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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2017)
[Effective from January 1, 2017]
For more details click here

ICV 2015: 85.95
Index Copernicus ICI Journals Master List 2015 - IJCMAS--ICV 2015: 85.95
For more details click here
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
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Index Copernicus ICV 2015: 85.95
NAAS RATING 2017: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(3): 832-836
DOI: https://doi.org/10.20546/ijcmas.2017.603.098


Genetic Analysis of Growth Rates of Nellore Brown Sheep
Vishnu Vardhan Reddy1*, D. Sreenivas2, M. Gnanaprakash3 and Ch. Harikrishna4
1Teaching Assistant, Department of Animal Genetics and Breeding, college of veterinary science, SVVU, Proddatur, Kadapa district, Andhrapradesh-516360
2Professor, Department of Animal Genetics and Breeding, College of Veterinary Science, P.V. Narsimha Rao Telangana Veterinary University, Korutla, Karimnagar, Telangana-505326
3Professor&Officer-in-charge, Poultry Research Station, College of Veterinary Science,P.V. Narsimha Rao TelanganaVeterinary University, Rajendranagar, Hyderabad-500030
4Sr. Scientist & Head, Livestock Research Station, P.V. Narsimha Rao TelanganaVeterinary University, Mamnoor, Warangal, Telangana – 506166
*Corresponding author
Abstract:

The data on body weights at birth, 3, 6, 9 and 12 months of age recorded on 519 Nellore Brown lambs born during 2009 to 2013 maintained at Livestock Research Station, Mamnoor, Warangal district which is a constituent of Sri P.V. Narsimha Rao Telangana Veterinary University, Hyderabad, were utilized for the present study. The overall least squares means for average daily gains during 0-3(ADG1), 3-6(ADG2), 6-9(ADG3) and 9-12(ADG4) months of ages were 109.90±0.28, 84.80±0.23, 45.53 ± 0.20 and 31.29 ± 0.25 g, respectively. The growth rate decreased as the age advanced and was the lowest during 9-12 months. They ear of birth had highly significant (P≤0.01) effect on the average daily gains at 0-3 and 9-12 months of age. The effect of season of birth was non-significant (P≤0.05) on the average daily gains at all ages studied. Males recorded significantly (P≤0.01) higher average daily gains than the females at all ages studied. The estimates of heritabilities of ADGs ranged from 0.02±0.06 to 0.20±0.11.The estimates of heritabilities for ADGs indicated that non genetic factors play an important role and better feeding and management can help to improve these traits.


Keywords: Nellore Brown sheep, Average daily gain, Non-genetic factors, Heritability.
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How to cite this article:

D. Vishnu Vardhan Reddy, D. Sreenivas, M. Gnanaprakash, Ch. Harikrishna. 2017. Genetic Analysis of Growth Rates of Nellore Brown Sheep.Int.J.Curr.Microbiol.App.Sci. 6(3): 832-836. doi: https://doi.org/10.20546/ijcmas.2017.603.098