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Low-nitrogen-emission daily ration for growing pigs

A technology for nitrogen discharge and growing pigs, applied in animal feed, additional food elements, animal feed, etc., can solve the problems of less research on amino acid requirements, improve intestinal health, increase absorption rate, and reduce nitrogen discharge Effect

Inactive Publication Date: 2011-10-19
CHINA AGRI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current research mainly focuses on the reduction of dietary protein level, the addition of synthetic amino acids and the application of net energy system in low-nitrogen emission diets. There are few studies on amino acid requirements in low-nitrogen emission diets.

Method used

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  • Low-nitrogen-emission daily ration for growing pigs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1. Verifying the optimal ratio of tryptophan to lysine in the standard ileum of growing pigs under the condition of low nitrogen emission diet

[0022] 1.1 Experimental animals and experimental diets

[0023] The experiment adopted a completely randomized design. In experiment 1, 180 Duroc × Landrace × Large White Sanyuan healthy growing pigs with an average initial body weight of 25.08±2.72kg were selected. According to the principle of similar body weight and similar genetic basis, they were randomly divided into 3 treatments, and each treatment had 6 replicates ( pen), 10 pigs per pen, half male and half female, and the test period was 35 days. In the second experiment, 300 Duroc × Changbai × Large White Sanyuan healthy growing pigs with an average initial body weight of 24.74±2.38kg were selected, divided into 5 treatments, each treatment had 6 repetitions (columns), and 10 pigs per pen were tested. The period is 35 days.

[0024] The dietary crude protei...

Embodiment 2

[0072] Example 2. Verifying the optimal ratio of threonine and lysine in the standard ileum of growing pigs under the condition of low nitrogen emission diet

[0073] 1.1 Experimental animals and experimental diets

[0074] In experiment 1, 144 Duroc × Landrace × Large White Sanyuan healthy growing pigs with an average initial body weight of 22.14±1.89kg were selected. According to the principle of similar weight and genetic basis, they were randomly divided into 3 treatments, and each treatment had 6 repetitions. There were 8 pigs in each repetition (column), and the test period was 35 days. In Experiment 2, 300 Duroc × Landrace × Large White three-way hybrid growing pigs with an average initial body weight of 22.65±2.64kg were selected. According to the principle of similar weight and genetic basis, they were randomly divided into 5 treatments, and each treatment had 6 repetitions. Each repetition (column) has 10 pigs, half male and half female, and the test period is 39 da...

Embodiment 3

[0115] Example 3. Verifying the optimum ratio of sulfur-containing amino acids and lysine in the standard ileum of growing pigs under the condition of low nitrogen emission diet

[0116] 1.1 Materials and methods

[0117] 1.1.1 Test animals and test diets

[0118] The experiment adopts single factor experiment design. A total of 360 healthy fattening pigs of Duroc × Landrace × Large White Sanyuan with an average initial body weight of 25.67±2.74kg were selected. According to the principle of similar weight and genetic basis, they were randomly divided into 5 treatments, and each treatment had 6 replicates. Repeat (column) 12 pigs, half male and half female, and the test period is 25-50kg stage.

[0119] The experimental diets were all low-nitrogen emission diets, and the protein level was lowered by 4 percentage points based on the crude protein level of growing pig diets recommended by the "Pig Feeding Standards" (2004), and the net energy level of the diets was uniformly s...

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Abstract

The invention discloses a low-nitrogen-emission daily ration for growing pigs. The low-nitrogen-emission daily ration contains protein, lysine, tryptophan, threonine and sulfur-containing amino acid, wherein the net energy content of the low-nitrogen-emission daily ration is 2.30 to 2.45 Mcal / kg, and the content of the protein is 11.5 to 15.5%; the content of the lysine capable of being digested by standard ileums in the low-nitrogen-emission daily ration is 0.9 to 1.02%, the ratio of the tryptophan capable of being digested by the standard ileums to the lysine capable of being digested by the standard ileums is not lower than 0.23, the ratio of the threonine capable of being digested by the standard ileums to the lysine capable of being digested by the standard ileums is not lower than 0.66, and the ratio of the sulfur-containing amino acid capable of being digested by the standard ileums to the lysine capable of being digested by the standard ileums is not lower than 0.61. According to the low-nitrogen-emission daily ration disclosed by the invention, by decreasing the crude protein level in a daily ration prescription in Feeding Standard of Swine (2004) and supplementing synthetic amino acids, the absorptivity of the amino acids in animals is increased, the feed cost is lowered, and the economic benefits of swine industry is enhanced; the decrease of nitrogen emission in environment is beneficial to alleviation of the problem of protein feed insufficiency to a certain extent; and the weight gain of growing pigs and the feed conversion rate are not influenced.

Description

technical field [0001] The invention relates to a low-nitrogen emission ration for growing pigs. Background technique [0002] According to customs statistics, in 2009-2010, the total amount of foreign soybeans imported by my country reached 54.8 million tons. The shortage of protein feed resources has seriously affected the development and economic benefits of my country's animal husbandry. The environmental problems brought about by nitrogen emissions in livestock and poultry production have added more severe challenges to the development of animal husbandry under the background of low carbon. How to reduce the dependence on foreign imports of protein feed resources and reduce the discharge of pollutants in livestock and poultry production has become one of the major issues recognized by the animal nutrition community. Therefore, it is the general trend of the development of animal husbandry to achieve energy saving and emission reduction without affecting the breeding be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/18A23K1/16A23K20/142A23K20/147A23K50/30
Inventor 谯仕彦张桂杰宋青龙
Owner CHINA AGRI UNIV
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