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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Mohammadi, Kourosh Beigi Nassiri, Mohammad Taghi Rahmatnejad, Enayat Abdollahi-Arpanahi, Rostam Hossaini, Seyed Mohammad Reza Hagh Nadar, Saman |
| Spatial Coverage | Iran |
| Description | Author Affiliation: Mohammadi K ( Department of Animal Science, Faculty of Animal Science and Food Industries, Khuzestan Ramin Agricultural and Natural Resources University, Ahwaz, Iran, kouroshmhd@yahoo.co.uk.) |
| Abstract | For the first time, the current study reports the genetic and phenotypic correlations between growth and reproductive traits in Zandi sheep. The data were comprised of 4,309 records of lamb growth traits from 1,378 dams and 273 sires plus 2,588 records of reproductive traits from 577 ewes. These data were extracted from available performance records at Khojir Breeding Station of Zandi sheep in Tehran, Iran, from 1993 to 2008. Correlations were estimated from two animal models in a bivariate analysis using restricted maximum likelihood procedure between lamb growth traits [birth weight (BW), weaning weight at 3 months of age (WW), as well as six-month weight (6 MW)] and ewe reproductive traits [litter size at birth (LSB), litter size at weaning (LSW), total litter weight at birth (TLWB), and total litter weight at weaning (TLWW)]. The genetic correlations between BW and reproductive traits varied from low to high ranges from 0.10 for BW-LSB to 0.86 for BW-TLWB. WW was moderately (0.37) to highly (0.96) correlated with all the reproductive traits. Moreover, the genetic correlations were observed between 6 MW and reproductive traits, varied from 0.19 to 0.95. Relationships between growth and reproductive traits ranged from 0.01 for BW-LSW to 0.28 for BW-TLWB in phenotypic effects. Results indicated that selection to improve WW would have high effect on genetic response in TLWW, and also, these results could be effective for all of the reproductive traits in Zandi sheep. |
| File Format | HTM / HTML |
| ISSN | 00494747 |
| Issue Number | 5 |
| Volume Number | 46 |
| e-ISSN | 15737438 |
| Journal | Tropical Animal Health and Production |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2014-06-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Veterinary Medicine Discipline Tropical Medicine Sheep Growth & Development Genetics Animals Female Iran Male Reproduction Physiology Weaning Weight Gain Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Animal Science and Zoology Food Animals |
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