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Influence of organic systems on milk fatty acid profile and CLA in goats

Tudisco, Raffaella and Cutrignelli, Monica Isabella and Calabrò, Serena and Piccolo, Giovanni and Bovera, Fulvia and Guglielmelli, Antonietta and Moniello, Giuseppe and Infascelli, Federico (2010) Influence of organic systems on milk fatty acid profile and CLA in goats. Small Ruminant Research, Vol. 88 (2-3), p. 151-155. ISSN 0921-4488. Article.

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DOI: 10.1016/j.smallrumres.2009.12.023

Abstract

The effect of organic system on the fatty acid profile of milk and CLA content was evaluated using 30 pregnant pluriparous goats, divided into two homogeneous groups (S and O) of 15 goats each. Group S was housed in a stable and received alfalfa hay as forage, while group O was raised according EC Regulation 834/2007 and led to pasture. After the kids weaning, goats were milked twice a day for 5 months. Daily milk yield was recorded and, monthly, representative milk samples from the two daily milkings were analysed for chemical and fatty acid profile. Average milk yield did not differ statistically between the groups. The goats of the O group had significantly higher fat content in milk than those of group S (65.9 g/day vs. 54.3 g/day, P < 0.01). Among milk fatty acids, organic system significantly affected the percentages of C18:1 c9, C18:1 t11, linoleic acid, alpha-linolenic acid, monounsaturated fatty acid and polyunsaturated fatty acid. Organic system highly influenced the c9 t11 conjugated linoleic acid (CLA) (0.810 g/100 g of fat vs. 0.542 g/100 g of fat, for groups O and S, respectively, P < 0.01), t10 c12 CLA (0.041 g/100 g of fat vs. 0.024 g/100 g of fat, for groups O and S, respectively, P < 0.01) and ∑CLA (0.87 g/100 g of fat vs. 0.58 g/100 g of fat for groups O and S, respectively, P < 0.01) concentrations of milk.

Item Type:Article
ID Code:4812
Status:Published
Refereed:Yes
Uncontrolled Keywords:Goat, organic system, milk fatty acid profile, CLA
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/18 Nutrizione e alimentazione animale
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze zootecniche
001 Università di Sassari > 01 Dipartimenti > Biologia animale
Publisher:Elsevier
ISSN:0921-4488
Copyright Holders:© 2009 Elsevier B.V.
Deposited On:12 Nov 2010 11:45

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