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Research Article

Effect of fatty acids in raw milk on milk yield and composition
Sang-Min Lim1
,
Woan-Sub Kim12*
1Division of Applied Animal Science, School of Animal Life Convergence Science, Hankyong National University, Anseong 17579, Republic of Korea
2Institute of Applied Humanimal Science, Hankyong National University, Anseong 17579, Republic of Korea
*Corresponding Author
31 March 2025. pp. 29-39
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Abstract

As a result of estimating the correlation between the fatty acid profile and milk components, de novo fatty acid (DNF), mixed fatty acid (MIF), and preformed fatty acid (PRF) showed a high correlation with milk fat, with coefficients of 0.8166, 0.8608, and 0.753, respectively. In terms of milk yield, the correlation coefficients for DNF, MIF, and PRF were 0.4231, 0.4087, and 0.4276, indicating a moderate correlation with the fatty acid profile. For milk urea nitrogen (MUN) and β-hydroxybutyrate acid (BHB), no significant relationship with the fatty acid profile was observed, as the coefficient of determination for DNF, MIF, and PRF was relatively low or close to zero. Similarly, in early lactation (first 14 days), a nutritionally negative energy balance phase, the coefficient of determination for DNF, MIF, and PRF in relation to MUN and BHB was also low or near zero, showing no significant correlation with the fatty acid profile. In the correlation analysis between milk yield and milk components, milk yield exhibited negative (–) correlation coefficients of –0.02 and –0.08 with MUN and BHB, respectively. Conversely, milk yield showed a strong positive (+) correlation with milk fat, DNF, MIF, and PRF, with coefficients of 0.69, 0.65, 0.64, and 0.65, respectively. Additionally, milk fat displayed a very high correlation with DNF, MIF, and PRF, with coefficients of 0.90, 0.93, and 0.87, respectively. The changes in fatty acid composition according to lactation stage were also examined. The results indicated that DNF in first-parity cows gradually increased after early lactation, while PRF in all parity groups gradually decreased following early lactation.

Keywords
Fat
Fatty-acids profile
Milk urea nitrogen
Milk yield
β-hydroxybutyrate acid
References
1

Barbano DM, Dann H, Grant R. 2018. Milk Analysis for dairy herd management: Today and in the future. Proceedings 2018 Cornell Nutrition Conference for Feed Manufacturers. October 16-18, 2018, pp 103-117, East Syracuse, New York.

2

Woolpert ME, Dann HM, Cotanch KW, Melilli C, Chase LE, Grant RJ, Barbano DM. 2016. Management, nutrition, and lactation performance are related to bulk tank milk de novo fatty acid concentration on northeastern US dairy farms. Journal of Dairy Science 99:8486-8497. https://doi.org/10.3168/jds.2016-10998

10.3168/jds.2016-1099827522424
3

Woolpert ME, Dann HM, Cotanch KW, Melilli C, Chase LE, Grant RJ, Barbano DM. 2017. Management practices, physically effective fiber, and ether extract are related to bulk tank de novo fatty acid concentration on Holstein farms. Journal of Dairy Science 100:5097-5106. https://doi.org/10.3168/jds.2016-12046

10.3168/jds.2016-1204628390716
4

Barbano DM, Melilli C, Dann H, Grant R. 2017. Infrared milk fatty acid analysis: Experience in the field for farm management. Proceedings of the Cornell Nutrition Conference for Feed Manufacturers. October 17-19, 2017. pp 159-2017, East Syracuse, New York.

5

Geishauser T, Leslie K, Kelton D. Duffield T. 1998. Evaluation of five cowside tests for use with milk to detect subclinical ketosis in dairy cows. Journal of Dairy Science 81:438-443. https://doi.org/10.3168/jds.S0022-0302(98)75595-X

10.3168/jds.S0022-0302(98)75595-X9532498
6

Gross J, van Dorland HA, Bruckmaier RM, Schwarz FJ. 2011. Milk fatty acid profile related to energy balance in dairy cows. Journal of Dairy Research 78:479-488. https://doi.org/10.1017/S0022029911000550

10.1017/S002202991100055021843394
7

Van Haelst YNT, Beeckman A, van Knegsel ATM, and Fievez V. 2008. Elevated concentrations of oleic acid and long-chain fatty acids in milk fat of multiparous subclinical ketotic cows. Journal of Dairy Science 91:4683-4686. https://doi.org/10.3168/jds.2008-1375

10.3168/jds.2008-137519038945
8

Reist M, Erdin D, von Euw D, Tschuemperlin K, Leuenberger H, Delavaud C, Chilliard Y, Hammon HM, Kuenzi N, Blum JW. 2003. Concentrate feeding strategy in lactating dairy cow: Metabolic and endocrine changes with emphasis on leptin. Journal of Dairy Science 86:1690-1706. https://doi.org/10.3168/jds.S0022-0302(03)73755-2

10.3168/jds.S0022-0302(03)73755-212778580
9

Harvatine KJ, Bauman DE. 2011. Characterization of the acute lactational response to trans-10, cis-12 conjugated linoleic acid. Journal of Dairy Science 94:6047-6056. https://doi.org/10.3168/jds.2011-4657

10.3168/jds.2011-465722118092
10

Kay JK, Weber WJ, Moore CE, Bauman DE, Hansen LB, Chester-Jones H, Crooker BA, Baumgard LH. 2005. Effects of week of lactation and genetic selection for milk yield on milk fatty acid composition in holstein cows. Journal of Dairy Science 88:3886-3893. https://doi.org/10.3168/jds.S0022-0302(05)73074-5

10.3168/jds.S0022-0302(05)73074-516230694
Information
  • Publisher :Journal of Humanimal Sciences
  • Publisher(Ko) :한경국립대학교 휴머니멀응용과학연구소
  • Journal Title :Journal of Humanimal Sciences
  • Journal Title(Ko) :휴머니멀과학학술지
  • Volume : 1
  • No :1
  • Pages :29-39
  • Received Date : 2025-02-19
  • Revised Date : 2025-02-24
  • Accepted Date : 2025-02-25
  • DOI :https://doi.org/10.23341/jhas.2025.1.1.29
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