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Abstract

APPLICATION OF DIETARY PROBIOTIC (VIBACT) LEVEL ON REPRODUCTIVE PERFORMANCE IN ICE BLUE CICHLID (MAYLANDIA GRESHAKEI)

*P. Ambika, J. Ronald and A. Pushparaj

ABSTRACT

In this study, we investigated the influence of probiotic (Vibact) supplementation on reproductive performance of developing ice blue cichlid (Maylandia greshakei) larvae. The probiotic feed V2 fed fish exhibited the maximum average fecundity per female (22.13±9.89), followed by V3 (19.7±8.36), V1 (18.14±9.19) and V4 (17.21 ± 9.2). A significant (P<0.05) decline in the average fecundity per female (14.23±6.19) was observed in fish fed the control feed (experimental group V0). The fish fed with the probiotic feeds V2 shows the higher fry survival (21.11±8.23), weight (0.76±0.04), length (41.31±1.10), fry weight (0.0026±0.003) and fry length (6.38±0.53) followed by V3 survival (17.82±7.65), weight (0.71±0.12), length (39.67±1.14), fry weight (0.0023±0.0002) and fry length (6.19±0.56), V1 survival (16.12±8.12), weight (0.74±0.11), length (39.56±1.83), fry weight (0.0024±0.0002) and fry length (6.11±0.51) and V4 survival (15.85±9.31), weight (0.68±0.10), length (39.37±1.11), fry weight (0.0022±0.0002) and fry length (6.14±0.63). All the parameters exhibited significant differences (P<0.05) within the probiotic diet fed fish. Likewise, the GSI of fish fed the probiotic feeds V2 has the higher range (9.67±0.54) followed by V3 (9.4±0.4), V1 (9.38±0.39) and V4 (8.81±0.30) were also significantly higher (P<0.05) than fish fed the control diet V0 (8.11±0.42). All the probioticfed fish exhibited significantly lower. The probiotic feed V2 fed fish exhibited the maximum average hatching and survival rate per female (97.41 and 97.67), followed by V3 (92.80 and 91.90), V1 (89.13 and 88.50) and V4 (85.44 and 84.33) throughout the experimental period. A significant (P<0.05) decline in the average hatching and survival rate per female (83.14 and 82.14) was observed in fish fed the control feed (V0).

Keywords: Maylandia greshakei, spawning, fecundity, probiotics.


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