Browsing by Author "Macelline, S.P."

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    Effect of different levels of Stocking Density and Dietary Sodium Bicarbonate (NaHCO3) on Perforinance,MeatQuality and Organ Weights of Broiler Chicken
    (Uva Wellassa University of Sri Lanka, 2018) Benjamin, P.N.; Nambapana, N.M.N.; Macelline, S.P.; Ang, L.
    This study was conducted to determine the effectiveness of different levels of NaHCO3 and different stocking densities on performance and meat quality of broiler chicken. A total of 360, 19-day-old broiler chicks were randomly allocated in to 6 experimental units in a 2 x 3 factorial arrangement of two different stocking densities as D1 (Standard density: 1.2 ft2 bird"') and D2 (High density: 0.85 ft2 bird-1 and three levels of NaHCO3 (0%, 0.3%, 0.5%). Each treatment consisted with 5 replicates. Data were subjected to factorial analysis using the General Linear Models procedure of two-way ANOVA of statistical analysis system. The highest (P < 0.05) daily weight gain of broilers was recorded from D1 (59 g bird-1 day-1), 0.3% NaHCO3 (69 g bird-1 day-1). The highest (P < 0.05) average daily feed intake was recorded from D2 (112 g bird-1 day-1), 0.5% NaHCO3 (116 g bird-1 day-1). Favourable (P < 0.05) feed conversion ratio was obtained from D2 (2.31) and 0% NaHCO3 (3.06). The highest (P < 0.05) pH value was recorded from D1 (5.53) and 0.3% NaHCO3 (5.51) and lowest (P > 0.05) from D2 (5.35), 0% NaHCO3 (5.30). Highest (P < 0.05) redness of breast meat was recorded from D1 (12.49), 0.3% NaHCO3 (12.37). The highest (P < 0.05) relative weight of intestine was recorded from 0% NaHCO3 (4.67). Highest (P < 0.05) liver weight was recorded from 0.3% NaHCO3 (2.60). In conclusion, dietary supplementation of 0.3% NaHCO3 has better effects on growth performance of broilers regardless of the stocking density.
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    Effects of Different Levels of Dietary Vitamin Premix (ENHALOR) in Diets on Growth Performance and Meat Quality of Broiler Chicken
    (Uva Wellassa University of Sri Lanka, 2018) Priyadarshana, S.P.M.; Weerasinghe, W.M.S.S.; Gunawardana, K.G.U.I.P.; Macelline, S.P.; Anand Kumar, S.; Ang, L.; Nambapana, N.M.N.; Jayasena, D.K.D.D.
    Poultry industry is a well-established livestock industry in Sri Lanka. The profitability of the industry depends on growth performance and meat quality of broilers and various feed additives are used in the industry. This research was conducted to determine the effect of different level of dietary vitamin premix (ENHALOR) on growth performance and meat quality of broiler chicken. Three hundred sixty-day old (Cobb 500) male broiler chicks were randomly assigned to four dietary treatments and each treatment comprised with 09 replicates. The dietary treatments included 4 concentrations of vitamin premix. The control group (To) of birds received 350 g, 350 g, 300 g ton-' of premix for booster, starter and finisher diets, respectively. The other experimental birds of three treatments were treated with vitamin premix such as T, (330 g, 280 g, 250 g ton-'), T2 (280 g, 250 g, 200 g ton-) and T3 (250 g, 200 g, 180 g ton-) in booster, starter and finisher diets respectively. Average body weight and feed intake were recorded during the experimental period. At the end of day 40 birds were slaughtered and organ weight, carcass weight, meat quality parameters were measured. The highest (p < 0.05) daily weight gain (23 g bird-' day-1), (70 g bird-1day), (73 g bird-'day`) and the lowest (p < 0.05) feed conversion ratio (1.75, 1.5 and 2.06) of broilers were recorded by T2 treatment in booster, starter and finisher phase respectively. The highest (p < 0.05) pH (6.67) of broiler breast meat was recorded from To and the lowest (6.53) pH of broiler breast meat was recorded from T,. In conclusion, the dietary supplementation of vitamin premix (ENHALOR) for broiler booster (280 g ton1), starter (250 g ton-) and finisher (200 g ton-1) diets has better effects on performance of broiler chicken.