Phenotypic Responses to Selection for Ultrafine Wool in Uruguayan Yearling Lambs

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dc.citation.issue2
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.accessioned2024-01-03T00:45:11Z
dc.date.accessioned2024-07-25T06:47:59Z
dc.date.available2024-01-03T00:45:11Z
dc.date.available2024-07-25T06:47:59Z
dc.date.issued2021-02-22
dc.description.abstractThis study evaluated the phenotypic trends for wool and growth traits of the fine Merino genetic nucleus in Uruguay. Data were collected from one-year-old lambs over a twenty-year period (1999–2018). The overall aim of the selection flock was to reduce fiber diameter with concomitant increases in fleece and live weights. Traits analyzed included fiber diameter (FD), greasy fleece weight (GFW), coefficient of variation of FD (CVfd), staple length (SL), scoured yield (SY), live weight post-shearing (LW), eye muscle area (EMA) and fat thickness (FAT). Data from approximately 5300 one-year-old male and female lambs were analyzed. During the study period, FD decreased by approximately 3 µm, whereas GFW and LW increased by at least 0.5 and 3.0 kg, respectively. There were interactions between the sex of the individual and the year for all wool traits. Except for FAT, all other traits were affected by the dam age. This study indicates that the selection program applied in the fine Merino genetic nucleus over a twenty-year period resulted in reductions in FD and increases in GFW and LW. Therefore, the results indicate it is possible to produce ultrafine wool in semi-extensive grazing systems without compromising other economically relevant traits in one-year-old lambs.
dc.format.pagination1-16
dc.identifier.author-urlhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000621999700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationRamos Z, Blair HT, De Barbieri I, Ciappesoni G, Montossi F, Kenyon PR. (2021). Phenotypic responses to selection for ultrafine wool in uruguayan yearling lambs. Agriculture (Switzerland). 11. 2. (pp. 1-16).
dc.identifier.doi10.3390/agriculture11020179
dc.identifier.eissn2077-0472
dc.identifier.elements-typejournal-article
dc.identifier.numberARTN 179
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/70905
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.subjectultrafine
dc.subjectselection
dc.subjectwool
dc.subjectlive weight
dc.titlePhenotypic Responses to Selection for Ultrafine Wool in Uruguayan Yearling Lambs
dc.typeJournal article
pubs.elements-id441838
pubs.organisational-groupOther
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