage is that the amount of ammonia loss is large, and about 2/3 of ammonia is lost after opening. Kitchen Cabinets,Solid Wood Kitchen Cabinet,Multilayer Board Kitchen Cabinet,Outdoor Kitchen Cabinet PRO CABINET SOLUTION PTY LTD , https://www.pcscabinet.com.au