Effect of dietary protein level on growth performance and nitrogen excretion of the juvenile convict cichlid, Amatitlania nigrofasciata
Yazarlar (5)
Prof. Dr. Nejdet Gultepe Kastamonu Üniversitesi, Türkiye
Doç. Dr. Umit Acar Muğla Sıtkı Koçman Üniversitesi, Türkiye
Prof. Dr. Osman Sabri KESBİÇ Kastamonu Üniversitesi, Türkiye
Doç. Dr. Kutalmış GÖKKUŞ Kastamonu Üniversitesi, Türkiye
Prof. Dr. Seyit Aydin Kastamonu Üniversitesi, Türkiye
Makale Türü Özgün Makale (SCOPUS dergilerinde yayınlanan tam makale)
Dergi Adı Journal of Animal and Veterinary Advances
Dergi ISSN 1680-5593
Makale Dili İngilizce Basım Tarihi 01-2014
Cilt / Sayı / Sayfa 13 / 6 / 390–394 DOI 10.5555/20143186678
Makale Linki http://www.scopus.com/inward/record.url?eid=2-s2.0-84899700723&partnerID=MN8TOARS
UAK Araştırma Alanları
Mühendislik
Özet
A 8 weeks growth trial was conducted to determine the effects of dietary protein on the growth of the convict cichlid Amatitlania nigrofasciata and on water quality in closed recirculating systems. Four test diets were formulated to contain protein levels ranging 30-45%. The fish averaging 0.47±0.07 g were reared in 10 L aquarium. Fish were fed ad libitum at 08:30, 12:30 and 16:30 for 8 weeks. A second-order polynomial regression between dietary protein levels and weight gain in each group, demonstrated that the most suitable protein level for maximum growth was determined to be 40.8%. The feed conversion ratios of fish ranged from 1.78-2.78 in the experimental groups. Results showed significant differences in SGR and WG. Dietary protein level significantly influenced ammonia excretion, fish fed 45% protein excreted higher concentrations of ammonia-nitrogen than fish fed 30-40% dietary protein. For …
Anahtar Kelimeler
Amatitlania nigrofasciata | Ammonia excretion | Growth | Ornamental fish | Protein requirements