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Selective Genetic Studies on Local Goats of Karnataka

KrishiKosh

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Title Selective Genetic Studies on Local Goats of Karnataka
 
Creator Jayashree R.
 
Contributor Jayashankar M.R.
 
Subject livestock, breeds (animals), genetics, land management, biological phenomena, alleles, chromosomes, genetic structures, locus, body weight
 
Description A study was conducted with the aim to characterize indigenous goats of Southern Karnataka in the four agro-climatic zones viz., Eastern dry zone (EDZ), Central dry zone (CDZ), Southern dry zone (SDZ) and Southern transition zone (STZ). The mean values for the morphometric traits like horn length, ear length, tail length, body length, height at withers, chest girth, paunch girth, body width and body weight were 4.29 ± 0.12 cm, 12.78 ± 0.07 cm, 12.74 ± 0.07 cm, 52.38 ± 0.43 cm, 59.97 ± 0.51 cm, 60.92 ± 0.50 cm, 60.78 ± 0.49 cm, 9.82 ± 0.07 cm and 22.06 ± 0.34 kg, respectively. The average age at maturity, gestation period, average litter size, age at first kidding, lactation period and kidding interval, age at weaning and frequency of multiple birth were 7.80 ± 0.13 (months), 151.53 ± 0.27 (days), 1.67 ± 5.08 (number), 16.94 ± 0.24 (months), 5.08 ± 0.08 (months), 9.53 ± 1.04 (months), 4.44 ± 0.09 (months), 46.97 (%), respectively.

The modal chromosome number (2n) was 60 with 29 pairs of acrocentric autosomes and a longest acrocentric X- chromosome and the smallest metacentric Y-chromosome.

A total of 158 alleles were observed from 23 microsatellite markers. The number of observed and expected number of alleles ranged from 3 to 13 and from 2.25 to 8.40, respectively. The mean observed heterozygosity (Ho) was 0.4698 ± 0.2214 [range 0 (ETH225) to 0.8462 (ILSTS034)] and the mean expected heterozygosity (He) was 0.7471± 0.1098 [range 0.5656 (ILSTS005) to 0.9138 (SRCRSP 8)]. Fourteen loci showed significant deviation from Hardy - Weinberg equilibrium (P
 
Date 2016-06-17T10:58:05Z
2016-06-17T10:58:05Z
2014-05-01
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67509
 
Language en
 
Format application/pdf
 
Publisher Karnataka Veterinary, Animal and Fisheries Sciences University, Bidar