Effects Of Feeding Corn Distillers Dried Grains With Soluble On Growth Performance, Slaughter Performance And Meat Quality In Geese

The objective of this study was to evaluate the effects on growth performance, Slaughter performance and meat quality after adding corn distillers dried grains with solubles(DDGS) and decide the optimum level of DDGS in geese. The result of this study can provides a theory base of the application of DDGS.One hundred and sixty Yangzhou geese aged21days were randomly divided into4groups, each of which was replicated4times with10geese per replicate. The control group was fed with a corn-soybean meal basal diet, and trial groups Ⅰ, Ⅱ and Ⅲ were fed with the basal diet containing10%,20%and30%DDGS, respectively. The study lasted for6weeks. Body weight and feed intake were measured weekly.In the first experiment, results showed that no differences were found in feed intake and feed/gain by adding DDGS to the diets (P>0.05).There was no significant difference in average daily gain (ADG) among all groups during the experiment period (P>0.05) even though body weight of the geese in trial groups Ⅰ and Ⅱ was significantly higher than that of geese in the control group at8and9weeks of age (P<0.05).Compared with trial groups Ⅰ,there were significant differences in percentage of halt-eviscerated yield、percentage of leg muscle and percentage of eviscerated yield in control group and trial groups Ⅲ(P<0.05),no significant differences(P>0.05)in dressed percentage、 percentage of breast muscle and percentage of abdominal fat were observed among the four dietary treatments groups, but trial groups Ⅰ and Ⅱ groups had a trend to increase slaughter performan The second experiment was conducted to study the effects of dietary levels of corn distillers dried grains with solubles (DDGS) on meat quality in geese. At the end of the experiment,32geese were slaughtered and samples of the chest and leg muscle were taken and measured for the meat quality. No significant difference occurred in pH, meat color, shear force and water loss rate of chest muscle between trial groups and control group. However, the value of TBARS of leg muscle of geese in trial groups Ⅰ and Ⅱ was significantly higher than that of geese in the control group in the first day of the determination (P<0.05), and much higher value of TBARS was found in the fourth and fifth day between each trial group and control group (P<0.05). From the measured results on each day during the5-day determination period, there was a trend in TBARS value to increase firstly and then decrease with the dietary levels of DDGS increased.. In conclusion, there are no effects on growth performance and conventional meat quality when diets containing0to30%DDGS, but feeding diets containing DDGS to geese also results in an acceleration of lipid oxidation in muscle, which will cause the rancidity.In the third experiment,The control group and trial groups have no significant difference in dry matter availability,AME,TME,apparent energy utilization ratio,true energy utilization ratio and protein utilization ratio. The result shows that the utilization ratio of energy and protein wasn’t affected by adding DDGS in diets.In a word, it is conducted that incorporating10%-30%DDGS in the diets was feasible, but in the meat quality, the lipid oxidation will be deepened. So the question should be focus in application.