Genetic and phenotypic parameters of body weight in West African Dwarf goat and Djallonké sheep

Bosso, Nicola; Cisse, Mohamed Fatah; Waaij, E.H. van der; Fall, Abdou; Arendonk, J.A.M. van

doi:10.1016/j.smallrumres.2005.11.001

Cited by 72 publications

(67 citation statements)

References 7 publications

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“…With respect to heritability estimates, it becomes difficult to compare with results from the literature because estimates from different studies were obtained with populations of different genetic structure, different management conditions and different methods of estimation. However, our estimates of heritability for BW, WW and YW as well as maternal heritability for BW were within the range reviewed by Safari et al (2005) (Yazdi et al 1997;Gizaw and Joshi 2004;Bosso et al 2007;Rashidi et al 2008); however, the estimated value of heritability for YWDG (0.01) is lower than other reports (Yazdi et al 1997;Gizaw and Joshi 2004;Bosso et al 2007). The low heritability estimated for YWDG can explain the negligible genetic change as observed for this trait.…”

Section: Genetic Parameterssupporting

confidence: 81%

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Short-term selection for yearling weight in a small-experimental Iranian Afshari sheep flock

Ghafouri‐Kesbi¹,

Eskandarinasab²,

Hassanabadi³

2009

Can. J. Anim. Sci.

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(1 , respectively. Estimates of heritabilities and observed genetic trends indicated that selective breeding can lead to significant genetic improvement in Afshari sheep. The average generation interval was estimated to be 3.35 yr. The shorter generation interval was observed on the sire side compared with the dam side (3.30 yr vs. 3.78 yr), indicating faster generation turnover for sires than for dams.

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Section: Genetic Parameterssupporting

confidence: 81%

“…In addition, Bosso et al (2007), who worked on Djallonkeś heep, estimated annual genetic gain for yearling weight as 0.09 kg yr (1 . Positive genetic gains in other traits can be considered as a correlated response.…”

Section: Genetic Trendsmentioning

confidence: 99%

Short-term selection for yearling weight in a small-experimental Iranian Afshari sheep flock

Ghafouri‐Kesbi¹,

Eskandarinasab²,

Hassanabadi³

2009

Can. J. Anim. Sci.

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“…The least phenotypic correlation (0.48) was between birth and 6th month of age and the highest (0.95) was between 5th and 6th month of age. These results are higher (0.19-0.67) than those reported by Bosso et al (2007) for west African dwarf goat and Hirooka et al (1997) for crossbred German fawn goat and katjang local goat in Malaysia. Phenotypic correlations in this study were slightly higher than genetic correlations which indicate that phenotypic correlation can aid in combination between different traits for genetic improvements in livestock through different mating methods.…”

Section: Resultscontrasting

confidence: 61%

Genetic variability in the body weight of Sudan desert goats

2011

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Data on 586 kids from 30 bucks and 120 does of Sudan desert goats was used in the present study. The study aimed at investigating the genetic variations of body weight at various ages. Range of heritability estimates for body weight from birth to 6th month was 0.04-0.54. The estimates from dam component ranged 0.28-0.68 which was higher than that from sire component estimates. The genetic correlations for body weight at various ages were substantially high, ranged from 0.51-0.99 as sire, dam and dam nested in sire components. Phenotypic correlations of body weight at various ages ranged from 0.43-0.99 with differences being significant (P<0.01). Low to high environmental correlations (0.10-0.33) were encountered as dam component. However, the random effect of sire was found to be significantly (P<0.01) positively correlated. Keywords

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“…Small ruminants play significant role to satisfy the demand for livestock products under diminishing natural resources. They have lower feed requirements compared to cattle due to their small body size and they are able to survive and produce under poor environments on low cost feeds [2].…”

Section: Introductionmentioning

confidence: 99%

Effect of Non-Genetic Factors on Reproductive and Growth Performance of Abera Sheep under Community Based Breeding Program in SNNPRS Ethiopia

Marufa¹,

Taye²,

Abebe³

et al. 2017

J Adv Dairy Res

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The study was conducted in Sidama Zone, Dara District Southern Ethiopia. The intention was to investigate the effect of non-genetic factors on reproductive and growth performance of Abera sheep in the District. For this study three years (2013)(2014)(2015) performance data were obtained from Hawassa research center, Dara sub-site. Study identified age at first lambing (AFL) and lambing interval (LI) of the sheep were 9.6 and 12.9 months, respectively; while annual reproductive rate and litter size of the ewes were 1.9 and 1.5 heads. Average birth weight, weaning weight and 6 month weight of Abera sheep were 2.8, 12.3 and 18.5 kg, respectively; while pre and post weaning average daily weight gains were 106 and 40 g/day, respectively. Birth type, sex and year had significant (p<0.05) effect on birth weight (BWT), weaning weight (WWT) and six-months weight; whereas season and parity had significant (P<0.05) effect on BWT and WWT only. Sex and birth type had significant (p<0.01) effect on pre-weaning average daily gain whereas year, season and parity had significant effect on both pre and post-weaning average daily gain. There was within breed variability in growth traits, which were significantly influenced by non-genetic factors like birth type, sex, year, season and parity. Selection for further improvement to achieve higher lamb crop with superior growth performance should be prioritized as within population variability is raw material for improvement through selection. Molecular characterization should also be carried out to identify uniqueness of Abera sheep.

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Genetic and phenotypic parameters of body weight in West African Dwarf goat and Djallonké sheep

Cited by 72 publications

References 7 publications

Short-term selection for yearling weight in a small-experimental Iranian Afshari sheep flock

Short-term selection for yearling weight in a small-experimental Iranian Afshari sheep flock

Genetic variability in the body weight of Sudan desert goats

Effect of Non-Genetic Factors on Reproductive and Growth Performance of Abera Sheep under Community Based Breeding Program in SNNPRS Ethiopia

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