Effect of Various Levels of Dietary Protein on Bioenergetics’ Parameters of Snow Trout (Shizothorax zarudnyi) Juveniles
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Rahimeh Khammar , Ahmad Gharae , Mostafa Ghaffari , Abdolali Rahdari |
, agharaei551@gmail.com |
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Abstract: (9725 Views) |
The study investigates the effect of dietary proteins on growth of Snow trout juveniles (Shizothorax zarudnyi) fingerlings. Triplicate groups of fish (average weight±SD, 13.44±1.97g) were fed for eight weeks four isolipid and isoenergetic experimental diets (7.57±0.35% crude lipid, 3.18±0.14 kcal.g-1 dry matter, respectively) containing 25, 30, 35 or 40% crude proteins. The results showed growth rate of fish fed with 25% protein diet was higher than that of fish fed with 30, 35 and 40% protein diets, but differences were not significant (P>0.05). Proximate analysis indicated that the lipid, protein and ash components of whole body were affected by the diets (P<0.05), whereas the moisture content of whole body was unaffected by the increase in dietary protein content (P>0.05). The study showed that a dietary protein level of 25 % was optimal for the species for proper growth and feed conversion. |
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Keywords: Nutrition, Feed conversion ratio, Protein dietary, Snow trout (Shizothorax zarudnyi). |
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Full-Text [PDF 140 kb]
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Type of Study: Research/ Original/ Regular Article |
Subject:
Marine Biology Received: 2015/09/26 | Revised: 2015/10/28 | Accepted: 2015/09/26 | ePublished: 2015/09/26
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