期刊
JOURNAL OF ANIMAL SCIENCE AND BIOTECHNOLOGY
卷 9, 期 -, 页码 -出版社
BMC
DOI: 10.1186/s40104-018-0276-7
关键词
Amino acid; Crude protein; Growth performance; Gut health; Net energy; Nutrient balance; Pig
资金
- Beijing Swine Innovation Team of Modern Agriculture Industry Technological System
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of China Agricultural University
Recent years have witnessed the great advantages of reducing dietary crude protein (CP) with free amino acids (AA) supplementation for sustainable swine industry, including saving protein ingredients, reducing nitrogen excretion, feed costs and the risk of gut disorders without impairing growth performance compared to traditional diets. However, a tendency toward increased fatness is a matter of concern when pigs are fed low-protein (LP) diets. In response, the use of the net energy system and balanced AA for formulation of LP diets has been proposed as a solution. Moreover, the extent to which dietary CP can be reduced is complicated. Meanwhile, the requirements for the first five limiting AA (lysine, threonine, sulfur-containing AA, tryptophan, and valine) that growing-finishing pigs fed LP diets were higher than pigs fed traditional diets, because the need for nitrogen for endogenous synthesis of non-essential AA to support protein synthesis may be increased when dietary CP is lowered. Overall, to address these concerns and give a better understanding of this nutritional strategy, this paper reviews recent advances in the study of LP diets for swine and provides some insights into future research directions.
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