Antibiotic-free feed for fattening pigs and preparation method thereof

Abstract

The invention discloses an antibiotic-free feed for fattening pigs, belonging to the technical field of feeds. The antibiotic-free feed comprises a feed used during a fattening period and a feed used before slaughter, wherein the feed used during the fattening period is prepared from the following materials by weight percent: 54-58 percent of corn, 17-19 percent of soybean meal, 10-14 percent of wheat germ, 8-10 percent of wheat middling, 1 percent of composite additive, 3 percent of premixed materials and 1 percent of trace elements; and the feed used before slaughter is the feed used during the fattening period without adding the trace elements. By adopting the feed, the application of antibiotics can be avoided, the metal level in the produced pork is greatly reduced, the meat color score is improved by 14.55 percent, the marbling score is improved by 9.09 percent, the fat content in muscle is improved by 21.05 percent, and the rate of water loss is reduced by 32.98 percent. By using the feed provided in the invention, the daily gain and the survival rate of the fattening pigs are significantly increased, the feed conversion ratio is reduced, the body weight for slaughter is increased, and feeding days and age in days for slaughter are significantly reduced. In addition, the preparation method disclosed in the invention is simple, and the production cost is low.

Description

technical field [0001] The invention relates to the technical field of feed, in particular to an antibiotic-free fattening pig feed and a preparation method thereof. Background technique [0002] Statistics show that about half of the total production of antibiotics in the world is used for human clinical treatment, and the other half is used for animal husbandry. China is a big country in the use of antibiotics, as well as a big country in antibiotic production: the annual production of antibiotic raw materials is about 210,000 tons, the export of 30,000 tons, and the rest for self-use (including medical and agricultural use). 13 grams). According to the 2006-2007 National Bacterial Resistance Surveillance Results of the Ministry of Health, the annual utilization rate of antibacterial drugs in hospitals across the country is as high as 74%. However, no country in the world uses antibiotics on such a large scale. In developed countries such as the United States and Britain...

AI Technical Summary

Problems solved by technology

[0010] ① Drug residues: The amount of residual antibiotics in animal products is generally very low, and the direct toxicity to the body is also very small, but after long-term consumption, they can accumulate in the body and bring harm to human health

[0012] ③ The development of new drugs is far behind the speed of the emergence of drug-resistant strains: it takes about 10 years to study a new drug and obtain the approval of the US FDA (Food and Drug Administration), and the cost of research is as high as 300 million US dollars. Therefore, the development of new drugs is far behind the speed of the emergence of drug-resistant strains, resulting in delays in the development of new drugs, and once developed, it will not take long for the drug-resistant strains to appear again, resulting in many diseases that cannot be cured

[0013] ④ There is no medicine to cure the disease: because the residual dose of antibiotics is slowly accumulated in the human body, it is like training the resistance of various bacterial strains. There are many types of bacteria, and the new antibiotics developed must be broad-spectrum Yes, and because the strain is drug-resistant, the dose must be large to produce an effect, but "the drug is three-point poisonous", after a large dose, the toxicity is greater, and it is more difficult to obtain FDA approval. Therefore, it is possible Leading to the dilemma that there is no real cure for the disease in the future

Some antibiotics can also affect the immune effect of the vaccine, resulting in immune failure

Drugs such as kanamycin and furazolidone can inhibit the proliferation of B lymphocytes in pigs, interfere with the immune effect of the vaccine, and cause immune failure

[0018] ⑧Cause superinfection of animal organisms: while antibiotics kill pathogenic microorganisms (bacteria, viruses, actinomycetes, spirochetes, rickettsia, chlamydia, mycoplasma, etc.), they also inhibit and kill probiotics in the body. The killing effect will cause the flora imbalance in pigs, the ecological balance will be destroyed, and some conditional pathogens will multiply, causing double infection of the body, and producing drug-resistant strains, which will bring great benefits to the prevention and control of pig diseases. Trouble, with serious adverse consequences

[0026] Antibiotic additives have played a pivotal role in preventing and controlling diseases and improving feed conversion rate, but side effects such as emergence of drug-resistant strains and drug residues brought by antibiotics are increasing; trace elements such as manganese, zinc, copper and iron can affect enzyme activity and feed conversion rate , followed by excessive heavy metals in muscles and viscera, premature discontinuation or excessive restriction of trace elements, the average daily feed intake was higher than that of the control group, and the difference was significant. A result of increased demand, another major reason may be a decrease in feed efficiency as a result of nutritional imbalances

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