The effects of feeding level and stocking density on the growth and feed efficiency of himri barbel fry, Barbus luteus (Heckel, 1843) Yemleme seviyesi ve stoklama yoǧunluǧunun sarıbenli balıǧı, Barbus luteus, yavrularının gelişimi ve yem deǧerlendirmesi üzerine etkileri

Gökçek K., Tepe Y.

Turkish Journal of Veterinary and Animal Sciences, cilt.33, sa.1, ss.21-25, 2009 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 33 Sayı: 1
  • Basım Tarihi: 2009
  • Dergi Adı: Turkish Journal of Veterinary and Animal Sciences
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.21-25
  • Anahtar Kelimeler: Feed conversion, Feeding levels, Growth performance, Himri barbel, Stocking density, Survival rate
  • Hatay Mustafa Kemal Üniversitesi Adresli: Evet

Özet

Two stocking densities (20 and 40 fry/80-l tank) with 4 feeding rates (2.5%, 5.0%, 7.5%, and 10.0% body weight/day) were used to determine the optimum feeding level for himri barbel fry during a 60-day culture period. Water quality parameters (temperature, dissolved oxygen, pH, and total ammonia nitrogen) were monitored during the experiment. Final body weight and specific growth rate (SGR) was significantly lower with the 2.5% feeding rate than with the others, at both stocking densities; however, no significant differences were observed between the other feeding rates and between stocking densities. The best feed conversion ratio (FCR) of 1.37 was achieved with the 2.5% feeding rate and stocking density of 40 fry/80 l; yet, in terms of total yield and survival the optimal FCR of 1.50 was obtained with the 5.0% feeding rate and 40 fry/80 l. At the 10.0% feeding rate survival rates were significantly lower. Both feeding ratio and stocking density also affected water quality parameters. © TÜBİTAK.