The practical application of age conversion factors to dairy cattle production (butterfat) records

被引:5
作者
Ward, AH
Campbell, JT
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D O I
10.1017/S0021859600050942
中图分类号
S [农业科学];
学科分类号
09 ;
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页码:509 / 522
页数:14
相关论文
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[1]   Factors affecting the yield and qualtty of milk. I. The age of the cow. [J].
Kay, RR ;
M'Candlish, AC .
JOURNAL OF AGRICULTURAL SCIENCE, 1929, 19 :342-372
[2]  
SANDERS HG, 1928, J AGR SCI, V18, P61
[3]  
TUFF P, 1931, 9 WORLD DAIRY C REP, P151
[4]  
1933, REP ILL AGR EXP STA