The impact of genetic and non-genetic factors on somatic cell count as a monitor of udder health in Slovak Simmental dairy cows

Abstract

Received: 2018-05-18 | Accepted: 2018-05-22 | Available online: 2018-11-26
https://doi.org/10.15414/afz.2018.21.04.166-168

The aim of study was to evaluate the impact of genetic and non-genetic factors on somatic cells count in Slovak Simmental dairy cows in period 2009 to 2013. We observed subsequent results in dairy cows of 55 822 Slovak Simmental cattle. Data were analysed using the SAS and linear model with fixed effects of herd, years and months controls, sire, breeding type. The results of somatic cells count during the years 2009 and 2013 were as follows: the highest number of samples was analysed during 2010 (n = 288 215), where the average count was 560.48*10^{3 ·}ml^-1. The lowest average value of somatic cells count was of amount of 535.93*10^{3 ·}ml^-1 (n = 280 732) in 2009.The linear model represents coefficient determination R² = 0.038296 % (P<0.001) for SCC with all fixed effects. According to the analyses by the effects on SCC the highest effect was the effect of herd R² = 0.021625, then effect of sire R² = 0.015075. These effects were highly statistically significant (P<0.001). Correlation coefficients among milk in kg, fat, protein in % with somatic cells count were r = -0.12918, r = 0.04166 and r = 0.11423. These coefficients were highly statistically significant (P<0.001).

Keywords: dairy cows, milk production, Slovak Simmental cattle, somatic cells count and coefficient of determination

References

Alhussien M.N., Dang A.K. (2018) Milk somatic cells, factors influencing their release, future prospects, and practical utility in dairy animals: An overview. Veterinary World, 11 (5), 562-577. DOI: https://dx.doi.org/10.14202/vetworld.2018.562-577

Boro, P., Naha, B., Prakash, Ch., Madkar, A., Kumar, N., Kumari, A., Prakash Channa, G. (2016) Genetic and non-genetic factors affecting milk composition in dairy cows. International Journal of Advanced Biological Research, 6 (2), 170-174.

Cerón-Muñoz, M., Tonhati, H., Duarte, J., Oliveira, J., Muñoz-Berrocal, M., Jurado-Gámez, H. (2002) Factors affecting somatic cell counts and their relations with milk and milk constituent yield in buffaloes. Journal of dairy science, 85 (11), 2885-2889 https://www.journalofdairyscience.org/article/S0022-0302(02)74376-2/pdf

de Freitas, J. A., da Silva, J., FróesGarcezNeto, A., Machado dos Santos, T. (2017) Somatic cell count and milk yield on physicochemical components of milk from free-stall housed cows. Semina: CiênciasAgrárias, 38 (2). DOI: https://dx.doi.org/10.5433/1679-0359.2017v38n2p909

Jadhav, P.V., Tarate, S.B., Bhuvana, M., Das, D.N., Shome, B.R. (2016) Somatic cell count as a monitoring system for hygienic milk production in India: A review. Asian J. Dairy & Food Res., 35, 270-277.

Japertienė, R., Anskienė, L., Japertas, S. (2016) Evaluation of the milk production and somatic cell count of Lithuanian purebred and crossbred dairy cows. VeterinarijairZootechnika, 73 (95) Supplement, 51-57.

Jattawa, D., Koonawootrittriron, S., Elzo, M. A., Suwanasopee, T. (2012)  Somatic cells count and its genetic association with milk yield in dairy cattle raised under Thai tropical environmental conditions. Asian-Australasian journal of animal sciences, 25 (9), 1216. DOI: https://dx.doi.org/10.5713/ajas.2012.12159

Oudah, E. Z. M. (2009) Non-genetic factors affecting somatic cell count, milk urea content, test-day milk yield and milk protein percent in dairy cattle of the Czech Republic using individual test-day records. Livestock Research for Rural Development, 21.

Rhone, J. A., Koonawootrittriron, S., Elzo M.A. (2008) Factorsaffecting milk yield, milk fat, bacterial score, and bulk tank somatic cell count of dairy farms in the central region of Thailand. In Tropical animal health and production, 40 (2), 147-153.

Saravanan, R., Das, D. N., De, S., Panneerselvam, S. (2015) Effect of season and parity on somatic cell count across zebu and crossbred cattle population. Indian J. Anim. Res., 49, 383-387. DOI: https://dx.doi.org/10.5958/0976-0555.2015.00127.2

SAS User’s Guide 2002-2003. Version 9.3 (TS1M3). SAS Institute. Inc., Carry. NC. USA.

Savić, N. R., Mikulec, D. P., Radovanović, R. S. (2017) Somatic Cell Counts in Bulk Milk and their Importance for Milk Processing. In: IOP Conference Series: Earth and Environmental Science, 85, p012085.

Sharif, A., Muhammad, G. (2008) Somatic cell count as an indicator of udder health status under Modern dairy production: a review. Pakistan Vet. J., 28 (4), 194-200.

Souza, G. N., Brito, José R. F., Brito, Maria A. V. P., Moreira, Élvio C., da Silva, Marcos V. G. B.(2005) Factors affecting somatic cell counts (SCC) in Brazilian dairy cows. In: Animals and environment. Vol.1: Proceedings of the XII-th ISAH Congress on Animal Hygiene, Warsaw, Poland, 4-8 September 2005, BEL Studio sp. zoo., 237-240.

Tančin, V., Mikláš, Š., Mačuhová, L. (2018)  Possible physiological and environmental factors affecting milk production and udder health of dairy cows: a review. Slovak J. Anim. Sci., 51 (1), 32–40.

The Breeding Service of the Slovak Republic. S.E., (B.S. SR, S.E.) (2014) Results of dairy herd milk recording in Slovak Republic at control years 2009 to 2013.