Effects of dietary supplementation of chitosan on dry matter intake and blood parameters for dry dairy cows
Twenty multiparous Holstein dry cows were divided randomly into four dietary groups differing in the dosage of chitosan supplementation being 0,0.1,0.2 and 0.3％ of diet dry matter for the control, treatment I, II and III, respectively. Experimental diets were fed from 60 d before expected calving through 15 day in milk. Mean dry matter intake of each group cows was not significantly different (P＞0.05). Chitosan increased (P＜0.05) the concentrations of immunoglobulin (IgG, IgA and IgM) in the serum of dried cows after a feeding period of 60 days. It is suggested that chitosan could be used as an immunostimulant for dry dairy cows. Concentrations of glucose in plasma of group II and III were greater (P＜0.05) than that of control and group I. Concentration of nonesterified fatty acids in experimental groups was significantly lower (P＜0.05) than that of a control group. Supplementation of 0.2％ chitosan significantly increased P-hydroxybutyric acid concentration in plasma.
dairy cow chitosan immune function blood parameters
Q.H.Liu X.W.Liang G.L.Wang
College of Animal Science and Technology, Nanjing Agricultural University Nanjing 210095, Jiangsu, P College of Animal Science, Fujian Agricultural and Forestry University Fuzhou 350002, Fujian, P.R.Ch College of Animal Science and Technology, Nanjing Agricultural University Nanjing 210095, Jiangsu, P
国际会议
The 7tb International Symposium on the Nutrition of Herbivores(ISNH-7)(第七届国际草食动物营养研讨会)
北京
英文
930-935
2007-09-16（万方平台首次上网日期，不代表论文的发表时间）