The effect of two chemo-attractants and different first feeds on the growth performances of african catfish (Carias gariepinus, Burchell, 1822) at different larval stages
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Tarih
2005
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Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu çalışmada 4 günlük karabalık (Clarias gariepinus) larvaları bir hafta boyunca alabalık başlangıç yemi, kıyılmış sığır karaciğeri ve tatlı su midyesi, kuru tubifeks, DL-alanin ve betain katkılı alabalık başlangıç yemi, artemia nauplii ve kaynamış yumurta sarısı, kıyılmış midye eti ve kuru tubifeksten oluşan karma bir yemle beslenmiştir. Birinci aşamanın sonunda, DL-alanin ve betain ilavesinin larvaların büyüme ve yaşama oranlarında iyileştirme sağlamadığı gözlenmiştir. Çalışmanın ikinci aşamasında ise 10 günlük karabalık larvaları 30 gün boyunca alabalık toz yemi, artemia ve alabalık yemi, sadece alanin, sadece betain ve hem alanin hem de betain katkılı alabalık yemi ile beslenmiştir. Birinci aşamanın aksine, alanin ve betain ilavesi büyüme ve yaşama oranlarını arttırmıştır. Bu sonuçlar DL-alanin ve betainin erken larval dönemde herhangi bir etkiye sahip olmamasına rağmen, bu maddelerin post-larval dönemde oldukça etkili olduğunu göstermektedir.
In this study, 4 days old African catfish larvae were fed with trout starter diet, minced beef liver and fresh water mussel, dried tubifex, DL-alanine and betaine supplemented trout starter, artemia nauplii and a combined diet consisting of boiled chicken egg yolk, minced mussel and dried tubifex as the first feed after yolk absorption for a week. At the end of the first period, it was observed that DL-alanine and betaine supplementation did not improve the larval growth and survival compared to other feeds. In the second stage of this study, ten days old larvae of Clarias gariepinus were fed with trout starter, artemia and trout starter, only DL- alanine, only betaine and both DL- alanine and betaine supplemented trout starter diets for 30 days. In contrast to first stage, DL-alanine and betaine supplementation improved the growth and survival rates. These results showed that DL-alanine and betaine did not have any attracting role in the pre-larval stage; however, in the post-larval stage, they had a very strong effect on the survival and growth rate of the African catfish, Clarias gariepinus.
In this study, 4 days old African catfish larvae were fed with trout starter diet, minced beef liver and fresh water mussel, dried tubifex, DL-alanine and betaine supplemented trout starter, artemia nauplii and a combined diet consisting of boiled chicken egg yolk, minced mussel and dried tubifex as the first feed after yolk absorption for a week. At the end of the first period, it was observed that DL-alanine and betaine supplementation did not improve the larval growth and survival compared to other feeds. In the second stage of this study, ten days old larvae of Clarias gariepinus were fed with trout starter, artemia and trout starter, only DL- alanine, only betaine and both DL- alanine and betaine supplemented trout starter diets for 30 days. In contrast to first stage, DL-alanine and betaine supplementation improved the growth and survival rates. These results showed that DL-alanine and betaine did not have any attracting role in the pre-larval stage; however, in the post-larval stage, they had a very strong effect on the survival and growth rate of the African catfish, Clarias gariepinus.
Açıklama
Anahtar Kelimeler
Ziraat, Sütçülük ve Hayvan Bilimleri
Kaynak
Turkish Journal of Veterinary and Animal Sciences
WoS Q Değeri
Scopus Q Değeri
Cilt
29
Sayı
2
