Research progress on nutritional factors affecting birth weight and uniformity of piglets
The birth weight and uniformity of piglets are key indicators affecting the survival rate in the farrowing house,and the survival rate in the farrowing house is one of the important indicators to measure the production performance of modern breeding enterprises.With the continuous breakthroughs in genetic breeding technology,the number of piglets born per litter and the number of weaned piglets have shown a trend of increasing year by year.However,this progress is also accompanied by a decrease in the birth weight and uniformity of piglets.The decrease in birth weight and uniformity is closely related to the survival and subsequent growth and development of piglets.The factors currently affecting the birth weight and uniformity of piglets mainly include the number of piglets born per litter,breed,nutritional factors,the position of the embryo in the uterus,parity,season,etc.The article reviews the impact of nutritional factors such as feed intake,protein,functional fiber,and functional amino acids on the birth weight and uniformity of piglets and their possible regulatory mechanisms,and provides reasonable recommended values,with the aim of improving the birth weight and uniformity of piglets through nutritional regulation,to provide a reference for the optimization design of feed formulations.
国家科技期刊平台
NSTL
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