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R esearch
(Published
online:
29-12-2015)
14.
Principal component analysis of biometric
traits to reveal body confirmation in local hill cattle of
Himalayan state of Himachal Pradesh, India -
Deepak Verma, Varun Sankhyan, Sanjeet Katoch and Yash Pal Thakur
Veterinary World, 8(12): 1453-1457
doi:
10.14202/vetworld.2015.1453-1457
Deepak Verma:
Department of Animal Genetics and Breeding, College of
Veterinary and Animal Sciences, Chaudhary Sarwan Kumar Himachal
Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh,
India; dvcom333@gmail.com
Varun Sankhyan:
Department of Animal Genetics and Breeding, College of
Veterinary and Animal Sciences, Chaudhary Sarwan Kumar Himachal
Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh,
India; sankhyan@gmail.com
Sanjeet Katoch:
Department of Animal Genetics and Breeding, College of
Veterinary and Animal Sciences, Chaudhary Sarwan Kumar Himachal
Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh,
India; skatoch@gmail.com
Yash Pal Thakur:
Department of Animal Genetics and Breeding, College of
Veterinary and Animal Sciences, Chaudhary Sarwan Kumar Himachal
Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh,
India; ypthakur@rediffmail.com
Received: 23-08-2015, Revised: 18-11-2015, Accepted: 25-11-2015,
Published online: 29-12-2015
Corresponding author:
Varun Sankhyan, e-mail: sankhyan@gmail.com
Citation:
Verma D, Sankhyan V, Katoch S, Thakur YP (2015) Principal
component analysis of biometric traits to reveal body
confirmation in local hill cattle of Himalayan state of
Himachal Pradesh, India,
Veterinary World 8(12):
1453-1457.
Abstract
Aim:
In the present study, biometric traits (body length [BL], heart
girth [HG], paunch girth (PG), forelimb length (FLL), hind limb
length (HLL), face length, forehead width, forehead length,
height at hump, hump length (HL), hook to hook distance, pin to
pin distance, tail length (TL), TL up to switch, horn length,
horn circumference, and ear length were studied in 218 adult
hill cattle of Himachal Pradesh for phenotypic characterization.
Materials and Methods:
Morphological and biometrical observations were recorded on 218
hill cattle randomly selected from different districts within
the breeding tract. Multivariate statistics and principal
component analysis are used to account for the maximum portion
of variation present in the original set of variables with a
minimum number of composite variables through Statistical
software, SAS 9.2.
Result:
Five components were extracted which accounted for 65.9% of
variance. The first component explained general body
confirmation and explained 34.7% variation. It was represented
by significant loading for BL, HG, PG, FLL, and HLL. Communality
estimate ranged from 0.41 (HL) to 0.88 (TL). Second, third,
fourth, and fifth component had a high loading for tail
characteristics, horn characteristics, facial biometrics, and
rear body, respectively.
Conclusion:
The result of component analysis of biometric traits suggested
that indigenous hill cattle of Himachal Pradesh are small and
compact size cattle with a medium hump, horizontally placed
short ears, and a long tail. The study also revealed that
factors extracted from the present investigation could be used
in breeding programs with sufficient reduction in the number of
biometric traits to be recorded to explain the body
confirmation.
Keywords:
biometrical traits, hill cattle, phenotypic characterization,
principal component analysis.
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