Sustainability of milk production in Surti buffalo on an organized farm
Keywords:
Bubalus bubalis, buffaloes, lactation curve, persistency, Surti buffaloAbstract
Lactation curve and persistency of the lactation are the important parameters to study the sustainability of the lactation. The present study is based on daily milk production records for 298 lactations (maximum four lactations per animal) from 130 buffaloes belonging to 15 sires. Statistical Packages for Social Sciences (SPSS) programme was used to prepare the lactation curve. Two most widely applied functions to study the lactation curve in Indian buffaloes i.e. gamma and inverse polynomial functions, were fitted to the daily milk yield records of the animals under study. Persistency was studied by carrying out simple analysis through Microsoft Excel 2000 on the weekly milk yield records of the animals. Gamma function was found to be more effective with higher R2 value for all the four lactations to prepare the lactation curve as compared to inverse polynomial function. The value of persistency was found to be ranging from 97.94% to 98.56% for the fourth lactation to the first lactation, respectively. So it was concluded that gamma function can be effectively used to establish lactation curve and predict milk yield of animals on any day of lactation and Surti buffaloes as fairly persistent in milk production throughout the lactations.
Downloads
Metrics
References
Berrocal, M.M., H. Tonhati, R.A. Borquis and N.H. Lugo. 2008. Uso de modelos lineales y no lineales para el estudio de la curva de lactancia en búfalos Murrah y sus cruces en sistemas de cría extensiva en el estado de São Paulo, 20(9). Available on: https://repositorio.unesp.br/bitstream/ handle/11449/70563/2-s2.0-51149093306.pdf?sequence=1&isAllowed=y
Bhat, P.N. and R. Kumar. 1980. Comparative efficiency of various mathematical functions on adjusted lactation curve in Indian buffaloes. Indian J. Dairy Sci., 33(3): 408-409.
Dimauro, C., G. Catillo, N. Bacciu and N.P.P. Macciotta. 2005. Fit of different linear models to the lactation curve of Italian water buffalo. Ital. J. Anim. Sci., 4(2): 22-24. DOI: 10.4081/ijas.2005.2s.22
Das, A, D. Das, R.N. Goswami and D. Bhuyan. 2007. Persistency of Milk Yield and its correlation with certain economic traits in Swamp buffaloes of Assam. Buffalo Bull., 26(2): 36-39. Available on: http://ibic.lib.ku.ac.th/e-Bulletin/IBBU200700009.pdf
Dave, B.K. and C.M. Taylor. 1975. A study on relationship of persistency with other first production traits in Indian water buffaloes. Indian Journal of Animal Health, 14(1): 77-80.
Dhaka, S.S. and S.R. Chaudhry. 1994. Non-genetic factors influencing persistency of lactation in Murrah buffaloes. Indian J. Anim. Res., 28(2): 117-121.
Elmaghraby, M.M.A. 2010. Lactation persistency and prediction of total milk yield from monthly yields in Egyptian buffaloes. Lucrari Stiintifice. Seria Zootehnie, 53(15). Available on: http://www.univagro-iasi.ro/ revista_zoo/ro/documente/ Pdf_vol2/ Z045_M_Elmaghraby.pdf.
Khan, F.H. and K.S. Johar. 1985. Persistency of first and second lactations in Murrah buffaloes. Indian J. Anim. Sci., 55(3): 201-203.
Kumar, R. and P.N. Bhat. 1979. Lactation curve in Indian buffaloes. Indian J. Dairy Sci., 32(2): 156-160.
Nelder, J. A. 1966. Inverse polynomials, a useful group of multifactor response functions. Biometrics, 22: 128
Pradhan, V.D. and A.D. Dave. 1973. A study on the lactation curve and the rate of decline in milk yield in Kankrej cattle. Indian J. Anim. Sci., 43: 914-917.
Sahoo, S.K., A. Singh, S.K. Dash and G.S. Ambhore. 2018. Modeling lactation curve for genetic evaluation of Murrah buffaloes. Indian J. Anim. Res., 52: 1675-1679. DOI: 10.18805/ijar.B-3432
Suhail, S.M., M. Syed and M. Amjad. 1998. Lactation curves and persistency of lactation in Nili-Ravi buffaloes. Sarhad Journal of Agriculture, 14(5): 407-410.
Vij, P.K., M.S. Tiwana and M.S. Bhullar. 1985. Factors affecting shape of lactation curve in buffaloes. Asian Journal of Dairy Research, 4(2): 111-115.
Wood, P.D.P. 1967. Algebraic model of the lactation curve in cattle. Nature, 216(5111): 164-165. DOI: 10.1038/216164a0
Yadav, B.S., F.H. Khan and M.C. Yadav, 1995. Lactation curve in Murrah buffaloes. Indian J. Dairy Sci., 48(9): 570-571.