Effect of restricted feeding and refeeding on compensatory growth, nutrient utilization and gain, production performance and whole body composition of carp cultured in earthen pond

Abstract

To assess the compensatory growth, a 10‐month pond experiment was conducted in which three species of Indian major carps, viz. Catla catla, Labeo rohita and Cirrhinus mrigala (1 : 1 : 1), were stocked at 7500 ha−1 and the fish were subjected to different restricted feeding and refeeding protocols, viz. Control (C): Continuously fed for 10 months; Treatment‐1 (T‐1): Initial supplementary feeding for 2 months+ No supplementary feeding for 1 month + Refeeding for 7 months; Treatment‐2 (T‐2): Initial supplementary feeding for 2 months + No supplementary feeding for 2 months + Refeeding for 6 months; and Treatment‐3 (T‐3): Initial supplementary feeding for 2 months + No supplementary feeding for 3 months + Refeeding for 5 months in triplicate ponds. At the end of experiment, 100% growth compensation was achieved in T‐2 for all the three carp species. Among all treatments, higher weight gain, PER and PPV and lower AFCR were also recorded in T‐2, resulting in maximum fish production. The restricted feeding had significant effect (P < 0.05) on whole body chemical composition of fish. From this study, it is concluded that in 10‐month pond culture of carp in fertilized pond, the T‐2 would be the best and most economic feeding strategy.

Desempeño productivo y fisiológico de juveniles de Piaractus brachypomus sometidos a restricción de alimento

“…En cuanto a las variables de peso y longitud, aunque se presentaron diferencias significativas en peso los días 42 y 70 y en longitud (total y estándar) el día 42, al final del experimento no hubo diferencias significativas entre los tratamientos, demostrando la capacidad de la especie para manifestar crecimiento compensatorio completo (Figura 7), fenómeno reportado en varias especies de peces como: Pagrus major (Oh et al, 2007), Rutilus caspicus (Abolfathi et al, 2012), Brycon amazonicus (Urbinati et al, 2014), Oncorhynchus mikiss (Azodi et al, 2015), Catla catla, Labeo rohita y Cirrhinus mrigala (Mohanta et al, 2016), entre otras. Lo anterior se explica con la teoría expuesta en la revisión de Ali et al, (2003), que mencionan que los peces sometidos a restricción de alimento, exhiben una trayectoria de crecimiento superior a la de los peces alimentados permanentemente, evento comprobado en el presente ensayo para Piaractus brachypomus.…”

COMPENSATORY GROWTH OF Oreochromis niloticus SELECTED STRAIN FROM BOGOR, WEST JAVA

“…Compensatory growth response has been reported in many fish species following feed deprivation (Xie et al, 2001;Wang et al, 2005;Cho et al, 2006;Ribeiro & Tsuzuki, 2010;Mohanta et al, 2016).…”

Biometric Indices, Physio-Metabolic Responses and Carcass Quality in Rohu (Labeo rohita) during Feed Deprivation

“…The feed deprivation of many fish species is considered as occurring in their natural environments due to seasonal changes, competition for food, and breeding migration [1]. Intentional feed deprivation episodes are also common in aquaculture practices, with the objective of achieving the advantage of compensatory growth [2,3]. The literature suggests that fish have the capacity to tolerate long periods of feed deprivation [4,5] through a series of adaptive physiological processes [1].…”

“…For decades, Indian farmers have been practicing reduced/restricted feeding of fingerlings of Indian major carp (IMC) for a few months to obtain stunted fingerlings before stocking in grow-out ponds. The advantages of producing and stocking stunted fingerlings are direct savings on feed and labor costs and compensatory growth [2,3]. Rohu (an IMC) is an important freshwater species cultured on the Asian subcontinent.…”