Evaluation of Lactose Percentage in Relation to the Somatic Cells Count in Milk of Dairy Cows of the Slovak Spotted Cattle
Keywords:
cattle, dairy cows, milk components, lactose, somatic cells count, correlationAbstract
The aim of this study was to evaluate lactose percentage in relation to the somatic cells count in milk of Slovak Spotted cattle. A total of 468,082 control milk samples from 28,848 dairy cows born from 2000 to 2014 were used for investigating lactose percentage (LP), milk yield (MY), lactose yield (LY), fat percentage (FP), proteins percentage (PP) and somatic cells count (SCC). Data were analysed using the SAS version 9.4 and linear model with fixed effects: farmer (F), years-month of control (YM), order of lactation (OL), sire (S), coding of SCC (CS). In the dataset the average of LP was 4.78±0.27 %, while the one of MY, LY, FP, PP and SCC were 20.44±8.65, 0.98±0.43, 4.04±0.80, 3.49±0.37 and 455.95±1,296.16 cells *1000/ ml. The correlation of LP with MY, LY, FP, PP, and SCC was equal to r = 0.33205, r = 0.41609, r = -0.11414, r = -0.24404 and r = -0.31175. These correlation coefficients were statistically highly significant P <0.0001. Among all fixed effects in the analysis of variance of LP, the most relevant effect was observed for CS (P<.0001).
References
Sneddon, N. W. 2016. A genetic and economic evaluation of lactose in the New Zealand dairy industry. PhD Thesis. Massey University, Palmerston North, New Zealand. 211p.
Haile-Mariam M., Pryce J. E. 2017. Genetic parameters for lactose and its correlation with other milk production traits and fitness traits in pasture-based production systems. Journal of dairy science, 100(5): 3754-3766.
Miglior F. et al. 2017. A 100-Year Review: Identification and genetic selection of economically important traits in dairy cattle. J. Dairy Sci. 100: 10251-10271.
Costa, A., De Marchi, M., Cassandro, M., Visentin, G., Lopez-Villalobos, N., Penasa, M. 2018. Genetic association between milk lactose, freezing point and somatic cell score in Italian Holstein cows. In Proceedings of the 11th World Congress on Genetics Applied to Livestock Production (pp. 11-16).
Costa, A., Bovenhuis, H., Penasa, M. 2020. Changes in milk lactose content as indicators for longevity and udder health in Holstein cows. Journal of dairy science, 103(12): 11574-11584.
Alessio, D. R. M., Neto, A. T., Velho, J. P., Pereira, I. B., Miquelluti, D. J., Knob, D. A., da Silva, C. G. 2016. Multivariate analysis of lactose content in milk of Holstein and Jersey cows. Semina: Ciências Agrárias, 37(4): 2641-2652.
Bujko, J. et al. 2018. The impact of genetic and non-genetic factors on somatic cell count as a monitor of udder health in Slovak Simmental dairy cows. Acta Fytotechnica et Zootechnica, 21(4): 166-168.
Bujko, J. et al. 2019. Evaluation of Milk Components and Somatic Cells Count in breeding herd of the Slovak Spotted Cattle. Scientific Papers Animal Science and Biotechnologies, 52(2): 41-46.
Karcol, J. et al. 2017. Effect of feeding of different sources of NPN on production performance of dairy cows. Acta Fytotechnica et Zootech., 19(4): 163–166.
Juráček, M. et al. 2020. The effect of different feeding system on fatty acids composition of cowʼs milk. Acta Fytotechnica et Zootechnica, 23(1): 37- 41.
Atasever, S., Stádník, L. 2015. Factors affecting daily milk yield, fat and protein percentage, and somatic cell count in primiparous Holstein cows. Indian Journal of Animal Research, 49: 313-316.
Erdem, H.A., Okuyucu, İ.C. 2019. Influence of hygiene status of cows on somatic cell count and milk components during summer season. Large Animal Review, 25, 7-10.
Franzoi, M. et al. 2020. Effects of somatic cell score on milk yield and mid-infrared predicted composition and technological traits of Brown Swiss, Holstein Friesian, and Simmental cattle breeds. Journal of Dairy Science, 103(1): 791-804.
Alessio, D.R. et al., 2021. Lactose and its relationship with other milk constituents, somatic cell count, and total bacterial count. Livestock Science, 252, 104678.
Strapák. P. et al. (2013). Breeding cattle. Nitra: SUA, in Slovak.
Kasarda, R. et al. 2020. Genetic diversity and production potential of animal food resources. Acta fytotechn zootechn, 23(2): 102-108
Bujko, J. et al. 2020. Changes in production and reproduction traits in population of the Slovak Spotted Cattle. In Acta fytotechnica et zootechnica online. ISSN 1336-9245, 23(3): 161-166.
Haygert-Velho, I.M. et al. 2018. Multivariate analysis relating milk production, milk composition, and seasons of the year. Anais da Academia Brasileira de Ciencias, 90 (4): 3839-3852
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.
Costa, A. et al. 2020. Milk somatic cell count and its relationship with milk yield and quality traits in Italian water buffaloes. Journal of Dairy Science, 103(6): 5485-5494.
The Breeding Service of the Slovak Republic. S.E. 2017. Results of milk production and control milk samples in control years in Slovak Spotted cattle in Slovak Republic at control years 2000 to 2014.
SAS INSTITUTE Inc. 2016. Base SAS® 9.4 Procedures Guide. Cary. NC: SAS Institute Inc., Carry, USA.
Slovak Simmental Breeders Association. (2022). Breed standard Slovak Spotted Cattle. In Association of Slovak Spotted Cattle Breeders - Cooperative [online]. Retrieved [cit. 2022-07-15], Available at: http:// www.simmental.sk/about-breed/breed-standard. html
Bujko, J. 2011. Optimalization Genetic Improvement Milk Production in Population Slovak Spotted Breed. Monograph. Nitra: SAU, 78 p.
Miglior F. et al. 2007. Genetic analysis of milk urea nitrogen and lactose and their relationships with other production traits in Canadian Holstein cattle. J. Dairy Sci. 90:2468–2479.
Hagnestam-Nielsen, C., Emanuelson, U., Berglund, B., Strandberg, E. 2009. Relationship between somatic cell count and milk yield in different stages of lactation. Journal of Dairy Science, 92(7): 3124-3133.
Satoła A. et al. 2017. Genetic parameters for lactose percentage and urea concentration in milk of Polish Holstein Friesian cows. Animal Science Papers and Reports, 35(2): 159-172.
Tančin, V. et al. 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.
