Juvenile tench ( <i>Tinca tinca</i> L.) response to practical diets with different replacement levels of fish meal by pea protein concentrate supplemented with methionine

نویسندگان

چکیده

The effects of methionine supplementation in diets with different replacement levels fish meal (FM) by pea protein concentrate (PPC) on survival, growth performance and body composition juvenile tench (0.39 g initial weight) were studied a 90-day experiment. Six practical (50% crude protein) differing level FM PPC tested: 0% (control diet), 35%,45%, 60%, 75% or 85%, corresponding to 0, 285, 366, 487, 608 685.4 kg−1 diet respectively. To provide the same amount as control diet, was included from 45% substitution level. Survival rates high, between 93.7% 100%, without differences among treatments. Juveniles fed 85% showed lower (p < 0.05) weight specific rate, which cannot be attributed deficiency. In all treatments, percentages externally visible deformities low (under 0.1%). increase content resulted significant reduction lipid whole-body juvenile. Minimum requirements for could estimated 10 over this would not necessary. Juvenile exhibited high tolerance dietary content, up 487 kg−1, affecting performance, make possible consider vegetal source suitable substitute FM.

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ژورنال

عنوان ژورنال: Aquaculture Research

سال: 2021

ISSN: ['1355-557X', '1365-2109']

DOI: https://doi.org/10.1111/are.15394