keywords: Clarias gariepinus, masculinization, carcass quality, catfish
Carcass proximate and amino acid composition of lyophilized bull and goat testes meal masculinized Clarias gariepinus was evaluated. Artificially bred Clarias gariepinus were masculinized, masculinization was carried out through feeding the fry with Lyophilized Bull Testes Meal (LBTM), Lyophilized Goat Testes Meal (LGTM) and commercial fish feed supplemented with Methyl Testosterone Hormone (MTH) as standard control for a period of four (4) weeks, at post juvenile stage, fish were fed commercial diet for five months. After five month of feeding, fish were anesthetized, gutted, freeze-dried and pulverized. Processed fish samples were stored in polythene bags for proximate and amino acid profile analyses. Proximate and amino acid composition of fish samples were determined following the standard methods of Association of Official Analytical Chemist (AOAC). Proximate and amino acid values of differently treated fish were subjected to one way Analysis of Variance (ANOVA) and Duncan Multiple Range Test (DMRT) was used to separate mean were significant. LBTM masculinized fish had the highest muscle tissue crude protein and amino acid composition while non-masculinized fish (control group) had the lowest crude protein and amino acid composition, in conclusion masculinization increased carcass quality with respect to carcass crude protein and essential amino acids.
Ajiboye OO Yakubu AF Simpa JO & Balogun SA 2016. Effect of Garlic-Supplemented Diets on Growth Response, Survival,Nutrient Utilization and Body Composition of Monosex Tilapia zillii, World J. of Fish & Marine Sci., 8(2): 115-122. Al-ablani SA & Phelps RP 2002. Paradoxes in exogenous androgen treatments of bluegill. J. App. Ichth., 18: 61-64. Atanda AN 2012. Fish species Diversification in Aquaculture for the success of the Agriculture Transformation Agenda: The role of Tilapia Production. In: Fisheries Society of Nigeria (FISON) Annual Public Lecture Abuja. ALEP 2005. Inventory of feed producers in Nigeria. Published by Aquaculture and Inland Fisheries Project. Annex 1 of the National Special Programme for Food Security with the Agricultural Development Programme in all states and FCT Abuja, Nigeria. Pp1-8. Al-ablani SA & Phelps RP 2002. Paradoxes in exogenous androgen treatment of bluegill. J. App. Ichth., 18: 61-64. AOAC 2000. Official Methods of Analysis of Association of Official Analytical Chemists, 17th Edition, A.O.A.C., Washington. DC, 21: 498-447. Campbell MG 2009. The Nine Essential Amino Acids pp1-6, http://campbellmgold.com Odin RY & Bolivar RB 2011. Masculinization of the Nile Tilapia (Oreochromis niloticus) using Lyophilized Testes from Caraboa (Bubalus bubalis carabanensis L.), Bull (Bos indicus L.) and Boar (Sus domesticus L.). Unpublished result of Aquafish Collaborative Research Support Programme. Freshwater Aquaculture Centre, Central Luzan state University Science City of Munoz, Nueva Ecija, Philiphines, p. 87. Offem OB Gabriel UI & Ezekiel AO 2009. Effect of stocking size of the predatory African Catfish (Heterobronchus longifilis V.). On the growth performance of Nile Tilapia (Oreochromis niloticus T.). In Pond Culture. Int. J. Fisheries and Aqua, 1(3): 34-38. Phelps RP 2006. Chapter 6: Hormone Manipulations of sex. Pp211-252 In: C.E. Lim and C.D Webster (eds). Tilapia: Biology. Culture, and Nutrition. New York. The Haworth Press, Inc. p678. Phelps RP & Popma TJ 2000. Sex reversal of tilapia. In: B.A Costa-Peirce and J. E. Rakocy (eds). Tilapia Aquaculture in Americas. The World Aquaculture Society, Bato Rouge, Louisiana, United States, 2: 34-59. Turan F 2005. Effect of Natural (Adrosteredione and Red Clover) and Synthetic Hormones on sex reversal, Gonadal Development and Growth Performance of the African Catfish Clarias gariepinus (Burchell, 1822) An unpublished Ph.D. Theses institute of Natural Sciences, Mustafa Kemal Univ. Hetay. In: Turan, F. and Cek, S. (2007). Masculinization of the African catfish (Clarias gariepinus) Treated with Gokshura (Tribolium terrestris). Mustafa University, Hatey. Turan F & Cek S 2007. Masculinization of the African Catfish (Clarias gariepinus) Treated with Gokshura (Tribulus teristris). The Israeli J. Aqua, 59(4): 224-229. Robyt JF & White BJ 1990. Biochemical Techniques Theory and Practice. Waveland: Prospect Heights. Viveiros ATM Eding EH & Komen J 2001. Effect of 17-alpha-Methyl testosterone on seminal vesicle development and some release response in the African catfish (Clarias gariepinus). Journal of Rep., 122: 817-827.