Reproductive Performance and Productivity of Local and Dorper X Local Crossbred Ewes Under Community-Based Management System, Ethiopia

Abebe, Ayele Mamo; Berhane, Gebreyohanes; Getachew, Tesfaye; Gizaw, Solomon; Haile, Aynalem

doi:10.2139/ssrn.4367586

Cited by 1 publication

(5 citation statements)

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“…Likewise, the WWT of Dorper × Tumele sheep in this study is higher than the reports of several studies ( Mekuriaw et al, 2013 ; Tilahun et al, 2016 ; Gemiyo et al, 2017 ; Amare et al, 2018 ) for indigenous and crossbred sheep. The preweaning gain of Dorper × Tumele sheep observed in this study is lower than the value reported for pure Dorper (142.93 g day −1 ), but higher than the value reported for 50% Dorper × Menz sheep (106.24 g day −1 ) under semi-intensive management ( Abebe et al, 2016 ) and also higher than the result (99.8 ± 2.4 g day −1 ) reported for Dorper × Adilo sheep by Gemiyo et al (2017) . This indicates that the pre-weaning growth performance of Dorper × Tumele sheep was better than other crossbred and non-improved indigenous sheep breeds.…”

Section: Discussioncontrasting

confidence: 86%

“…The BWT of Dorper × indigenous sheep found in the current study is higher than the reports of several scholars ( Belete et al, 2015 ; Abebe et al, 2016 ; Gemiyo et al, 2017 ) for Dorper crossbred sheep. Likewise, the WWT of Dorper × Tumele sheep in this study is higher than the reports of several studies ( Mekuriaw et al, 2013 ; Tilahun et al, 2016 ; Gemiyo et al, 2017 ; Amare et al, 2018 ) for indigenous and crossbred sheep.…”

Section: Discussioncontrasting

confidence: 82%

“…The SMWT (market weight) of Dorper × Tumele sheep under a smallholder management system was higher than most of the indigenous breeds (Farta, Washera, and Wollo sheep) and even similar to the value reported for 50% Dorper × Menz sheep (17.23 kg) managed under semi-intensive management system ( Abebe et al, 2016 ). The YWT for Dorper × Tumele sheep was comparable with the value reported for Washera and Farta × Washera ( Mekuriaw et al, 2013 ) and Awassi × Tikur sheep ( Tilahun et al, 2016 ).…”

Section: Discussionsupporting

confidence: 68%

“…The variability of climate conditions and the nutrition available for the dam during the gestation period could be the possible reasons for the observed variation across the season. The considerable influence of the year was noted elsewhere ( Berhanu and Aynalem 2009 ; Teklebrhan et al, 2014 ; Abebe et al, 2016 ). The variations across the years may have been due to the variability of rainfall amount and forage abundance.…”

Section: Discussionmentioning

confidence: 53%

“…In line with the current result, the nonsignificant influence of sex on preweaning growth traits is noted by Abd-Allah et al (2012) . However, the superiority of males over females was well documented by several reports ( Mohammadi et al, 2010 ; Teklebrhan et al, 2014 ; Mandal et al, 2015 ; Abebe et al, 2016 ). The effect of parity is consistent with Hussain et al (1996) who noted that weight increases at least up to third parity and according to Mandal et al (2015) , the preweaning growth performance of lambs born from second to third parity dams was higher than lambs of younger and older ewes.…”

Section: Discussionmentioning

confidence: 88%

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Growth and growth curve analysis in Dorper × Tumele crossbred sheep under a smallholder management system

Deribe

Tesema

Lakew³

et al. 2023

Translational Animal Science

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This study aimed to evaluate the growth performance and Kleiber ratio and to determine the growth curve of Dorper x Tumele sheep under a smallholder management system. Growth and efficiency-related traits were analyzed by using the GLM procedure of SAS. Gompertz, Logistics, Brody, Monomolecular, and Negative exponential models were used to determine the growth curve, and growth curve parameters were estimated via the NLIN procedure of SAS. The overall least-squares means of the birth weight, weaning weight, six-month weight, and yearling weight were 3.29, 13.7, 17.3, and 23.4 kg, respectively. Dorper x Tumele lambs grew faster during the pre-weaning period (115.3±1.19 g day -1) than during the post-weaning periods (44.1±1.26 g day -1 to 33.5±1.13 g day -1). Likewise, a higher Kleiber ratio was observed during the pre-weaning age (16.1±0.08 g/day/kg 0.75) than during post-weaning periods (5.08±0.13 g/day/kg 0.75 to 3.10±0.09 g/day/kg 0.75). Brody, a model without an inflection point was the best-fitted growth function for Dorper x Tumele sheep under a smallholder management system. The highest and lowest asymptotic weight was observed for Brody (23.8±0.22 kg) and Logistics (20.7±0.11 kg) models, respectively. The maturation rate ranged between 0.21 (Brody) and 0.66 (Logistics). Based on the Brody model, the correlation between asymptotic weight and maturity rate was -0.92. The growth parameter estimate in this study indicates that Dorper x indigenous sheep had a better speed to achieve mature weight and the early mature crossbred sheep are less likely to exhibit high adult weight. The rapid growth of crossbred sheep during the early period can provide more profit to the farmer by reducing the cost of sheep production inputs. Therefore, crossing Tumele with Dorper sheep and integrating with improved management would be suggested to improve productivity and profit from sheep production.

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