Mathematical equations to describe lactation curves for Holstein-Friesian cows in New South Wales

Australian Journal of Agricultural Research

Volumn 50, Issue 3, 1999, Pages 431-440

  Tozer, P R ^a   Huffaker, R G ^b  

^a PENNSYLVANIA STATE UNIVERSITY   (United States)

^b WASHINGTON STATE UNIVERSITY   (United States)

Author keywords

Mathematical functions

Indexed keywords

BOS TAURUS; FRIESIA; VERTEBRATA;

EID: 0032959350     PISSN: 00049409     EISSN: None     Source Type: Journal    
DOI: 10.1071/A98064     Document Type: Article

References (19)

1. ABARE (1995). 'Farm Management and Technology in the Australian Dairy Industry 1993-94.' (Dairy Research and Development Corporation: Melbourne.)
2. Anon, (1996). Cow nutrition. In 'Australian Dairy'. (Ed. S. Schelling.) pp. 161-90. (Morescope: Melbourne.)
3. Batra, T. R. (1986). Comparison of two mathematical models in fitting lactation curves for pureline and crossline dairy cows. Canadian Journal of Animal Science 66, 405-14.
4. Everett, R. W., Taylor, J. F, and Hammond, K. (1982). Mixed model estimation of age and month of calving adjustment factors for milk and butterfat yields of New South Wales dairy cattle. Australian Journal of Agricultural Research 33, 731-41.
5. Freeze, B. S., and Richards, T. J. (1992). Lactation curve estimation for use in economic optimization models of the dairy industry. Journal of Dairy Science 75, 2984-9.
6. Goodall, E. A., and McMurray, C. H. (1984). An integration of mathematical models for feeding and lactation with reproductive performance of the dairy cow. Animal Production 38, 341-9
7. Grant, R., and Keown, J. (1995). Managing dairy cattle for cow comfort and maximum intake. University of Nebraska, Extension Publication, G95-1256-A. Lincoln.
8. Greene, W. H. (1993). 'Econometric Analysis.' 2nd Edn. (MacMillan: New York.)
9. Grossman, M., and Koops, W. J. (1988). Multiphasic analysis of lactation curves in dairy cattle. Journal of Dairy Science 71, 1598-608.
10. Kellaway, R., and Porta, S. (1993). 'Feeding Concentrates: Supplements for Dairy Cows.' (Dairy Research and Development Corporation: Melbourne.)
11. Pindyck, R. S., and Rubinfeld, D. L. (1981). 'Econometric Models and Economic Forecasts.' 2nd Edn. (McGraw-Hill: New York.)
12. Rook, A. J., France, J., and Dhanoa, M. S. (1993). On the mathematical description of lactation curves. Journal of Agricultural Science 121, 97-102.
13. SAS Institute Inc. (1985). 'SAS User's Guide: Statistics.' Version 5 Edition. (SAS Institute Inc.: Cary, NC.)
14. Scott, T. A., Yandell, B., Zepeda, L., Shaver, R. D., and Smith, T. R. (1996). Use of lactation curves for analysis of milk production data. Journal of Dairy Science 79, 1885-94.
15. Stockdale, C. R. (1997). Influence of energy and protein supplements on the productivity of dairy cows grazing white clover swards in spring. Australian Journal of Experimental Agriculture 37, 151-7.
16. Wood, P. D. P. (1967). Algebraic model of the lactation curve in cattle. Nature 216, 164-5.
17. Wood, P. D. P. (1969). Factors affecting the shape of the lactation curve in cattle. Animal Production 11, 307-16.
18. Wood, P. D. P. (1970). The relationship between the month of calving and milk production. Animal Production 12, 253-9.
19. Wood, P. D. P. (1980). A note on the lactation curves of some high-yielding British Friesian cows. Animal Production 30, 299-302