An, B.K.
(College of Animal Bioscience and Technology, Konkuk University)
,
Cho, B.L.
(College of Animal Bioscience and Technology, Konkuk University)
,
You, S.J.
(College of Animal Bioscience and Technology, Konkuk University)
,
Paik, H.D.
(College of Animal Bioscience and Technology, Konkuk University)
,
Chang, H.I.
(School of Life Science and Biotechnology, Korea University)
,
Kim, S.W.
(Department of Chemical and Biological Engineering, Korea University)
,
Yun, C.W.
(School of Life Science and Biotechnology, Korea University)
,
Kang, C.W.
(College of Animal Bioscience and Technology, Konkuk University)
A study was conducted to evaluate the effects of dietary yeast derived ${\beta}$-glucan and single-strain probiotics on the growth performance and antibody response in broiler chicks. Six hundred and thirty 1-d-old male broiler chicks were divided into seven groups, placed into three pens...
A study was conducted to evaluate the effects of dietary yeast derived ${\beta}$-glucan and single-strain probiotics on the growth performance and antibody response in broiler chicks. Six hundred and thirty 1-d-old male broiler chicks were divided into seven groups, placed into three pens per group (30 birds per pen) and fed one of seven non-medicated corn-SBM based experimental diets containing 0.025, 0.05 or 0.1% Saccharomyces cerevisiae ${\beta}$-glucan and 0.05, 0.1 or 0.2% Bacillus amyloliquefaciens (BA-pro, $1.3{\times}10^9/g$) or devoid of them for 5 wk. The body weight gains in groups fed diets containing 0.025 or 0.1% ${\beta}$-glucan, 0.1% or 0.2% BA-pro were significantly higher (p<0.05) than the control over 1-35 d. Feed conversion rates of groups fed ${\beta}$-glucan and BA-pro tended to be improved compared to the control group. There were no significant differences in the relative weights of liver, abdominal fat and breast muscle. No significant differences were observed in the activities of serum enzymes and concentrations of various cholesterol fractions. The antibody titers against Newcastle disease or infectious bronchitis virus in the chicks fed diets containing ${\beta}$-glucan and BA-pro were significantly higher (p<0.05) than in the control. The concentrations of cecal lactic acid bacteria in all groups fed BA-pro were significantly increased (p<0.05) compared to the control. These results indicated that dietary yeast derived ${\beta}$-glucan and BA-pro exerted growth-promoting and immune-enhancing effects in broiler chickens. In addition, BA-pro added to the diets modulated the profiles of cecal microflora, reflecting a potential to be beneficial microorganisms in chickens.
A study was conducted to evaluate the effects of dietary yeast derived ${\beta}$-glucan and single-strain probiotics on the growth performance and antibody response in broiler chicks. Six hundred and thirty 1-d-old male broiler chicks were divided into seven groups, placed into three pens per group (30 birds per pen) and fed one of seven non-medicated corn-SBM based experimental diets containing 0.025, 0.05 or 0.1% Saccharomyces cerevisiae ${\beta}$-glucan and 0.05, 0.1 or 0.2% Bacillus amyloliquefaciens (BA-pro, $1.3{\times}10^9/g$) or devoid of them for 5 wk. The body weight gains in groups fed diets containing 0.025 or 0.1% ${\beta}$-glucan, 0.1% or 0.2% BA-pro were significantly higher (p<0.05) than the control over 1-35 d. Feed conversion rates of groups fed ${\beta}$-glucan and BA-pro tended to be improved compared to the control group. There were no significant differences in the relative weights of liver, abdominal fat and breast muscle. No significant differences were observed in the activities of serum enzymes and concentrations of various cholesterol fractions. The antibody titers against Newcastle disease or infectious bronchitis virus in the chicks fed diets containing ${\beta}$-glucan and BA-pro were significantly higher (p<0.05) than in the control. The concentrations of cecal lactic acid bacteria in all groups fed BA-pro were significantly increased (p<0.05) compared to the control. These results indicated that dietary yeast derived ${\beta}$-glucan and BA-pro exerted growth-promoting and immune-enhancing effects in broiler chickens. In addition, BA-pro added to the diets modulated the profiles of cecal microflora, reflecting a potential to be beneficial microorganisms in chickens.
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문제 정의
The objective of the present study was to investigate the dietary effects of P-glucan and single-strain probiotics on growth performance, humoral immunity and the cecal microflora in broiler chicks.
제안 방법
The serum was separated from each blood sample by centrifugation and stored at -30°C until use. The concentration oftotal cholesterol (Total-C) and high-density lipoprotein cholesterol (HDL-C), the activity of glutamic-oxaloacetic transaminase (GOT) and glutamic-pyruvic transaminase (GPT) in serum were measured according to the colorimetric method using cholesterol diagnostic-kit (Cholesterol E kit and HDL-cholesterol kit, Youngdong Medical Corporation) and GOT-GPT assay kit (GOT-GPT assay kit, Youngdong Medical Corporation).
대상 데이터
A total of six hundred thirty Ross male broiler chicks at 1 d of age were weighed and randomly assigned into seven experimental treatments. Each treatment was comprised three replicates of 30 birds. The chicks were fed one of seven non-medicated corn-SBM based diets for 5 wks; a control diet containing neither β-glucan nor probiotics, 3 diets containing β-glucan at different dosages (0.
데이터처리
05 (Duncan, 1955). Percentage data were transformed to arc sine percentages before square root percentages ANOVA was performed.
The main effects between treated groups were subjected to ANOVA using the general linear models procedure of SAS (2002), and significant differences were determined using Duncan's multiple range test at the level of p<0.05 (Duncan, 1955). Percentage data were transformed to arc sine percentages before square root percentages ANOVA was performed.
성능/효과
In conclusion, dietary yeast derived p-glucan and BA-pro exerted growth-promoting and immune-enhancing effects in broiler chickens fed non-medicated diet.
In conclusion, dietary yeast derived β-glucan and BA-pro exerted growth-promoting and immune-enhancing effects in broiler chickens fed non-medicated diet. In addition, BA-pro added to the diets positively modulated the profiles of cecal microflora, resulting in a significant probiotic effect.
It can be postulated that some ofthese effects are mediated by cytokines secreted by immune cells stimulated with p-gucan. In this study, feeding of p-gucan and BA-pro resulted in significant increase (p<0.05) in the antibody titer against NDV and IBV than those of unfed control. It was suggested that dietary p-gucan and BA-pro might be useful in treating against viral diseases because of immunostimulating activity.
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