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Genetic Evaluation of Bandur Sheep under field Conditions

KrishiKosh

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Title Genetic Evaluation of Bandur Sheep under field Conditions
 
Creator VASUNDARA DEVI M.
 
Contributor Jayashankar M.R.
 
Subject livestock, breeds (animals), body weight, sexual reproduction, biological phenomena, genetics, meat, productivity, heritability, biological development
 
Description The present study was undertaken, to compile information on morphological traits of Bandur sheep in the home tract, to assess performance of growth and reproductive traits, to predict body weight at six and twelve months of age based on body measurements and to estimate heritabilities of body weights. Data were collected from 3210 sheep sheep from selected taluks of Mandya, Mysore, Bangalore (Rural) and Kolar districts of Karnataka. The breed morphological characters noted were, coat colour is predominantly white colour with light brown face, convex fore head, wattles were absent in majority of sheep, with medium length tail, ears were pendulous while horns were absent in Bandur sheep . The overall means obtained for body weight at three , six, nine, twelve month and adults was 4.79 ± 0.09, 11.40 ± 0.13 , 15.86 ± 0.07 , 26.13 ± 0.11 and 28.28 ± 0.04 kg respectively. The overall mean chest girth of the sheep at 3,6,9,12 month and adult age groups were 45.21 ± 1.22, 56.89 ± 0.40, 71.40 ± 0.25, 77.65 ± 0.18 and 75.98 ± 0.16 cm respectively. The mean body length of pooled data for 3, 6, 9, 12 month and adult sheep were 41.58 ± 0.49, 51.20 ± 0.77, 53.18 ± 0.24, 61.74 ± 0.95 and 63.64 ± 0.13 cm respectively. The mean height at wither for pooled data in the five age groups were 42.66 ± 0.54, 45.9 ± 0.47, 48.52 ± 0.08, 52.20 ± 0.11 and 53.90 ± 0.10 cm respectively. The overall mean age at first lambing was 642.14 ± 2.95 days and the overall lambing interval was 249.66 ± 0.56 days. The heritability estimates of body weight at three, six , nine and twelve months were 0.21 ± 0.09, 0.82 ± 0.23, 0.19 ± 0.07 and 0.72 ± 0.06, respectively. The correlations of body weights at six and twelve months were positive and highly significant (P
 
Date 2016-06-17T11:03:26Z
2016-06-17T11:03:26Z
2013-05-10
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67510
 
Language en
 
Format application/pdf
 
Publisher Karnataka Veterinary, Animal and Fisheries Sciences University, Bidar