| The research respectively studied the effects of supplementary feeding and supplementary feeding adding Fructo-oligosaccharide on Ili mare; the influence of isolate milking to the foal through two experiments. In first experimental selects that 24 ages, the birth order, the lactation period is same, the body weight, milk yield is close in Ili horse. They were divided into three groups stochastically. The first group is a control group, second, three groups for experimental group. The first group herds but not supplementary feeding, the second group herds plus concentrate supplement, the third group herds and concentrate supplement adding 0.67% Fructo-oligosaccharide. The result indicated that: Second, three group's milk yield of the mare assume gradually increasing tendency in the experimental period which the control group milk production presents the dropping tendency, but there was no significant difference between in the experimental period and before the experimental period to milk production in the control group(P>0.05); The group that is concentrate supplement adding 0.67% Fructo-oligosaccharide is best effect to enhancement to milk yield, in the entire experimental period the milk yield was higher than other groups, the milk yield in 20-40d and 40-60d obviously higher than the control group, respectively be 9.33±0.93 kg and 9.49±0.99 kg, enhances separately compared to the control group for 12.0% and 14.5%; Second experimental group always was higher than the control group in the entire experimental period, also the milk yield in 40-60d (9.25±0.83 kg) obviously higher than the control group (8.29±0.91 kg);Between in the second group and three group milk production was no significant difference. In the control group, there was no significant difference in blood biochemical index between experimental pre and post. Blood serum concentration(Alb,Bun) in the second group and third group was obviously higher than the control group(P<0.05). respectively be 28.87±1.20mmol/L,12.37±0.77mmol/L and 29.29±1.64mmol/L, 11.77±1.00 mmol/L; Second group and third group of between was no significant difference; Other blood biochemical index (TP, Glob, A/G, Chol, K, Na, Cl, TCa, P, Mg) each group of between was no significant difference. Experiment 2: slecting 24 foals born among 10 days, after 30 days old, the foals were isolated from the mares by lines between am 8:30 am and 18:30 pm, at other time the foals forag mother milk freely. The body tength, withere height, chest girth, cannon circumferend of foals were measured in 70 days old, 115 days old 140 days old, 155 days old, 170 days old. analysis on the body size and Significance of Blood Biochemistry between comparison group and 170-days old test foals. As shown in the result, the cross point of withers height and chest circumference is around 120 days. No clearly deviation was found in test group and comparison group which were located in a normal range level. TP,Alb,Glob,A/G,Chol,K,Na,Cl,TCa,P,Mg were found no clearly in test group and comparison group which were located in a normal range level. Value of Alb reached the lower limit,they are 24.95±2.53 mmol/L,25.92±2.87 mmol/L,respectively. conclusion can be drawn as follows:(1)The milk yield can be improved by supplementary feeding and supplement adding 0.67% FOS.(2) supplementary feeding and supplement adding 0.67% Fos can be upgrade the Alb and Bun .this phenomenon might related to addition of FOS.(3) during experiment,body side and Significance of Blood Biochemistry on 170-days were retained within normal level which indicating that the the foals were isolated from the mares after 30 days old, is an avaliable method.
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