Comparative study of zootechnical parameters between two species of salmonids; Oncorhynchus aguabonita and Oncorhynchus mykiss | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 45, Volume 25, Issue 4, July and August 2021, Page 741-751 PDF (625.99 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejabf.2021.194395 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| El Hassan Abba et al. | ||||
| Abstract | ||||
| The main objective of this study is to compare the zootechnical parameters of two species of rainbow trout; Oncorhynchus aguabonita (mutant trout) and Oncorhynchus mykiss (wild trout) subjected to the same ecological and dietary conditions during the fry phase. The results showed that the alevins of mutant trout have better growth performance compared to the alevins of wild trout. The average weight gain, average daily growth rate, and food conversion efficiency during the experimental period are 6.67 g, 0.071 g/d, and 0.76, respectively, compared to only 3.47 g, 0.036 g/d, and 0.86 for wild trout. The results obtained during the experimental period are encouraging to give greater importance to the mutant variety Oncorhynchus aguabonita, which will contribute to the increased demand for animal protein and essential fatty acid for cardiovascular diseases. | ||||
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