Studies On Digestion Of The Fibre In Yangzhou Goose

An experiment is conducted with Yangzhou goose to determine and compare the metabolic rate of the fibre of three kinds of feedstuffs between intact and caecectomized geese and the effects of the metabolic rate of the other nutrituous substance by the change of the fibre component, and an early feeding experiment of Yangzhou goose is carried out with five different alfalfa added rations. The research results are as follows: 1.The metabolic rate of NDF of the basal diet is 63.91%, which is 17.76% and 28.19% higher than 15% alfalfa and 15% spartina grass meals, and the different between the basal diet and 15% spartina grass meals reachs extremely significant.The metabolic rate of NDF of caecectomized geese to three kinds of diets is respectively 12.84%,6.67%, 8.13% lower than the intact geese, and the differences among three diets of the caecectomized geese are extremely significant.2.The metabolic rates of ADF in three different diet, are 15.61%,10.55% and 9.57%.The difference between the diet added 15% alfalfa and 15% spartina is not significant. But compared with the basal diet, the variance is at the significant level. The metabolic rate of ADF in caecectomized is lower than those intact geese, but the difference in three diets is not significant (P > 0.05).This indicates that the caecum of the geese can ferment some of the ADF.3.The metabolic rate of hemicellulouse in basal diet is 79.55%, higher than those added 15% alfalfa and spartina diets. The compared results illustrates that the difference of the metablic rate of hemicellulouse in the three diets is at the significant level, and the difference between basal diet and 15% alfalfa gets to extremely significant.Themetabolic rate of the caecectomized in basal diet is 67.24%, 12.31% lower than those intact geese (P < 0.05), com pared with the intact geese, those caecectomized geese' s metabolic rate of the high fibre diets is 4.17% and 7.49% lower than intact one (P > 0.05). In the group of the caecectomized geese, the different of the metabolic rate of the hemicellulouse of the basal diet and 15% added alfalfa diet is not significant, but compared with 15% spartina diet, the difference is significant (P < 0.05). This indicates that the geese can make good use of the hemicellulouse, and the points of the degradation of the hemicellulouse are not the intestinum caecum. 4.The metabolic rate of crude protein, Ca, P is 50.45%, 49.17%, 38.88%, when the geese are fed with basal diet. The same tendency can be found in the different diet: basal diet > 15% alfalfa diet > 15% spartina. The metabolic rate of these nutrients in the intact geese is much higher than those caecectomized geese, but the difference is not significant.5. In the early feeding experiment, those geese fed with 10% alfalfa added diet grow better than the other diets. At the end of 5 weeks, the average weight of the geese can reach 1470 grams, the survival probability arriving at 96%, and feed conversion ratios were 1.86.