Factors Affecting Milk Somatic Cell Counts and Its Parameter Estimation in Holstein of Khorasan Razavi Province by Random Regression

Document Type : Genetics & breeding

Authors

• Sonia Zakizadeh ¹
• Mokhtar Ali Abbasi ²
• Behnam Saremi ³
• Hossein Rashid ⁴

¹ The University of Tehran

² Tarbiat Modarres University

³ Head of Livestock Nutrition Research, Ionic, Frankfurt, Germany

⁴ Expert of recording and registration, Improving of Animal Production Organization, Khorasan Razavi, Mashhad, Iran.

10.22067/ijasr.v9i4.51941

Abstract

Introduction Mastitis is recognized as one of the most costly diseases of the dairy industry. Somatic cell count (SCC) is a widely used indicator trait for mastitis, which in many countries is used as an indirect selection criterion for improving mastitis resistance. This is based on the positive genetic correlation between clinical mastitis (CM) and SCC. Recent estimates of the genetic correlation between mastitis and SCC range between 0.53 and 0.77 and the heritability is estimated between 0.05 and 0.31. Individual test day SCC are influenced by systematic environmental effects, such as stage of lactation, lactation number, season of calving, and season of recording. The aim of this study was to investigate factors affecting milk somatic cell score (SCC) and estimation of its heritability and correlation with the other productive traits.
Materials and Methods A total of 185688 test day records of production and pedigree from 54 herds in Khorasan Razavi State were used. To normalize SCC, log transformation of natural records were considered from cows, which had at least one calving up to 10th. Environmental effects such as herdyear of record (247 levels), stage of lactation (15 levels), lactation number (10 levels), month of recording (12 levels), year of calving (9 levels) and season of calving (4 levels), and the 1st and 2nd regression coefficient of milk production were included in the model. Heritability of SCS was estimated by animal model test-day random regression and correlations between traits were analyzed by bivariate animal model of Wombat. Fixed effects in model included herdyear of record, Holstein gene percentage, and stage of lactation as covariate, as well as additive genetic effect and common permanent environmental effects as random effects with 5-degree of Legendre.
Results and Discussion Analysis of variance revealed that all factors in models were significant (P

Keywords

• Genetic correlation
• Heritability
• Milk somatic cells
• Phenotypic correlation
• Random regression

20.1001.1.20083106.1397.9.4.6.2

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References

1- Abedini, A., H. Farhangfar., K. Shojaean., H. Nayimipoor Yunesi., M. Bashtani, and B. Mohammadnazar. 2011. Parameter estimation and genetic trend of somatic cell score in Holstein by a test-day model random regression. Iranian Journal of Animal Science Research, 3(2): 193-200. (In Persian).

2- Alam, A., C. I. Cho., T. J. Choi., B. Park., J. G. Choi., Y. H. Choy., S. S. Lee, and K. H. Cho. 2015. Estimation of genetic parameters for somatic cell scores of Holsteins using multi-trait lactation models in Korea. Asian Australas. Journal of Animal Scince, 28(3): 303-310.

3- Calus, M. P. L., L. L. G. Janss, and R. F. Veerkamp. 2006. Genotype by environment interaction for somatic cell score across bulk milk somatic cell count and days in milk. Journal of Dairy Science, 89(12): 4846–4857.

4- Cappelloni, M., R. Montovani, and M. Froretti. 2011. Genetic parameters for test-day milk yields and somatic cell score in Aosta Pie Red cattle. Page 29 in Proc. of 62th annual meeting of EAAP, Norway.

5- Caraviello, D. Z. 2004. Selection for Clinical Mastitis and Somatic Cell Count. Dairy Updates. Reproduction and Genetics. No. 613.

6- Carlen, E., E. Strandberg, and A. Roth. 2004. Genetic parameters for clinical mastitis, somatic cell score, and production in the first three lactations of Swedish Holstein cows. Journal of Dairy Science, 87(9): 3062–3070.

