Nutrient digestibility, blood profiles and fecal microbiota are influenced by chitooligosaccharide supplementation of growing pigs

作者：Wang J P; Yoo J S; Kim H J; Lee J H; Kim I H^*

来源：Livestock Science, 2009, 125(2-3): 298-303.

DOI：10.1016/j.livsci.2009.05.011

• Chitooligosaccharide
• Digestibility
• Blood profiles
• Fecal bacteria
• Growing pigs

This study was conducted to evaluate the effects of dietary chitooligosaccharide (COS) supplementation on growth performance, nutrient digestibility, blood profiles and fecal microbiota in growing pigs. A total of 144 [(Landrace x Yorkshire) x Duroc] pigs with an initial body weight of 23.6 +/- 1.1 kg were allotted to one of the following dietary treatments: 1) basal diet: 2) basal diet with 44 mg/kg of tylosin (100 mg/kg tylosin); 3) basal diet with 5 g/kg of COS and 4) basal diet with 5 g/kg COS and 44 mg/kg tylosin. There were nine replications per treatment with four pigs per pen. Throughout the experiment, pigs that were treated with a combination of COS and tylosin had a lower ADFI (P=0.02) and higher gain/feed ratio (P<0.05) than the other treatments. In addition, administration of either COS or tylosin alone significantly increased the digestibility of dry matter, nitrogen and gross energy (P<0.05). The red blood cell (RBC) and white blood cell (WBC) counts, as well as the serum albumin concentrations were not affected by COS or tylosin supplementation. However, the lymphocyte proportion and serum total protein concentration were increased in pigs fed tylosin supplemented diets compared with those pigs fed diets not supplemented with tylosin (P<0.05). Administration of tylosin significantly increased serum IgG concentration (P=0.02); however, treatment with COS or tylosin supplementation had no effect on the total cholesterol or triglyceride concentrations. The serum HDL cholesterol concentration was significantly increased in pigs treated with COS (P=0.02) compared to the pigs fed diets without COS. The COS administration also decreased the number of fecal Escherichia coli (P<0.01), whereas the number of fecal Lactobacilli was not influenced by either COS or tylosin administration. Results of the current study indicate that dietary supplementation of COS can improve nutrient digestibility and haematological profiles, as well as decrease of fecal E. coli populations in growing pigs.

• 出版日期2009-11