Gonzales, J.M. (2012) Preliminary Evaluation on the Effects of Feeds on the Growth and Early Reproductive Performance of Zebrafish (Danio rerio). Journal of the American Association for Laboratory Animal Science : JAALAS. 51(4):412-417.
This study evaluated the effects of several commercially available feeds and different feeding regimes on the growth and early reproductive performance of zebrafish (Danio rerio). Juvenile zebrafish (n = 20; 5.06 ± 0.69 mg) were stocked into each of 24 tanks (volume, 2 L); 3 tanks were assigned to each of 8 feeding combinations for a period of 60 d. At the end of 60 d, 2 male and 2 female fish from each tank were pooled by dietary treatment (n = 6) and used to evaluate the effects of feeding combinations on early reproductive performance. Zebrafish fed dietary treatments 3 and 7 had significantly greater weight gain than zebrafish fed diet 5. Mean spawning success was significantly greater in zebrafish fed the control diet (Artemia only) than in those fed diet 1. Mean hatch rates were greater in zebrafish fed the control feed and diets 1, 2, 3, 5, and 6 than zebrafish fed diet 4. Additional results suggest that female zebrafish are sexually mature after 90 d post fertilization and that fertilization rates are the limiting factor in early reproduction.
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