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Increased efficiency of wool growth and live weight gain in Merino sheep fed transgenic lupin seed containing sunflower albumin

2000; Wiley; Volume: 81; Issue: 1 Linguagem: Inglês

10.1002/1097-0010(20010101)81

1097-0010

Colin L. White, Linda Tabe, H. Dove, J. Hamblin, Paul Young, N. Phillips, Romney Taylor, S.K. Gulati, J.R. Ashes, Thomas J. Higgins,

Agricultural pest management studies

Journal of the Science of Food and AgricultureVolume 81, Issue 1 p. 147-154 Research Article Increased efficiency of wool growth and live weight gain in Merino sheep fed transgenic lupin seed containing sunflower albumin Colin L White, Corresponding Author Colin L White CSIRO Animal Production, Private Bag PO, Wembley, WA 6014, AustraliaCSIRO Animal Production, Private Bag PO, Wembley, WA 6014, AustraliaSearch for more papers by this authorLinda M Tabe, Linda M Tabe CSIRO Plant Industry, GPO Box 1600, Canberra, ACT 2601, AustraliaSearch for more papers by this authorHugh Dove, Hugh Dove CSIRO Plant Industry, GPO Box 1600, Canberra, ACT 2601, AustraliaSearch for more papers by this authorJohn Hamblin, John Hamblin CLIMA, The University of Western Australia, Nedlands, WA 6907, AustraliaSearch for more papers by this authorPaul Young, Paul Young CSIRO Animal Production, Private Bag PO, Wembley, WA 6014, AustraliaSearch for more papers by this authorNathan Phillips, Nathan Phillips CSIRO Animal Production, Private Bag PO, Wembley, WA 6014, AustraliaSearch for more papers by this authorRomney Taylor, Romney Taylor CSIRO Animal Production, Private Bag PO, Wembley, WA 6014, AustraliaSearch for more papers by this authorSuresh Gulati, Suresh Gulati CSIRO Animal Production, Locked Bag 1, Blacktown, NSW 2148, AustraliaSearch for more papers by this authorJohn Ashes, John Ashes CSIRO Animal Production, Locked Bag 1, Blacktown, NSW 2148, AustraliaSearch for more papers by this authorT J V Higgins, T J V Higgins CSIRO Plant Industry, GPO Box 1600, Canberra, ACT 2601, AustraliaSearch for more papers by this author Colin L White, Corresponding Author Colin L White CSIRO Animal Production, Private Bag PO, Wembley, WA 6014, AustraliaCSIRO Animal Production, Private Bag PO, Wembley, WA 6014, AustraliaSearch for more papers by this authorLinda M Tabe, Linda M Tabe CSIRO Plant Industry, GPO Box 1600, Canberra, ACT 2601, AustraliaSearch for more papers by this authorHugh Dove, Hugh Dove CSIRO Plant Industry, GPO Box 1600, Canberra, ACT 2601, AustraliaSearch for more papers by this authorJohn Hamblin, John Hamblin CLIMA, The University of Western Australia, Nedlands, WA 6907, AustraliaSearch for more papers by this authorPaul Young, Paul Young CSIRO Animal Production, Private Bag PO, Wembley, WA 6014, AustraliaSearch for more papers by this authorNathan Phillips, Nathan Phillips CSIRO Animal Production, Private Bag PO, Wembley, WA 6014, AustraliaSearch for more papers by this authorRomney Taylor, Romney Taylor CSIRO Animal Production, Private Bag PO, Wembley, WA 6014, AustraliaSearch for more papers by this authorSuresh Gulati, Suresh Gulati CSIRO Animal Production, Locked Bag 1, Blacktown, NSW 2148, AustraliaSearch for more papers by this authorJohn Ashes, John Ashes CSIRO Animal Production, Locked Bag 1, Blacktown, NSW 2148, AustraliaSearch for more papers by this authorT J V Higgins, T J V Higgins CSIRO Plant Industry, GPO Box 1600, Canberra, ACT 2601, AustraliaSearch for more papers by this author First published: 28 November 2000 https://doi.org/10.1002/1097-0010(20010101)81:1 3.0.CO;2-ECitations: 35Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract The aim of this experiment was to assess, using sheep, the nutritive value of lupin seed transgenically modified to contain sunflower seed albumin. Eighty Merino wether sheep of mean live weight 32.3 kg were divided into two groups and fed 796 g dry matter (DM) day−1 of a cereal hay-based diet containing 350 g kg−1 of either the transgenic or parent (unmodified) lupin seed for 6 weeks. Measurements were made of wool growth and live weight gain. After 6 weeks, half the sheep in each group were selected for a urine and faeces balance study in which organic matter (OM), nitrogen (N) and urinary purine metabolites were measured. Blood samples were taken from all sheep at the beginning and end of treatment and analysed for amino acids and plasma metabolites. A comprehensive chemical analysis of the grains showed that there was little difference between them in terms of most nutritional components, but the transgenic lupin seed contained a 2.3-fold higher methionine concentration and 1.3-fold higher cysteine than did the parent. There were no significant differences between grains in OM digestibility, rumen microbial protein synthesis or in sacco degradability of dry matter. Sheep fed the transgenic lupin grain had an 8% higher rate of wool growth (P < 0.01) and 7% higher live weight gain (P < 0.05) than sheep fed the parent grain. The sulphur (S) concentration of wool and the cysteine concentration of plasma were also higher in the sheep fed the transgenic lupin by 2.7% and 11.5% respectively (P < 0.05). Plasma methionine was increased by 10%, but the differences were not statistically significant (P > 0.1). Plasma urea N was lower in the sheep fed the transgenic grain than those fed the parent grain (6.5 vs 6.8 mmol l−1, P < 0.05). 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