7- Cheraghi Sarai, S., Kh. Kheirabadi., S. Aligani., Gh.A. Moghadam, and S.A. Raafat. 2012. Estimation of genetic parameters of somatic cell score in Holstein. Pages 989-992 in Proc. of 5th congress on Animal Science. Isfahan, Iran. (In Persian).

8- Christ-le- Robert. G., F. Jean-Louis., M. Elie, and R. Rachel. Statistical analysis of somatic cell scores via mixed model methodology for longitudinal data. 2004. Journal of Animal Science Research, 53(4): 259-273

9- Dadpasand, M., M. J. Zamiri, and H. Atashi. 2013. Genetic correlation of average somatic cell score at different stages of lactation with milk yield and composition in Holstein cows. Iranian Journal of Veterinary Research, 14(3): 190-196.

10- De Haas, Y., H. W. Barkema, and R. F. Veerkamp. 2002. Genetic parameters of pathogen-specific incidence of clinical mastitis in dairy cows. Animal Science, 74(3): 233-242

11- De Roos, P. W., M. H. Poo., M. Caccamo., G. Azzaro., J. D. Ferguson, and G. Licitra. 2005. Variance components of test-day milk, fat, and protein production, and somatic cell score from all parities of dairy cows in South-eastern Sicily estimated with a random regression model. Page 202 in Proc. the 2005 Joint Meeting of ADSA, ASAS, and CSAS. Cincinnati, Ohio.

12- Faraji Arough, H., A.A. Aslaminejad, and M. Rokuei. 2012. Genetic and phenotypic trends of somatic cell score and determination the effective factors in Iranian Holstein cattle. Iranian Journal of Animal Science Research, 3(4): 459-464. (In Persian)

13- Fuerst, C., J. Dodenhoff., R. Emmerling., D. Krogmeier, and E. Niebel. 2010. Zuchtwertschatzung beim rind. Available at http://www.zar.at/download/ZWS/ZWS.pdf.

14- Ghasemi, Z., A. A. Aslaminejad., M. Tahmoorespoor., M. Rokouei, and H. Faraji-Arough. 2014. Estimation of genetic, environmental and phenotypic effects and correlation between production traits and somatic cell score in Iranian Holstein cows. Animal Science and Research Journal, 13: 37-50.

15- Haile-Mariam, M., M. E. Goddard, and P. J. Bowman. 2001. Estimates of genetic parameters for daily somatic cell count of Australian dairy cattle. Journal of Dairy Science, 84(5):1255–1264.

16- Heringstad, B., R. Rekaya., D. Gianola., G. Klemetsdal, and K. A. Weigel. 2003. Bivariate Analysis of Liability to Clinical Mastitis and to Culling in First-Lactation Cows. Journal of Dairy Science, 86(2):653–660

17- Kelly, P. 2009. A study of the somatic cell count (SCC) of Irish milk from herd management and environmental perspectives. PhD thesis. National University of Ireland, Dublin, Ireland.

18- Kheirabadi, Kh, and S. Alijani. 2014. Estimation of genetic parameters and genetic trends of somatic cell score in Iranian Holstein cows using test-day records. Iranian Journal of Applied Animal Science, 4(4): 707-716. (In Persian).

19- Mark, T., W. F. Fikse., P. G. Sullivan, and P. M. VanRade. 2007. Prediction of Genetic Correlations and International Breeding. Values for Missing Traits. Journal of Dairy Science, 90(10):4805–4813

20- Morek-Kopec, M, and A. Zarnecki. 2011. Association between somatic cell count and functional longevity in Polish Holstein-Friesian cows. Page 403 in Proc. 62th annual meeting of EAAP, Norway.

21- Mostert, B. E., C. Banga., E. Groeneveld, and F. H. J. Kanfe. 2004. Breeding value estimation for somatic cell score in South African dairy cattle. South African Journal of Animal Science, 34(6): 32-34.‏

22- Mrode, R. A, and G. J. T. Swanson. 1996. Genetic and statistical properties of somatic cell count and its suitability as an indirect means of reducing the incidence of mastitis in dairy cattle. Animal Breeding, 64: 847 –857.

