Asian Journal of Dairy and Food Research, volume 40 issue 2 (june 2021) : 185-188

Comparative Evaluation of Lactation Curves of Crossbred Dairy Cows in Field Conditions in Tamil Nadu, India 

C. Balan, M. Thirunavukkarasu
1Department of Animal Husbandry Statistics and Computer Applications, Faculty of Basic Sciences, Madras Veterinary College Campus, Tamil Nadu Veterinary and Animal Sciences University, Chennai-600 007, Tamil Nadu, India.
Cite article:- Balan C., Thirunavukkarasu M. (2021). Comparative Evaluation of Lactation Curves of Crossbred Dairy Cows in Field Conditions in Tamil Nadu, India. Asian Journal of Dairy and Food Research. 40(2): 185-188. doi: 10.18805/ajdfr.DR-1597.
Background: Various mathematical models have been tried by different researchers to fit the lactation curves in indigenous, exotic and crossbred cows maintained in organised farms only. Hence, this study was aimed to fit various lactation models and to identify the best fit model (s) for prediction of milk production in crossbred dairy cows in field conditions.
Methods: Multistage random sampling procedure was used for selection of 100 dairy cows for the purpose of data collection. The monthly milk yield data (up to 10 months of lactation) of the selected crossbred cows reared in field conditions of Tamil Nadu State, relating to the period from 2017-20, were collected for lactation curve modelling. The milk data so collected were used to fit 14 lactation curve models in the study. The highest Coefficient of Determination (R²) value and the least Root Mean Square Error (RMSE) value were used as the criteria to select the best fit model(s).
Result: The overall average total milk production was estimated to be 2223.19 kg per lactation in 10 months of lactation in the selected crossbred cows. Average daily milk yield at the first month of lactation was 9.16 kg and the highest daily milk yield of 9.56 kg was observed at the second month of lactation. At the end of the lactation, the lowest yield was 5.01 kg per day and hence the overall average daily milk yield was found to be 7.41 kg. Based on the selection criteria, the Mitscherlich X Exponential model was identified as the best fit model, followed by Ali and Schaeffer and Morant and Gnanasakthy model for prediction of milk production in crossbred dairy cows reared in field conditions and the estimated lactation curve model parameters a, b, c and d values for the best fit model were 331.71, 1519.82, 9.56 and 0.07 kg, respectively. 
  1. Ali, T.E. and Schaeffer, L.R. (1987). Accounting for covariances among test day milk yields in dairy cows. Canadian Journal of Animal Science. 67(3): 637-644.
  2. Anonymous (2013). Estimated livestock population breed wise, based on Breed Survey 2013. Government of India, ministry of agriculture and farmers welfare, department of animal husbandry, dairying and fisheries (Animal Husbandry Statistics Division), Krishi Bhawan, New Delhi.
  3. Anonymous (2017). Annual Report 2016-17. ICAR-Central Institute for Research on Cattle, Grass Farm Road, post box no. 17, Meerut Cantt. - 250001, Uttra Pradesh, India.
  4. Banu, R., Singh, A., Malhotra, R., Gowane, G., Kumar, V., Jaggi, S., Verghese, E., Gandhi, R., Chakravarty, A. and Raja, T (2012). Comparison of different lactation curve models in Karan Fries cattle of India. Indian Journal of Animal Science. 82(11): 1377-1380.
  5. Biswal, S., Thirunavukkarasu, M., Selvam, S., Venkataramanan, R. and A. Serma Saravana Pandian (2017). Modelling lactation curve in jersey crossbred cows, Journal of Entomology and Zoology Studies. 5(6): 1282-1285.
  6. Brody, S., Ragsdale, A.C. and Turner, C.W. (1923). The rate of decline of milk secretion with the advance of the period of  lactation, Journal of General Physiology. 5(4): 441-444.
  7. Chopde, S.S., Datir, R.P. and Patil, M.R. (2019). Strategies for doubling income of Indian Farmers’ through dairying. Asian Journal of Dairy and Food Research. 38(4): 269-272.
  8. Dag, B., Keskin, I. and Mikailsoy, F. (2005). Application of different models to the lactation curves of unimproved Awassi ewes in Turkey. South African Journal of Animal Science. 35(4): 238-243.
  9. Dairying in Tamil Nadu A Statistical Profile (2014). National Dairy Development Board, /files/NDDB_Dairy_Diggest_Tamil_Nadu-12-12-2014_v2%5B1%5D.pdf.
  10. Dave, B.K. (1971). First lactation curves of Indian Water Buffalo. JNKVV Research Journal. 5: 93.
  11. Dohare, A.K., Singh, B., Verma, M.R., Perme, B., Sharma, V.B., Gupta, N., Kshandakar, S. (2014). Comparison of standard lactation curve models using fortnightly milk records in Frieswal cattle, Veterinary World. 7(10): 831-834.
  12. Dongre, V.B., Gandhi, R.S. and Singh, A. (2012). Comparison of different lactation curve models of Sahiwal cows. Turkey Journal of Veterinary and Animal Science. 36(6): 723-726.
  13. Guo, Z. and Swalve, H.H. (1995). Inter bull meeting, Prague, Uppsala, Inter bull Bulletin No.11, Vienna, Austria.
  14. Kocak, O. and Bulent, E. (2008). Comparison of different lactation curve models in Holstein cows raised on a farm in the south-eastern Anatolia region. Arch Tierzucht. 51: 329-337.
  15. Malhotra, P.K., Singh, R.P., Singh, R.N. (1980). Estimating lactation curve in Karan-Swiss cattle. Indian Journal of Animal Sciences. 50(10): 799.
  16. Mohanty, B.S., Verma, M.R., Sharma, V.B. and Roy, P.K. (2017). Comparative study of lactation curve models in crossbred dairy cows. International Journal of Agricultural and Statistics Sciences. 13(2): 545-551.
  17. Morant, S. and Gnanasakthy, A. (1989). A new approach to the mathematical formulation of lactation curves. Animal Production. 49(2): 151-162.
  18. Rook, A., France, J. and Dhanoa, M. (1993). On the mathematical description of lactation curves. Journal of Agricultural Science. 121: 97-102.
  19. Sikka, L.C. (1950). A study of lactation as affected by heredity and environment. Journal of Dairy Research. 17: 231.
  20. Thiruvenkadan, A.K. (2020). Performance of farmbred jersey cattle under tropical climatic conditions of Tamil Nadu. Indian Journal of Veterinary and Animal Sciences Resaerch. 49(2): 20-25.
  21. Vijayakumar, P., Singaravadivelan, A., Silambarasan, P., Ramachandran, M. and Churchil, R. (2019). Production and Reproduction Performances of Crossbred Jersey Cows. Veterinary Research International. 7(2): 56-59.
  22. Wilmink, J. (1987). Comparison of different methods of predicting 305-day milk yield using means calculated from within-herd lactation curves. Livestock Production Science. 17: 1-17.
  23. Wood, P.D.P. (1967). Algebraic model of the lactation curve in cattle. Nature. 216: 164-165.

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