Growth and survival in two complete diallele crosses with five stocks of Rohu carp ( Labeo rohita)

• Published in: Aquaculture Vol. 209; no. 1; pp. 103 - 115
• Main Authors: Gjerde, Bjarne, Reddy, Padala V.G.K, Mahapatra, Kanta D, Saha, Jatendra N, Jana, Ranjit K, Meher, Prem K, Sahoo, Minakshi, Lenka, Smita, Govindassamy, P, Rye, Morten
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 28-06-2002; Elsevier Science; Elsevier Sequoia S.A
• Subjects: Animal aquaculture; Animal productions; Aquaculture; Biological and medical sciences; Cross-breeding; Fish; Freshwater; Fundamental and applied biological sciences. Psychology; Genetics; Heterosis; Labeo rohita; Pisciculture; Rohu carp; Vertebrate aquaculture; Asia; India; Rohu carp; Labeo rohita; Cross-breeding; Heterosis; Growth rate; Wild animal; Survival; Freshwater environment; Vertebrata; Reproduction; Pisces; Genetic improvement; Pisciculture; Captivity; Cyprinidae
• ISSN: 0044-8486; 1873-5622
• DOI: 10.1016/S0044-8486(01)00848-1

The experiment of two 3×3 complete diallele crosses was carried out with four wild river stocks (Ganga, Yamuna, Brahmaputra and Sutlej) and one farmed stock (Local) of Rohu carp (
Labeo rohita). The Local stock was included in both diallele crosses. In total, 864 fish were individually tagged at 6 months of age and reared for 14 months in three monoculture and two polyculture earthen ponds in Orissa, India. For harvest weight, total heterosis for each of the six stock crosses was low or negative and average heterosis was also low and in most cases not significantly different from zero. For survival, total and average heterosis was negligible and not significantly different from zero. It is concluded that genetic improvement through crossbreeding of Indian stocks of Rohu carp has little practical significance.