Method for reducing copper accumulation in fattening pigs and copper content in pig manure

A technology for fattening pigs and content, applied in the field of breeding, can solve the problems of reduced pork quality, destroyed ecological balance, shortened fresh-keeping period, etc., and achieves the effects of reducing fecal copper discharge, improving safety, and reducing accumulation.

Inactive Publication Date: 2018-05-11
云南牧道生物技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the 1990s, it has become a trend in my country to add high doses of copper to pig feed. While improving the performance of piglets, it has brought a series of unavoidable problems, such as causing copper poisoning in animals, causing certain nutrients in animals Lack, increase feed cost, affect food safety, endanger human health, cause environmental pollution, destroy ecological balance, etc.
Copper is also a catalyst for pro-oxidation, and can also reduce the nutritional value of oil and vitamins. Excessive copper will cause accelerated oxidation of muscle lipids, produce bad smell, and cause pork quality to decline (Morrissey et al., 1998); The content of unsaturated fatty acids increases, which makes pork easy to oxidize, difficult to store, and shortens the shelf life; because people don’t know enough about copper, the growth-promoting effect of copper is infinitely magnified

Method used

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  • Method for reducing copper accumulation in fattening pigs and copper content in pig manure
  • Method for reducing copper accumulation in fattening pigs and copper content in pig manure
  • Method for reducing copper accumulation in fattening pigs and copper content in pig manure

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] 1) Preparation of copper-reducing premix

[0019] When the premix is ​​made, no inorganic or organic copper is added to obtain a copper-free premix;

[0020] 2) Preparation of copper-reducing feed

[0021] Mix the premix prepared in step 1) with corn, soybean meal, wheat bran and soybean oil to prepare a feed, wherein the content of each raw material is 65% of corn, 20% of soybean meal, 10% of wheat bran, 1% of soybean oil and premix 4%;

[0022] 3) Feeding

[0023] The pig grows to a body weight of 89.58±9.7kg, starts to feed the feed with copper sulfate addition of 25ppm, and starts to feed the copper-reduced feed prepared in step 2) two weeks before the growing and fattening pig is slaughtered;

[0024] Preferably, the breeding in step 3) adopts a cement ground culture mode or a fermentation bed culture mode.

Embodiment 1

[0027] Experiments on the effects of different copper sources and levels on the production performance, blood copper and fecal copper of growing pigs:

[0028] The experiment adopted a 2×2 factorial design, and 72 growing pigs aged 35-70 days were used as the research objects, and were randomly divided into four groups, 18 pigs in each group, with three repetitions in each group, and each repetition (6 males and females, half and half) , adding different copper sources (copper methionine, copper sulfate), to study the effects of different copper sources and levels on the performance, blood copper and fecal copper of growing pigs. The amount of copper added is shown in Table 1.

[0029] Table 1 Different copper sources and addition levels in each test group

[0030]

[0031]

[0032] test results:

[0033] Table 2. Growth performance index table

[0034]

[0035] It can be seen from Table 2 that the average daily weight gain from high to low is group A, group D, gro...

Embodiment 2

[0045] Effects of Different Breeding Modes and Later Copper Reduction on Production Performance and Fecal Copper Content of Finishing Pigs

[0046] The fattening pigs with a body weight of more than 100kg and 4 weeks before slaughter were selected as the research objects. They were raised in two breeding modes: cement floor and fermentation bed. They were fed on the 21st, 14th, and 7th days before slaughter without exogenous supplementation. Copper diets were used to study the effects of different breeding models and copper withdrawal in the later period on the performance, blood copper, liver copper and copper excretion in the feces of fattening pigs.

[0047] Experimental design: 2×3 factorial design, 2 different breeding modes: cement ground farming and fermentation bed farming; 3 different feeding times of copper-free diets: 21 days, 14 days, and 7 days before slaughter. Experimental animals: select more than 100kg of body weight, 180 fattening pigs 4 weeks before going to...

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Abstract

The invention discloses a method for reducing copper accumulation in fattening pigs and the copper content in pig manure. The method includes the following steps of firstly, preparing a copper reducing premix; secondly, preparing copper reducing feed; thirdly, feeding the pigs. The method has the advantages that the copper excretion of the pig manure can be remarkably reduced by feeding the growing and fattening pigs with the copper reducing feed two weeks before slaughtering, and the pollution to the environment is reduced; by feeding the pigs with the copper reducing feed, the deposit rate of blood copper, serum copper, liver copper and longissimus dorsi copper in pig bodies can be reduced, the accumulation of the copper element in animal bodies is reduced, and the animal food safety isimproved; by adding low-dosage (25 ppm) inorganic copper or semi-amount organic copper to the feed for the growing and fattening pigs, the growth requirements of growing pigs can be met, and great practical significance in environment protection is achieved; the sales price of organic copper on the market is higher than that of inorganic copper, many farmers cannot accept the price, the growth requirements of the growing pigs can be met by adding 25 ppm of copper sulfate to the daily feed of the growing pigs, and meanwhile the manure copper discharge amount is greatly reduced.

Description

technical field [0001] The invention belongs to the field of breeding, and in particular relates to a method for reducing copper accumulation in fattening pigs and content in pig manure. Background technique [0002] Copper is an indispensable trace element for the growth of livestock and poultry, and it has a wide range of functions in animals. Copper is a component or activator of many enzymes. It participates in the formation of blood, can promote the normal development of the brain and spinal cord, and promote the absorption of iron in the intestine. Copper is also closely related to the formation of bones. Domestic studies have found that adding high-dose copper to the diet of early-weaned piglets can significantly increase the feed intake and daily gain of piglets, improve the utilization of protein and fat by piglets, and increase the feed conversion rate, which has a significant effect on the growth of piglets. enhancement. Since the 1990s, it has become a trend in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/02A23K10/30A23K10/37A23K20/158A23K50/30
CPCA01K67/02A23K10/30A23K10/37A23K20/158A23K50/30Y02P60/87
Inventor 计乔平郭荣富王红琴岳虹杨旭张春勇李鸿俊谢洪武魏建宏周国华罗何勇单晓芬张先勤
Owner 云南牧道生物技术有限公司
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