Anti-heat stress feed additive for beef cattle in fattening period under southern damp and hot environment and application of anti-heat stress feed additive

Abstract

The invention relates to an anti-heat stress feed additive for beef cattle in a fattening period under a southern damp and hot environment. The anti-heat stress feed additive comprises 8-10% of special yeast for rumination, 35-45% of rumen bypass fat powder, 3-5% of rumen bypass gamma-aminobutyric acid, 4-6% of coating VC, 20-25% of magnesium oxide, 10-18% of potassium chloride and 2.5-4% of sodium saccharin. The feed additive is added according to 1.5% of the feed amount of the total mixed ration (TMR) of cattle every day. The additive is used for feeding the cattle in two times after being mixed and stirred uniformly with an original TMR for a cattle farm every day. A yeast product regulates cattle rumen fermentation and promotes the digestion of feed through yeast products; the gamma-aminobutyric acid, VC, magnesium oxide and potassium chloride all have the effects of regulating body temperature, resisting stress and increasing immunity; the fat powder can promote beef cattle to deposit quickly during the fattening period; and the joint supplement of potassium and magnesium has better anti-heat stress effect than a single addition of potassium chloride. The feed additive can significantly prevent the occurrence of heat stress in fattening beef cattle in the high temperature season in summer, increase the daily gain of cattle, the final weight and reduce the feed-to-weight ratio, and achieve good feeding effects.

Description

technical field [0001] The invention belongs to the technical field of feed additives for livestock and poultry, and in particular relates to the research on a heat stress-resistant feed for beef cattle during the fattening period under the conditions of the southern hot and humid region, and also relates to the application of the feed additive. Background technique [0002] With global warming, heat stress has become an important factor that endangers beef cattle production. Beef cattle have the biological characteristics of being resistant to cold and heat, and the suitable living temperature is 10-15°C. When the ambient temperature is high, various functions of beef cattle will produce heat stress reactions, and the production performance will be greatly affected. As usual, animal productivity will decrease, Reduced reproductive rate, reduced product quality, weakened immunity and other issues. This has become one of the main factors restricting the development of animal...

AI Technical Summary

Problems solved by technology

[0003] The intensity and scale of beef cattle breeding in the south of my country is not as good as that in the north. The beef cattle breeding management is usually in the form of extensive or intensive free-range breeding. This breeding method will lead to problems such as low feed conversion rate, low reproductive efficiency, and serious environmental pollution.

At the same time, due to geographical factors, summer in southern my country is hot and humid, and the air temperature is 30-37°C, which is much higher than the suitable living temperature for beef cattle, making beef cattle prone to moderate heat stress or even high heat stress, resulting in increased respiration and heart rate, Increased drinking water, reduced feed intake, increased sweating, increased body temperature, even irregular rhythm, rapid pulse, palpitations, ataxia, loss of appetite, severe cases lead to animal death, immunity to beef cattle, food intake The production performance such as weight, growth rate, and daily weight gain has a relatively large negative impact, which cannot meet the market demand for beef cattle

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