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:: Volume 13, Issue 3 (7-2014) ::
IJFS 2014, 13 Back to browse issues page
Apparent digestibility coefficients and nutritional value of Iranian cottonseed meal varieties for rainbow trout (Oncorhynchus mykiss)
S. Dadgar , M. Mohd Salleh Kamarudin , F. Ehteshami *
, ehteshami@upm.edu.my
Abstract:   (3634 Views)
Three different varieties of cottonseed meal (CSM) were evaluated to measure the apparent digestibility coefficient (ADC) of the nutrients using chromic oxide (Cr2O3) as an indigestible marker. Five experimental diets were prepared and mixed with 1% of Cr2O3, 2% of mineral and vitamin each of which were premixed. Diet 1 was used as the control diet. Diets 2, 3, 4 and 5 were formulated using 70% of the control diet together with 30% of each ofthe cottonseed meal Pak (CSMP), cottonseed meal Sahel (CSMS), cottonseed meal Akra (CSMA), and soya bean meal (SBM), respectively, in three replications.The ADC of the three CSM varieties was measured to be 53.8-62.7%, 60.2-66.6% and 75.6-82.4% for dry matter, fat and crude protein, respectively. Survival rate for all fishes used in this study was more than 98%. Fishes fed with the CSM diets were not significantly different compared with those fed with the SBM diet in terms of survival rate (p>0.05). Apparent protein digestibility of CSMP and CSMS showed no significant difference with SBM (p>0.05). Therefore, it could be concluded that two kinds of CSM could be used as a replacement for SBM in rainbow trout as a protein source.
Keywords: Iranian Cottonseed meal varieties, Soybean meal, Apparent digestibility coefficients, Rainbow trout
Full-Text [PDF 214 kb]   (1119 Downloads)    
Type of Study: Orginal research papers | Subject: Biology & physiology
Received: 2015/01/17 | Accepted: 2015/01/17 | Published: 2015/01/17
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Dadgar S, Mohd Salleh Kamarudin M, Ehteshami F. Apparent digestibility coefficients and nutritional value of Iranian cottonseed meal varieties for rainbow trout (Oncorhynchus mykiss). IJFS. 2014; 13 (3) :522-529
URL: http://jifro.ir/article-1-1710-en.html

Volume 13, Issue 3 (7-2014) Back to browse issues page
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
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