01015nam a2200193 a 450000100080000000500110000800800410001902000180006010000150007824501050009326000370019830000100023552004890024565000210073465000190075565000130077465300150078770000190080210479522008-03-13 2005 bl uuuu 00u1 u #d a0-85199-013-41 aPFEFFER, E aNitrogen and phosphorus nutrition of cattlebreducing the environmental impact of catlle operations. aCambridge: CABI Publishingc2005 a288p. aInteractions between Cattle and the Environment: a General Introduction; Nitrogen Requirements of Cattle; Nitrogen Metabolism in the RUlDen; Factors Affecting the Efficiency of Nitrogen Utilization in the RUlDen; Whole-anilnal Nitrogen Balance in Cattle Phosphorus Metabolism in the RUlDen; Phosphorus Metabolism in Rwninants and Requirements of Cattle; Etfects ofDietary Phosphorus and Nitrogen on Cattle Reproduction; lnproving the EfficielicY cifNutrient Use on Cattle Operations. aanimal nutrition acattle feeding anitrogen aPhosphurus1 aHRISTOV, A. N.