Periphyton technology enhances growth performance and delays prolific breeding of Nile Tilapia Oreochromis niloticus (Linnaeus 1758) Juveniles

Ogello Erick Ochieng, . and Muthoka Mavindu, . and Ouma Henry, . and Obiero Kevin, . Periphyton technology enhances growth performance and delays prolific breeding of Nile Tilapia Oreochromis niloticus (Linnaeus 1758) Juveniles. pp. 290-300. ISSN 2073-3720

This study evaluated the effect of periphyton technology (PPT) on the growth performance and breeding schedule of Oreochromis niloticus (Linnaeus 1758) juveniles. Six ponds each measuring 81 m were used for the study. The ponds were applied with agricultural lime at a rate of 4 g.m- and fertilised using chicken manure to facilitate primary productivity. The PPT ponds were fitted with two-metre-long eucalyptus poles of 5 cm diameter placed at 50 cm intervals with the regular addition of molasses as a carbon source. Tilapia juveniles were stocked at a density of 3 fish.m- in all ponds and fed on a commercial diet of 20 crude protein (CP) twice daily at 3 body weight. Fish were sampled weekly for growth and survival data and bi-weekly for fecundity estimates. The PPT-ponds registered significantly higher survival rate (97.50 0.35 ) mean weight (150.69 0.99 g) specific growth rate (SGR) (2.75 0.01) and feed conversion ratio (FCR) (1.29 0.01) than the control ponds which registered survival (91.15 0.88 ) mean weight (99.23 0.96 g) SGR (2.29 0.00) and FCR (1.58 0.01). There was significantly higher fecundity in the PPTponds (2.28 0.09 g.fish-) than control (1.74 0.06 g.fish-) with prolific spawning starting 4 weeks earlier in the control ponds than in the PPT-ponds. This study demonstrated the potential of PPT for enhancing tilapia growth while delaying prolific breeding behaviour. Further studies should explore PPT in replacing synthetic hormones for sexreversal of tilapia fry in hatcheries.

Full text available from: Official URL: https://www.asianfisheriessociety.org/publication/...

Abstract

This study evaluated the effect of periphyton technology (PPT) on the growth performance and breeding schedule of Oreochromis niloticus (Linnaeus 1758) juveniles. Six ponds each measuring 81 m were used for the study. The ponds were applied with agricultural lime at a rate of 4 g.m- and fertilised using chicken manure to facilitate primary productivity. The PPT ponds were fitted with two-metre-long eucalyptus poles of 5 cm diameter placed at 50 cm intervals with the regular addition of molasses as a carbon source. Tilapia juveniles were stocked at a density of 3 fish.m- in all ponds and fed on a commercial diet of 20 crude protein (CP) twice daily at 3 body weight. Fish were sampled weekly for growth and survival data and bi-weekly for fecundity estimates. The PPT-ponds registered significantly higher survival rate (97.50 0.35 ) mean weight (150.69 0.99 g) specific growth rate (SGR) (2.75 0.01) and feed conversion ratio (FCR) (1.29 0.01) than the control ponds which registered survival (91.15 0.88 ) mean weight (99.23 0.96 g) SGR (2.29 0.00) and FCR (1.58 0.01). There was significantly higher fecundity in the PPTponds (2.28 0.09 g.fish-) than control (1.74 0.06 g.fish-) with prolific spawning starting 4 weeks earlier in the control ponds than in the PPT-ponds. This study demonstrated the potential of PPT for enhancing tilapia growth while delaying prolific breeding behaviour. Further studies should explore PPT in replacing synthetic hormones for sexreversal of tilapia fry in hatcheries.

[error in script]

Item Type:	Article
AGROVOC Term:	Tilapia
AGROVOC Term:	Oreochromis niloticus
AGROVOC Term:	Periphyton
AGROVOC Term:	Growth
AGROVOC Term:	Animal breeding
AGROVOC Term:	Eutrophication
AGROVOC Term:	Aquatic communities
AGROVOC Term:	Reproductive control
AGROVOC Term:	Nutrient cycling in ecosystems
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/10290

Actions (login required)

View Item