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Effects of alternative changes of dietary protein source on growth protein efficiency, digestibility and amino acid profile in Bluga (Huso huso)
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Zeinab Najafi *   , Hosein Ouraji , Sakine Yegane , Ayoub Farhady |
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Abstract: (86 Views) |
Studies on nutrient utilization and growth performance of Bluga (Huso huso) raised on five feeding schedules (treatment 1 continuously fed plant protein diet, treatment 2 continuously fed fish meal diet, treatment 3 alternate feeding of a 1-day plant protein diet; followed by a 1-day fish meal diet, treatment 4 plant protein diet in the morning fallowed by fish meal diet in the afternoon and treatment 5 fish meal diet in the morning followed by plant protein diet in the afternoon) in 3 replication (20 fish in each repetition) under laboratory conditions showed that continuous feeding with Fish meal diet (treatment 2) resulted in maximum growth, which was not significantly different from treatments 4 and 5 (p> 0/05). While feeding with plant protein diet (treatment 1) and feeding every other day (treatment 3) led to a decrease in fish growth performance (P<0.05). In terms of protein digestibility, the best treatments were 2, 4 and 5, which did not show any significant difference with other treatments (P<0.05). The highest amount of muscle arginine belonged to treatments 2, 4 and 5, which was significantly higher than muscle arginine of fish fed with treatments 1 and 3 (P<0.05). Also, the highest amount of glycine was observed in treatment 5, which was not significantly different from other treatments except treatment 1. No significant difference was observed in the amounts of other muscle amino acids of the experimental treatments (p> 0/05). The obtained results showed that the alternating change of the dietary protein source during one day (morning and evening and vice versa) does not have any negative effect on the growth performance and feed efficiency, and in most of the nutritional factors, it is equal to the treatment fed with fish meal. |
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| Keywords: Bluga, growth performance, mixed feeding schedule, protein |
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Full-Text [PDF 407 kb]
(36 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2023/06/2 | Accepted: 2023/07/18 | Published: 2024/09/22
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