National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present study was undertaken to the estimate inbreeding coefficient in Corriedale sheep under different agro-climatic conditions of Jammu and Kashmir. The pedigree file of 6,874 records of Corriedale sheep, maintained at Mountain Research Centre for Sheep & Goat (MRCSG), F.V.Sc & A.H, SKUAST-K Shuhama, for a period of 49 years (1969-2017) was used to calculate inbreeding coefficients. The individual inbreeding coefficients were measured by Wright’s formula and was computed from the pedigree containing 6,874 animals using CFC software package and expressed as percentage. Average inbreeding coefficient (F) of the lambs generally increased over the periods. The mean inbreeding coefficient (F), proportion of population inbred (per cent), for Corriedale sheep were 18.3 and 43.3 respectively. During initial periods, inbreeding coefficient was 9.67 and it increased upto 27.7 during the last period. During the initial period (P1, (1969-1975) about 12.2% were inbred and gradually increased upto 80.19% during the last period (P7, (2011-2017). The coefficient of inbreeding ranged from 0 to 37.5 in inbred lambs. It was concluded that by avoiding the mating between related individuals and by the introduction of breeding rams, unnecessary and undesirable increase of inbreeding in the flock can be minimized.
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