Use of ordered logit model with time series data for determining the factors affecting the milk yield of Holstein Friesians

DOI: 10.18805/ijar.B-1066    | Article Id: B-1066 | Page : 488-493
Citation :- Use of ordered logit model with time series data for determining the factors affecting the milk yield of Holstein Friesians.Indian Journal Of Animal Research.2020.(54):488-493
Özge Akkuş and Volkan Sevinç ozge.akkus@mu.edu.tr
Address : Department of Statistics, Muğla Sıtkı Koçman University, 48000, Muğla, Turkey.
Submitted Date : 19-11-2018
Accepted Date : 30-01-2019

Abstract

This article aims to introduce the use of ordered logit model with time series data in milk productivity studies and determine the important factor levels affecting the milk yield of Holstein Friesians. The data consists of 2002 records collected for the years 2009-2015 from the reports of the Cattle Breeders’ Association of Turkey (CBAT) in Muðla province in Turkey. The direct and marginal effects of the variables: parity, lactation length and year of calving on milk yield are investigated and the probabilities regarding the milk yield production for a given specific parity, lactation length and calving year are calculated. The results show that milk yield slightly increases on the 4th parity of cows. As far as the years concerned, although there had mostly been a steady amount of milk production between 2009 and 2015 years, there was a significant decrease in 2011 and increase in 2014.

Keywords

Holstein Friesians Lactation Marginal effects Milk yield Ordered logit model.

References

  1. Akkuş, Ö. and Özkoç, H. (2012). A Comparison of the models over the data on the interest level in politics in Turkey and countries that are members of the European Union: Multinomial or ordered logit model? Res J Appl Sci Eng Tech. 4 (19): 3646-3657.
  2. Aytekin, I., Mammadova, N.M., Altay, Y., Topuz, D., Keskin, Ý. (2016). Determination of factors effecting lactation milk yield of Holstein Friesian cows by path analysis. Selcuk J Agr and Food Sci. 30 (1):44-48.
  3. Banik, S. and Tomar, S.S. (2003). Path analysis of lifetime milk yield in Murrah Buffaloes. Asian Journal of Dairy and Food Research. 22 (3&4): 176-180.
  4. Borooah, V.K. (2002). Logit and probit (ordered and multinomial models). Sage University Papers, 07-138, London. 
  5. Greene, W.H. (2000). Econometric analysis. New York University, Prince Hall, Upper Saddle River, New Jersey 07458, ISBN: 0-13-    013297-7. 
  6. Ýþçi Güneri, Ö., Takma, Ç. and Akbaº, Y. (2015). Siyah alaca sýðýrlarda 305 günlük süt verimini etkileyen faktörlerin Path (Ýz) analizi ile belirlenmesi. Kafkas Univ Vet Fak Derg. 21 (2):219-224.
  7. Koçak, Ö. and Ekiz, B. (2006). Studies on factors affecting the milk yield and lactation curve of Holstein cows in intensive conditions. J. Fac. Vet. Med. Istanbul Univ. 32 (2):61-69.
  8. Liao, T.F. (1994). Interpreting probability models (Logit, probit and other generalized linear models). Sage Publications, Thousand Oaks, London. 
  9. Mote, S.S., Chauhan, D.S., Ghost, N. (2016). Effect of environment factors on milk production and lactation length under different seasons in crossbred cattle. Indian J. Anim. Res. 50 (2): 175-180.
  10. Öner, Y., Yilmaz, O., Okut, H., Ata, N., Mecitoglu, G., Keskin, A. (2017). Association between GH, PRL, STAT5A, OPN, PIT-1, LEP and FGF2 polymorphisms and fertility in Holstein-Friesians Heifers. Kafkas Univ Vet Fak Derg, 23 (4): 527-534.
  11. Powers, D.A. and Xie, Y. (2000). Statistical methods for categorical data analysis. Academic Press, London.
  12. Ristevski, M., Toholj, B., Cincoviv, M., Bobos, S., Trojacanec, P., Stevancevic, M. and Ozren, S. (2017). Influence of body condition score and ultrasound-determined thickness of body fat deposit in Holstein-Friesians cows on the risk of lamaness developing. Kafkas Univ Vet Fak Derg, 23 (1): 69-75.
  13. Solano, L., Barkema, H.W., Pajor, E.A., Mason, S., LeBlanc, S.J., Nash, C.G.R., Haley, D.B., Pellerin, D., Rushen, J., de Passille, A.M., Vasseur, E., Orsel, K. (2016). Association between lying behavior and lameness in Canadian Holstein-Friesian cows housed in freestall barns. J Dairy Sci. 99 (3): 2086-2101.
  14. Tabachnick, B.G. and Fidell, L.S. (2001). Using multivariate analysis, Allyn and Bacon, Boston.
  15. Tahtali, Y., ªahin, A., Ulutaş, Z., ªirin, E., Abaci, S.H. (2011). Esmer irki sigirlarda süt verimi üzerine etkili faktörlerin path analizi ile belirlenmesi. Kafkas Univ Vet Fak Derg, 17 (5): 859-864.
  16. Unalan, A. (2016). Seasonal effects on behavioral estrus signs and estrus detection efficiency in Holstein heifers. Indian J. Anim. Res., 50 (2): 185-189. 

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