动物营养学报2017，Vol.29Issue(12)：4372-4385,14.DOI:10.3969/j.issn.1006-267x.2017.12.018
80%赖氨酸硫酸盐与98%赖氨酸盐酸盐对生长中期草鱼生长性能、消化吸收能力和消化器官生长发育影响的比较研究
A Comparative Study: Effects of 80% L-lysine· H2SO4 and 98% L-lysine· HCl on Growth Performance, Digestion and Absorption Capacities and Growth Development of Digestive Organs of Young Grass Carp ( Ctenopharyngodon idella)
摘要
Abstract
This study aimed to compare the effects of 80% L-lysine· H2SO4 (80-lysine) and 98% L-lysine· HCl ( 98-lysine) on growth performance, digestion and absorption capacities and growth development of diges-tive organs of young grass carp ( Ctenopharyngodon idella) , to explore the biological values of 98-lysine and 98-lysine, and to determine the optimum dietary lysine content using 80-lysine as the supplemental form of ly-sine.A total of 540 grass carp with an initial body weight about 275.80 g were randomly divided into 6 groups with 3 replicates each and 30 fish per replicate.Fish in 6 groups were fed adding 80-lysine diets containing 0.8% ( basal diet) , 1.0% , 1.2% , 1.4% and 1.6% lysine and adding 98-lysine diet containing 1.2% lysine for 60 d, respectively.The results showed as follows:compared with the basal diet, dietary lysine content reached 1.2% by adding suitable level of 80-lysine could significantly increase the weight gain rate ( WGR) , specific growth rate ( SGR) , feed intake ( FI) , the activities of lipase, amylase in total intestine, the activities of glu-tamic oxalacetic transaminase ( GOT) and glutamate pyruvate transaminase ( GPT) in hepatopancreas, the ac-tivities of alkaline phosphatase ( AKP) and creatine kinase ( CK) in proximal intestine ( PI), mid intestine ( MI) and distal intestine ( DI) , hepatosomatic index ( HSI) , intestosomatic index ( ISI) and the fold height of PI and DI ( P<0.05) , and significantly decrease the activities of GOT and GPT in serum ( P<0.05); the effects of 80-lysine on these parameters were better than 98-lysine (P<0.05).Moreover, compared with the basal diet, dietary lysine content reached 1.2% by adding suitable level of 80-lysine could significantly increase the feed efficiency ( FE ) , total intestine trypsin activity, the activities of Na+, K+-ATPase and γ-glutamyl-transferase (γ-GT) in PI, MI and DI, intestinal length, relative gut length ( RGL) and fold height in MI ( P<0.05); however, compared with 98-lysine, no significant effects of 80-lysine were observed on these parame-ters ( P>0.05) .In conclusion, 80-lysine is more effective than 98-lysine for improving growth, and digestion and absorption capacities of young grass carp.Using 80-lysine as the supplemental form of lysine, the optimum dietary lysine content for young grass carp ( 276 to 667 g) base on SGR and FE is 1.31% ( 4.68% of dietary protein) and 1.27% ( 4.54% of dietary protein) , respectively.关键词
80%赖氨酸硫酸盐/98%赖氨酸盐酸盐/草鱼/生长性能/消化吸收能力Key words
80% L-lysine· H2SO4/98% L-lysine· HCl/grass carp ( Ctenopharyngodon idella)/growth performance/digestion and absorption capacities分类
农业科技引用本文复制引用
胡凯,苏玥宁,冯琳,刘扬,姜维丹,吴培,姜俊,周小秋..80%赖氨酸硫酸盐与98%赖氨酸盐酸盐对生长中期草鱼生长性能、消化吸收能力和消化器官生长发育影响的比较研究[J].动物营养学报,2017,29(12):4372-4385,14.基金项目
四川省重大科技成果转化示范( 2015CC0011) （ 2015CC0011）
四川省青年创新团队( 2017TD0002) （ 2017TD0002）
