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Dietary Influences on Bovine Milk cis-9,trans-11-Conjugated Linoleic Acid Content |
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| Authors: | C. STANTON F. LAWLESS G. KJELLMER D. HARRINGTON R. DEVERY J.F. CONNOLLY J. MURPHY |
| Affiliation: | Authors Stanton, Lawless, Kjellmer, and Connolly are with Teagasc, Moorepark, Dairy Products Research Centre, Fermoy, Co. Cork, Ireland.;Author Harrington is with Teagasc HQ, 19 Sandymount Ave., Dublin 4, Ireland.;Author Devery is with Dublin City Univ., School of Biological Sciences, Glasnevin, Dublin 11, Ireland.;Author Murphy with Teagasc, Moorepark, Dairy Husbandry Dept., Fermoy, Co. Cork, Ireland. |
| Abstract: | The effects of grass dry matter (DM) allowance and dietary supplements of full fat rapeseeds on levels of cis-9,trans-11 octadecadienoic (CLA) acid in bovine milk were investigated. Grass allowance of 16 kg/(cow*day) resulted in reduced (p<0.05) milk fat CLA levels (3.91 mg CLA/g fat) compared to 20 kg/(cow*day) after 19 wk treatment. CLA levels increased in milk fat from cows on a high-rapeseed-supplemented diet (p<0.001) (1650 g/(cow*day) full fat rapeseed) compared to the control (pasture) and low rapeseed (p<0.01) (825 g/(cow*day) full fat rapeseed) supplemented diets. The variation in milk fat CLA levels among individual cows over both trials was 1.5–16 mg/g. |
| Keywords: | conjugated linoleic acid milk fat octadecadienoic acid rapeseed |