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Impact of US Brown Swiss genetics on milk quality from low-input herds in Switzerland: Interactions with grazing intake and pasture type

Stergiadis, S.; Bieber, A.; Franeschin, E.; Isensee, A.; Eyre, M.D.; Maurer, V.; Chatzidimitriou, E.; Cozzi, G.; Bapst, B.; Stewart, G.; Gordon, A. and Butler, G. (2015) Impact of US Brown Swiss genetics on milk quality from low-input herds in Switzerland: Interactions with grazing intake and pasture type. Food Chemistry, 175, pp. 609-618.

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Online at: http://www.sciencedirect.com/science/article/pii/S0308814614018081

Summary

This study investigated the effect of, and interactions between, contrasting crossbreed genetics (US Brown Swiss [BS] x Improved Braunvieh [BV] x Original Braunvieh [OB]) and feeding regimes (especially grazing intake and pasture type) on milk fatty acid (FA) profiles. Concentrations of total polyunsaturated FAs, total omega-3 FAs and trans palmitoleic, vaccenic, a-linolenic, eicosapentaenoic and docosapentaenoic acids were higher in cows with a low proportion of BS genetics. Highest concentrations of the nutritionally desirable FAs, trans palmitoleic, vaccenic and eicosapentaenoic acids were found for cows with a low proportion of BS genetics (0–24% and/or 25–49%) on high grazing intake (75–100% of dry matter intake) diets. Multivariate analysis indicated that the proportion of OB genetics is a positive driver for nutritionally desirable monounsaturated and polyunsaturated FAs while BS genetics proportion was positive driver for total and undesirable individual saturated FAs. Significant genetics x feeding regime interactions were also detected for a range of FAs.


EPrint Type:Journal paper
Keywords:Milk, Fatty acid, Low-input, Brown Swiss, Original Braunvieh, LowInputBreeds
Subjects: Animal husbandry > Production systems > Dairy cattle
Animal husbandry > Feeding and growth
Animal husbandry > Breeding and genetics
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Animal Husbandry and Breeding
European Union > LowInputBreeds > SP 1: Dairy and meat cattle
Italy > Other organizations
UK > Other organizations
UK > Univ. Newcastle
Switzerland > Other organizations
FP7 Grant Agreement Number:222623
Related Links:http://www.lowinputbreeds.org
Deposited By: Maurer, Dr. Veronika
ID Code:28021
Deposited On:07 Jan 2015 12:20
Last Modified:09 Feb 2015 13:25
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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