Academic article

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

Gjerde, Bjarne; Reddy, Padala V.G.K.; Mahapatra, Kanta Das; Saha, J.N.; Jana, R.; Meher, Prem K.; Sahoo, M.; Lenka, Smita; Govindassamy, P.; Rye, Morten

Publication details

Journal: Aquaculture, vol. 209, p. 103–115, 2002

Publisher: Elsevier

International Standard Numbers:
Printed: 0044-8486
Electronic: 1873-5622

Open Access: none

Links:
DOI

The experiment of two 3 x 3 complete diallele crosses was carried out with four wild river stocks (Ganga, Yarmina, Brahmaputra and Sutlej) and one fanned stock (Local) of Rohn 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 Rohn carp has little practical significance. (C) 2002 Elsevier Science B.V. All rights reserved.