Marius Bogdan, Mihai I Bențea, Aurel Șara


This research proves the effects of Calving Care on reproductive performance in dairy cow, during three successive lactations, on a group of 10 Holstein Friesian cows, using the method of period research. Group M1 / 2014 of 10 cows was considered the control group in which Calving Care was not administered, monitoring its reproductive performance throughout the lactation of 2014. Group E / 2015 was the experimental group, they got Calving Care 300 g / cow / day, 21 days before calving, homogenized in the TMR. The calculated cation-anion difference (DCAD) was -15.28 mEq / 100 g dry matter. Group M2 / 2016 was the second control group, without Calving Care, but the reproductive performance in the following lactation was monitored. After calving, each group was monitored for the service period length, calving interval, service per conception rate and voluntary waiting period. Calving interval has been reduced from 455,2 days in Group M1 / 2014 to 403,9 days in Group E / 2015 (± 3,497) and to 400,9 days in Group M2 / 2016 (± 4,750). Service per conception and voluntary waiting period had also significant differences between groups, suggesting that postpartum health is a direct factor in influencing reproductive performance.


Close-up, anionic salts, service period, calving interval, service per conception, voluntary waiting period, dietary cation-anion difference (DCAD

Full Text:



Animal Husbandry, 2014, http://agritech.tnau.ac.in/animal_husbandry/animhus

DeGaris P. J., I. J. Lean, 2008, Milk fever in dairy cows: A review of pathophysiology and control principles. The Veterinary Journal, 176 (2008), pag. 58-69

Oetzel G. R., B. E. Miller, 2012, Effect of oral calcium bolus supplementation on early lactation health and milk yield in commercial dairy herds. Journal of Dairy Science, 95 (2012), Issue 12, pag. 7051-7052

Raboisson D., M. Mounie, E. Maigne, 2014, Diseases, reproductive performance, and changes in milk production associated with subclinical ketosis in dairy cows: A meta-analysis and review. Journal of Dairy Science, 97 (2014), Issue 12, pag. 7547-7563

Radzikowski D., 2017, Effects of using specialized feed additives for dairy cows in the perinatal period. World scientific News, WSN 78 (2017) 9-13

Reinhardt T. A., J. D. Lippolis, B. J. McCluskey, J. P. Goff, R. L. Horst, 2011, Prevalence of subclinical hypocalcemia in dairy herds. The Veterinary Journal, 188 (2011), pag. 122-124

Ricardo C. C., 2008, Voluntary waiting period: How soon is too soon, and how late is too late? Western Dairy News, No. 3, Vol. 8, 25 May 2008, pag. 89-90

Robinson P. H., J. M. Moorby, M. Arana, R. Hinders, T. Graham, L. Castelanelli and N. Barney, 2000, Influence of late dry period protein supplementation on full lactation productive and reproductive performance of Holstein cows. Journal of Dairy Science 83 (Suppl. 1): 244

Roche J. F., 2006, The effect of nutritional management of the dairy cow on reproductive efficiency. Animal Reproduction Science Volume 96, Issues 3–4, December 2006, pag. 282-296

Seifi H. A., M. Mohri, J. Kalamati-Zadeh, 2004, Use of pre-partum urine pH to predict the risk of milk fever in dairy cows. Veterinary Journal 167:281–285

Siatka K., A. Sawa, S. Krezel-Czopek, D. Piwczynski, M. Bogucki, 2017, Effect of Some Factors on Number of Services per Conception in Dairy Cows. Journal of Veterinary Science and Technology 2017, Vol 8(5): 465

DOI: http://dx.doi.org/10.15835/agrisp.v105i1-2.13039

Copyright (c) 2018 Marius Bogdan, M. I Bențea, A. Șara

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

University of Agricultural Sciences and Veterinary Medicine
3-5 Manastur St., 400372 Cluj-Napoca, Romania
Tel: +40-264-596.384 | Fax: +40-264-593.792