Karadeniz alabalığı (Salmo trutta labrax) yeminde kanola ve aspir yağı kullanımının büyüme performansı ve yağ asidi kompozisyonu üzerine etkisi
[ X ]
Tarih
2017
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Sinop Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu çalışmada, Karadeniz alabalığı (Salmo trutta labrax) yeminde balık yağı yerine aspir yağı ve kanola yağı kullanımının büyüme performansı ve yağ asidi kompozisyonu üzerine etkisi incelenmiştir. Ortalama ağırlığı 30.22±0.19 g olan 525 adet Karadeniz alabalığının kullanıldığı çalışma 90 gün sürmüştür. Denemede, % 100 balık yağı (BY), % 100 aspir yağı (AY), % 100 kanola yağı (KY), % 50-50 balık yağı-aspir yağı (BY-AY), % 50-50 balık yağı-kanola yağı (BY-KY), % 50-50 aspir yağı-kanola yağı (AY-KY) ve balık-aspir-kanola yağı (BY-AY-KY) içeren 7 farklı yem kullanılmıştır. Deneme sonunda yapılan istatistiksel analiz sonuçlarına göre, spesifik büyüme oranı, oransal büyüme oranı, yem değerlendirme oranı, termal büyüme kat sayısı ve balık etindeki ham protein değeri bakımından gruplar arasında önemli fark olmadığı (p>0.05), ancak net protein verimliliği, viserosomatik indeks, hepatosomatik indeks ve balık etindeki ham yağ değeri bakımından önemli fark olduğu (p<0.05) tespit edilmiştir. Balık etindeki en yüksek linoleik asit miktarı AY grubunda (% 36.32±0.01), en yüksek linolenik (% 3.05±0.01) ve oleik asit miktarı (% 48.57±0.02) KY grubunda, en yüksek EPA (% 2.26±0.01), DHA (% 7.10±0.03) değerleri ise BY grubunda elde edilmiştir (p<0.05). Ayrıca en yüksek ΣSFA miktarı (% 23.51±0.04) BY-AY grubunda, en yüksek ΣMUFA miktarı (%52.83±0.06) KY grubunda, en yüksek ΣPUFA miktarı (% 41.82±0.03) AY grubunda, en yüksek Σomega-3 miktarı (% 11.39±0.08) BY grubunda, en yüksek Σomega-6 miktarı (% 38.48±0.03) ise AY grubunda tespit edilmiş ve gruplar arasındaki farklar istatistiksel açıdan önemli bulunmuştur (p<0.05). Sonuç olarak, Karadeniz alabalığı yeminde balık yağının tamamı ya da bir kısmı yerine aspir ve kanola yağı kullanımının büyüme performansı ve yem değerlendirme üzerine önemli bir etkisinin olmadığı, ancak yemlerdeki yağ asidi kompozisyonunun balık etine yansıyarak önemli değişikliklere neden olduğu tespit edilmiştir.
In this study, the effects of safflower and canola oils which were used instead of fish oil in Black Sea trout (Salmo trutta labrax) diets on growth performance and fatty acid composition were investigated. 525 Black Sea trouts were used with an average weight of 30.22 ± 0.19 g in this study which lasted 90 days. In this research, seven different diets containing 100% fish oil (BY), 100% safflower oil (AY), 100% canola oil (KY), 50-50% fish oil-safflower oil (BY-AY), 50-50% fish oil-canola oil (BY-KY), 50-50% safflower oil-canola oil (AY-KY) and fish oil-safflower oil- canola oil (BY-AY-KY) were used. According to the statistical results in the end of the experiment, there is no significant difference between groups in terms of specific growth rate, relative growth rate, feed conversion ratio, thermal growth coefficient and crude protein in fish meat (p˃0.05) but there is significant difference between groups in terms of net protein utilization, hepatosomatic index, viscerosomatic index and crude lipid in fish flesh (p˂0.05). In the fish flesh, the highest amount of linoleic acid was determined in group AY, the highest amounts of linolenic and oleic acids were found in group KY and the highest values of DHA and EPA acids were obtained in group BY. In addition, the highest amount of ƩSFA in group BY-AY, the highest amount of ƩMUFA in group KY, the highest amount of ƩPUFA in group AY, the highest amount of Ʃomega-3 in group BY and the highest amount of Ʃomega-6 in group AY were determined. As a result, it was determined that the use of safflower and canola oils instead of whole or part of fish oil in Blacksea trout feed had no significant effect on growth performance and feed evaluation but fatty acid composition in feeds caused significant changes in fish meat.
In this study, the effects of safflower and canola oils which were used instead of fish oil in Black Sea trout (Salmo trutta labrax) diets on growth performance and fatty acid composition were investigated. 525 Black Sea trouts were used with an average weight of 30.22 ± 0.19 g in this study which lasted 90 days. In this research, seven different diets containing 100% fish oil (BY), 100% safflower oil (AY), 100% canola oil (KY), 50-50% fish oil-safflower oil (BY-AY), 50-50% fish oil-canola oil (BY-KY), 50-50% safflower oil-canola oil (AY-KY) and fish oil-safflower oil- canola oil (BY-AY-KY) were used. According to the statistical results in the end of the experiment, there is no significant difference between groups in terms of specific growth rate, relative growth rate, feed conversion ratio, thermal growth coefficient and crude protein in fish meat (p˃0.05) but there is significant difference between groups in terms of net protein utilization, hepatosomatic index, viscerosomatic index and crude lipid in fish flesh (p˂0.05). In the fish flesh, the highest amount of linoleic acid was determined in group AY, the highest amounts of linolenic and oleic acids were found in group KY and the highest values of DHA and EPA acids were obtained in group BY. In addition, the highest amount of ƩSFA in group BY-AY, the highest amount of ƩMUFA in group KY, the highest amount of ƩPUFA in group AY, the highest amount of Ʃomega-3 in group BY and the highest amount of Ʃomega-6 in group AY were determined. As a result, it was determined that the use of safflower and canola oils instead of whole or part of fish oil in Blacksea trout feed had no significant effect on growth performance and feed evaluation but fatty acid composition in feeds caused significant changes in fish meat.
Açıklama
Anahtar Kelimeler
Su Ürünleri, Aquatic Products
