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

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...

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

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