978-620-2-67771-4

Comparison of Growth and Heterosis of Hybrids of Black-Chinned tilapia

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Summary:

The current study evaluated growth performance, survival rate, feed conversion ratio, heterosis, heritability, responses to selection and breeding values of four populations of Sarotherodon melanotheron from Fosu Lagoon, Brimsu, Baifikrom and Weija reservoirs in 4 × 4 diallel crosses aimed at producing a hybrid with high growth, reproductive and survival traits to enhance aquaculture production. Triplicates of a single-pair mating design for the diallel crosses yielded 3,840 fingerlings. These were tagged and stocked communally in both freshwater (cages) and brackish water (tanks) for 120 days using a randomized complete block design. The results indicated that five hybrids (Baifikrom × Fosu (RF), Fosu × Weija (FW), Brimsu × Weija (BW), Baifikrom × Brimsu (RB) and Brimsu × Baifikrom (BR)) were significantly (P ˂ 0.05) heavier in harvest body weight compared to their parental stocks and other hybrids. Overall mean heterosis estimates indicated that seven (7) out of the twelve hybrids exhibited positive heterosis ranging from 0.17 ± 1.95 to 22.17 ± 5.52 %. Moderate to high heritability ranging from 0.29 ± 0.05 to 0.63 ± 0.21 were observed for the hybrids.

Author:

Lawrence Armah Ahiah

Biographie:

Lawrence Armah Ahiah obtained his B. Sc. (Hons) Biological Sciences degree in 1996 at the Kwame Nkrumah University of Science and Technology, Kumasi. He holds a Master of Philosophy in Zoology and Ph.D. Aquaculture degrees all from the University of Cape Coast, Ghana. He is currently a Director with the Fisheries Commission of Ghana.

Author:

John Blay

Biographie:

Author:

Kobina Yankson

Biographie:

Number of Pages:

196

Book language:

English

Published On:

2020-07-20

ISBN:

978-620-2-67771-4

Publishing House:

LAP LAMBERT Academic Publishing

Keywords:

Breeding value, Heritability, Response to selection, Sarotherodon melanotheron, Brackish water

Product category:

SCIENCE / Horticulture