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Journal of Dairy Science Vol. 64 No. 2 350-352
© 1981 by American Dairy Science Association ®
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Smoothed Age-Season Adjustment Factors for Dairy Goat Lactation Milk and Fat Records

G. R. Wiggans

Animal Improvement Programs Laboratory, Agricultural Research, Science and Education Administration, US Department of Agriculture, Beltsville, MD 20705

ABSTRACT

Age-season adjustment factors were smoothed by fitting a function with four coefficients to reciprocals of the factors for five breeds of dairy goats. The function consisted of two joined quadratic curves, one for 10 through 36 mo of age at kidding and the other for greater than 36 mo. Both the function and its derivative were continuous at 36 mo.






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Copyright © 1981 by the American Dairy Science Association ®.