Effects of feeding dry fat and yeast culture on broiler chicken performance
A feeding trial with 400 male broilers (Ross) was conducted to investigate the effect of using dry fat and 2 levels of yeast culture (Saccharomyces cerevisiae) on performance, blood glucose, cholesterol, calcium, phosphorus, cobalt, copper, magnesium, manganese, and zinc. One-day-old broilers were distributed among 4 treatments, with 4 replicates and 25 chicks/replicate. The treatments were: diet 1 (basal diet with maize oil, group T1), diet 2 (basal diet with dry fat, group T2), diet 3 (basal diet with dry fat + 2 kg of yeast culture/t diet, group T3), and diet 4 (basal diet with dry fat + 3 kg of yeast culture/t diet, group T4). Measurements included body weight gain, feed intake and conversion, serum parameters, carcass weight, and abdominal fat. The inclusion of dry fat and 3 kg of yeast culture/t improved body weight gain and feed conversion (P < 0.05) compared with chicks from groups T2 and T3, but no differences were observed when compared with the control group. The serum cholesterol levels were significantly (P < 0.05) reduced by adding the yeast culture when compared with chicks from the control and T2 groups. Furthermore, the abdominal fat percentages were significantly lower in chicks from groups T1, T3, and T4 compared with that of group T2. The Co and Zn concentrations in the liver were significantly reduced (P < 0.001 and P < 0.05, respectively) by feeding of yeast culture, but no effect was observed for Cu, Mn, and Mg concentrations. In conclusion, the addition of yeast culture (3 kg/t) to diets containing dry fat improves broiler growth performance and positively affects the carcass characteristics by reducing the abdominal fat and blood cholesterol level.
Effects of feeding dry fat and yeast culture on broiler chicken performance
A feeding trial with 400 male broilers (Ross) was conducted to investigate the effect of using dry fat and 2 levels of yeast culture (Saccharomyces cerevisiae) on performance, blood glucose, cholesterol, calcium, phosphorus, cobalt, copper, magnesium, manganese, and zinc. One-day-old broilers were distributed among 4 treatments, with 4 replicates and 25 chicks/replicate. The treatments were: diet 1 (basal diet with maize oil, group T1), diet 2 (basal diet with dry fat, group T2), diet 3 (basal diet with dry fat + 2 kg of yeast culture/t diet, group T3), and diet 4 (basal diet with dry fat + 3 kg of yeast culture/t diet, group T4). Measurements included body weight gain, feed intake and conversion, serum parameters, carcass weight, and abdominal fat. The inclusion of dry fat and 3 kg of yeast culture/t improved body weight gain and feed conversion (P < 0.05) compared with chicks from groups T2 and T3, but no differences were observed when compared with the control group. The serum cholesterol levels were significantly (P < 0.05) reduced by adding the yeast culture when compared with chicks from the control and T2 groups. Furthermore, the abdominal fat percentages were significantly lower in chicks from groups T1, T3, and T4 compared with that of group T2. The Co and Zn concentrations in the liver were significantly reduced (P < 0.001 and P < 0.05, respectively) by feeding of yeast culture, but no effect was observed for Cu, Mn, and Mg concentrations. In conclusion, the addition of yeast culture (3 kg/t) to diets containing dry fat improves broiler growth performance and positively affects the carcass characteristics by reducing the abdominal fat and blood cholesterol level.
___
- Daghir, N.J., Abdul-Baki, T.K.: Yeast protein in broiler rations. Poult. Sci., 1997; 56: 1836–1841.
- Plavnik, I., Scott, M.L.: Effects of additional vitamins, minerals, or brewer’s yeast upon leg weaknesses in broiler chickens. Poult. Sci., 1980; 59: 459–464.
- Stanley, V.G., Ojo, R., Woldesenbet, S., Hutchinson, D., Kubena, L.F.: The use of Saccharomyces cerevisiae to suppress the effects of aflatoxicosis in broiler chicks. Poult. Sci., 1993; 72: 1867–1872.
- Madriqal, S.A., Watkins, S.E., Adams, M.H., Waldroup, A.L., Waldroup, P.W.: Effect of an active yeast culture on performance of broilers. Poult. Sci., 1993; 72: 87 (abstract).
- Bradley, G.L, Savage, T.F., Timm, K.I.: The effects of supplementing diets with Saccharomyces cerevisiae var. boulardii on male poult performance and ileal morphology. Poult. Sci., 1994; 73: 1766–1770.
- Hosseini, S.C.: The effect of utilization of different levels of Saccharomysec cerevisiae on broiler chicken’s performance. Global Veterinaria, 2011; 6(3): 233–236.
- Onifade, A.A.: Growth performance, carcass characteristics, organs measurements and haematology of broiler chickens fed a high fiber diet supplemented with antibiotics or dried yeast. Nahrung., 1997; 41(6): 370–374.
- Bradley, G.L., Savage, T.F.: The effect of autoclaving a yeast culture of Saccharomyces cerevisiae on turkey poultry performance and the retention of gross energy, and selected minerals. Anim. Feed Sci. Technol., 1995; 55: 1–7.
- National Research Council: Nutrient Requirements of Poultry. National Academy Press, Washington, DC, USA. 1994. AOAC: Official Methods of Analysis. 15th edn., Association of Official Analytical Chemists, Arlington, VA, USA. 1990. Steel, R.G., Torrie J.H.: Principles and Procedures of Statistics. 2nd edn., McGraw-Hill Inc., New York, NY, USA. 1980. Pesti, G.M., Bakalli, R.I., Qiao, M., Sterling, K.G.: A comparison of eight grades of fat as broiler feed ingredients. Poultry Sci., 2002; 81: 380–390.
- Zhang, A.W., Lee, W.D., Lee, S.K., Lee, K.W., An, G.H., Song, K.B., Lee, C.H.: Effect of yeast (Saccharomyces cerevisiae) cell components on growth performance, meat quality and ileal mucosa development of broiler chicks. Poult. Sci., 2005; 84: 1015–1021.
- Gao, J., Zhang, H.J., Yu, S.H., Wu, S.G., Yoon, I., Quigley, J., Gao, Y.P. Qi, G.H.: Effects of yeast culture in broiler diets on performance and immunomodulatory functions. Poult. Sci., 2008; 87: 1377–1384.
- Ignacio, E.D.: Evaluation of the effect of yeast culture on the growth performance of broiler chicks. Poult. Sci., 1995; 74: 196 (abstract).
- Onifade, A.A., Babatunde, G.M., Afonja, S.A., Ademola, S.G., Adesina, E.A.: The effects of a yeast culture addition to a lowprotein diet on the performance and carcass characteristics of broiler chickens. Poult. Sci., 1998; 7: 44 (abstract).