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Tropical Animal Health and Production

, Volume 50, Issue 8, pp 1797–1805 | Cite as

Milk production and fatty acid profile of dairy cows grazing four grass species pastures during the rainy season in small-scale dairy systems in the highlands of Mexico

  • D. A. Plata-Reyes
  • E. Morales-Almaraz
  • C. G. Martínez-García
  • G. Flores-Calvete
  • F. López-González
  • F. Prospero-Bernal
  • C. L. Valdez-Ruiz
  • Y. G. Zamora-Juárez
  • C. M. Arriaga-JordánEmail author
Regular Articles
  • 108 Downloads

Abstract

The study evaluated small-scale dairy systems with continuous grazing of pastures based on three temperate grasses festulolium (FL), tall fescue (TF), and perennial ryegrass (RG), compared with subtropical kikuyu grass (KG). All pastures were associated with white clover (Trifolium repens L.). Twelve multiparous Holstein cows were assigned to a 4 × 4 Latin square replicated three times with 14-day experimental periods. Sampling and analyses of pastures, concentrates, and animal variables followed standard procedures. FL showed a significantly (p < 0.05) higher mean sward height, but there were no differences (p > 0.05) in net herbage accumulation. There were significant differences (p < 0.05) among pastures for CP, NDF, ADF, in vitro digestibility of OM (IVOMD), and estimated metabolizable energy (eME). There were no differences (p > 0.05) between treatments for milk yield and composition, live weight, or body condition score. There were significant differences (p < 0.05) in fatty acid values for pastures in C14:0, C16:1, and C18:3n3. There were significant differences between treatments (p < 0.05) in milk contents for C18:0, C18:1t11, and C18:2c9t11. Grazing FL, TF, RG, or KY pastures showed no differences in milk yields. Higher values for C18:0, C18:1t11, and C18:2c9t11 were detected in KY, RG, and TF. RG had significantly higher MUFA than FL and higher PUFA than TF. A value under 65% of SFA, a ratio of n-6/n-3 lower than 4, and an atherogenic index of 1.7 are indicators of milk with beneficial effects for human health.

Keywords

Feeding strategies Conjugated linoleic acid Fatty acids in milk Festulolium Lolium arundinaceum Lolium perenne Pennisetum clandestinum 

Notes

Acknowledgments

The authors express gratitude to the farmers who participated in this experiment, whose privacy is respected by not disclosing their names.

Funding information

This work was undertaken thanks to funding by the Mexican National Council for Science and Technology (Consejo Nacional de Ciencia y Tecnología–CONACYT) through grant 129449 CB-2009 and the postgraduate grant for Dalia Andrea Plata-Reyes.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Statement on ethical standards and animal rights

The paper reports an on-farm experiment undertaken with two participating farmers who had knowledge of the objectives of the work and were duly informed at all times, and their privacy and that of their family respected by not disclosing their names. Experimental procedures with dairy cows followed accepted procedures by Universidad Autónoma del Estado de México.

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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  • D. A. Plata-Reyes
    • 1
  • E. Morales-Almaraz
    • 2
  • C. G. Martínez-García
    • 1
  • G. Flores-Calvete
    • 3
  • F. López-González
    • 1
  • F. Prospero-Bernal
    • 1
  • C. L. Valdez-Ruiz
    • 1
  • Y. G. Zamora-Juárez
    • 1
  • C. M. Arriaga-Jordán
    • 1
    Email author
  1. 1.Instituto de Ciencias Agropecuarias y Rurales (ICAR)Universidad Autónoma del Estado de México (UAEM)TolucaMexico
  2. 2.Facultad de Medicina Veterinaria y ZootecniaUniversidad Autónoma del Estado de México (UAEM)TolucaMexico
  3. 3.Centro de Investigaciones Agrarias de Mabegondo (CIAM)La CoruñaSpain

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