Zhou T X, Chen Y J, Yoo J S, Huang Y, Lee J H, Jang H D, Shin S O, Kim H J, Cho J H, Kim I H
Department of Animal Resource & Science, Dankook University, No. 29 Anseodong, Cheonan, Choongnam 330-714, South Korea.
Poult Sci. 2009 Mar;88(3):593-600. doi: 10.3382/ps.2008-00285.
This study was conducted to evaluate the effects of dietary supplementation with chitooligosaccharide (COS) on growth performance, blood characteristics, relative organ weight, and meat quality in broilers. A total of 480 broilers with an average initial BW of 45.04 g per chick were randomly allocated into 1 of the following 4 dietary treatments (20 broilers per pen with 6 pens per treatment): 1) CON (basal diet), 2) ANT (basal diet + 44 mg/kg of avilamycin), 3) COS0.2 (basal diet + 14 g/kg of COS), 4) COS0.4 (basal diet + 28 g/kg of COS). The experiment lasted for 5 wk and avilamycin was administered from d 0 to 21. Growth performance was measured on d 0, 21, and 35, and all other response criteria were measured on d 35. No change in feed conversion (G:F) was observed in response to any of the treatments throughout the experimental period (P > 0.05). However, BW gain and feed intake were greater (P < 0.05) in broilers provided with feed supplemented with COS than in those in the control group. In addition, broilers had significantly greater (P < 0.05) red blood cell and high-density lipoprotein cholesterol concentrations when they were provided with the COS0.4 diet, whereas the triglyceride concentration was lower (P < 0.05) in broilers in the COS0.2 treatment group. No other blood characteristics were affected by the treatments. Additionally, as the dietary COS concentration increased, the liver weight increased (P < 0.05). Conversely, as the concentrations of dietary COS increased, abdominal fat decreased (P < 0.05). Furthermore, meat yellowness decreased (P < 0.05) as the concentration of COS increased. Finally, the breast meat and abdominal fat of birds provided with feed supplemented with COS had a lower (P < 0.05) saturated fatty acid concentration but a greater concentration of total monounsaturated fatty acids (P < 0.05) than that of birds in the control. In conclusion, COS can improve the performance and breast meat quality of broilers while increasing the red blood cell and high-density lipoprotein cholesterol concentrations in blood. In addition, COS can induce a decrease in abdominal fat and improve meat quality.
本研究旨在评估日粮中添加壳寡糖（COS）对肉鸡生长性能、血液特性、相对器官重量和肉质的影响。将480只平均初始体重为每只45.04克的肉鸡随机分为以下4种日粮处理组之一（每栏20只肉鸡，每组6栏）：1）CON（基础日粮），2）ANT（基础日粮+44毫克/千克阿维霉素），3）COS0.2（基础日粮+14克/千克COS），4）COS0.4（基础日粮+28克/千克COS）。试验持续5周，阿维霉素从第0天至第21天给药。在第0、21和35天测量生长性能，在第35天测量所有其他反应指标。在整个试验期内，未观察到任何处理对饲料转化率（G:F）有影响（P>0.05）。然而，日粮添加COS的肉鸡体重增加和采食量高于对照组（P<0.05）。此外，饲喂COS0.4日粮的肉鸡红细胞和高密度脂蛋白胆固醇浓度显著更高（P<0.05），而COS0.2处理组肉鸡的甘油三酯浓度更低（P<0.05）。其他血液特性不受处理影响。此外，随着日粮COS浓度的增加，肝脏重量增加（P<0.05）。相反，随着日粮COS浓度的增加，腹部脂肪减少（P<0.05）。此外，随着COS浓度的增加，肉色黄度降低（P<0.05）。最后，日粮添加COS的肉鸡胸肉和腹部脂肪的饱和脂肪酸浓度较低（P<0.05），但总单不饱和脂肪酸浓度高于对照组（P<0.05）。总之，COS可以提高肉鸡的性能和胸肉品质，同时增加血液中的红细胞和高密度脂蛋白胆固醇浓度。此外，COS可以减少腹部脂肪并改善肉质。
