Availability of essential amino acids,nutrient utilisation and growth in juvenile black tiger shrimp,Penaeus monodon,following fishmeal replacement by plant protein |
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| Authors: | Lenaïg Richard Anne Surget Vincent Rigolet Sadasivam J Kaushik Inge Geurden |
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| Institution: | 1. College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China;2. College of Life Science, Northeast Agricultural University, Harbin 150030, PR China;3. College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China;4. Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, PR China;1. CENAIM-ESPOL, Escuela Superior Politécnica del Litoral (ESPOL), Campus Gustavo Galindo, Km. 30.5 Vía perimetral, Casilla 09-01-5863, Guayaquil, Ecuador;2. Biodiversity and Aquaculture Group, Institute of Animal Science and Technology, Universitat Politècnica de Valencia, Camino de Vera s/n, 46071 Valencia, Spain;1. ICAR-Central Institute of Brackishwater Aquaculture, 75, Santhome High Road, RA Puram, Chennai, Tamil Nadu 600028, India;2. Fish Health and Safety Laboratory, Jeddah Fisheries Research Center, Post Box-9621, North Obhur, Jeddah 21423, Saudi Arabia |
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| Abstract: | Two trials with juvenile black tiger shrimp (Penaeus monodon) were undertaken to study the effects of replacing fishmeal by different levels of plant proteins on growth performances and nutrient utilisation of shrimp in semi-intensive conditions (Expt. 1) and on the availability of dietary nitrogen (N) and amino acids (Expt. 2). Five isoproteic diets (on crude protein basis) were formulated to contain 34, 24, 16, 8, or 0% fishmeal, with fishmeal being replaced by a mixture of plant protein (corn gluten meal, wheat gluten, and rapeseed meal). In Expt. 1, the shrimp (initial body weight, IBW 1.5 ± 0.1 g) were reared in earthen ponds for 144 days and fed one of the experimental diets. Apparent digestibility of nutrients and AA were assessed in Expt. 2, using 150 L tanks and shrimp of 12.8 ± 0.4 g IBW. After 144 days in grow-out ponds, shrimp fed the diet with 24% of fishmeal had similar growth as those fed the control diet containing 34% fishmeal (0% replacement). When 50% or more of the fishmeal were replaced, weight gain as well as N and energy gains significantly decreased. Digestibility of dry matter, protein and energy was also significantly lower in all fishmeal-replaced diets. In particular, leucine digestibility decreased by 26% at 100% replacement, which was significantly correlated to an increased incorporation of corn gluten meal. Our data confirm the need to improve our knowledge on AA availability and raw material quality in order to improve fishmeal replacement in P. monodon diets. |
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