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Feed additive capable of relieving dairy cow heat stress and application thereof

A feed additive, heat stress technology, applied in application, animal feed, animal feed, etc., can solve the problems of decreased rumen activity and contractility, reduced roughage intake, insufficient nutrient intake of dairy cows, etc., to reduce mastitis. morbidity, the effect of improving the reproductive rate of dairy cows, improving antioxidant capacity and disease resistance

Inactive Publication Date: 2017-11-07
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During heat stress, dairy cows usually reduce the intake of roughage in order to reduce heat production; at the same time, breathing is accelerated, the catabolism of protein, fat and sugar in the body is enhanced, and anabolism is reduced; and under heat stress conditions, the gastrointestinal The passing rate of food slows down, and the reflexivity causes the rumen activity and contraction force to decrease, which inhibits the rumination behavior of dairy cows to a certain extent, reduces the rumination efficiency of dairy cows, changes the environment in the rumen, increases the pH value, and the ammonia nitrogen content and The concentration of total volatile fatty acids decreases, the body is in a negative balance of energy and nitrogen metabolism, and the blood flow to the udder of the cow decreases, which eventually leads to insufficient nutritional intake of the body of the cow and a decrease in milk production

Method used

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  • Feed additive capable of relieving dairy cow heat stress and application thereof
  • Feed additive capable of relieving dairy cow heat stress and application thereof
  • Feed additive capable of relieving dairy cow heat stress and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Preparation of Feed Additives Alleviating Heat Stress in Dairy Cows

[0025] Accurately weigh 25kg (50%) of raw material powdered oil (Heilongjiang Yanglin Oil Group), vitamin C 75g (0.15%), tea polyphenols 175g (0.35%), honeysuckle 350g (0.7%), Houttuynia cordata 250g (0.5%) %), make up to 50kg with maltodextrin. Stir the above-mentioned raw materials evenly with a small mixer, and mix the prepared feed additive for relieving the heat stress of dairy cows into the dairy cow concentrate (Chengdu Weilaite Technology Co., Ltd.) according to the ratio of 8% (w / w) during use. for feeding cows.

Embodiment 2

[0026] Example 2: Feed additives for relieving heat stress in dairy cows are used to prevent heat stress in dairy cows

[0027] Select 50 Holstein dairy cows with similar weight, age, parity, milk production and no mastitis, and conduct experiments under heat stress conditions, with a temperature range of 32-40°C and a relative humidity of 72-79% (July Mid-August to mid-August, Jinhua, Zhejiang). The 50 dairy cows were divided into two groups, one group was a control group, which was fed with conventional rations; the other group was an experimental group, which was fed with a ration containing the feed additive of the present invention. After 15 days of continuous experimentation, the daily feed intake and daily milk production of each group of dairy cows were recorded for 3 days, and the average daily milk production of each group of dairy cows was calculated. Part of the milk samples collected from each group were used for the determination of milk components, and at the s...

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Abstract

The invention relates to a feed additive capable of relieving dairy cow heat stress, and belongs to the technical field of animal feed additives. The additive comprises powdered oil, vitamin C, tea polyphenol, honeysuckle, houttuynia cordata and maltodextrin, and the additive with the mass percentage of 5% to 12% is added into dairy cow concentrated feed, the additive is uniformly mixed, and whole-day feeding is carried out on dairy cow in summer. According to the feed additive, the tolerance of dairy cow on megathermal climate is improved, the oxidation resistance is strengthened, the heat stress of dairy cow is effectively relived, and problems that the dry matter intake is decreased and the postpartum energy is negatively balanced caused by the heat stress of dairy cow in summer high temperature seasons are solved, the milk yield and dairy food quality of dairy cow with heat stress are improved, and the feed additive has wide application prospects.

Description

(1) Technical field [0001] The invention relates to a feed additive for relieving heat stress of dairy cows and an application thereof, belonging to the technical field of animal feed additives. (2) Background technology [0002] Heat stress in dairy cows is when cows are stimulated by excessively high temperatures that exceed their own thermoregulation capabilities in hot summer, acting on the hypothalamus-pituitary-adrenal cortex system, causing the body's non-specific defense responses and specific disorders. The sum of a series of physiological and biochemical reactions. Most of the domestic dairy cow breeds are Chinese Holstein cattle, which are characterized by being afraid of heat and cold, and are extremely sensitive to high temperature in summer. The main reason is that they are large in size, small in surface area per unit weight, and have good thermal insulation performance of body surface coat and body tissue. , Underdeveloped sweat glands lead to less heat diss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K50/10A23K20/158A23K20/174A23K10/30
CPCA23K10/30A23K20/158A23K20/174A23K50/10
Inventor 王争光梁晶婕王邵雨
Owner ZHEJIANG UNIV
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