1. Asst. Prof. Dr. SAOWALUCK YAMMUEN-ART Department of Animal and Aquatic Science Faculty of Agriculture Chiang Mai University Feed Composition 356202

2. Department of Animal and Aquatic Science, CMU 2 Feed Composition Feed Water Dry Matter (DM) Organic Matter (OM) Inorganic Matter (Ash) Crude Protein (CP) Nitrogen Free Extract (NFE) Ether Extract (EE) Crude Fiber (CF) Drying Incineration

3. Department of Animal and Aquatic Science, CMU 3 FunctionNutrients Maintenance Growth Production Reproduction Classification of nutrients by function Ener gy sourc e Nonfuel Substance * Water * Minerals * Vitamins Chemical regulation * Carbohydr ate * Fat * Protein

4. Department of Animal and Aquatic Science, CMU 4 Composition of some feedstuffs & animal products Water DM CF NFE EE CP Ash Fresh basis or as fed basis (%) Baby corn husk82.617.43.710.40.71.70.8 Corn grain10.489.64.570.74.08.02.5 Rice bran9.590.59.941.717.512.88.6 Soybean meal11.089.07.329.10.844.07.8 Sunflower seed15.194.914.318.038.619.74.2 Fish meal8.791.32.30.58.455.624.5 Bone meal6.193.9--5.829.454.9 Milk87.612.44.7-3.63.38.0

5. Department of Animal and Aquatic Science, CMU 5 Water DM CF NFE EE CP Ash Dry matter basis (%) Baby corn husk010010.13.94.721.360.0 Corn grain01008.94.42.85.078.9 Rice bran 010014.119.39.511.046.1 Soybean meal 010049.40.98.88.232.7 Sunflower seed 010020.840.74.415.119.0 Fish meal 010060.99.226.82.50.6 Bone meal 010031.36.258.5-- Milk 010026.629.06.5-37.9 Composition of some feedstuffs & animal products

6. Department of Animal and Aquatic Science, CMU 6 Factors Affecting Forage Nutritive Value Maturity Age (Weeks) Digestibi lity Crude Protein ADFLignin 46018294 55918304 65616315 75313336

7. Department of Animal and Aquatic Science, CMU 7 Chemical compositopn of napier grass at diferent stage of maturity (DM basis) AgeyieldDMCPNDFLignin (day) (kgDM) % %DM 301,674.6 b 21.412.0 a 64.0 b 2.65 b 40 1,747.8 a 22.311.2 b 64.4 b 2.80 b 50 1,628.0 b 23.59.4 c 65.9 a 2.97 a

8. Department of Animal and Aquatic Science, CMU 8 Leaf blades, leaf sheaths and stems MeanRangeVarietal effect Leaf blade NDF (% OM)59.957.7-63.0** DNDF (%)60.155.7-62.2*** Lignin (% OM)3.93.5-4.5** Leaf sheath NDF (% OM)69.265.5-70.8** DNDF (%)42.438.1-44.9*** Lignin (% OM)5.14.8-5.9NS Stem NDF (% OM)76.272.5-79.6** DNDF (%)30.727.6-35.2* Lignin (% OM)8.77.6-9.7***

9. Department of Animal and Aquatic Science, CMU 9 Body weight Water Fat Protein Ash (kg) (%) New born cattle3274.42.519.04.1 Weanling calf20569.09.018.04.0 Feeder steer29560.318.017.24.5 Very fat steer68240.041.016.03.0 Breeding cow50060.018.017.54.5 Body composition of cattle at different weight and age, ingesta free (empty) basis