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Effect of different dietary protein levels on some growth indices and production power of Narrow Claw Crayfish
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Reza Changizi   , Zahra Ghiyasvand , Seyed Mehdi Hosseini Fard |
| Islamic Azad University. Babol, Iran |
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Abstract: (5291 Views) |
| Three practical diets containing increasing percentages of crude protein (CP) (30%, 35%, and 40%) were fed to juvenile narrow claw crayfish (mean individual weight=15±2.3 g) during 8-week feeding trial. Growth, feed conversion ratio and body composition of tail-muscle meat of juvenile narrow claw were determined. The percent weight gain of narrow claw fed a diet containing 30% crude protein was higher (14.28%) than that of narrow claw fed a diet containing 35% crude protein (14.24%) and 40% crude protein (12.81%). Narrow claw fed Diet 3 had higher FCR (10.56) compared to narrow claw fed the other two diets. Results from this study indicate that juvenile narrow claw can be fed a practical diet containing 30% CP. Reducing CP levels in Iranian narrow claw diets may help reduce operating costs and thereby increase producer’s profits. |
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| Keywords: Narrow claw crayfish, Astacus leptodacthylus, Protein level, Diet, Body composition |
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Full-Text [PDF 1371 kb]
(2272 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2014/02/6 | Accepted: 2014/02/6 | Published: 2014/02/6
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