Effect of different sex ratios on the reproductive capacity on Nile tilapia (Oreochromis niloticus) breeders readers in Hapa-In-Pond [manuscript]
| dc.contributor.author | Janessa R. Talania | |
| dc.date.accessioned | 2025-10-07T07:43:24Z | |
| dc.date.available | 2025-10-07T07:43:24Z | |
| dc.date.issued | 2018 | |
| dc.description.abstract | Fish farmers in the grow-out sector often face low fry production that could result to low profit and lack of sufficient knowledge on the best practice of brood stock production in hap-in-pond. The objective of the study was to determine the effect of using different sex ratios (male: female) on the reproductive capacity of Nile tilapia. The study had three treatments which were replicated thrice, namely: T1 (1:1), T2 (1:2) and T3 (1:3). Hapa-in-pond was used in conditioning the fish. The study revealed that the tilapia fry production in T3 (1M:3F) had a highest survival rate, spawning rate, total number of fry produced, average fry produced, average number of fry produced/g body weight of breeders compared to other treatments. Despite these differences, analysis of variance of the three treatments did not show any significant differences (P>0.05). The low production of fry can be attributed to unsuccessful spawning and possibly attributed to the stage of maturity of the female breeders chosen during the pairing stage. Furthermore, the males were larger than the female that may have caused aggression behavior. This study recommends to investigate the timing of collection of eggs and fry in order to monitor the spawning success, hatchability and survival rate of fry of at fish different sex ratios. | |
| dc.identifier.uri | http://granarium.clsu.edu.ph/handle/123456789/682 | |
| dc.language.iso | en | |
| dc.relation.supervisor | RAVELINA R. VELASCO | |
| dc.title | Effect of different sex ratios on the reproductive capacity on Nile tilapia (Oreochromis niloticus) breeders readers in Hapa-In-Pond [manuscript] | |
| dc.type | Thesis |