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FMass Balance of Mrogen Loading <br /> Nitrate loading calculations for properties: <br /> Definition:Au is the abbreviation for animal unit.One animal unit represents 1000 lbs.of body weight. <br /> Nitrogen content of manure from dairy cattle: <br /> Classification of cow: Lbs.N per Au <br /> FLactating cows 56 lbs. <br /> Dry cows .45 lbs. <br /> Bred Heifers 45 lbs. <br /> 'Heifers .45 lbs. <br /> Calves .45 lbs. <br /> FBaby calves .45 lbs. <br /> Animal units for typical Holstein dairy cattle,generally accepted by the State Water Quality Control Board: <br /> Lactating cow 1.4 Au's <br /> FDry cows 1.12 Au's <br /> Bred Heifers 1.02 Au's <br /> Pfeifer(1 yr.-bred) 1.02 Au's <br /> Calves(3 mo.-1 yr.) .49 Au's <br /> Baby calves .29 Au's <br /> FNItrogen Production Calculations <br /> Projected animal units: Animals A.U.'s each A.U.'s <br /> Lactating cows 1310 1.4 1834 <br /> Dry cows 213 1.12 239 <br /> Bred Heifers 692 1.02 706 <br /> `Heifers(1 yr.-breeding) 231 1.02 235 <br /> Calves 692 0.49 339 <br /> FBaby calves 231 0.29 67 <br /> ,flitiragen Production <br /> Flushed Freestalls <br /> Type of Animal A.U.'s Ib of Nlday Nlday <br /> FLactating cows 1,834 0.56 1,027 <br /> Dry cows 0 0.45 0 <br /> red Heifers 706 0.45 318 <br /> Heifers(1 yr.-breeding) 235 0.45 106 <br /> Calves 339 0.45 153 <br /> Baby calves 67 0.45 30 <br /> otal lbs.N per day before losses 1,633 <br /> Flushed Feed Lane <br /> Lactating cows <br /> 4p _ 'tJ' 0.56 0 <br /> ry cows pi 0.45 0 <br /> Bred Heifers t � t7 0.45 0 <br /> Heifers{1 yr.-breeding) fp" 0.45 0 <br /> Calves [7% 0.45 0 <br /> Bab",calves 0.46 0 <br /> i <br /> Total lbs.N per day before losses 0 <br /> Scraped Corral <br /> actating cows (3' 0.56 0 <br /> Dry cows 29 0.45 107 <br /> Bred Heifers Qi 0.45 0 <br /> Heifers(1 yr.-breeding) 0 0.45 fl <br /> �� <br /> Calves �. ,� 5��a, 0.45 0 <br /> Baby calves0.45 0 <br /> Total lbs.N per day before losses 107 <br /> F <br /> �i <br />