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Method of improving quality of pig trunk

A pig carcass and quality technology, applied in the field of pig production, can solve problems such as human health hazards, achieve the effects of prolonging shelf life, reducing fat deposition, and improving carcass lean meat percentage

Inactive Publication Date: 2007-08-22
周婕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, some farmers added β-stimulants (such as clenbuterol hydrochloride, ractopamine, etc.) to feed to improve the carcass quality of pigs. Hazards of residues to human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] 80 growing and finishing pigs with an average weight of 23.5kg were selected and divided into two groups on average. The feed of the test group was supplemented with 2% conjugated linoleic acid, and the feed of the control group was supplemented with 2% rapeseed oil. When the fattening reaches about 110kg, slaughter and analyze the carcass lean meat percentage and backfat thickness. The results showed that, compared with the control group, the carcass lean meat percentage of the CLA test group increased by 1.5%, and the backfat thickness decreased by 2.8mm (about 11%).

Embodiment 2

[0010] A group of pigs weighing about 25kg were selected, and 0, 0.5%, and 1% of conjugated linoleic acid were added to the diet respectively. After feeding for three and a half months, slaughter the carcass, cool the carcass, and then analyze the carcass meat appearance indicators (meat color, marbling, water resistance), the results are as follows (see Table 1):

[0011] Table 1 Determination of Pork Quality

[0012]

Subjective flesh color

subjective marble

pattern

Minolta

L *

Minolta

a+

Moisture (mg)

control group

2.2±0.70

1.9±0.6

49±3

9.9±3

96.2±52

0.5% CLA

2.5±0.53

2.1±0.4

47±4

9.3±2

80±63

1% CLA

2.9±0.40

2.2±0.5

47±4

10.1±3

78.8±41

[0013] Note: The sampling site is from the longissimus dorsi muscle

[0014] Subjective flesh color: the scoring range is 1-5, the expected value is 3-4,...

Embodiment 3

[0019] A group of pigs weighing about 25kg were selected, and 0, 4.8%, and 9.5% of conjugated linoleic acid were added to the feed respectively. After feeding for three and a half months, they were slaughtered, the carcasses were cooled, and the composition of fatty acids in muscle and back fat was analyzed. The results are as follows (see Table 2):

[0020] Table 2 Determination of fatty acid content

[0021] organize

CLA addition ratio

(%)

Saturated Fatty Acid Ratio

(%)

monounsaturated fatty acids

Proportion(%)

polyunsaturated fatty acids

Proportion(%)

muscle

0

33.0

37.9

17.7

4.8

34.7

39.2

15.1

9.5

34.6

35.1

17.3

back fat

0

35.0

41.6

18.9

4.8

40.1

34.4

17.9

9.5

43.5

33.4

15.9

[0022] It can be seen that CLA can reduce the content of unsaturated fatt...

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Abstract

The method of improving quality of pig trunk is to add conjugate linoleic acid or its derivative ester or non-toxic derivative salt in 0.01-5 wt% into the feed. Feeding pig with the feed containing conjugate linoleic acid can reduce the fat deposition of pig obviously, raise the lean pork rate and fat hardness, and prolong the shelf life of pork.

Description

technical field [0001] The invention relates to the field of pig production, in particular to a method for improving pig carcass quality. Background technique [0002] With the improvement of people's living standards, the consumer demand for meat products has shifted from the satisfaction of quantity to the pursuit of quality, so the quality of pork has been paid more and more attention. China is the world's largest pig-raising country, but due to the poor quality of pork, China's pork exports only account for a small share in the international market, so the production of high-quality pork has always been an urgent problem for us to solve. In the past, some farmers added β-stimulants (such as clenbuterol hydrochloride, ractopamine, etc.) to feed to improve the carcass quality of pigs. hazards to human health. The state has explicitly prohibited the use of such products in livestock and poultry feed. Different from β-stimulants, conjugated linoleic acid (CLA) described i...

Claims

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Application Information

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IPC IPC(8): A23K1/18A23K1/16A23K10/30A23K10/37A23K20/158A23K20/20A23K50/30
CPCY02P60/87
Inventor 周婕
Owner 周婕
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