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1 Serjsen K, "calf and heifer rearing:Principles of rearing the modern dairy heifer from calf to calving" Ed Garnsworthy PC. Nottingham University Press 237-251, 2005
2 Tozer PR, "What affects the costs of raising replacement dairy heifers: A multiple-component analysis" 84 : 1836-1844, 2001
3 Heinrichs AJ, "The national dairy heifer evaluation project: A profile of heifer management practices in the United States" 77 : 1548-1555, 1994
4 Bayram B, "The effect of average daily gain and age at first calving on reproductive and milk production traits of Brown Swiss and Holstein Friesian cattle" 15 : 453-462, 2009
5 Ojango JMK, "Survival analysis of factors affecting culling early in the productive life of Holstein-Friesian cattle in Kenya" 92 : 317-322, 2005
6 Ducrocq V, "Statistical analysis of length of productive life for dairy cows of the Normande breed" 77 : 855-866, 1994
7 Curran RD, "Relationships between age at first calving;herd management criteria; and lifetime milk, fat, and protein production in Holstein cattle" 29 : 1-9, 2013
8 Gill GS, "Relationship of age at first calving, days open, days dry, and herdlife to a profit function for dairy cattle" 59 : 1131-1139, 1976
9 Bielfeldt JC, "Longevity of Swiss Brown cattle in different housing systems in Switzerland" 101 : 134-141, 2006
10 Vukasinovic N, "Implementation of a routine genetic evaluation for longevity based on survival analysis techniques in dairy cattle populations in Switizerland" 84 : 2073-2080, 2001
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