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Impact of US Brown Swiss genetics on milk quality from low-input herds in Switzerland: Interactions with season

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Stergiadis, Sokratis; Bieber, Anna; Chatzidimitriou, Eleni; Franceschin, Enrica; Isensee, Anne; Rempelos, Leonidas; Baranski, Marcin; Maurer, Veronika; Cozzi, Giulio; Bapst, Beat; Butler, Gillian and Leifert, Carlo (2018) Impact of US Brown Swiss genetics on milk quality from low-input herds in Switzerland: Interactions with season. Food Chemistry, 251, pp. 93-102.

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Online at: https://www.sciencedirect.com/science/article/pii/S0308814618300864

Summary

This study investigated the effect of, and interactions between, US Brown Swiss (BS) genetics and season on milk yield, basic composition and fatty acid profiles, from cows on low-input farms in Switzerland. Milk samples (n = 1,976) were collected from 1,220 crossbreed cows with differing proportions of BS, Braunvieh and Original Braunvieh genetics on 40 farms during winter-housing and summer-grazing. Cows with more BS genetics produced more milk in winter but not in summer, possibly because of underfeeding potentially high-yielding cows on low-input pasture-based diets. Cows with more Original Braunvieh genetics produced milk with more (i) nutritionally desirable eicosapentaenoic and docosapentaenoic acids, throughout the year, and (ii) vaccenic and α-linolenic acids, total omega-3 fatty acid concentrations and a higher omega-3/omega-6 ratio only during summer-grazing. This suggests that overall milk quality could be improved by re-focussing breeding strategies on cows’ ability to respond to local dietary environments and seasonal dietary changes.


EPrint Type:Journal paper
Keywords:Milk, Fatty acid, Low-input, Season, Brown Swiss, Original Braunvieh, animal breeding, cattle
Subjects: Animal husbandry > Production systems > Dairy cattle
Animal husbandry > Production systems > Beef cattle
Animal husbandry > Breeding and genetics
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Animal Husbandry and Breeding
Italy > Other organizations
UK > Univ. Newcastle
UK > Univ. of Reading
Switzerland > Other organizations
Norway > Other organizations
Australia > Other organizations
Deposited By: Maurer, Dr. Veronika
ID Code:34686
Deposited On:25 Feb 2019 21:11
Last Modified:25 Feb 2019 21:12
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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