Effect of energy source (oil vs. sucrose) on broiler growth performance, blood chemistry and gastrointestinal morphology

摘要

This experiment was designed to examine the effect of substituting fat in broiler grower diet with sucrose on; growth parameters, gastrointestinal morphology, and blood chemistry parameters in broiler chickens. Fifty six broilers were divided into two treatment groups (n ＝ 28 in each group). Two dietary treatments were formulated and experimented: corn-soy?based diet containing 5% oil (control) and corn-soy?based diet formulated including sucrose (7%). The two diets were is nitrogenous and is caloric. All the birds were exposed to the same handling and growing conditions. The experiment went for 21 days (on birds aging from 21 to 42 days). At the end of week 6(42 days of age), all broilers in each treatment were slaughtered via neck slit. All birds were eviscerated for carcass and gastrointestinal morphological characterization. Blood samples were taken to measure blood metabolites (blood lipoprotein, albumin, triglyceride, glucose, and cholesterol levels). The results showed that the replacement of fat with sucrose significantly increased the weekly gain during the study period as well as the final body weight. The replacement of fat with sucrose significantly increased the carcass weight and altered; gastrointestinal morphology (weight of gizzard and small intestine), blood lipoprotein (HDL and LDL) and total cholesterol levels. In conclusion, the substitution of fat with sucrose in corn-soy?based diet within experimented nutrient specifications has a positive impact on broiler growth performance.