Effects of feed intake and genetics on tissue nitrogen-15 enrichment and feed conversion efficiency in sheep
dc.contributor.author | Cheng, L | |
dc.contributor.author | Logan, CM | |
dc.contributor.author | Dewhurst, RJ | |
dc.contributor.author | Hodge, S | |
dc.contributor.author | Zhou, Huitong | |
dc.contributor.author | Edwards, GR | |
dc.coverage.spatial | United States | |
dc.date.accessioned | 2016-05-19T01:20:49Z | |
dc.date.available | 2015-12-18 | |
dc.date.issued | 2015-12-01 | |
dc.date.submitted | 2015-09-25 | |
dc.description.abstract | This study investigated the effects of sheep genetics and feed intake on nitrogen isotopic fractionation (Δ15N) and feed conversion efficiency (FCE; live weight gain/DMI), using a 2 × 2 factorial design, with 2 levels of genetic merit for growth (high vs. low) and 2 levels of feed intake (110 vs. 170% of ME for maintenance [MEm]). No effect of genetic merit was detected for live weight gain (P = 0.64), FCE (P = 0.46), plasma urea nitrogen (P = 0.52), plasma glucose (P = 0.78), and Δ15N of wool (P = 0.45), blood (P = 0.09), and plasma (P = 0.51). Sheep receiving 170% of MEm had 175% higher live weight gain (P < 0.001) and 77% higher FCE (P < 0.001) than sheep receiving 110% of MEm. There was no difference among treatments at the beginning of the study for either blood or plasma ∆15N, but the treatment groups started to diverge in blood and plasma ∆15N at 21 and 7 d, respectively. Blood, plasma, and wool samples were enriched in 15N compared with feed. There was a higher blood, plasma, and wool ∆15N for the low feed intake group than the high feed intake group (P < 0.001 in all cases). Across the 4 treatment groups, higher FCE in sheep was associated with lower ∆15N for plasma, blood, and wool. Overall, the results are consistent with the potential of ∆15N as a rapid, lowcost biomarker of FCE in sheep, despite there being no effects of genetic treatment on FCE and ∆15N. | |
dc.format.extent | pp.5849-5855 | |
dc.format.medium | ||
dc.identifier | https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=elements_prod&SrcAuth=WosAPI&KeyUT=WOS:000366327000039&DestLinkType=FullRecord&DestApp=WOS_CPL | |
dc.identifier.citation | Cheng, L., Logan, C. M., Dewhurst, R. J., Hodge, S., Zhou, H., & Edwards, G. R. (2015). Effects of feed intake and genetics on tissue nitrogen-15 enrichment and feed conversion efficiency in sheep. Journal of Animal Science, 93(12), 5849-5855. doi:10.2527/jas.2015-9638 | |
dc.identifier.doi | 10.2527/jas.2015-9638 | |
dc.identifier.eissn | 1525-3163 | |
dc.identifier.issn | 0021-8812 | |
dc.identifier.other | 26641195 (pubmed) | |
dc.identifier.uri | https://hdl.handle.net/10182/6975 | |
dc.language | English | |
dc.language.iso | English | |
dc.publisher | Oxford University Press on behalf of the American Society of Animal Science | |
dc.relation | The original publication is available from Oxford University Press on behalf of the American Society of Animal Science - https://doi.org/10.2527/jas.2015-9638 - http://dx.doi.org/10.2527/jas.2015-9638 | |
dc.relation.isPartOf | Journal of Animal Science | |
dc.relation.uri | https://doi.org/10.2527/jas.2015-9638 | |
dc.rights | © 2015 American Society of Animal Science. All rights reserved. | |
dc.subject | genetic and nutritional interaction | |
dc.subject | growth potential | |
dc.subject | isotopic discrimination | |
dc.subject | live weight gain | |
dc.subject | nitrogen-15 | |
dc.subject.anzsrc2020 | ANZSRC::30 Agricultural, veterinary and food sciences | |
dc.subject.anzsrc2020 | ANZSRC::31 Biological sciences | |
dc.subject.mesh | Wool | |
dc.subject.mesh | Animals | |
dc.subject.mesh | Sheep, Domestic | |
dc.subject.mesh | Weight Gain | |
dc.subject.mesh | Nitrogen | |
dc.subject.mesh | Nitrogen Isotopes | |
dc.subject.mesh | Blood Glucose | |
dc.subject.mesh | Blood Urea Nitrogen | |
dc.subject.mesh | Eating | |
dc.subject.mesh | Animal Feed | |
dc.subject.mesh | Biomarkers | |
dc.title | Effects of feed intake and genetics on tissue nitrogen-15 enrichment and feed conversion efficiency in sheep | |
dc.type | Journal Article | |
lu.contributor.unit | LU | |
lu.contributor.unit | LU|Agriculture and Life Sciences | |
lu.contributor.unit | LU|Agriculture and Life Sciences|AGSC | |
lu.contributor.unit | LU|Research Management Office | |
lu.contributor.unit | LU|Vice Chancellor's Office | |
lu.contributor.unit | LU|Research Management Office|OLD QE18 | |
lu.identifier.orcid | 0000-0001-7620-3160 | |
pubs.issue | 12 | |
pubs.publication-status | Published | |
pubs.publisher-url | http://dx.doi.org/10.2527/jas.2015-9638 | |
pubs.volume | 93 |
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