Piglet feed additive for preventing diarrhea and preparation method thereof

Abstract

The invention relates to a piglet feed additive for preventing diarrhea, belonging to the technical field of animal nutriology. The piglet feed additive for preventing diarrhea is a substance with the molecular weight section between 100 Da and 1000 Da, which is separated from fermentation products of coarse fodder. The content of lignin in the coarse fodder is less than 10%. The preparation method of the piglet feed additive for preventing diarrhea comprises the following steps of: selecting the coarse fodder with the lignin less than 10% to carry out anaerobic fermentation; filtering fermented products; separating filtrate by a molecular sieve; eliminating macromolecule substances in the filtrate with the molecular sieve which can block the substance with molecular weight of 1,000 Da; then filtering the macromolecule substances by the molecular sieve which can block substances with the molecular weight of 100 Da; and finally taking the retained substances. The heterologous homomorphic feed additive is added to piglet transition feed and nursing feed to replace parts of effects of antibiotics, wherein the amount of the heterologous homomorphic feed additive is about 0.3 percent of the piglet transition feed and the nursing feed. The piglet feed additive can efficiently reduce diarrhea phenomena of weaned piglets and nursery piglets, obviously reduce the morbidity and the death rate of digestive tract diseases, and respectively reduce the diarrhea rate of the weaned piglets and the diarrhea rate of the nursery piglets by 42.3% and 77.3% according to the relative values.

Description

technical field [0001] The invention belongs to the technical field of animal nutrition, and relates to a feed additive for piglets with natural microorganism source and anti-diarrhea effect, and also relates to a preparation method of the feed additive. Background technique [0002] In conventional farming, piglets are weaned at approximately 8 weeks of age. With the continuous improvement of the feeding level, most pig farms in my country have gradually adopted the feeding system of early weaning, generally weaning at the age of 3-5 weeks. In some countries with developed pig farming industry, pig farms have begun to promote 14-day-old ultra-early weaning technology. However, early weaning of piglets will also bring a series of adverse effects on the growth and development of piglets, causing physiological dysfunction of piglets, prone to pathological phenomena such as diarrhea and edema, among which diarrhea is the most common, and mild diarrhea can lead to malnutrition...

AI Technical Summary

Problems solved by technology

However, the practice of intensive farming in the past half a century has proved that animals cannot maintain real health by relying on medicines alone, let alone produce natural and healthy animal products.

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