作者: F. Farrag , F. Khalil , A. Mehrim , M. Refaey
DOI: 10.21608/JAPPMU.2013.71343
关键词: Fish farming 、 Animal science 、 Fishery 、 Carica 、 Nile tilapia 、 Oreochromis 、 Feed conversion ratio 、 Body weight 、 Carcass composition 、 Biology
摘要: The objective of the present study was to determine effects dietary inclusion different levels pawpaw seeds powder (PSP) at periods on growth performance, survival rate, feed utilization and carcass composition fry fingerlings Nile tilapia ( Oreochromis niloticus ). experiment divided into two periods; first feeding period with PSP for 71 days; and, second rearing where fed control diet (0 g/kg from PSP) 84 days. Apparently-healthy 1200 one day old an average initial body weight 0.012 g/fry were randomly distributed 20 treatments. Each treatment referred three aquaria. added basal 0, 2, 4, 6 8 15, 30, 45 60 days, periods. results showed no significant (P � 0.05) differences in all performance parameters conversion ratio (FCR) during (15, day); however, 0.01) improvement (intervals SR final SR) (FI FCR) by increasing level till g PSP/ kg diet, then significantly decrease / diet. In case period, gradually improved until day, decreased (60 day). interaction between indicated that PSP/kg had best values FW, TWG ADG compared other Thus, this lead useful safety recommended use /kg be economic efficient fish farms.