作者: J.K. Miller
DOI: 10.3168/JDS.S0022-0302(72)85649-2
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摘要: Abstract A variety of methods useful in studies mineral element utilization by cattle have been briefly compared and the advantages disadvantages each discussed. These include regression radioisotope procedures for estimating availability requirements, vitro vivo techniques identifying gastrointestinal sites absorption, assessment animal's status.