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Magan JB, O Callaghan TF, Kelly AL, McCarthy NA. Compositional and functional properties of milk and dairy products derived from cows fed pasture or concentrate-based diets. Compr Rev Food Sci Food Saf 2021; 20:2769-2800. [PMID: 33949109 DOI: 10.1111/1541-4337.12751] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 02/24/2021] [Accepted: 03/12/2021] [Indexed: 12/11/2022]
Abstract
Worldwide milk production is predominantly founded on indoor, high-concentrate feeding systems, whereas pasture-based feeding systems are most common in New Zealand and Ireland but have received greater attention recently in countries utilizing conventional systems. Consumer interest in 'pasture-fed' dairy products has also increased, arising from environmental, ethical, and nutritional concerns. A substantial body of research exists describing the effect of different feeding strategies on the composition of milk, with several recent studies focusing on the comparison of pasture- and concentrate-based feeding regimes. Significant variation is typically observed in the gross composition of milk produced from different supplemental feeds, but various changes in the discrete composition of macromolecular components in milk have also been associated with dietary influence, particularly in relation to the fatty acid profile. Changes in milk composition have also been shown to have implications for milk and dairy product processability, functionality and sensory properties. Methods to determine the traceability of dairy products or verify marketing claims such as 'pasture-fed' have also been established, based on compositional variation due to diet. This review explores the effects of feed types on milk composition and quality, along with the ultimate effect of diet-induced changes on milk and dairy product functionality, with particular emphasis placed on pasture- and concentrate-based feeding systems.
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Affiliation(s)
- Jonathan B Magan
- Food Chemistry and Technology, Teagasc Food Research Centre, Cork, Ireland.,School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Tom F O Callaghan
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Alan L Kelly
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Noel A McCarthy
- Food Chemistry and Technology, Teagasc Food Research Centre, Cork, Ireland
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O'Callaghan TF, Hennessy D, McAuliffe S, Kilcawley KN, O'Donovan M, Dillon P, Ross RP, Stanton C. Effect of pasture versus indoor feeding systems on raw milk composition and quality over an entire lactation. J Dairy Sci 2016; 99:9424-9440. [PMID: 27720161 DOI: 10.3168/jds.2016-10985] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 07/06/2016] [Indexed: 12/15/2022]
Abstract
The aim of this study was to investigate the effects of different feeding systems on milk quality and composition. Fifty-four multiparous and primiparous Friesian lactating cows were divided into 3 groups (n=18) to study the effects of 3 feeding systems over a full lactation. Group 1 was housed indoors and offered a total mixed ration diet (TMR), group 2 was maintained outdoors on a perennial ryegrass pasture (referred to as grass), and group 3 was also grazed outdoors on a perennial ryegrass/white clover pasture (referred to as clover). Bulk milk samples were collected from each group at morning and afternoon milkings once weekly from March 11 to October 28 in 2015. Milk from pasture-fed cows (grass and clover) had significantly higher concentrations of fat, protein, true protein, and casein. The pasture feeding systems induced significantly higher concentrations of saturated fatty acids C11:0, C13:0, C15:0, C17:0, C23:0, and unsaturated fatty acids C18:2n-6 trans, C18:3n-3, C20:1, and C20:4n-6 and a greater than 2-fold increase in the conjugated linoleic acid C18:2 cis-9,trans-11 content of milk compared with that of the TMR feeding system. The TMR feeding system resulted in milks with increased concentrations of C16:0, C18:2n-6 cis, C18:3n-6 cis, C22:0 C22:1n-9, and C18:2 cis-10,trans-12. Principal component analysis of average fatty acid profiles showed clear separation of milks from the grazed pasture-based diets to that of a TMR system throughout lactation, offering further insight into the ability to verify pasture-derived milk by fatty acid profiling.
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Affiliation(s)
- Tom F O'Callaghan
- APC Microbiome Institute, University College Cork, Cork, Ireland; Department of Microbiology, University College Cork, Cork, Ireland; Department of Biosciences, Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland
| | - Deirdre Hennessy
- Animal and Grassland Research and Innovation Centre, Teagasc Moorepark, Fermoy, Cork, Ireland
| | - Stephen McAuliffe
- Animal and Grassland Research and Innovation Centre, Teagasc Moorepark, Fermoy, Cork, Ireland; School of Biological Sciences, Queen's University, Belfast, BT7 1NN, United Kingdom
| | - Kieran N Kilcawley
- Department of Biosciences, Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland
| | - Michael O'Donovan
- Animal and Grassland Research and Innovation Centre, Teagasc Moorepark, Fermoy, Cork, Ireland
| | - Pat Dillon
- Animal and Grassland Research and Innovation Centre, Teagasc Moorepark, Fermoy, Cork, Ireland
| | - R Paul Ross
- APC Microbiome Institute, University College Cork, Cork, Ireland; Department of Microbiology, University College Cork, Cork, Ireland
| | - Catherine Stanton
- APC Microbiome Institute, University College Cork, Cork, Ireland; Department of Biosciences, Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland.
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Yang Y, Wang J, Yuan T, Bu D, Yang J, Zhou L, Sun P, Zhang J. Impact of region on the composition of milk fatty acids in China. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2013; 93:2864-2869. [PMID: 23401091 DOI: 10.1002/jsfa.5999] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 10/24/2012] [Accepted: 11/20/2012] [Indexed: 06/01/2023]
Abstract
BACKGROUND Milk composition and its fatty acid profile have received much attention with respect to improving human health. However, limited work has been conducted to assess the composition of milk fat in China, which is the third largest producer of milk in the world. In this study the effects of geographical region and seasonal changes (spring and summer) on the fatty acid composition of milk samples collected from six Chinese farms were investigated. RESULTS Milk fat and protein contents, as well as some individual fatty acids and five fatty acid groups, were found to be unaffected by season, but they did show significant differences by geographical region. Levels of milk cis-9, trans-11 conjugated linoleic acid decreased in summer and increased in spring, increased in north (Hohhot), northeast (Harbin), north centre (Beijing) and northwest (Xi'an) China and decreased in far northwest (Urumqi) and east (Chuzhou) China. Monounsaturated fatty acids increased in east and northwest China and decreased in northeast China, while polyunsaturated fatty acids increased in far northwest and north centre China and decreased in northeast China. CONCLUSION This study provides relevent information that contributes to the understanding of parameters affecting variability of milk fatty acid profiles.
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Affiliation(s)
- Yongxin Yang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China; Institute of Animal Science and Veterinary Medicine, Anhui Academy of Agricultural Sciences, Hefei, 230031, China
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Jonker A, Gruber M, Wang Y, Coulman B, Azarfar A, McKinnon J, Christensen D, Yu P. Modeling degradation ratios and nutrient availability of anthocyanidin-accumulating Lc-alfalfa populations in dairy cows. J Dairy Sci 2011; 94:1430-44. [DOI: 10.3168/jds.2010-3604] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Accepted: 11/16/2010] [Indexed: 11/19/2022]
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