| Geese (JL AU I) were used to study the effect of leymus chinensis fibre on growth performance,metabolic rate, digestive tract development, meat quality and the histological changes of digestivesystem of the birds by means of feeding trials, metabolic trials, slaughtering trials and histologicalobservations. This experiment provides credible theoretical basis for utilizing leymus chinensis fibre ingeese.Geese have the ability of utilizing crude fibre; however, this ability varies in different breed ofgeese. In this experiment, initially the digestibility for CF, NDF, ADF and hemicellulose in geese were19-20.25%, 36.35-38.70%, 10.80-15.69% and 46.64-48.87%, respectively; in later periods, thecorresponding rates for CF, NDF, ADF and hemicellulose were 15.31-18.02%, 25.60-29.85%,ADF5.18%-12.78% and 34.82-38.40%, respectively.In the fourth week, the developments of the digestive tracts of the geese were different. The gizzardwere 50% developed, The weight and length of intestine 80% developed, the weight of caecum and ofrectum 45.15% developed, the length of caecum and rectum 70.20%-80.14% developed.Using leymus chinensis fibre as fibre source, the number and height of caecum plica may beincreased by increasing the crude fibre content of diet from 50% to 60%. However, this will hinder thedevelopment on the length of the caecum, thickness of intestine and length of intestine fluff. The feedintake and weight gain were also decreased.The results of the experiment showed that the weight gain of the geese were relatively fast during 4to 8 weeks of growth. Therefore, it is reasonable to increase the energy level of diet to meet therequirement for growth in this period so that it is possible to increase the finishing weight and shortenthe fattening period.
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