Effects of soy protein base diet supplemented with lysine and methionine on digestive enzymes activity and hematological parameters in silvery-black porgy (Sparidentex hasta) juveniles
Visualitza/Obre
Autor/a
Yaghoubi, M.
Torfi Mozanzadeh, M.
Ghafleh Marammazi, J.
Omid Safari, O.
Gisbert, E.
Data de publicació
2019-03-06ISSN
1562-2916
Resum
The effect of dietary partial replacement of fish meal (FM) by soybean protein (SP) alone or in combination with lysine (Lys) and methionine (Met) supplementation were tested in a 60-days feeding trial for silvery-black porgy (Sparidentex hasta) juveniles. Seven isoproteic (ca. 50% crude protein) and isoenergetic (ca. 22.4 MJ/kg) diets were formulated in which 45% (SP45), 60% (SP60) and 75% (SP75) of FM protein were replaced by SP and the control diet (FM) was prepared with FM as the major source of protein. In SP45+, SP60+ and SP75+ diets, 45 to 75% of FM was replaced by SP with supplementing blends of Lys and Met (98% of purity). The activities of the trypsin, lipase and α-amylase were higher in fish fed SP diets with crystalline amino acids supplementation than in the other groups (P < 0.05). Fish fed SP75 and SP75+ diets had the lowest red blood cell count and hematocrit level (P < 0.05). The results of the current study indicated that anti-nutritional factors in a soy-protein based diet rather than lysine and methionine deficiencies may have adverse effects on digestive enzymes activities and health condition in silvery-black porgy juveniles.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
Anglès
Matèries (CDU)
639 - Caça. Pesca. Piscicultura
Pàgines
13
Publicat per
Iranian Fisheries Research Organization
Publicat a
Iranian Journal of Fisheries Sciences
Citació
Yaghoubi, Morteza, Mansour Torfi Mozanzadeh, Jasem Ghafle Marammazi, Omid Safari, Enric Gisbert. 2019. "Effects Of Soy Protein Base Diet Supplemented With Lysine And Methionine On Digestive Enzymes Activity And Hematological Parameters In Silvery-Black Porgy (Sparidentex Hasta) Juveniles". Iranian Journal of Fisheries Sciences 18 (4): 968-980. Iranian Fisheries Research Organization. doi:10.22092/ijfs.2019.118592.
Programa
Aqüicultura
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