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Reprod. Nutr. Dev.
Volume 41, Number 4, July-August 2001
Page(s) 365 - 375
DOI: 10.1051/rnd:2001137

Reprod. Nutr. Dev. 41 (2001) 365-375

Effect of dietary supplementation of fatty acids and vitamins on the breeding performance of the carp Catla catla

Samiran Nandia, Debnarayan N. Chattopadhyayb, Jadunath P. Vermab, Sampad K. Sarkarb and Pratap K. Mukhopadhyaya

a  Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar-751 002, India
b  Krishi Vigyan Kendra / Trainers' Training Centre, Central Institute of Freshwater Aquaculture, Bhubaneswar-751 002, Orissa, India

(Received 15 March 2001; accepted 10 September 2001)

Five isonitrogenous diets (~33% crude protein) were fed to the brood female carp, Catla catla (weighing 3.0 to 5.5 kg), for a period of 93 days in order to observe their breeding performance in earthen ponds. Diet-I (control) contained only basic ingredients like rice bran, groundnut oil cake, roasted soybean meal, fish meal and mineral mixture; diet-II contained added vitamins; diet-III contained added vitamins and vegetable oil (rich in n-6 polyunsaturated fatty acids, PUFA); diet-IV contained added vitamins and fish oil (rich in n-3 PUFA); and diet-V contained added vitamins and a mixture of vegetable and fish oils. The results showed that nutritional quality of the diet considerably influenced breeding performance in the species. The total number of matured females was the highest in the diet-V group and maturity was advanced by 35 days in this group compared to the control. In diet-III and diet-V groups, all the maturated females bred fully and the relative fecundity was increased significantly in diet III, IV and V. The maximum (73.4% ) fertilisation rate was observed in the diet-V group, followed by 61.3% , 56.8% , 49% and 22.7% in diet-I, diet-IV, diet-III and diet-II groups respectively. Most of the eggs in the diet-II treatment group remained immature. The various data thus obtained suggest that dietary supplementation of both n-3 and n-6 PUFA, is essential to improve gonadal maturation, breeding performance and spawn recovery in the catla female broodstock.

Key words: diet / fatty acid / broodstock / breeding performance / Catla

Correspondence and reprints: Pratap K. Mukhopadhyay

© INRA, EDP Sciences 2001