U. Santoso, E. Handayani and Suharyanto
Department of Animal Science, Faculty of Agriculture, Bengkulu University
Jl. Raya Kandang Limun, Bengkulu, Indonesia
Abstract
A study was conducted to determine the effects of Sauropus androgynus leaf extract on growth, carcass quality and the number of fecal microorganisms in broiler chickens. Forty-eight male Arbor Acres broiler chickens (21-d-old) obtained from a commercial hatchery were used in the present study. Experiment consisted of four treatment groups with four pen replicates of three broilers allocated randomly to each dietary treatment from day 21-42 old. One group was the control with no additional Sauropus androgynus leaf extract (SAE) (P0), and other three groups were given drinking water supplemented with 1.5 g (P1), 3.0 g (P2) or 4.5 g SAE/l water (P3). The diet used was a commercial mix (crude protein: 19% and Metabolizable Energy 3.200 kcal/kg). Feed intake significantly reduced in P2 or P3 as compared with the control (P<0.05). A decrease in feed conversion ratio was observed in treatment groups as compared with the control (P<0.05). Abdominal fat, neck fat and liver fat content were significantly reduced by SAE (P<).05), while carcass fat content was not significantly different. Number of fecal Escherichia coli in P1 or P3 (P<0.01) and fecal Streptococcus sp. and Salmonella sp. were significantly (P<0.01) reduced by SAE supplementation as compared with the control, while fecal Bacillus subtilis in P2 and Lactobacillus sp. in P1 (P<0.01) were significantly higher as compared with other groups. SAE (P2 or P3) also significantly improved meat taste, shank color but lowered meat color (P<0.05) as compared with the control group. It was found that the number of fecal Streptococcus sp. was suitable to predict abdominal fat. In conclusion, the inclusion of SAE at 4.5 g/l drinking water resulted in the best performance and carcass quality (Jurnal Ilmu Ternak dan Veteriner, 6 (4): 220-226.
Key words: Sauropus androgynus leaf extract, fat accumulation, broilers.
Jl. Raya Kandang Limun, Bengkulu, Indonesia
Abstract
A study was conducted to determine the effects of Sauropus androgynus leaf extract on growth, carcass quality and the number of fecal microorganisms in broiler chickens. Forty-eight male Arbor Acres broiler chickens (21-d-old) obtained from a commercial hatchery were used in the present study. Experiment consisted of four treatment groups with four pen replicates of three broilers allocated randomly to each dietary treatment from day 21-42 old. One group was the control with no additional Sauropus androgynus leaf extract (SAE) (P0), and other three groups were given drinking water supplemented with 1.5 g (P1), 3.0 g (P2) or 4.5 g SAE/l water (P3). The diet used was a commercial mix (crude protein: 19% and Metabolizable Energy 3.200 kcal/kg). Feed intake significantly reduced in P2 or P3 as compared with the control (P<0.05). A decrease in feed conversion ratio was observed in treatment groups as compared with the control (P<0.05). Abdominal fat, neck fat and liver fat content were significantly reduced by SAE (P<).05), while carcass fat content was not significantly different. Number of fecal Escherichia coli in P1 or P3 (P<0.01) and fecal Streptococcus sp. and Salmonella sp. were significantly (P<0.01) reduced by SAE supplementation as compared with the control, while fecal Bacillus subtilis in P2 and Lactobacillus sp. in P1 (P<0.01) were significantly higher as compared with other groups. SAE (P2 or P3) also significantly improved meat taste, shank color but lowered meat color (P<0.05) as compared with the control group. It was found that the number of fecal Streptococcus sp. was suitable to predict abdominal fat. In conclusion, the inclusion of SAE at 4.5 g/l drinking water resulted in the best performance and carcass quality (Jurnal Ilmu Ternak dan Veteriner, 6 (4): 220-226.
Key words: Sauropus androgynus leaf extract, fat accumulation, broilers.
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