Feed for improving production performance of weaned suckling pigs and preparation method of feed

Abstract

The invention provides a preparation method of a feed for improving the production performance of weaned suckling pigs. The preparation method comprises the following steps: (1) pretreating preparation raw materials; and (2) uniformly stirring the pretreated materials, then carrying out thermal refining at the temperature of 65-70 DEG C, and feeding the quenched and tempered materials into a granulation system. The granulation system comprises a ring die, the ring die is provided with a channel for extrusion forming of the materials, the channel comprises a first runner, a second runner and a third runner, the hole diameters of the first runner, the second runner and the third runner are sequentially increased, the length of the first runner is larger than that of the second runner, and the materials are extruded and formed through the first flow channel, the second flow channel and the third flow channel in sequence to obtain the granular feed. By adopting the method disclosed by the invention, the crispy pellet feed can be prepared, so that the palatability of animals, the digestion and utilization rate of nutrient substances and the diarrhea rate of weaned suckling pigs are improved, and the growth speed of the animals and the product competitiveness are improved. The invention also provides the feed for improving the production performance of the weaned suckling pigs, which is prepared by the method.

Description

technical field [0001] The invention relates to the technical field of pig feed, in particular to a feed for improving the production performance of weaned suckling pigs and a preparation method thereof. Background technique [0002] Piglets will face three major challenges after weaning and leaving the mother, namely, the stress caused by the change of the physical environment of the house, the stress between the groups after the house is mixed, and the stress after the food is changed from liquid to solid feed. Under the stress of turning pens, mixing groups and changing food forms, they are prone to loose stools, insufficient feed intake, and fat loss. Among them, the change of food form after weaning of suckling pigs will be the most serious challenge, mainly because the nutritional composition and physical form of liquid breast milk and solid feed have changed greatly, and the way of feeding has also changed, from sucking and swallowing to chewing and swallowing . The...

AI Technical Summary

Problems solved by technology

This sudden change of food form can easily lead to insufficient feeding of suckling pigs. When the supply of breast milk stops, the structure and function of the digestive tract of suckling pigs will change within a few hours. The villi of the small intestine will become shorter and the crypts will become deeper. The activity of digestive enzymes such as lactase and sucrase in the intestine decreases, the absorption capacity of the small intestine decreases, and the development of digestive enzymes such as protease and amylase is immature

The absorption efficiency of the small intestine to the nutrients of the new creep feed decreases, especially when the raw material combination and processing of the creep feed are inappropriate, it will usually cause the proliferation of enterotoxin pathogenic microorganisms (mainly Escherichia coli), and it is easy to Diarrhea, accompanied by persistent underfeeding and fat loss during weaning

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