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Low nitrogen emission heifer rations

A technology for backup dairy cows and nitrogen emission, which is applied in animal feed, additional food elements, animal feed, etc., can solve the problem of less research on backup dairy cows, and achieve the effect of reducing the amount of use and nitrogen emission.

Active Publication Date: 2017-12-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic research on the effect of protein intake on nitrogen excretion in dairy cows mainly focuses on lactating dairy cows, while there are relatively few studies on replacement dairy cows

Method used

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  • Low nitrogen emission heifer rations
  • Low nitrogen emission heifer rations
  • Low nitrogen emission heifer rations

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, a kind of diet with low protein concentration, its composition and weight are listed in Table 1.

[0021] Table 1 Feed components and their weight (unit: % dry matter)

[0022]

[0023]

[0024] Premix (Phosphorus-free): Each kilogram of phosphorus-free premix contains vitamin A 240000IU, vitamin D 60000IU, vitamin E 1200IU, zinc 2940mg, selenium 21mg, iodine 38mg, cobalt 8mg, manganese 630mg, copper 630mg, nicotinamide 400mg , and the rest is carrier zeolite powder. All of the above are elemental contents, and the premixed material passes through a 80-mesh sieve. The zinc is zinc sulfate, the selenium is sodium selenite, the iodine is potassium iodide, the cobalt is cobalt chloride, the manganese is manganese sulfate, and the copper is copper sulfate.

[0025] After testing, in the low protein concentration diet: crude protein 11.9%, neutral detergent fiber 58.6%, acid detergent fiber 29.1%, calcium content 0.8%, phosphorus content 0.22%.

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Abstract

The invention relates to the field of cow forage, in particular to replacement heifer daily rations for low nitrogen discharge. The replacement heifer daily rations are prepared from the following ingredients (dry substances) in parts by weight: 27-28 parts of silage corn, 40-41 parts of Chinese wild rye; 12-13 parts of corn, 2-3 parts of barley, 6-7 parts of bean pulp, 3-4 parts of rapeseed dregs, 4-5 parts of DDGS and 2-3 parts of a non-phosphorus premix. According to the replacement heifer daily rations, not only can the healthy growth of a Holstein replacement heifer be guaranteed, but also the consumption of daily ration protein can be reduced. Therefore, the dung and urinary nitrogen discharge of the replacement heifer can be reduced.

Description

technical field [0001] The invention relates to the field of dairy cow feed, in particular to a ration for back-up dairy cows with low nitrogen emission, in particular to a ration for reducing dung and urine nitrogen emissions from back-up cows by reducing the protein concentration of the ration. Background technique [0002] With the rapid development of my country's dairy industry, especially with the improvement of intensive production of dairy cows, the protein content of diets is often too high, resulting in more and more serious nitrogen pollution to the environment. Nitrogen excreted by dairy cows into the environment is mainly urine nitrogen and fecal nitrogen, and the excreted fecal nitrogen and urine nitrogen affect the environment in different ways. At present, domestic research on the effect of protein intake on nitrogen excretion in dairy cows mainly focuses on lactating dairy cows, while there are relatively few studies on replacement dairy cows. [0003] The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K10/30A23K10/37A23K10/38A23K20/174A23K20/20A23K20/28A23K50/10
CPCY02P60/87
Inventor 刘红云张彬王翀刘建新
Owner ZHEJIANG UNIV