volume 36 issue 2 (july to december 2002) : 122· 124
IDENTIFICATION OF TYPE INDICATORS FOR PREDICTION OF PRODUCTION EFFICIENCY IN INDIAN CATTLE
1College of Agriculture,
CCS Haryana Agricultural University Campus, Kaul (Kaithal) - 136 021,lndia
Published In
Indian Journal of Animal Research
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volume 36 issue 2 (july to december 2002) : 122· 124
IDENTIFICATION OF TYPE INDICATORS FOR PREDICTION OF PRODUCTION EFFICIENCY IN INDIAN CATTLE
1College of Agriculture,
CCS Haryana Agricultural University Campus, Kaul (Kaithal) - 136 021,lndia
ABSTRACT
Genetic improvement of indigenous breeds of cattle through selective breeding is an important aspect for conservation and propagation of valuable germplasm. Hariana, Sahiwal and Tharparkar cows maintained at Government Livestock Farm, Hisar were scored for 13 linear functional type traits on a 50 points scale to identify the indicators for early selection. The association of linear type traits with production efficiency (PE) indicated medium to high phenotypic (rp = −0.23±0.09 to 0.69±0.05) and genetic correlations of PE with most of the udder traits. Multiple regression of PE on linear type traits resulted in multiple correlation of 55.11% in Hariana, 35.99% in Sahiwal and 43.88% in Tharparkar breed. The stepwise regression analysis revealed that few form and udder traits also accounted for cow to cow variation in PE of these breeds. The curves depicting optimum scores of type traits for maximum PE inferred that milk production per unit of time will be more in cows having high scores for stature, chest and body, dairy character, rear legs, rump width, rear udder width and height and suspensory ligament; low scores for fore udder attachment, teat placement and udder depth; and intermediate scores for foot shape and pelvic angle.
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In this Article
APC
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Published In
Indian Journal of Animal Research