Starch type feed capable of increasing oestrus performance of replacement gilts

Abstract

The invention belongs to the technical field of feed, and specifically relates to feed capable of increasing oestrus performance of replacement gilts. The feed is prepared from the following raw materials: 65.5 percent of corn, 25.0 percent of bean pulp, 0.5 percent of barley husk, 5.0 percent of corn starch, 1.57 percent of calcium hydrogen phosphate, 1.05 percent of mountain flour, 0.12 percentof choline chloride, 0.40 percent of table salt, 0.03 percent of L-lysine hydrochloride, 0.50 percent of premix and 0.33 percent of zeolite powder. The feed disclosed by the invention is applied to astage from the weight of 60kg to primary oestrus of the replacement gilts; by adding specially-made premix, the primary oestrus day age of the replacement gilts can be remarkably ahead of time, and anoestrus rate of the replacement gilts can be increased.

Description

technical field [0001] The invention belongs to the technical field of feed, and more specifically relates to a feed capable of improving the estrus performance of gilts. Background technique [0002] Pig farming is an important part of my country's animal husbandry. At present, the productivity of sows in large-scale pig farms in my country is lower than that of foreign sows. In addition to being related to the nutrition and feeding management of sows during pregnancy and lactation, the sows in the replacement period Insufficient nutrition and feeding management are also important reasons. According to reports, the proportion of gilts in large-scale pig farms without estrus or delayed estrus is as high as 20% to 30%, which brings huge economic losses to pig production. The start of puberty in gilts means the beginning of the reproductive cycle of sows, and earlier puberty is conducive to improving the reproductive performance of producing sows. The puberty time of gilts in...

AI Technical Summary

Problems solved by technology

Studies have shown that high-energy diets can promote the secretion of serum luteinizing hormone (LH) and insulin-like growth factor Ⅰ (IGF-I) in gilts, and adding fat to diets can increase the concentration of estradiol (E2). Feeding pigs high-energy and fat-added diets is beneficial to promote the onset of puberty and estrus performance in gilts. At present, a certain amount of fiber is usually used in the feed of gilts in production, and dietary fiber is mainly fermented in the hindgut of pigs , in which hemicellulose and cellulose are degraded into volatile fatty acids. Adding fiber can promote the development of the gastrointestinal tract of gilts and improve the reproductive performance of sows. However, if the diet contains high fiber, the energy and dry matter The apparent digestibility will be significantly reduced, and it will affect the absorption of fatty acids by pigs and affect the secretion of hormones

There are still few reports on the effects of different dietary energy structures on the growth and reproductive performance of gilts

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