| This paper reviewed existing lactation models which are mainly applied to dairy cows. There are many related papers; in 50 papers, 90 lactation curves are presented. The most frequently used model is Wood’s (1967), which was quoted in 75 papers. In general, the earlier the year of the model presented in the paper, the higher its frequency of quotation. Wood’s (1967) model was followed by other models from Brody et al. (1923), Sikka (1950), Nelder (1966), Dave (1971), Cobby et al. (1978), Ali et al. (1987), Wilmink (1987), and Grossman et al. (1988); these models were quoted 9, 8, 17, 11, 9, 12, 18, and 11 times, respectively. The classic models, which have been mainly described as the function of time, have less room for improvement and have become... |
