Evaluation of Post-Larval Diets for Indoor Weaned Largemouth Bass (<i>Micropterus salmoides</i>)
Jovanka Lukić,
Gergő Gyalog,
Zoltán Horváth,
Anita Annamária Szűcs,
Tijana Ristović,
Amarela Terzić-Vidojević,
Zsuzsanna J. Sándor,
Uroš Ljubobratović
Affiliations
Jovanka Lukić
Laboratory for Molecular Microbiology (LMM), Institute of Molecular Genetics and Genetic Engineering (IMGGE), University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
Gergő Gyalog
Research Centre for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences (MATE HAKI), Anna-Liget Str. 35, H-5540 Szarvas, Hungary
Zoltán Horváth
H&H Carpió Halászati Kft., Kossuth u. 7, H-7814 Ocsard, Hungary
Anita Annamária Szűcs
Research Centre for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences (MATE HAKI), Anna-Liget Str. 35, H-5540 Szarvas, Hungary
Tijana Ristović
Research Centre for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences (MATE HAKI), Anna-Liget Str. 35, H-5540 Szarvas, Hungary
Amarela Terzić-Vidojević
Laboratory for Molecular Microbiology (LMM), Institute of Molecular Genetics and Genetic Engineering (IMGGE), University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia
Zsuzsanna J. Sándor
Research Centre for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences (MATE HAKI), Anna-Liget Str. 35, H-5540 Szarvas, Hungary
Uroš Ljubobratović
Research Centre for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences (MATE HAKI), Anna-Liget Str. 35, H-5540 Szarvas, Hungary
This study aimed to evaluate different commercial diets (Otohime C1, Aller Futura (AF), Biomar Inicio Plus (BIP)) and one experimental feed (EF) in terms of their effectiveness as post-larval diets for indoor weaned largemouth bass, LMB (Micropterus salmoides). Key variations in the content of nutritive values were monounsaturated fatty acid (MUFA) and highly unsaturated FA (HUFA) ω3. Fish were fed with one of four tested diets from the 33rd to the 40th day post-hatch (DPH). Biometric indices, digestive enzyme-specific activities, thyroid hormone status, and mRNA expression of genes coding for skeleton, neuron, and muscle growth were analyzed. The lowest skeletal deformity rate and highest survival among the treatments were seen in BIP-fed fish. Dietary lipids, with an appropriate balance between MUFA and polyunsaturated FA (PUFA), alongside amino acid balance, were shown to be the main contributors to the growth of the skeleton and/or fish survival. On the other hand, fish growth is correlated with fish digestive capacity and feed moisture percent rather than feed quality. Unexpectedly, BIP-fed fish were attributed with the lowest expression of skeleton differentiation markers, which may reflect the sacrifice of scale and/or cranium growth at the expense of somatic growth. This study highlights the role of non-marine ingredients in the nutrition of post-larval LMB.