23- Norberg E., P. Madsen, and J. Pedersen. 2009. A multi-trait genetic analysis of protein yield, udder health, and fertility in first lactation Danish Holstein, Danish Red, and Danish Jersey using an animal model. Acta Agriculturae Scandinavica Section A – Animal Science, 59(4): 197–203.

24- Odegard, J., J. Jensen., P. Madsen., D. Gianola., G. Klementsdal, and B. Heringstad. 2003. Detection of mastitis in dairy cattle by use of mixture models for repeated somatic cell scores: A Bayesian approach via Gibbs sampling. Journal of Dairy Science, 86(11): 3694–3703.

25- Olde Riekerink, R. G. M., H. W. Barkema, and H. Stryhn. 2007. The Effect of season on somatic cell count and the incidence of clinical mastitis. Journal of Dairy Science, 90(4):1704–1715

26- Prendiville, R., K. M. Pierce, and F. Buckley. 2010. A comparison between Holstein-Friesian and Jersey dairy cows and their F1 cross with regard to milk yield, somatic cell score, mastitis, and milking characteristics under grazing conditions. Journal of Dairy Science, 93(6): 2741–2750

27- Raffrenato, E., R. W. Blake., P. A. Oltenacu., J. Carvalheira, and G. Licitra. 2003. Genotype by Environment Interaction for Yield and Somatic Cell Score with Alternative Environmental Definitions. Journal of Dairy Science, 86(7): 2470–2479

28- Razmkabir, M, and Kh. Kheirabadi. 2016. Genetic analysis of somatic cell score using random regression test day model in dairy cattle of Iran. Iranian Journal of Animal Science, 46(4): 389-397. (In Persian).

29- Rekik, B., N. Ajili., H. Belhani., A. Ben Gara, and H. Rouissi. 2008. Effect of somatic cell count on milk and protein yields and female fertility in Tunisian Holstein dairy cows. Livestock Science, 11(6): 309-317.

30- Rzewuska, K., J. Jamrozik., A. Żarnecki, and T. Strabel. 2011. Genetic parameters of test-day somatic cell scores for the first three lactations of Polish Holstein-Friesian cattle. Czech Journal of Animal Science, 56(9): 381-389.

31- Samore, A., R. Rizzi., A. Rossoni, and A. Bagnato. 2010. Genetic parameters for functional longevity, type traits, somatic cell scores, milk flow and production in the Italian Brown Swiss. Italian Journal of Animal Science, 9(2): 145-152.

32- Schutz, M. M., L B. Hansen., G. R. Steuernagel, and J. K. Renea. A. L. Kuck. 1990. Genetic parameters for somatic cells, protein, and fat in milk of Holsteins. Journal of Dairy Science, 73(2): 494-502

33- Spehar, M., Z. Ivkic., G. Gorjanc., V. Bulic., P. Mijic, and Z. Barac. 2011. Genetic parameters for somatic score in Croatian Holstein cattle. Page 412 in Proc. 62th annual meeting of EAAP, Norway.

34- Taghizadeh, A., S. Hasani., H. Farhangfar., M. Ahani Azari., F. Samadi, and A. Moghimi Esfandtari. 2011. Genetic analysis of milk somatic cell score in Iranian Holstein by test-day model random regression. Pages 774-444 in Proc. National Congress on Modern Agriculture Science & Technology, University of Zanjan, Zanjan, Iran. (In Persian).

35- Vallimont, J. E., C. D. Dechow., C. G. Sattler, and J. S. Clay. 2009. Heritability estimates associated with alternative definitions of mastitis and correlations with somatic cell score and yield. Journal of Dairy Science, 92(7): 3402–3410.

36- Wu, X. L., B. Heringstad., Y. M. Chang., G. de los Campos, and D. Gianola. 2007. Inferring relationships between somatic cell score and milk yield using simultaneous and recursive models. Journal of Dairy Science, 90(7): 3508-3521.

37- Zavadilov, L., J. Wolf., M. Štipkova., E. Němcova, and J. Jamrozik. 2011. Genetic parameters for somatic cell score in the first three lactations of Czech Holstein and Fleckvieh breeds using a random regression model. Czech Journal of Animal Science, 56(6): 251-260.