动物营养学报2018，Vol.30Issue(2)：797-806,10.DOI:10.3969/j.issn.1006-267x.2018.02.046
家禽副产物酶解肽对凡纳滨对虾生长性能、消化指标和非特异性免疫指标的影响
Effects of Peptides Hydrolyzed from Poultry By-Products on Growth Performance, Digestive Indices and Non-Specific Immune Indices of Litopenaeus vannamei
摘要
Abstract
In this study,we evaluated the growth performance,digestive indices and non-specific immune indices of Litopenaeus vannamei to study the feasibility of peptides hydrolyzed from poultry by-products (PHFP) as a protein source for partial replacement of fish meal (FM) in the diet of Litopenaeus vannamei.Five experimental diets were prepared to replace 0 (control),2％,4％,6％ and 8％ FM of basal diet by premixed PHFP (adding coated methionine in the PHFP to reach methionine content in line with domestic FM),respectively.A total of 900 Litopenaeus vannamei with the average body weight of (0.31±0.01) g were randomly divided into 5 groups with 3 replicates per group and 60 shrimps per replicate.The indoor feeding experiment lasted for 6 weeks.The results showed as follows:PHFP could replace 2％ to 6％ of FM without causing a significant reduction in the weight gain rate,specific growth rate,protein efficiency ratio and feed conversion ratio of shrimps (P＞0.05).Compared with the control group,the crude fat content of whole body was significantly decreased (P＜0.05) and the ash content of whole body was significantly increased (P＜0.05) when the replacement level of FM with PHFP was over 2％.When the replacement level of FM with PHFP was 2％,the lipase (LPS) activity in hepatopancreas was highest among the groups,while the contents of glucose (GLU) and triglycerides (TG) in plasma were significantly decreased (P＜0.05) and the activity of lysozyme (LZM) in plasma was significantly increased compared with control group (P＜0.05).When the replacement level of FM with PHFP was over 2％,the peroxidase (POD) activity in plasma was significantly decreased compared with control group (P＜0.05).There were no significant differences in the apparent digestibility of crude protein and crude fat,the activity of LZM,POD and total antioxidant capacity (T-AOC) in hepatopancreas (P＞0.05).It follows that in this experiment condition,based on the growth performance and took into account digestive indices and non-specific immune indices,optimal replacement level of FM with PHFP in the diet for Litopenaeus vannamei is 2％.关键词
家禽副产物酶解肽/凡纳滨对虾/生长性能/消化指标/非特异性免疫指标Key words
PHFP/Litopenaeus vannamei/growth performance/digestive indices/non-specific immune indices分类
农业科技引用本文复制引用
路晶晶,郭冉,夏辉,解伟,王美雪,杨品贤,李娜..家禽副产物酶解肽对凡纳滨对虾生长性能、消化指标和非特异性免疫指标的影响[J].动物营养学报,2018,30(2):797-806,10.基金项目
河北农业大学人才振兴学科计划 （）
