2018 Vol.24 No.1 PP 148-154

EFFECT OF PHOTOPERIOD ON GROWTH PERFORMANCE, FEED UTILIZATION AND CARCASS COMPOSITION IN CHANNA PUNCTATUS

SUMAN KAPUR

PG Department of Zoology,
D.A.V College, Sector-10, CHANDIGARH.
*Corresponding Author :
Email: sumankapurdav@yahoo.com

ABSTRACT

To study the effect of photoperiod on growth performance in C. punctatus, the fish were exposed to three combinations of day length i.e. LD 14:10, LD 12:12 and LD 9:15 at 25°C. Variables tested were weight gain, length gain, condition factor, FCR, body composition, VSI and HSI. Fish exposed to long photoperiod showed high growth performance followed by equal and short photoperiod. Significantly low concentration of ammonical nitrogen and orthophosphate in holding water were observed in fish exposed to LD 14:10 as compared to LD 12:12 and LD 9:15. VSI values were significantly high (P0.05) in group of fish exposed to LD 14:10, followed by LD 12:12 and LD 9:15. On the other hand, HSI was significantly decreased in fish exposed to LD 9:15, while HSI values under LD 14:10 and LD 12:12 were equal.

Key words : C. punctatus, Growth performance, Photoperiod.