Laserfiche WebLink
j <br /> i <br /> J f <br /> { <br /> l <br /> Mass Balance of Nitrogen Loading <br /> Phase IV <br /> a <br /> Nitrate loading calculations for existing properties: <br /> Definitions: <br /> c Denitification is the transformation of nitrates or nitrites or nitrous oxide gas occurring <br /> under anaerobic conditions. <br /> ro Aerobic is the growing or occurring only in the presence of molecular oxygen.. Effluent <br /> contains enough dissolved oxygen to maintain aerobic bacteria. <br /> o Au is the abbreviation for animal unit. One animal unit represents 1000 lbs. of live body <br /> weight. <br /> Nitrogen content of manure from dairy cattle: <br /> t <br /> ANIMAL CLASSIFICATION LBS. N]!Au <br /> Lactating (milking) ,56 <br /> D & Bred Heifer .45 <br /> Heifer 1 ear- bred . 45 <br /> Calves 3 months — 1 ear 45 <br /> Baby Calves,(up to 3 months . 45 <br /> i <br /> 1 <br /> 's Animal units for typical Holstein dairy cattle, generally accepted by the State Water <br /> Quality Control Board: <br /> ANIMAL CLASSIFICATION IANIMAL <br /> .� <br /> UNIT Au VALUEs <br /> Lactating milkin 1.4 <br /> D Cows 1.12 <br /> Bred Heifer .02 <br /> Heifer 1 ear- bred 1.02 <br /> Calves 3 months — 1 ear .49 <br /> Baby Calves (up to 3 months .29 <br /> a <br /> 1 <br /> 1 <br /> See Page 47 for References and Bibliography <br /> ©Western Dairy Design Associates,Inc.2003 <br /> Page 25 <br /> i <br />