Effects of Fish Meal Replacement by Pet Grate Poultry By-Product Meal on Growth Performance, Intestinal Digestive Enzyme Activities and Serum Biochemical Indexes of Rice Filed Eel (Monopterus albus)
CAO Xiaoli, ZHONG Lei, DAI Zhenyan, HU Yajun, CHEN Kaijian, HU Yi
Hunan Engineering Research Center for Utilization of Characteristics of Aquatic Resources, Hunan Agricultural University, Changsha 410128, China
Abstract：A 10-week feeding trial was conducted to evaluate the effects of replacing fish meal (FM) with pet grade poultry by-product meal (P-PBM) on growth performance, intestinal digestive enzyme activities and serum biochemical indexes of rice filed eels (Monopterus albus). In this experiment, five isonitrogenous and isoenergetic diets were formulated by replacing 0 (P-PBM0 group, as control group), 15% (P-PBM15 group), 30% (P-PBM30 group), 45% (P-PBM45 group) and 60% (P-PBM60 group) fish meal with pet grade poultry by-product meal in a basal diet, respectively. A total of 900 rice filed eel with an initial average body weight of (26.67±0.05) g were randomly allocated into 5 groups with 3 replicates per group and 60 fish per replicate. The results showed as follows:with the replacement ratio of fish meal by pet grade poultry by-product meal increasing, the weight gain rate showed a decrease trend, and the feed conversion rate showed an increase trend. The weight gain rate of rice field eel in the P-PBM45 and P-PBM60 groups was significantly lower than that in the control group (P<0.05), and the feed conversion rate of rice field eel in the P-PBM60 group was significantly higher than that in the control group (P<0.05). Compared with the control group, the body composition of rice field eel in the replacement groups had no significant difference (P>0.05), but the intestinal lipase activity of rice field eel in the replacement groups was significantly decreased (P<0.05). When the replacement ratio exceeded 45%, the contents of serum high-density lipoprotein, low-density lipoprotein, urea nitrogen, complement 3, complement 4, as well as the activities of serum glutamic oxalacetic transaminase and glutamic-pyruvic transaminase were significantly increased compared with the control group (P<0.05). The serum albumin and triglyceride contents in the P-PBM60 group were significantly higher than those in the control group (P<0.05). To sum up, under the condition of this experiment, pet grade poultry by-product meal replaced less than 45% fish meal has no negative effect on the growth performance and physiological function of rice filed eel.
曹晓莉, 钟蕾, 戴振炎, 胡亚军, 陈开健, 胡毅. 宠物级鸡肉粉替代鱼粉对黄鳝生长性能、肠道消化酶活性及血清生化指标的影响[J]. 动物营养学报, 2020, 32(5): 2352-2360.
CAO Xiaoli, ZHONG Lei, DAI Zhenyan, HU Yajun, CHEN Kaijian, HU Yi. Effects of Fish Meal Replacement by Pet Grate Poultry By-Product Meal on Growth Performance, Intestinal Digestive Enzyme Activities and Serum Biochemical Indexes of Rice Filed Eel (Monopterus albus). Chinese Journal of Animal Nutrition, 2020, 32(5): 2352-2360.
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