Effect of forage/concentrate ratio and oil supplementation on C 18:1 and CLA isomers in milk fat from Sarda ewes

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Policies General information Open Access, Licensing terms, Commercial use and Copyright terms policies Self-archiving policy and Archive policies Article Correction and Withdrawal policy Manuscript Submission policy Authorship policy Conflict of Interest policy Language considerations policy Plagiarism and Duplicate publications policy Ethics policy Review process policy Acceptance of manuscripts policy Online First Articles and Special Issues policies Generative artificial intelligence (AI) policy Advertising policy

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Suppl. 1/2004 vol. 13

SHORT COMMUNICATION

Effect of forage/concentrate ratio and oil supplementation on C_18:1 and CLA isomers in milk fat from Sarda ewes

M. Antongiovanni ¹

,

M. Mele ²

,

A. Buccioni ¹

,

F. Petacchi ¹

,

A. Serra ²

,

M. P. Melis ³

,

L. Cordeddu ³

,

S. Banni ³

,

P. Secchiari ²

1

Dipartimento di Scienze Zootecniche, Università di Firenze, Italy

2

D.A.G.A.- Sezione Scienze Zootecniche, Università di Pisa, Italy

3

Dipartimento di Biologia Sperimentale, Università di Cagliari, Italy

Publication date: 2004-08-30

Corresponding author

M. Antongiovanni

Dipartimento di Scienze Zootecniche, Università di Firenze, Italy

J. Anim. Feed Sci. 2004;13(Suppl. 1):669-672

DOI: https://doi.org/10.22358/jafs/74086/2004

KEYWORDS

trans fatty acids

ABSTRACT

Sixteen lactating Sarda ewes were fed 4 diets differing in the forage/concentrate ratio (2 diets 75/25, 2 diets 60/40, DM) and in soyabean oil supplementation (2 diets with 100 g/head/d oil, 2 diets with no oil), in a 4x4 Latin square design. The inclusion of soyabean oil in the diet resulted in a significant increase of both rumenic acid (cis 9 trans, 11 CLA) and vaccenic acid (trans 11 C_18:1) in milk fat, with higher increases with the 2 high forage diets. The 2 low forage diets allowed increases of trans 10 C _18:1 and of trans 10, cis 12 CLA, probably due to a shift of rumen biohydrogenation of linoleic acid.

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