01297nam a2200205 a 4500008004100000020002700041020003000068082004900098100002000147245004900167250001400216260002300230300001300253520068200266650003300948650003500981650003001016650002101046700002401067160125s2005 xxu eng d a0851990134 (hardcover) a9780851990132 (hardcover) a636.20852 Pfeffer 20035 1st 2005 A.Nutrition1 aPfeffer, Ernst.10aNitrogen and Phosphorus Nutrition of Cattle  aFirst ed. aUK :bCABI,c2005. a304 p. ; aThere are tremendous benefits to feeding ruminants nitrogen and phosphorus supplements, in terms of milk production and productivity. However what goes in, must also come out. Nitrogen and phosphorus excretions from dairy cattle are a major environmental pollutant. This book describes the latest knowledge in nitrogen and phosphorus nutrition of cattle including requirements, ruminal and total tract metabolism, possibilities of increasing the efficiency of nitrogen utilization and reducing nitrogen and phosphorus excretions from dairy and beef operations. It also includes aspects of the effects of dietary nitrogen and phosphorus on the reproductive efficiency of cattle. aNitrogen in animal nutrition aPhosphorus in animal nutrition aCattle--Feeding and feeds aAnimal Nutrition1 aHristov, Alexander.