Mixed feed capable of improving carcass quality and drip loss of fattening pig under low-nitrogen-emission daily ration condition

Abstract

The invention relates to a mixed feed capable of improving carcass quality and drip loss of a fattening pig under a low-nitrogen-emission daily ration condition. The mixed feed is composed of 60 to 80% of corn, 8 to 20% of soybean meal, 5 to 15% of wheat bran, 0.5 to 2% of calcium hydrogen phosphate, 0.2 to 1% of calcium carbonate, 0.5 to 2% of lysine sulfate, 0.1 to 1.0% of threonine, 0.01 to 0.05% of methionine, 0.01 to 0.05% of tryptophan, 0.1 to 1.0% of sodium chloride, 0.1 to 1.0% of sodium bicarbonate, 0.01 to 0.5% of N-carbamylglutamic acid, 0.01 to 0.5% of magnesium sulfate, 0.01 to 0.5% of phytase, 0.01 to 0.5% of choline chloride, 0.01 to 0.1% of calcium propionate, 0.01 to 0.1% of ethoxy quinoline with a concentration of 66%, 0.01 to 0.1% of a microecological preparation, 0.001 to 0.1% of vitamin E, 0.001 to 0.01% of vitamin A and 0.5 to 2% of a composite premixed feed for the fattening pig. The mixed feed is applied to fattening pigs weighing 80 to 120 kg, can substantially reduce nitrogen emission in production of the fattening pigs, improves the carcass quality and drip loss of the fattening pigs under the low-nitrogen-emission daily ration condition, enhances the meat quality of the fattening pigs, and increases breeding benefits of live pigs.

Description

technical field [0001] The invention relates to the technical field of animal nutrition and feed, in particular to a compound feed for improving the carcass quality and drip loss of fattening pigs under the condition of low nitrogen discharge diet. Background technique [0002] my country's protein feed resources are heavily dependent on foreign imports. In 2014, 73 million tons of soybeans were imported, while my country's annual output of soybeans was about 10 million tons. The shortage of protein feed resources has seriously restricted the development of my country's animal husbandry. The environmental protection caused by nitrogen emissions in pig breeding This problem has attracted the attention of the whole society. Studies have shown that if the crude protein in the pig diet is reduced by 1 percentage point, the nitrogen discharge in the feces and urine can be reduced by 8% to 13%. However, under the condition of low nitrogen emission diet, the carcass quality of fatt...

AI Technical Summary

Problems solved by technology

Studies have shown that if the crude protein in the pig diet is reduced by 1 percentage point, the nitrogen discharge in the feces and urine can be reduced by 8% to 13%. However, under the condition of low nitrogen emission diet, the carcass quality of fattening pigs decreased due to excessive fat deposition, and the drip loss of finishing pigs increased after slaughter