动物营养学报2011，Vol.23Issue(11)：1970-1975,6.DOI:10.3969/j.issn.1006-267x.2011.11.018
N-氨甲酰谷氨酸对环江香猪生长性能、营养物质消化率及血浆游离氨基酸含量的影响
N-Carbamylglutamate Affects Growth Performance, Nutrient Digestibility and Plasma Concentrations of Free Amino Acids in Huanjiang Mini-Pigs
摘要
Abstract
This study was conducted to determine effects of N-carbamylglutamate (NCG) on growth performance, nutrient digestibility and plasma free amino acid concentrations in growing pigs. Ten Huanjiang mini-pigs with an average body weight (BW) of (12. 6 ± 1. 7) kg were used and randomly assigned into two groups (five replicates with one pig per replicate) , representing supplementation with 0 or 0. 1% NCG in a basal diet for 10 days. Daily feed intake, initial and final BW were recorded, respectively; fecal samples were collected from day 8 to 10 for determining the digestibility of routine nutrients by TiO2 indicator; blood samples were collected on day 10 for analyzing biochemical parameters and concentrations of free amino acids (AA) , respectively. Results showed that compared with the basal diet group, 0.1% NCG supplementation significantly increased the average daily gain (P <0. 05), and decreased the ratio of gain to feed (P <0. 05). The apparent digestibility of crude protein, crude fat and dry matter were increased (P >0. 05). Plasma alkaline phosphatase activity was significantly increased (P <0. 05), while the plasma concentrations of urea nitrogen, ammonia and low-density lipoprotein were significantly decreased (P <0. 05). The plasma concentrations of total amino acid, essential amino acid, aromatic amino acid, phenylalanine and methionine of pigs fed the diet supplemented with 0.1% NCG were higher than those of pigs fed the basal diet (P < 0. 05). These findings suggest that 0.1% NCG supplementation can promote the digestibility of nutrients, improve AA balance, and then increase the growth performance, which may provide some scientific information for the application of NCG in diets of Huanjiang mini-pigs.关键词
N-氨甲酰谷氨酸/环江香猪/生长性能/消化率/氨基酸Key words
N-carbamylglutamate/ Huanjiang mini-pigs/ growth performance/ digestibility/ amino acids分类
农业科技引用本文复制引用
周笑犁,印遇龙,孔祥峰,汤文杰,何庆华..N-氨甲酰谷氨酸对环江香猪生长性能、营养物质消化率及血浆游离氨基酸含量的影响[J].动物营养学报,2011,23(11):1970-1975,6.基金项目
国家星火计划项目(2007EA790004) （2007EA790004）
国家自然科学基金项目(30901040 （）
30928018) （）
