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Optimum dietary methionine requirement of juvenile silver pompano, Trachinotus blochii (Lacepede, 1801)
Animal Feed Science and Technology ( IF 3.2 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.anifeedsci.2020.114592
Sanal Ebeneezar , P. Vijayagopal , P.P. Srivastava , Subodh Gupta , Tincy Varghese , D. Linga Prabu , S. Chandrasekar , Eldho Varghese , C.S. Tejpal , Anikuttan K.K. , P. Sayooj , Livi Wilson

Abstract In this study, we optimized the dietary methionine requirement of juvenile silver pompano (average initial weight of 5.47 g). Six isonitrogenous and isolipidic diets (420 g/kg crude protein [CP] and 60 g/kg lipid) were formulated with different concentrations of methionine (5.1, 6.9, 9.0, 10.7, 13.1, and 15.2 g/kg dry diet) and a constant level of cysteine (5.3 g/kg). Fishes were randomly stocked in a recirculatory system for a feeding trial of 90 days. After the feeding trial, significant differences (P 0.05) were observed among hepatosomatic index, viscerosomatic index, muscle ratio, condition factor, serum glucose, triglycerides, and erythrocyte count. The optimization of the fitted quadratic regression for WG, SGR, TGC, FCR, and PER based on the dietary methionine level showed that the optimum methionine requirement of silver pompano in nursery phase ranged from 11.6–11.8 g/kg dry diet (27.6–28.1 g/kg dietary CP), corresponding to a dietary cysteine level of 5.3 g/kg.

中文翻译:

幼年银鲳鱼的最佳膳食蛋氨酸需求量,Trachinotus blochii (Lacepede, 1801)

摘要 在本研究中,我们优化了鲳鲳幼鱼(平均初始体重 5.47 g)的日粮蛋氨酸需求量。用不同浓度的蛋氨酸(5.1、6.9、9.0、10.7、13.1 和 15.2 g/kg 干日粮)配制六种异氮和等脂日粮(420 g/kg 粗蛋白 [CP] 和 60 g/kg 脂质)和恒定水平的半胱氨酸 (5.3 g/kg)。将鱼随机放养在循环系统中进行 90 天的饲养试验。喂养试验后,肝体指数、内脏指数、肌肉比例、状况因素、血糖、甘油三酯和红细胞计数之间存在显着差异(P<0.05)。WG、SGR、TGC、FCR的拟合二次回归优化,
更新日期:2020-10-01
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