Estimation of genetic parameters for body weight traits and pelt quality score in Iranian Karakul sheep

Mirhoseini, Seyed Ziaeddin; Zare, J; Hossein-Zadeh, Navid Ghavi; Khanzadeh, Hassan; Seidavi, Alireza; Laudadio, Vito; Dario, Cataldo; Tufarelli, Vincenzo; Selvaggi, Maria

doi:10.1016/j.smallrumres.2015.10.012

Cited by 13 publications

(7 citation statements)

References 27 publications

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“…Furthermore, T4 has represented a good indicator for the nutritional level due to its possible association with the status of feed intake in sheep (Abdel-Fattah et al, 2013). This kind of association has been confirmed, since T4 showed a high correlation with live body weights in Karakul sheep at the first six months of age (Mirhoseini et al, 2015). Furthermore, our study has also complied with other investigations performed on the Awassi sheep, in which significant differences in live body weights were identified in the same analyzed time intervals (Singh et al, 2018).…”

Section: Results and Discussion T4 And Gh Variablessupporting

confidence: 90%

Relationship of some metabolic Hormones with Increased Live Body Weight of Male and Female of Karakul and Awassi Lambs

Aljubouri

Al-Khafaji

Al-Shuhaib

2021

Basrah J. Agric. Sci.

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This study was conducted in the animal field of the Al-Kafeel Company from November 2019 till May 2020 to investigate the possible association between growth hormone (GH) and thyroxine (T4) with the growth traits in Awassi and Karakul sheep. The total number of animals which used in the study was 60 lambs, 28 (13 males and 15 females) from Karakul and 32 (18 males and 14 females) from Awassi. Blood samples were collected at birth, weaning, and six months of age, and both GH and T4 concentrations were measured. Results showed higher values of T4 for Karakul as compared with Awassi at birth and weaning. Karakul breed was also exhibited significantly higher values of GH over Awassi breed only at weaning, while, no significant differences were observed at birth and six months of age. Karakul lambs showed higher weights as compared with Awassi lambs at all studied periods. A highly significant (p < 0.01) positive correlation was observed between T4 concentration and the weight of lambs at most studied periods. Whereas, GH did not exhibit any correlation with growth traits measured in both breeds. The elevated T4 might be one of the reasons for superiority of Karakul over Awassi breed in live body weights. This high correlation between T4 and growth traits could be used in the early selection of lambs to improve the weights of sheep at marketing.

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Section: Results and Discussion T4 And Gh Variablessupporting

confidence: 90%

Relationship of some metabolic Hormones with Increased Live Body Weight of Male and Female of Karakul and Awassi Lambs

Aljubouri

Al-Khafaji

Al-Shuhaib

2021

Basrah J. Agric. Sci.

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“…On the other hand, following authors determined higher heritability values for body weight at birth than at weaning: Mirhoseini et al (2015) in Karakul sheep (0.21 and 0.10); Miraei-Ashitani et al (2007) in Sangsari fat-tailed sheep (0.33±0.05 and 0.17±0.05), Latifi and Mohammadi (2018) and Ghafouri- Kesbi and Eskandarinasab (2018) in Iranian Afshari breed (0.11 and 0.08; 0.15 and 0.06).…”

Section: Resultsmentioning

confidence: 95%

Estimation of growth traits heritability coefficients in sheep

et al. 2019

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The objective of this research paper was to estimate heritability coefficients (heritability) of growth traits in the lambs of indigenous Sjenicka Pramenka breed. The research was conducted on a sample which included 421 lambs the descendants of 15 sires and 187 sheep-dams, raised on 3 private farms in Kolubarski district, Serbia. The effect of fixed factors was studied while the values of heritability coefficients were estimated within the frame of SAS software package. A statistically highly significant (**=P<0.01) effect on studied traits had following parameters: sex, year of lambing, type of lambing, farm and method of applied reproductive technology. By means of REML method and using the sire model the values of heritability coefficients were determined for the following traits: average lamb birth weight (BW0), average lamb body weight at 30 days (BW30) and average lamb body weight at 90 days (BW90) being: 0.0355; 0.4642 and 0.3018, respectively. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. TR-31086]

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“…Heritability estimates of (wool-on) pelt traits in both Gotland [13][14][15] and Karakul [16][17][18] lambs vary between studies, although judgement of pelt quality is largely subjective.…”

Section: Introductionmentioning

confidence: 99%

“…This is consistent with heritability estimates in Icelandic sheep, 11 which were low to moderate for pelt thickness (0.15 ± 0.04) and size of the skin (0.27 ± 0.05), and high for skin weight (0.61 ± 0.06). Heritability estimates of (wool‐on) pelt traits in both Gotland 13‐15 and Karakul 16‐18 lambs vary between studies, although judgement of pelt quality is largely subjective.…”

Section: Introductionmentioning

confidence: 99%

Genetic variation in skin traits in New Zealand lambs

et al. 2022

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BACKGROUND This study explored the genetic variability in the New Zealand sheep population for economically important skin traits. Skins were collected at slaughter from two progeny test flocks, resulting in 725 skins evaluated for grain strain, flatness, crust leather strength and overall suitability for shoe leather. DNA profiles collected from skins post‐slaughter were matched to individual animals using previously collected high‐density genotypes. RESULTS Considerable phenotypic variation for skin traits was observed, with around 40% of the skins being identified as suitable for high‐value shoe leather production. Several key traits associated with leather production, including flatness, tear strength, grain strength and grain strain were found to be moderate to highly heritable (h2 = 0.28–0.82). There were no major significant genome‐wide association study (GWAS) peaks associated with many of the traits examined, however, one single‐nucleotide polymorphism (SNP) reached significance for the flatness of the skin over the hindquarters. CONCLUSION This research confirms that suitable lamb skins can be bred for use as high‐value shoe leather. While moderately to highly heritable, skin traits in New Zealand lambs appear to be polygenic with no genes of major effect underlaying the traits of interest. Given the complex nature of these traits, the identification and selection of animals with higher‐value skins may be enabled by geomic selection. © 2022 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Estimation of genetic parameters for body weight traits and pelt quality score in Iranian Karakul sheep

Cited by 13 publications

References 27 publications

Relationship of some metabolic Hormones with Increased Live Body Weight of Male and Female of Karakul and Awassi Lambs

Relationship of some metabolic Hormones with Increased Live Body Weight of Male and Female of Karakul and Awassi Lambs

Estimation of growth traits heritability coefficients in sheep

Genetic variation in skin traits in New Zealand lambs

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