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Effectiveness of additive and multiplicative age correction factors in Karan Fries cattle

Indian Agricultural Research Journals

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Title Effectiveness of additive and multiplicative age correction factors in Karan Fries cattle
 
Creator Gandhi, R S
Singh, Avtar
 
Subject Additive age correction factors; First lactation milk yield; Karan Fries cattle; Multiplicative age correction factors
 
Description A total of 793 first lactation records (793) of Karan Fries cows, progeny of 69 sires, spread over a period of 25 years (1971-1995) were analyzed to develop additive and multiplicative age correction factors for 305-day or less milk yield. Both the age correction factors were equally effective on the basis of mean, F-ratio and R² value; while multiplicative age correction factors were more effective in retaining similar CV (%) for all subclasses of age groups as that of uncorrected data and reducing the residual variance as compared to uncorrected or additively corrected data. It seemed that multiplicative age correction factors were more appropriate for this set of data.
 
Publisher Directorate of Knowledge Management in Agriculture
 
Contributor —
 
Date 2012-07-05
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
—
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/21223
 
Source The Indian Journal of Animal Sciences; Vol 69, No 9 (1999)
0367-8318
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/21223/10711
 
Rights Copyright (c) 2014 The Indian Journal of Animal Sciences