Variation in fleece characteristics of Awassi sheep at different ages

Tabbaa, M. J.; Al-Azzawi, W. A. R.; Campbell, Dennis

doi:10.1016/s0921-4488(01)00203-6

Cited by 22 publications

(28 citation statements)

References 7 publications

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“…The impact of age could be associated with larger body size and reduced skin follicle density and competition for nutrients and therefore fiber diameter of older sheep increases. In contrast with the present study, increasing age had no significant effect on fiber diameter in Awassi and Arabi sheep (Tabbaa et al, 2001, Ashmawi & El-Azzawy, 1980 possibly because the animals were younger. The overall coefficient of variation of fiber diameter was 50.2%±0.8% (Table 1) with an individual sheep range of 26.7%-88.6% (Table 2).…”

Section: Mean Fiber Diameter and Staple Lengthcontrasting

confidence: 99%

“…The 9.8% medullated OCF in the present study is similar to that reported for Arabi (10.9%) (Ashmawi & El-Azzawy, 1980), lower than those in the Awassi sheep in Jordan and Iraq (12%) (Tabbaa et al, 2001), Moghani sheep in Iran (18.36%) (Farahvash et al, 2010) and higher than those in the Ossimi (5.3%) and Rahmani (2.3%) sheep (Maria et al, 1992), Arkhamerino × Ghezel and Arkhamerino × Moghani crossbred sheep (7.1% and 8.1% respectively) (Esfandyari et al, 2011), Ghezel sheep (9.42%) (Farahvash et al, 2010). Proportion of medullated fiber in fine wool breeds is about 0.1%-0.5% (Lupton et al, 2004).…”

Section: Yield and Percentage Of Wool Typessupporting

confidence: 89%

“…Overall fiber diameter of wool in this study is comparable to Middle Eastern carpet wool sheep breeds, 36.0 µm for Awassi (Tabbaa et al, 2001), 35.4 µm for Ossimi and 31.5 µm for Rahmani (Maria et al, 1992), 38.4 µm for Barbary (Akraim et al, 2008) and 39.1-40.2 µm for Karakaya (Cimen, 2006). Even though not significant, males had slightly lower fiber diameter than females.…”

Section: Mean Fiber Diameter and Staple Lengthsupporting

confidence: 72%

“…One year old sheep had highest percentage of inner ICF percentage and decreased with age. Tabbaa et al (2001) also reported that the percentage of inner coat decreased with advancing age in Awassi and Barki sheep breeds. One year old sheep had the lower percentage of kemp fiber than older sheep, a finding in agreement with Awassi sheep (Tabbaa et al, 2001).…”

Section: Yield and Percentage Of Wool Typesmentioning

confidence: 84%

“…No significant difference in inner coat fiber percentage between males and females of Iranian breeds of the present study was in agreement with the findings of Jordanian Awassi sheep breed. Tabbaa et al (2001) reported 11% and 10% medullated inner coat fiber for male and female Awassi lambs respectively. One year old sheep had highest percentage of inner ICF percentage and decreased with age.…”

Section: Yield and Percentage Of Wool Typesmentioning

confidence: 97%

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Fiber Quality of Iranian Carpet-Wool Sheep Breeds

Ansari-Renani¹

2012

Med Pet

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; 84,2%±0,6%; 9,8%±0,4%; 5,9%±0,4%; dan 69,3%±0,7%. MFD 22% dari seluruh sampel wol adalah 22-30 µm. MFD 36% dari sampel wol adalah antara 31-37 µm dan 42% lebih dari 37 µm. SL dari 12% sampel wol lebih pendek dari 100 mm, 38% sampel antara 100-120 mm, dan 50% sampel lebih panjang dari 120 mm. Karakteristik tersebut merupakan lingkup penting untuk meningkatkan kualitas serat yang dihasilkan bangsa-bangsa domba Iran melalui seleksi genetik.

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Section: Mean Fiber Diameter and Staple Lengthcontrasting

confidence: 99%

Section: Yield and Percentage Of Wool Typessupporting

confidence: 89%

Section: Mean Fiber Diameter and Staple Lengthsupporting

confidence: 72%

Section: Yield and Percentage Of Wool Typesmentioning

confidence: 84%

Section: Yield and Percentage Of Wool Typesmentioning

confidence: 97%

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Fiber Quality of Iranian Carpet-Wool Sheep Breeds

Ansari-Renani¹

2012

Med Pet

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A review of morphological characteristics relating to the production and reproduction of fat-tailed sheep breeds

Pourlis

2011

Trop Anim Health Prod

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The purpose of this study is to survey the literature pertinent to some morphological traits which are related with the production and reproduction of fat-tailed sheep breeds. The fat-tailed breeds were identified according to Food and Agriculture Organization databases. Articles referring to all these sheep breeds were evaluated. The morphology of udders and their measurable variables were collected and described. The particularities of pelt and fleece features which are important from an economic point of view were summarized. Linear, planar, and spatial parameters of body, slaughter, and carcass factors were compared at various ages of breeding. Testicular dimensions and semen characteristics were recorded. Their relationships with productive and reproductive performance were discussed. The pattern of ovarian follicle development and the involution of the genital tract were assessed from the anatomical point of view in normal and untreated animals. The data presented here provide useful baseline information on the normal morphological aspects which are important in the animal production of these breeds.

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Wool characteristics in the third generation of Arkharmerino × Ghezel and Arkharmerino × Moghani crossbreed sheep

Esfandyari

Aslaminejad

Rafat

2011

Trop Anim Health Prod

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This investigation was conducted to evaluate the comparative productive performances and effect of some environmental factors on wool characteristics of Arkharmerino × Ghezel (Ar × Gh) and Arkharmerino × Moghani (Ar × Mo) crossbreed sheep. The mid-side fleece samples taken from animals during 2 years (2007-2008) were analyzed. Each sample was measured for average fiber diameter, fiber diameter variability, staple length, proportion of medullated fiber, proportion of kemp, and comfort factor. The comparative values for these fleece characteristics in F(3) generation Ar × Gh were 28.78 ± 0.48 μm, 36.84 ± 1.16%, 11.94 ± 0.35 cm, 7.07 ± 0.93%, 1.02 ± 0.23%, and 68.93%, respectively; while those traits were 29.79 ± 0.43 μm, 41.86 ± 1.16%, 11.96 ± 0.37 cm, 8.13 ± 1.06%, 2.71 ± 0.45%, and 63.33 ± 3.66% for Ar × Mo, respectively. The effects of genotype, sex, birth type, and year of birth were analyzed. Genotype had a significant (P < 0.01) effect on average fiber diameter and proportion of kemp, and Ar × Gh crossbreeds had lower diameter with less proportion of kemp. The two differences in fiber characteristics that were attributable to sex were fiber diameter variability and proportion of medullated fiber, and females had higher measure than males for both traits. Statistical analysis showed that crossbreeding with Arkharmerino generally had positive effects on the fleece favored to be used in the hand woven authentic carpet production.

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Variation in fleece characteristics of Awassi sheep at different ages

Cited by 22 publications

References 7 publications

Fiber Quality of Iranian Carpet-Wool Sheep Breeds

Fiber Quality of Iranian Carpet-Wool Sheep Breeds

A review of morphological characteristics relating to the production and reproduction of fat-tailed sheep breeds

Wool characteristics in the third generation of Arkharmerino × Ghezel and Arkharmerino × Moghani crossbreed sheep

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