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04-猪的饲料营养价值评价-2012PPT
Nutritional evaluation of pig feeds: development of a NE system ;Introduction ;Digestible Energy (DE);Digestive utilization of energy in pigs; BW, kg DM intake, g/d Energy digestibility, % 38 1250 82.6 49 1680 83.0 61 1940 83.6 72 2015 84.2 80 2060 84.8 90 2120 85.3 35-95 1845 83.6;Body weight, kg 40 80 250 T0, hr 19.4 26.0 62.3 MRT, hrs 33.1 37.3 81.0 ; Digestibility (%) of NDF 68 ADF 44 NCP 70 Cellulose 44 DF 50 ;NSP;Growing pig;Digestibility of energy in growing and adult pigs (n=77);Contribution of nutrients to energy supply in pigs (kJ/g) (77 diets); Growing Adult ?,%dEg Wheat 87.6 89.2 +1.8Corn 87.9 91.4 +4.0Soybean meal 85.2 90.4 +6.2Corn gluten feed 65.6 76.4 +16.5Wheat bran 56.7 62.7 +10.4Soybean hulls 51.4 70.3 +36.8;Effect of feed processing on DE;Effect of technology on DE value of wheat DDGS;Urinary and gas energy;Methodological aspects of DE and ME measurements;Metabolic utilization of energy in pigs;Utilisation of energy;O2,CO2,N2;;Net energy = ME - Heat increment;INRA Net Energy systemINRA;Noblet et al., 1993; 1994;Energy value of nutrients according to energy systems;CP, % Fat, % Heat production* Retained energy*;Diet Normal CP Low CP Energy values, % of NP diet DE 100.0 98.4 ME 100.0 99.6 NE 100.0 102.4;Estimation of NE content (MJ/kg DM);Validation of NE equations (n = 41);Methodological aspects of NE measurements;Energy values of pig feeds;INRA AFZ feeding tables;DE, ME and NE for growing pigs (+ piglets) DE, ME and NE for adult pigs (pregnant and lactating sows);;;Comparison of energy systems;DE;6;CP, % Amino acids Energy intakes, MJ/d* DE ME NE; Growing Finishing CP, % Normal Low Normal Low Amino acids + ++ + ++ Energy, MJ/BW gain DE 31.1 * 30.2 44.3 * 43.3 ME 29.9 * 29.2 42.7 * 42.0 NE 22.2 22.0 32.1 32.1;Performance of growing pigs according to energy evaluation system (3) ;Performance of growing pigs according to energy evaluation system (4);Energy requirements;NE requir
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