2. Wheat kind the applied technology of enzymatic preparation in fundamental ration
The corn in resource of our country feed is lacked relatively, and wheaten, barley, broomcorn because contain,defy nutrient factor (Arabia wood gets together candy and B- dextrose) make feed nutrition composition cannot be digested adequately to absorb. And reduce corn dosage through adding enzymatic preparation to be able to raise the utilization rate of these raw material to achieve, reduce the goal of feed cost.
2.1
Enzymatic preparation applies in wheaten ration. Wheaten basically defying nutrient factor is Arabia gets together candy, add compound enzymatic (wood gets together candy) can reduce Arabia wood to get together the blame starch polysaccharide such as candy, reduce alvine path viscosity, raise wheatfeed utilization rate. Wait according to John (1997) report, wheat adds enzymatic preparation (basically contain wood to get together carbohydrase) hind its AME can rise 6% , metabolizable energy and corn comparative, because protein digestive rate rises, amino acid digestive rate can rise 10% . Enzymatic preparation is added in wheaten ration outside the efficiency of ameliorable feed, because add enzymatic hind wheaten metabolizable energy value increases somewhat, the relatively costly grease in can reducing feed is added. Belyavin undertook to this test and verify experiments, 0~42 day age fryer ration, the experiment is wheaten foundation grain 1 group; 2 groups are wheaten ration enzymatic, 3 groups are wheaten ration metabolizable energy 6% is enzymatic, each lysine in the group and contain sulfur amino acid content is consistent. Watch 5 make clear, each groups of 42 day age weigh statistic not to have difference alive, efficiency of 2 groups of feed relatively rise 1 group significantly 6.4% , group and difference of 3 efficiency of 1 group of feed are not notable but also rose 2.9% (among them 6% metabolizable energy are increase wheaten 40kg/t, reduce soya-bean oil dosage) .
2.2
Enzymatic preparation applies in barley ration. Add enzymatic preparation to be able to raise the energy utilization rate of barley. Graham (1995) report, in fryer barley ration, after adding B- grape carbohydrase, the apparent metabolizable energy of barley (AME) rise 10% , make its AME achieves 12.9MJ/kg thereby. B- grape carbohydrase is added in ration of pig barley foundation hind, the digestive function of barley rises apparently 6% , digestible energy amounts to 14.1MJ/kg. Han Zhengkang (2000) to growing in different fowl function influence undertook study, the result shows the fryer after adding enzymatic preparation, duck, goose produces function to rise significantly, makings flesh compares extremely marked improvement.
2.3
Wheat kind the problem that when fundamental ration replaces corn, should note. (1) the class status of sex of a few functions such as the linoleic acid in corn ration, lutein has certain effect to the growth of cultivate birds. Linoleic acid (18: 2w6) it is one of indispensible fatty acid, in pig ration the 0.1% growth that can satisfy a pig need (NRC, 1998) . The growth of the pig won't be affected because of the inadequacy of linoleic acid when wheat replaces corn to apply in pig feed. And the fowl need volume to linoleic acid is higher, linoleic acid carries the quality that affect vitelline weight and affects an egg and protein. General fowl is measured to the need of linoleic acid 1% , should consider to regard nutrient index as the consideration linoleic acid when wheaten, barley uses in rasorial ration, can solve the problem with insufficient linoleic acid through adding vegetable oil. (2) xanthophyll is in corn content is highest, main effect has in the chromatic respect of yoke and fryer, and the content of the lutein in wheaten ration is very low. Dialogue feather fryer, replace corn to improve muscle and quality of adipose colour and lustre with wheat. To egg chicken, can consider to use the raw material that contains xanthophyll to abound and by-product of its other corn to make up for the issue with small content of lutein of wheaten, barley.
Previous 1 2 34 5 Next