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Factors affecting the productive herd life, longevity and lifetime calf production traits in Frieswal cattle

Indian Agricultural Research Journals

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Title Factors affecting the productive herd life, longevity and lifetime calf production traits in Frieswal cattle
 
Creator Atrey, R K
Singh, Harpal
Sharma, R K
 
Subject Cattle; Frieswal cattle; Longevity; Milk yield; Productive herd life; Selective value
 
Description The present investigation was undertaken on 953 Friswal cows maintained at military dairy farm Meerut over 16 years (1985-2000) to determine the effect of genetic and non-genetic factors on productive herd life, longevity and life time calf production traits. The study revealed that averages of productive herd life (PHL), longevity, total calves born, total normal calves born, total female calves born and selective value were 375±0.09,6.20±0.09 years. 2.91±0.07,2.57±0.06, 1.23±0.04 and 0.92±0.04 respectively. The selective value of 0.92 indicated that each Frieswal cow did not replace herself in the herd. The period of birth, first lactation milk yield (PLMY) and sire ofcow have highly significant effect on all the above traits, whereas age at first calving (AFC) had only significant effect on PHL and total calves born.
 
Publisher Directorate of Knowledge Management in Agriculture
 
Date 2005-10-05
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/8283
 
Source The Indian Journal of Animal Sciences; Vol 75, No 10 (2005)
0367-8318
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/8283/3287
 
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