Effects Of Different Processed Corns On Nutrient Digestion And Metabolism Of Yili Horse

This experiment consists of three tests. “Study of the digestibility to corn starch in three different processed on enzymatic hydrolysis of amylase in vitro”, “Effects of different processed corns on the digestive and metabolic and blood indicators of the half year old of Yili horse” and “Effects of different processed corns on the digestive and metabolic and blood indicators of the 1 year old of Yili horse”. The purpose of the research is to provide reference for the application of different processed corns in the horse feeding.Experiment one: Study of the digestibility to corn starch in three different processing on enzymatic hydrolysis of amylase in vitro. Experiment by in vitro enzymatic method to compare and analyze the digestibility of starch with accumulation production and net reduction of reducing sugar and cumulative consumption and consumption rate of amylose and amylopectin. In 8 h enzymatic hydrolysis processed, the total amount of reducing sugar was that the extruded corn was 16.98 mg higher than corn flour, and the steam-flaked corn was 9.88 mg higher than corn flour. The consumption rate of amylose and amylopectin extruded corn group were higher than that in the corn flour group 14.02% and 12.5% respectively, and the steam-flaked corn were higher than that in the corn flour group 9.93% and 9.02% respectively.Experiment two: Effects of different processed corns on the digestive and metabolic and blood indicators of the half year old of Yili horse. Twenty in good health of half year old of Yili horses were divided into four groups of similar number and body weight before being used in a completely randomized design experiment to digestion and metabolism. They all fed the same diet with the corn processed were different. Only the corn flour and enzyme group fed 1 g enzyme preparation more. The results showed that in the extruded corn group, the DM digestion amount increased 0.15 kg, OM digestion improved 0.21 kg, the digestibility of CP increased 2.46 g, NDF digestibility increased 2.68%, ADF digestibility were increased 2.04%, N retention rate improved 5.84%, and the amount of OM in the team-flaked corn group increased 0.11 kg to compare with the corn flour group(P<0.05). There was no significant difference between the corn flour and the corn flour and enzyme group(P>0.05).Experiment three: Effects of different processed corns on the digestive and metabolic and blood indicators of the 1 year old of Yili horse. Twenty-four in good health of 1 year old of Yili horses were divided into four groups of similar number and body weight before being used in a completely randomized design experiment to digestion and metabolism. They all fed the same diet with the corn processed were different. The results showed that in the extruded corn group, the NDF digestibility increased 5.42%, ADF digestibility were increased 5.26%, N retention rate improved 12.61%, and the digestibility of ADF in the team-flaked corn group increased 4.95% to compare with the corn flour group(P<0.05).