Abstract
ABSTRACTTriplicate ponds (0.07‐ha) were stocked with either a single size group (11–12 cm) or mixed size groups (either smalls 7–8 cm, mediums 11–12 cm or larges 15–16 cm) of all‐male tilapia hybrids of female Tilapia nilotica x male T. hornorum. After 140 days, smalls, mediums and larges gained 1.89, 3.10 and 2.59 g/day in mixed stocking, respectively, while mediums in single stocking gained 2.59 g/day. In mixed stocking, growth of smalls was depressed due to competition with mediums, larges, or both. Larges apparently expended mre energy on nest building and guarding, thus allowing mediums to maximize their food intake and growth. Lack of a predetermined hierarchy under single stocking resulted in depressed growth.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call