Concentrated feed capable of improving lactating performance of dairy cows and lowering nitrogen excretion

Abstract

The invention relates to concentrated feed capable of improving lactating performance of dairy cows and lowering nitrogen excretion. The concentrated feed is prepared from, by weight, 46%-50% of corn, 18%-24% of bran, 6%-12% of cottonseed meal, 11%-18% of bean pulp, 0.7%-1.2% of table salt, 1%-2% of baking soda, 0.5%-1% of magnesium oxide, 1.0%-2.0% of rock flour, 0.80%-1.2% of a trace mineral premix, 0.20%-0.30% of vitamin AD3 powder, 0.05%-0.15% of cinnamyl aldehyde and 0.1%-0.3% of rumen protected methionine. The dairy cows are fed with the above concentrated feed, lactating performance can be improved by performing nutrition regulation on the dairy cows, and the purpose of reducing environmental pollution by effectively reducing nitrogen excretion of the dairy cows can be achieved; the main method for improving the lactating performance and reducing the nitrogen excretion of the dairy cows is to add 0.05%-0.15% of cinnamyl aldehyde and 0.1%-0.3% of rumen protected methionine; utilization rate of the dairy cows on nitrogen and digestibility of the dairy cows on other nutrients are increased, the lactating performance is improved, and the nitrogen excretion is reduced, dual purposes of improving the lactating performance and reducing the nitrogen excretion of the dairy cows are achieved, and the concentrated feed can be widely applied to preparation of the concentrated feed for the dairy cows.

Description

technical field [0001] The invention belongs to the field of feed in animal husbandry technology, and in particular relates to a concentrated feed which can not only improve milk production performance of dairy cows but also reduce nitrogen excretion. Background technique [0002] With the rapid development of animal husbandry, the resulting environmental pollution is becoming more and more serious. According to reports, the annual excretion of livestock and poultry manure in the country has exceeded the sum of the discharge of industrial waste residue and urban domestic waste in the country. Important reasons that cannot be ignored; At present, the environmental pollution that attracts attention mainly includes nitrogen, phosphorus, methane, etc. The conversion rate (utilization rate) of nitrogen in dairy cows is low, and the conversion rate of nitrogen in the diet into nitrogen in milk is only 30% on average, and most of the remaining nitrogen is excreted through urine and...

AI Technical Summary

Problems solved by technology

[0005] At present, in terms of dairy cattle concentrate feed preparation technology, the conventional practice is only focused on how to make up for the insufficient nutrition of roughage in terms of quantity and full price to meet the nutrition required by dairy cows, but basically ignores the dairy cows. How much impact will the excrement after absorption and absorption have on the environment, that is to say, the pollution caused by the nitrogen excretion of dairy cows to the environment is basically not considered in the preparation of concentrated feed for dairy cows, or only single regulation of rumen fermentation (such as in the refined feed) Yeast culture is added to the feed) or rumen amino acids are added (such as rumen methionine is added to the concentrate feed), the purpose is only to improve the milk production performance of dairy cows, and it has not considered both improving milk production performance and reducing nitrogen excretion In other words, the increase in production and income, energy conservation, emission reduction and environmental pollution reduction have not been taken into consideration

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