| Investigation in early growth traits, litter size, and lamb survival in two Iranian fat-tailed sheep breeds. | |
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MedLine Citation:
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PMID: 23135983 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In the present study, 1,635 lambing records of Ghezel (n = 766) and Mehraban (n = 869) breeds were used to evaluate the early growth traits, litter size, and lamb survival in sheep reared in Fars Province, southern Iran, during a 5-year-long period. The least squares means (± SE) of lamb birth weight for Ghezel were 5.27 (±0.22), 5.02 (±0.22), and 3.98 (±0.23) kg for single males, single females, and twin lambs, respectively; whereas, the corresponding values for Mehraban were 4.39 (±0.18), 4.18 (±0.18), and 3.50 (±0.19) kg. The least squares means of pre-weaning lamb growth (gram per day) for Ghezel were 239 (±15), 218 (±15), and 181 (±16) for single males, single females, and twin lambs, respectively, and the corresponding values for Mehraban were 204 (±12), 187 (±12), and 156 (±13). Lambs from 2 year old ewes or younger were on average lighter at birth and at weaning and had a lower average daily gain than those from older ewes (P < 0.05). The percentage of twin births increased from 1.1 and 1.3 % for ewes aged ≤ 2 years to 19 and 12 % for those aged ≥ 6 years old in Ghezel and Mehraban, respectively (P < 0.05). The mean pre-weaning lamb mortality was 7.1 and 4.1 % for Ghezel and Mehraban, respectively. |
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Authors:
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Hadi Atashi; Jamshid Izadifard; Mohammad Javad Zamiri; Amir Akhlaghi |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-11-8 |
Journal Detail:
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Title: Tropical animal health and production Volume: - ISSN: 1573-7438 ISO Abbreviation: Trop Anim Health Prod Publication Date: 2012 Nov |
Date Detail:
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Created Date: 2012-11-8 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 1277355 Medline TA: Trop Anim Health Prod Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Animal Science, College of Agriculture, Shiraz University, Shiraz, Iran, Atashi@shirazu.ac.ir. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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