MÜGE ALİYE HEKİMOĞLU, Cüneyt SÜZER, ŞAHİN SAKA, MUAMMER KÜRŞAT FIRAT

Enzymatic characteristics and growth parameters of ornamental Koi carp (Cyprinus carpio var. Koi) larvae fed by artemia nauplii and cysts

Bu çalışmanın amacı, Artemia nauplii (AN) ve dekapsüle Artemia kist (ADC) ile beslenen Koi (Cyprinus carpio var. Koi) larvalarının sindirim enzimlerindeki değişimleri ve larval gelişimleri ortaya koymaktır. Bu kapsamda, 27 gün süren ve 3 tekrarlı yapılan çalışmada gruplar arasındaki ağırlık ve boy gelişimi, spesifik büyüme ile hayatta kalma oranları ve sindirim enzimlerinden total proteaz, lipaz, amilaz ve kitinaz aktiviteleri incelenmiştir. Çalışmada AN ile beslenen grupta total boy, canlı ağırlık ve SGR değerleri sırası ile 20,56±3,23 mm, 0,9±0,05 g ve 2,03% d−1 tespit edilmiş olup, ADC ile beslenen grupta ise bu değerler 28,16±4,81 mm, 0,28±0,16 g ve 6,02 d−1 olarak saptanmıştır (P0,05). Ayrıca her iki grubun enzim aktiviteleri incelendiğinde total proteaz, lipaz, amilaz ve kitinaz spesifik aktiviteleri farklı bulunmuştur (P

Artemia nauplii ve kisti ile beslenen koi (Cyprinus carpio var. koi) larvalarında enzimatik özellikler ve büyüme parametrelerinin incelenmesi

The purpose of this study was to compare the larval growth and digestive enzyme activities of koi carp (Cyprinus carpio var. Koi) larvae fed on Artemia nauplii (AN) and decapsulated cyst (ADC). The experiment was carried out in triplicate and lasted 27 days. Specific growth and survival rates, specific activities of total protease, lipase, amylase and chitinase were examined in experimental groups. At the end of the experiment for group fed with AN total length, weight and SGR were 20.56±3.23 mm, 0.9±0.05 g and 2.03 % d −1, respectively and for group fed with ADC it was 28.16±4.81 mm, 0.28±0.16 g and 6.02 d−1 (P<0.05). However, survival rates in the group fed on ADC was 98.88% while in the group fed on AN was 97.77% (P>0.05). Besides, there were significant differences on specific enzyme activities (total protease, amylase, chitinase, lipase) (P<0.05). Obtained results suggested that koi larvae fed by ADC presented relatively higher growth parameters.

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