Feed capable of improving milk yield of milk cow at peak of lactation

Abstract

The invention discloses a feed capable of improving the milk yield of milk cow at the peak of lactation. The feed comprises the following nutritional substances in each kilogram of dry substances by weight: 150 to 180g of crude protein, 160 to 200g of crude fibers, 300 to 400g of neutral detergent fibers, 210 to 212g of acid detergent fibers, 5 to 10g of calcium, 4 to 6g of available phosphorus, 60 to 80g of by-pass protein, and 45 to 75g of by-pass fat, wherein the weight ratio of the by-pass protein to the by-pass fat is (0.9-1.5):1; and the net energy for lactating cow in each kilogram of the dry substances is 1.5-1.7kcal. When the feed is used for feeding the milk cow at the peak of lactation, the requirement of the special digestion system of the milk cow on nutrition can be met, theproduction performance, milk quality and feed conversion efficiency can be improved, and side effects, such as medicinal residues, environmental pollution and the like, are prevented.

Description

technical field [0001] The invention relates to the technical field of animal feed, in particular to a feed capable of increasing the milk production of dairy cows during the peak lactation period. Background technique [0002] Dairy cows in the peak lactation period refer to lactating cows between the post-colostrum period and the 100-day period. The characteristics of dairy cows in this period are that the udder edema disappears, the lactation function is enhanced, and the milk production increases rapidly, generally 30 to 60 days after delivery. It reaches the peak of lactation and then declines slowly. Another characteristic of this stage is that the appetite of dairy cows returns to normal, and the dry matter intake gradually increases. Generally, it reaches the highest dry matter intake 70 to 80 days after delivery, thus forming the nutritional metabolism of dairy cows. The negative balance of nutrition of dairy cows generally lasts for 100 to 200 days. Cows in a stat...

AI Technical Summary

Problems solved by technology

One is to increase the amount of concentrated feed, reduce the amount of roughage fed, and increase the nutrient concentration of the diet, thereby increasing the nutritional intake of dairy cows during the peak lactation period, but feeding too much concentrated feed will increase rumen acidosis and abomasum migration in dairy cows. Incidence of biting and rumen sluggishness, etc. Insufficient roughage will cause milk quality to decline

The other is to feed rumen fat to peak lactation cows to increase the energy concentration of the diet. The problem with feeding rumen fat to peak lactation cows is that too much fat will reduce dry matter intake of cows during peak lactation , reduce the digestion and absorption of fat in the small intestine, and inhibit the absorption of minerals, so feeding too much rumen fat not only increases the feeding cost, but also has no obvious effect on improving production performance

Another is to use feed additives to regulate the metabolism of dairy cows during the peak lactation period. The problems of using feed additives are product retention, environmental pollution and unstable effects.

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