Nutritional evaluation of phosphorylated pumpkin s

Authors: Naglezi de Menezes Lovatto Fernanda Rodrigues Goulart Silvandro Tonetto de Freitas Patricia Inês Mombach Bruno Bianch Loureiro Ana Betine Beutinger Bender Aline Augusti Boligon João Radünz Neto Leila Picolli da Silva

Publish Date: 2015/09/16

Volume: 41, Issue: 6, Pages: 1557-1567

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Abstract

An 8week feeding trial was conducted to evaluate the effect of replacing fish meal with pumpkin seed meal PSM or phosphorylated protein concentrate of pumpkin seed meal PPCPS on growth and metabolic responses of silver catfish Five isonitrogenous and isocaloric diets were formulated Control diet contained fish meal as the main protein source The treatment groups contained 25 and 50  of either PSM or PPCPS protein replaced the fishmeal protein A total of 400 silver catfish with initial mean weight of 24 ± 046 g were distributed into 20 tanks For data four orthogonal contrasts were applied control diet versus PSM diets control diets versus PPCPS diets control versus other diets PSM diets versus PPCPS diets The results indicated that the fish fed PSM diets had lower weight gain when compared to either control diet or PPCPS The PPCPS do not affect growth and protein efficiency ratio Lower albumin contents were found for the control diet fish for the contrasts control diet versus PPCPS diet and control diet versus other diets The hepatic ALAT enzyme activity was higher in the fish fed the control diet P  005 The hepatic ALP was most active in fish that received the PPCPS diets when comparing control diet versus PPCPS diets and control diet versus other diets The hepatosomatic index was higher for fish fed the PPCPS Our results indicated that PPCPS presents relevant nutritional quality for fish and can replace the fish meal protein up to 50  without affecting growth PER and intermediate metabolites in silver catfishThe authors would like to thank Conselho Nacional de Desenvolvimento Científico e Tecnológico CNPq—National Counsel of Technological and Scientific Development for the research yield scholarship Leila Picolli da Silva Coordenação de Aperfeiçoamento de Pessoal de Nível Superior CAPES—Coordination of Improvement of Higher Education for the Doctoral degree scholarship Naglezi de Menezes Lovatto and Ritter Alimentos company for donating the pumpkin seeds

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