STUDY ON LACTATION CURVE FOR MILK PRODUCTION INDICES IN MONTBELIARDE DAIRY COWS

Authors

  • Ludovic Toma Cziszter The Research Department, Research and Development Station for Bovine Arad, Arad 310059, Romania Department of Animal Production Engineering, Faculty of Bioengineering of Animal Resources, University of Life Sciences ‘King Mihai I’ from Timișoara, 300645 Timișoara, Romania Author
  • Radu Ionel Neamț The Research Department, Research and Development Station for Bovine Arad, Arad 310059, Romania Department of Animal Production Engineering, Faculty of Bioengineering of Animal Resources, University of Life Sciences ‘King Mihai I’ from Timișoara, 300645 Timișoara, Romania Author
  • Carina-Rebeca El Ouazzani-Pop The Research Department, Research and Development Station for Bovine Arad, Arad 310059, Romania Department of Animal Production Engineering, Faculty of Bioengineering of Animal Resources, University of Life Sciences ‘King Mihai I’ from Timișoara, 300645 Timișoara, Romania Author
  • Alexandru Eugeniu Mizeranschi The Research Department, Research and Development Station for Bovine Arad, Arad 310059, Romania Department of Animal Production Engineering, Faculty of Bioengineering of Animal Resources, University of Life Sciences ‘King Mihai I’ from Timișoara, 300645 Timișoara, Romania Author
  • Silvia Elena Erina The Research Department, Research and Development Station for Bovine Arad, Arad 310059, Romania Department of Animal Production Engineering, Faculty of Bioengineering of Animal Resources, University of Life Sciences ‘King Mihai I’ from Timișoara, 300645 Timișoara, Romania Author
  • Ciprian Valentin Mihali The Research Department, Research and Development Station for Bovine Arad, Arad 310059, Romania Department of Animal Production Engineering, Faculty of Bioengineering of Animal Resources, University of Life Sciences ‘King Mihai I’ from Timișoara, 300645 Timișoara, Romania Author
  • Daniela Elena Ilie The Research Department, Research and Development Station for Bovine Arad, Arad 310059, Romania Department of Animal Production Engineering, Faculty of Bioengineering of Animal Resources, University of Life Sciences ‘King Mihai I’ from Timișoara, 300645 Timișoara, Romania Author

DOI:

https://doi.org/10.1199/cp0gdx18

Keywords:

dairy cows, lactation curve, milk production, Montbeliarde, parity

Abstract

The aim of this paper was to highlight the effect of parity on the shape of the lactation curve for milk yield and composition in Montbeliarde cows. Researches were carried out on 367 lactations obtained from 115 Montbeliarde dairy cows from Hunedoara County. Data was obtained using the standard method of the official milk recording system. Only those lactations were used that had at least 11 controls. Test-day data was modelled using Wood’s incomplete gamma function. Lactations were divided into three classes according to the parity of the cow: primiparous, secundiparous and multiparous. Parity had a significant influence (p<0.001) on the milk production. Milk production of multiparous cows (third lactation or higher) was 16-18% higher than in primiparous cows and 10-14% higher than in secundiparous cows. There were no significant (p>0.05) differences for milk production between primiparous and secundiparous cows. The shape of the lactation curve was significantly influenced (p<0.05) by parity in Montbeliarde dairy cows for milk yield, fat percentage, protein percentage and lactose percentage. Generally, primiparous cows had flatter lactations curves for all indices and lower test-day values, compared to multiparous cows that had sharper lactation curve with higher test-day values.

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Published

2023-08-01

Issue

Vol. 5 No. 3 (2023): Animal Sciences and Veterinary Medicine

Section

Articles