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Effects of dietary butyric and propionic acids on growth parameters and gut microflora in Sobaity seabream juveniles )Sparidentex hasta)
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Shapour Mehrjooyan   , Saeed Ziaei-nejad1 , Mansour Torfi Mozanzadeh , Laleh Mousavi Dehmourdi |
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Abstract: (494 Views) |
| An eight-week study was conducted to examine the effects of dietary butyric and propionic supplementation levels on growth and gut microflora in juveniles’ sobaity seabream (Sparidentex hasta). In this regard, a basal diet (44% crude protein and 15% lipid) was supplemented with various levels of butyric (BA) and propionic acids (PA) to design seven experimental feeds as follow: 1-control (diet without organic acid supplementation), 2- BA 0.5%, 3- BA 1%, 4- PA 0.5%, 5- PA 1%, 6- BA+PA 0.5% (0.25% BA+0.25% PA supplementation), 7- BA+PA 1% (0.5% BA+0.5% PA supplementation). Three hundred and fifteen fish with initial weight of 28.5±0.5 g were distributed among 21 polyethilene tanks (300 L). The fish were fed with the experimental diets three times a day up to visual satiation making sure that no feed remain at the bottom of the tanks. Water temperature and salinity were 31.3 °C and 46 g/L, respectively. The fish fed with 0.5 and 1% PA or 0.5% blends of BA and PA had higher growth rate than other groups. Also, the improvement of food conversion ratio was observed in the treatment fed with 0.5% PA and 1% BA treatments. Total bacterial count in the gut did not affect by the experimental feeds but lactic acid bacteria count increased with supplementing acidifiers in diet. Based on the findings of this study, 0.5% PA or blends of PA and BA at 0.5% level are recommended for improving growth and gut health condition in juveniles’ sobaity seabream. |
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| Keywords: Organic acids, Sobaity seabream, Nutrition, lactic acid bacteria, Feed conversion ratio |
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Full-Text [PDF 701 kb]
(199 Downloads)
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Type of Study: Research |
Subject:
تغذيه
Received: 2024/01/23 | Accepted: 2024/04/29 | Published: 2024/06/18
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