Abstract
ABSTRACT A growth study was conducted to quantify the dietary methionine requirement (in the absence of cystine) of the African catfish, Clarias gariepinus, using diets containing casein and gelatin as sources of intact protein, supplemented with crystalline amino acids. Amino acid test diets (400 g/kg crude protein; 3.0 kcal gross energy/g dry matter) with graded levels of methionine (20-40 g/kg protein) were formulated and fed to triplicate groups of African catfish (18.7 ±1.8 g) twice a day up to satiation for 70 days. Anorexia was observed after one week in catfish fed with diets containing 20-24 g methionine/kg protein. Dietary methionine requirement estimated using break point analysis was 32 g/kg dietary protein. No diet-related mortality or cataract were observed in catfish fed any of the diets.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
