Productivity and Reproductive Performance of Mixed-Age Ewes across 20 Years of Selection for Ultrafine Wool in Uruguay

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dc.citation.issue8
dc.citation.volume11
dc.contributor.authorRamos Z
dc.contributor.authorBlair HT
dc.contributor.authorDe Barbieri I
dc.contributor.authorCiappesoni G
dc.contributor.authorMontossi F
dc.contributor.authorKenyon PR
dc.date.accessioned2024-01-03T21:22:15Z
dc.date.accessioned2024-07-25T06:36:28Z
dc.date.available2024-01-03T21:22:15Z
dc.date.available2024-07-25T06:36:28Z
dc.date.issued2021-08-01
dc.description.abstractThis study reports the phenotypic trends for wool, growth, and reproductive traits in mixed-age ewes after twenty years of genetic selection. Data were obtained from the Merino nucleus flock in Uruguay between 1999 and 2020. Overall, the aim of this selection flock was to reduce the fiber diameter (FD) and increase both the clean fleece weight (CFW) and live weight (LW). Data on ewe wool traits, LW, body condition score (BCS), the total number of lambs weaned (TLW), and the total LW of lambs weaned (TWW) across all lambing opportunities (1–8 mating seasons) were analyzed. Between 1292 and 2063 ewes were measured, depending on the trait considered. Ewe FD decreased by approximately 3 µm (19–16 µm), whereas greasy fleece weight (GFW) increased by 0.2 kg. This improvement in wool traits was accompanied by increases in LW at mating (3 kg), decreases in BCS at mating (approximately by 1 unit), and a small positive change in TWW across years. This study demonstrated that increasing farmer income by selecting for finer wool, heavier fleeces, and heavier animals can be obtained without compromising ewe lifetime reproduction.
dc.identifier.author-urlhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000688574600001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationRamos Z, Blair HT, De Barbieri I, Ciappesoni G, Montossi F, Kenyon PR. (2021). Productivity and reproductive performance of mixed-age ewes across 20 years of selection for ultrafine wool in uruguay. Agriculture (Switzerland). 11. 8.
dc.identifier.doi10.3390/agriculture11080712
dc.identifier.eissn2077-0472
dc.identifier.elements-typejournal-article
dc.identifier.numberARTN 11080712
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/70527
dc.publisherMDPI (Basel, Switzerland)
dc.relation.isPartOfAgriculture (Switzerland)
dc.rights(c) 2021 The Author/s
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectsheep
dc.subjectwool
dc.subjectselection
dc.subjectlive weight
dc.subjectbody condition score
dc.subjectlifetime reproduction
dc.titleProductivity and Reproductive Performance of Mixed-Age Ewes across 20 Years of Selection for Ultrafine Wool in Uruguay
dc.typeJournal article
pubs.elements-id448165
pubs.organisational-groupOther
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