Reproductive performance of female Nile tilapia ( Oreochromis niloticus ) fed diets with different digestible energy levels

Revista Brasileira de Zootecnia (Print)

Costa, Adriano Carvalho¹  Allaman, Ivan Bezerra²  Oliveira, Marinez Moraes de³  Paulino, Renan Rosa³  Rosa, Priscila Vieira³  Orlando, Tamira Maria³ 

[1] Instituto Federal Goiano, Rio Verde, Brazil;Universidade Estadual de Santa Cruz, Ilhéus, Brazil;Universidade Federal de Lavras, Lavras, Brazil

关键词: body composition;    fecundity;    fish;    nutrition;    reproduction.;   

DOI  :  10.1590/s1806-92902017000100001

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

This study aimed to evaluate the reproductive performance of female Nile tilapia (Oreochromis niloticus) fed diets containing different levels of digestible energy (DE). The fish were housed in 15 fiberglass tanks (500 L) in a recirculating system at an average temperature of 27.5 °C. The treatments consisted of five diets with increasing levels of DE (3,200; 3,400; 3,600; 3,800; and 4,000 kcal/kg). The levels of DE did not significantly influence the final weight or the hepatosomatic, gonadosomatic, and visceral fat indices. The absolute fecundity was influenced by the treatments, for which the highest values were observed from the 3,600 kcal/kg DE level and upward. The proximate composition of the fish also had a significant effect on the variables crude protein, ether extract, and ash; the fish fed diets with higher levels of DE exhibited the lowest body protein content, while the accumulation of ether extract exhibited the opposite response. A level of 3,600 kcal/kg of digestible energy should be used in diets with 380 g/kg crude protein and a starch/lipid ratio of 1.33 for female Nile tilapia.

【 授权许可】

Unknown