Evaluation of cooked and mechanically defatted sesame (sesamum indicum) seed meal as a replacer for soybean meal in the diet of African catfish (Clarias gariepinus)

Clarias gariepinus diyetindeki soya küspesi yerine pişirilmiş ve mekanik olarak yağı uzaklaştırılmış susam tohumu küspesi ikame edilmesinin etkisini belirlemek için 56 günlük bir yemleme denemesi yürütülmüştür. Tüm diyetler, izonitrojenik, (%40 ham protein), isolipidik (%12 lipid) ve izoenerjik (18 Mj/g) olacak şekilde hazırlanmıştır. Soya küspesinin %0, 25, 50, 75, 100’i pişirilen ve mekanik olarak yağı ayrılan susam tohumu küspesi ile ikame edilmiştir. Susam tohumu küspesi içeren diyetlerin performansı, %40 ham protein içerikli soya küspesi içeren kontrol diyeti ile kıyaslanmıştır. Her muamele tank başına ortalama başlangıç ağırlığı 6,37±0,21g olan 15 adet yayın balığı ile 3 tekkerrürlü olarak yürütülmüştür. Protein verim değerinde, yem alımında, spesifik büyüme oranında, % ağırlık artışında ve ham protein birikiminde %25 susam içeren (SSM25) balık yemi ile beslenen balıklar ile kontrol diyeti ile beslenen balıklar arasında önemli bir fark (P>0,05) görülmemiştir. Benzer olarak, protein verim değerinde, yem alımında, spesifik büyüme oranında, % ağırlık artışında ve ham protein birikiminde %25 susam içeren balık yemi ile beslenen balıklar ile %50 susam içeren balık yemi (SSM50) ile beslenen balıklar arasında önemli bir fark (P>0,05) görülmemiştir. Buna rağmen, kontrol diyetiyle beslenen balıklar ile diğer deneme diyetleriyle beslenen balıklar arasında yukarıdaki indisler bakımından önemli farklılıklar (P

Anahtar Kelimeler:

Clarias gariepinus, büyüme performansı, vücut komposizyonu, susam, balık beslenmesi, Sesamum indicum, soya küspesi

Afrika yayın balığı (Clarias gariepinus) diyetinde pişmiş ve mekanik olarak yağı uzaklaştırılmış susam (sesamum indicum) tohumu küspesinin soya küspesinin ikamesi olarak değerlendirilmesi

A 56-day feeding trial was conducted to assess the replacement value of cooked and mechanically defatted sesame seed meal as dietary replacement of soybean meal in diets of Clarias gariepinus. All diets were prepared to be isonitrogenous, (40% crude protein), isolipidic (12% lipid) and isoenergetic (18 Mj/g). Cooked and mechanically defatted sesame seed meals were used to replace soybean meal at a rate of 0, 25, 50, 75, 100% respectively. The performance of the fish fed sesame seed meal-based test diets was compared to fish fed a soybean meal-based control diets containing 40% crude protein. Each treatment had three replicates using 15 catfish fingerlings per tank with mean initial body weight of 6.37±0.21 g. There was no significant difference (P>0.05) in protein productive value, feed intake; specific growth rate, % weight gain and crude deposition between fish fed control diets and fish fed diets containing 25% sesame. Similarly there was no significant difference (P>0.05) in protein productive value, feed intake; specific growth rate, % weight gain and crude deposition between fish fed fish fed diets containing 25% sesame and fish fed diets containing 50% sesame. However, a significant difference (P<0.05) was recorded between fish fed control diets and fish fed other test diets using the above indices. Comparable performance in growth nutrient utilization and carcass crude protein deposition in Clarias gariepinus fed diets with SSM25 and SSM50 showed that these meals could be viable means of improving the cost of fish feeding.

Keywords:

Clarias gariepinus, growth performance, body composition, sesame, fish feeding, Sesamum indicum, soyabean oilmeal,

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