The effect of different first feeds on proteolytic activity of the northern Pike, Esox lucius linneaus 1758, post- larvae
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Tarih
2014
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info:eu-repo/semantics/openAccess
Özet
Turna, Esox lucius , balığı post-larvaları besin keselerinin tüken mesi takiben ilk on günlük dönemde alabalık mikro diet yemi, Artemia nauplii ve plankton ile beslenmiş ve post-larvaların proteolitik aktivitesi ölçülmüştür. Çalışmanın sonucunda, farklı tip besinlerin proteolitik aktivite üzerinde istatistiki açıdan önemli bir etkisinin olduğu tespit edilmiştir (P<0,05). Proteaz aktivitesinde ölçülen en yüksek değerler Artemia (228 ,22±15 ,44 U/mg ) ve plankton (302 ,78±45 ,85 U/mg ) gruplarında 2. günde , mikro diyet (202 ,05 ± 19, 79 U/mg ) grubunda ise 3. günde elde edilmiştir. Bu noktadan sonra, tüm gruplardaki proteaz aktivitesi düşmeye başlamıştır. Daha sonra, proteaz aktivitesinin 8. günde Artemia ve plankton gruplarında, 9. günde ise mikro diyet grubunda bariz bir şekilde arttığı belirlenmiştir. Diğer besinlerle karşılaştırıldığında, turna balığı post- larvalarını plankton ile beslemenin proteolitik aktivite üzerine daha olumlu etki yaptığı gözlenmiştir.
The Northern Pike, Esox lucius , post-larvae were fed with trout micro diet, Artemia nauplii and plankton at the first ten days after yolk - sac absorption and the proteolytic activity of the post-larvae were measured. According to the results, the proteolytic activity was significantly affected by the different type of first feed (P<0.05). The highest protease activities were obtained on 2 nd day in Artemia (228.22±15.44 U/mg ) and plankton (302.78±45.85 U/mg ) groups, and on 3 rd day in micro diet (202.05±19.79 U/mg ) group. After this point, the enzymatic activity started to decrease in all groups. Thereafter, the conspicuous increase in protease activities of larvae was determined on the day 8 th in Artemia and plankton group, but on the day 9 th in micro diet group (P<0.05). In contrast to other feeding groups, it is observed that feeding pike post-larvae with plankton caused more positive effect on proteolytic activity than the other groups.
The Northern Pike, Esox lucius , post-larvae were fed with trout micro diet, Artemia nauplii and plankton at the first ten days after yolk - sac absorption and the proteolytic activity of the post-larvae were measured. According to the results, the proteolytic activity was significantly affected by the different type of first feed (P<0.05). The highest protease activities were obtained on 2 nd day in Artemia (228.22±15.44 U/mg ) and plankton (302.78±45.85 U/mg ) groups, and on 3 rd day in micro diet (202.05±19.79 U/mg ) group. After this point, the enzymatic activity started to decrease in all groups. Thereafter, the conspicuous increase in protease activities of larvae was determined on the day 8 th in Artemia and plankton group, but on the day 9 th in micro diet group (P<0.05). In contrast to other feeding groups, it is observed that feeding pike post-larvae with plankton caused more positive effect on proteolytic activity than the other groups.
Açıklama
Anahtar Kelimeler
Zooloji, Balıkçılık
Kaynak
Turkish Journal of Fisheries and Aquatic Sciences
WoS Q Değeri
Scopus Q Değeri
Cilt
14
Sayı
4
