Mixed feed for improving fattening pig carcass quality under low-nitrogen-discharging daily ration

Abstract

The invention relates to a mixed feed for improving fattening pig carcass quality under low-nitrogen-discharging daily ration ; the feed is prepared from the components by the weight percentage: 50-75% of corn, 8-20% of soybean meal, 5-15% of cottonseed proteins, 1-15% of wheat bran, 5-15% of rice bran, 0.5-1.5% of soybean oil, 0.5-1.5% of calcium hydrogen phosphate, 0.5-1.5% of calcium carbonate, 0.5-1.5% of lysine sulfate, 0.1-1.0% of threonine, 0.01-0.05% of methionine, 0.01-0.05% of tryptophan, 0.1-1.0% of sodium chloride, 0.1-1.0% of betaine, 0.1-1.0% of sodium bicarbonate, 0.01-0.1% of calcium propionate, 0.01-0.1% of 66% ethoxy quinoline, 0.01-0.1% of a microecological preparation, and 0.5-2% of a compound premixed feed for fattening pigs. The mixed feed has effects on pig growth performance, pork quality, and metabolism of lipids and proteins in blood, and also plays positive roles in adjusting the distribution of pork fat, improving the fattening pig carcass quality, enhancing the flavor of pork, reducing nitrogen emissions and protecting the environment.

Description

Technical field [0001] The invention involves the field of animal nutrition and feed technology, and specially involves a combination of feed that improves the quality of fattening pigs under a low nitrogen discharge diet. Background technique [0002] my country's protein feed resources seriously relied on foreign imports. In 2014, 73 million tons of soybean were imported, while my country ’s annual output of soybeans was about 10 million tons. The shortage of protein feed resources seriously restricted the development of my country's animal husbandry. The problem has attracted the attention of the whole society.Studies have shown that the rough protein of pig daily foods is reduced by 1 percentage point, and the emissions of nitrogen in dung urine can be reduced by 8%to 13%. Based on the ideal amino acid model, the raw pig daily crude protein levels are balanced and synthetic.The impact, but under the conditions of low nitrogen discharge diet, the body quality decreased due to ...

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