Effects Of Crude Fiber Level Diets On Growth Performance, Serum Biochemical Parameters And Gastrointestinal Development In Landes Geese

The experiment was conducted to study the effect of different crude fiber level diets on growth performance, serum biochemical parameters and gastrointestinal development in Landes geese, and at the same time, study the correlation of the serum biochemical parameters and the carcass fatness. Diets' energy and crude protein were equal; the crude fiber level was 4%, 8% and 12%. One hundred eighty 41-day-old healthy landes geese, with same weight, were randomly allocated into three groups according to the single-factor design, and 3 repeats per group, with twenty pieces each repeatment, and fed the different three kinds of diets designed by different CF levels of 4%, 8%, 12% respectively. It lasted 4 weeks experimental period. The results as follows:Growth performance: Average daily feed intake (ADFI) of geese had significantly differences among three groups (p<0.05), and it rising as the CF level increasing. The second group's average daily gain (ADG) was significantly higher than the other two groups (p<0.05). The third group's feed conversion ratio (FCR) was significantly higher than the other two groups (p<0.05).Carcass merit: The dressing percentage, semi-eviscerated carcass percentage, eviscerated carcass percentage and breast muscle percentage had no significant differences among three groups. The first group's subcutaneous fat weight and subcutaneous fat percentage were significantly higher than the other two groups. The second group's alive weight, carcass weight and eviscerated carcass weight were significantly higher than the first group (p<0.05).The second group's semi-eviscerated carcass weight, breast muscle weight, leg muscle weight and leg muscle percentage were significantly higher than the other two groups (p<0.05). The third group's abdominal fat pad weight was extremely significantly lower than the other two groups (p<0.01). The first group's abdominal fat pad percentage was extreme significantly higher than the other two groups (p<0.01).Serum biochemical parameters: The serum total protein (TP), uric acid (UA) and glucose (GLU), aspartate aminotransferase (AST), alkaline phospatase (ALK) and amylase (AL) had no significant differences among the three groups. The first group's total cholesterol esters (TC) and glycerinate (TG), low density lipoprotein (LDL), very low density lipoprotein (VLDL) and apolipoprotein B (ApoB) were significantly higher...