| This paper was carried out to study the effect of different fiber resources on gro-wth performance, metabolic rate, digestive tract, meat quality and the change of micr-robes in intestine of geese. The mechanism of utilizing crude fiber for geese was disc-ussed. In the paper, the JL AU I (meat linebreeding) geese were selected as experime-ntal animals, while Sweetclover, Amaranthus and Corn stalk were considered as three kinds of fiber resources. The test was divided into two periods. The influence of diff-erent-day geese on the metabolic rate of different diet nutrition was studied, respectiv-ely. In production practice, the paper supplied the reliable bases for utilizing various fiber resources and studying utilization of fiber in geese.The results showed as follows:Growth performance of geese was influenced by different fiber resources to some extent. It was beneficial to increase the growth performance of geese that suitable fiber was added into the diet Among three fiber resources, Amaranthus promoted most significantly the body weight gain of geese, and the ratio of meat production to feed was lowest in corn stalk group. Among the total experimental period, the total weight gain of geese in Amaranthus, Corn stalk, Sweetclover and control group was 2914.03g, 2665.25g, 2429.42g and 2650.13g, respectively. The ratio of meat production to feed was 2.808,2.705,2.859and 3.348, respectively. In two periods, the peak period of average daily weight gain was at the age of 4-week and 8-week.Due to different contents of NDF and hemicellulose in different fiber resources, they were utilized by geese differently. Contents of NDF and hemicellulose inSweetclover, Amaranthus and corn stalk were 30.99% and 14.77%; 67.99% and 35.71%; 65.50% and 34.85%. Feeding experiment showed that Amaranthus could be well used, so it is possible that we considered that the more fiber resource contained NDF and hemicellulose, the better it was used. In the experiment, for the former period, digestibility of fiber components in geese were: CF 17.77%~33.18%, ADF 12.94%-14.59%, NDF 31.82%-40.93%, hemicellulose 37.78%-48.59%; for the latter period, metabolic rates of fiber components was: CF 23.71 % -35.54%, ADF 16.09%-18.35%, NDF 35.28%-43.80%,hemicellulose 39.43%-50.53%. Among them, digestibility of NDF and hemillulose were highest in Amaranthus group.While content of crude fiber was increase, belly-fat rate of geese was reduced and fat contents of chest muscle (CM) and thigh muscle (TM) were decreased.In cecum contents of geese, the total number of bacteria was 2.4xl07-5.4xl07; the number of clostridium was 1.69xl06-.68xl06; the number of bacteroides was 1.20xl04- 1.57x104. The total number of bacteria and clostridium were close to that of rabbit and they were increased in fiber groups, especially in Amaranthus group(P<0.01), being 5.4xl07and 7.68xl06.The number of bacteroides of geese was low and was not significantly different between control group and fiber groups, so we could regard that bacteroides was not the main microflora for geese.Fiber could promoted the growth of gizzard, relative weight and thickness of intestine and cecum. Among groups, the above items of Amaranthus group was highest, being 3.77%, 1.63%, 3.35%, 0.24% and 3.13%, respectively. However, the length of intestine and cecum was not significantly different (P>0.05). The relative weight and length of rectum was not significantly different between each group, butthe rectum in Amaranthus group was thickest, up to 7.62%. There were fewer contents in intestine and cecum for Amaranthus group, while contents in rectum were not significantly different between groups.In terms of utilizing fiber for geese, the breakdown of cell wall by gizzard was main before 7 weeks; gizzard and microbes in cecum functioned together after 7 weeks.
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