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Within-Herd Effects of Age at Test Day and Lactation Stage on Test-Day Yields

✍ Scribed by J. Bormann; G.R. Wiggans; T. Druet; N. Gengler

Book ID
117975848
Publisher
American Dairy Science Association
Year
2003
Tongue
English
Weight
741 KB
Volume
86
Category
Article
ISSN
0022-0302

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The object of this study was to develop a method for the adjustment of test-day milk, fat and protein yield for age at calving, stage of lactation, and month of calving. Test-day records of 14 275 purebred Dutch Friesians were analysed by generalized least squares, (GLS). Functions of days in lactat