Effect of dietary papaya peel and bakers yeast supplementation on growth performance hematological value of silver barb (Barbonymus gonionotus) and its resistance to Aeromonas hydrophila

Mahattanee Phinyo, . and Areeya Thaikosa, . and Eakapol Wangkahart, . Effect of dietary papaya peel and bakers yeast supplementation on growth performance hematological value of silver barb (Barbonymus gonionotus) and its resistance to Aeromonas hydrophila. pp. 12-22. ISSN 2672-7226

The aim of this study is to investigate the effects of dietary papaya peel and bakers yeast (Saccharomyces cerevisiae) as growth supplements for the silver barb (Barbodes gonionotus) their influence on the fishs hematological values and disease resistance against Aeromonas hydrophila. The study comprised four experimental diets namely a control (C); 4 (w/w) papaya peel (P); 2 (w/w) bakers yeast (Y); and 4 (w/w) papaya peel plus 2 (w/w) bakers yeast (PY). After eight weeks of feeding the silver barb fed with PY diet had significantly higher values of final body weight (14.530.29 g/fish) and specific growth rate (SGR 1.870.05 /day) compared with the control (P0.05). They also recorded an improved feed conversion ratio (FCR) (P0.05). However the C and P diets did not exhibit significant differences in FCR and SGR. During the feeding trial no mortality was observed. Silver barbs on PY diet had significantly higher red blood cells (RBC) and white blood cells (WBCs) than the other diet groups (P0.05). Intraperitoneal injection of 0.1 ml (0.5x10�· CFU mL- ) A. hydrophila resulted in increased mortality which was reduced with the intake of Y and PY diets. In conclusion the P diet alone showed no differences in growth performance and haematological parameters when compared with the control. However the dietary inclusion of bakers yeasts may improve growth performance as well as resistance to A. hydrophila. These results indicate that papaya peel and bakers yeast may be used as feed additives for silver barb to produce better quality fish with protection from pathogenic infection.

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Abstract

The aim of this study is to investigate the effects of dietary papaya peel and bakers yeast (Saccharomyces cerevisiae) as growth supplements for the silver barb (Barbodes gonionotus) their influence on the fishs hematological values and disease resistance against Aeromonas hydrophila. The study comprised four experimental diets namely a control (C); 4 (w/w) papaya peel (P); 2 (w/w) bakers yeast (Y); and 4 (w/w) papaya peel plus 2 (w/w) bakers yeast (PY). After eight weeks of feeding the silver barb fed with PY diet had significantly higher values of final body weight (14.530.29 g/fish) and specific growth rate (SGR 1.870.05 /day) compared with the control (P0.05). They also recorded an improved feed conversion ratio (FCR) (P0.05). However the C and P diets did not exhibit significant differences in FCR and SGR. During the feeding trial no mortality was observed. Silver barbs on PY diet had significantly higher red blood cells (RBC) and white blood cells (WBCs) than the other diet groups (P0.05). Intraperitoneal injection of 0.1 ml (0.5x10�· CFU mL- ) A. hydrophila resulted in increased mortality which was reduced with the intake of Y and PY diets. In conclusion the P diet alone showed no differences in growth performance and haematological parameters when compared with the control. However the dietary inclusion of bakers yeasts may improve growth performance as well as resistance to A. hydrophila. These results indicate that papaya peel and bakers yeast may be used as feed additives for silver barb to produce better quality fish with protection from pathogenic infection.

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Item Type:	Article
AGROVOC Term:	Cyprinidae
AGROVOC Term:	Papayas
AGROVOC Term:	Peel
AGROVOC Term:	Bakers' yeast
AGROVOC Term:	Saccharomyces cerevisiae
AGROVOC Term:	Supplements
AGROVOC Term:	Growth
AGROVOC Term:	Disease resistance
AGROVOC Term:	Aeromonas hydrophila
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/9624

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