Effect of Some Non-genetic Factors and Fec-B Gene Introgression on Performance Traits of Kashmir Merino Sheep

Rather, Mohd Ashraf; Magray, Suhail Nabi; Ahanger, Showkat Ahamad; Baba, Mohmmad Ashraf; Shah, M Maroof; Rather, Tenveer Ahmad; Farooq, Younis; Abbas, Qayim

doi:10.20546/ijcmas.2019.808.050

Cited by 6 publications

(2 citation statements)

References 11 publications

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“…Some other studies also reported a significant influence of AOD on pre-weaning growth traits, which is in line with present findings [ 9 , 32 , 34 , 40 , 41 ]. The non-significant effect of AOD on post-weaning traits observed herein was also in line with previous studies [ 9 , 33 , 42 , 43 , 44 ]. Contrary to this, Rahimi et al [ 9 ], Naderi [ 41 ] and Bahreini Behzadi et al [ 36 ] observed a significant effect of AOD on WT180 and WT270 in Makuie and Kermani sheep, respectively.…”

Section: Resultssupporting

confidence: 93%

Environmental Effects and Genetic Parameters for Growth Traits of Lohi Sheep

Sharif

Ali

Dawood

et al. 2022

Animals

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Estimating genetic parameters for growth traits is crucial to plan breeding strategies for improving meat production in indigenous sheep breeds. The study first tested the effects of environmental and maternal effects on five growth traits, including birth weight (BWT), weight at 120 days (WT120), weight at 180 days (WT180), weight at 270 days (WT270) and weight at 365 days of age (WT365) and then estimated genetic parameters for these traits using data obtained in 1215 Lohi sheep. The effects of factors, including year (YOB), season (SOB) and type of birth (TOB), age of dam (AOD) and sex on growth traits of Lohi sheep, were examined using analysis of variance (ANOVA) in R software. Sex, TOB and YOB significantly affected all studied traits. The estimates of direct and maternal heritability for BWT and WT120 were 0.15 ± 0.08 and 0.20 ± 0.06, and 0.45 ± 0.16, 0.21 ± 0.08, respectively. The direct heritability estimates for WT180, WT270 and WT365 were 0.20 ± 0.07, 0.21 ± 0.07 and 0.19 ± 0.08, respectively. Due to the high heritability estimate obtained for WT120 compared to other studied traits, and its strong genetic correlation (>0.9) with post-weaning growth traits, it is recommended that selection must be practiced on WT120 to improve the growth performance of Lohi sheep. The results could be used for the development of genetic/genomic selection programs aiming to improve the production performance of the Lohi sheep.

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Section: Resultssupporting

confidence: 93%

Environmental Effects and Genetic Parameters for Growth Traits of Lohi Sheep

Sharif

Ali

Dawood

et al. 2022

Animals

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“…The averages twinning percentage of 5.2% and 3.55% in Mengali Sheep was observed at two different research stations (Tariq et al, 2011). In Kashmir Merino sheep and Fec-B introgressed Kashmir Merino sheep, the reported litter size was 1.08±0.03 and 1.40±0.04, respectively (Rather et al, 2019). In another study of Kashmir Merino sheep, overall lambing percentage was 91.48% with 1-4% twining (Want et al, 2020).…”

Section: Resultsmentioning

confidence: 98%

Reproduction Performance of Kashmir Merino Sheep at an Organized Farm of Kashmir

Ahamad

Rather

Bashir

et al. 2022

BKAP

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Background: Kashmir Merino sheep breed is being developed by croosing native sheep breeds like poonchi, bakerwal and gadi with exotic sheep breeds like Australian Merino Rams. Currently Kashmir Merino sheep breed is being maintained at the 8 Government sheep breeding farms of Kashmir Valley. Methods: The data pertaining to Kashmir Merino sheep ranging over 18 years (2001 to 2010 and 2012 to 2019) was analysed using descriptive stastics to estimate lambing and twining percentage, incidence of abortion, dystocia and still births. Data was obtained from lambing records of Kashmir Merino sheep, maintained at Sheep Breeding Farm Kralpathri. Result: In present investigation, overall percentage of lambing and twining was 82.49% and 0.33%, respectively and incidence of rate of abortions, still births and dystocia of 1.29%, 1.20% and 0.91%, respectively were observed in Kashmir Merino sheep. It was observed that with increase incidence of still births, dystocia and abortions, there is decrease in lambing percentage whereas incidence of twining percentage increases lambing percentage significantly. The lambing percentage can be increase by improving management and Fec-B intrograssion in Kashmir Merino sheep.

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