Nutritional feed additive capable of improving litter size of replacement gilt

Abstract

The invention discloses a nutritional feed additive capable of improving litter size of a replacement gilt. The additive comprises the following components in parts by weight: 5-25 parts of vitamin D3, 5-25 parts of beta-carotene, 10-30 parts of vitamin E and 5-10 parts of organic selenium. The nutritional feed additive disclosed by the invention can immediately start puberty of the replacement gilt and improve the estrus rate and conception rate of the replacement gilt, so as to improve the survival litter size, thereby finally lowering the cost for the breeding pig farm and improving the productivity effect.

Description

technical field [0001] The invention relates to a technical method, in particular to a nutritional feed additive capable of increasing the litter size of gilts. Background technique [0002] In recent years, gilts have focused on the genetic selection of growth rate and lean meat rate, coupled with their own physiological development characteristics, compared with multiparous sows, their reproductive performance is generally low, especially the litter size, which restricts sows For the development of life-long reproductive performance, the current market mainly uses artificial injection of hormones to promote estrus and mating of gilts, and long-term injection of hormones will produce dependence and affect the metabolism of normal hormones in the body, thereby affecting the number of ovulations of sows and oviposit sows The quality of cells will ultimately affect the reproductive performance of gilts and even their lifetime reproductive performance. For how to improve puber...

AI Technical Summary

Problems solved by technology

[0002] In recent years, gilts have focused on the genetic selection of growth rate and lean meat rate, coupled with their own physiological development characteristics, compared with multiparous sows, their reproductive performance is generally low, especially the litter size, which restricts sows For the development of life-long reproductive performance, the current market mainly uses artificial injection of hormones to promote estrus and mating of gilts, and long-term injection of hormones will produce depe...