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Analysis of lactation shapes in extended lactations

  • R. Steri (a1), C. Dimauro (a1), F. Canavesi (a2), E. L. Nicolazzi (a2) (a3) and N. P. P. Macciotta (a1)...

Abstract

In order to describe the temporal evolution of milk yield (MY) and composition in extended lactations, 21 658 lactations of Italian Holstein cows were analyzed. Six empirical mathematical models currently used to fit 305 standard lactations (Wood, Wilmink, Legendre, Ali and Schaeffer, quadratic and cubic splines) and one function developed specifically for extended lactations (a modification of the Dijkstra model) were tested to identify a suitable function for describing patterns until 1000 days in milk (DIM). Comparison was performed on individual patterns and on average curves grouped according to parity (primiparous and multiparous) and lactation length (standard ⩽305 days, and extended from 600 to 1000 days). For average patterns, polynomial models showed better fitting performances when compared with the three or four parameters models. However, LEG and spline regression, showed poor prediction ability at the extremes of the lactation trajectory. The Ali and Schaeffer polynomial and Dijkstra function were effective in modelling average curves for MY and protein percentage, whereas a reduced fitting ability was observed for fat percentage and somatic cell score. When individual patterns were fitted, polynomial models outperformed nonlinear functions. No detectable differences were observed between standard and extended patterns in the initial phase of lactation, with similar values of peak production and time at peak. A considerable difference in persistency was observed between 200 and 305 DIM. Such a difference resulted in an estimated difference between standard and extended cycle of about 7 and 9 kg/day for daily yield at 305 DIM and of 463 and 677 kg of cumulated milk production at 305 DIM for the first- and second-parity groups, respectively. For first and later lactation animals, peak yield estimates were nearly 31 and 38 kg, respectively, and occurred at around 65 and 40 days. The asymptotic level of production was around 9 kg for multiparous cows, whereas the estimate was negative for first parity.

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Corresponding author

E-mail: rsteri@uniss.it

References

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Ali, TE, Schaeffer, LR 1987. Accounting for covariances among test day milk yields in dairy cows. Canadian Journal of Animal Science 67, 637644.
Auldist, MJ, O'Brien, G, Cole, D, Macmillan, KL, Grainger, C 2007. Effects of varying lactation length on milk production capacity of cows in pasture-based dairying systems. Journal of Dairy Science 90, 32343241.
Bertilsson, J, Svennersten-Sjaunja, K, Wiktorsson, H, Berglund, B, Ratnayake, G 1997. Optimising lactation cycles for the existing high-yielding dairy cow. A European perspective. Livestock Production Science 50, 513.
Brotherstone, S, Thompsonb, R, Whitea, IMS 2004. Effects of pregnancy on daily milk yield of Holstein–Friesian dairy cattle. Livestock Production Science 87, 265269.
Butler, ST, Shalloo, L, Murphy, JJ 2010. Extended lactations in a seasonal-calving pastoral system of production to modulate the effects of reproductive failure. Journal of Dairy Science 93, 12831295.
Cole, JB, Null, DJ 2009. Genetic evaluation of lactation persistency for five breeds of dairy cattle. Journal of Dairy Science 92, 22482258.
Dematawewa, CMB, Pearson, RE, VanRaden, PM 2006. Modeling extended lactations in Holsteins. Journal of Dairy Science 89 (Suppl. 1), 9697.
Dematawewa, CMB, Pearson, RE, VanRaden, PM 2007. Modeling extended lactations of Holsteins. Journal of Dairy Science 90, 39243936.
Dijkstra, J, France, J, Dhanoa, MS, Maas, JA, Hanigan, MD, Rook, AJ, Beever, DE 1997. A model to describe growth patterns of the mammary gland during pregnancy and lactation. Journal of Dairy Science 80, 23402354.
Dobson, H, Smith, RF, Royal, MD, Knight, CH, Sheldon, IM 2007. The high-producing dairy cow and its reproductive performance. Reproduction in Domestic Animals 42, 1723.
Erb, HN, Smith, RD, Oltenacu, PA, Guard, CL, Hillman, RB, Powers, PA, Smith, MC, White, ME 1984. Path model of reproductive disorders and performance, milk fever, mastitis, milk yield, and culling in Holstein cows. Journal of Dairy Science 68, 33373349.
Gonzalez-Recio, O, Perez-Cabal, MA, Alenda, R 2004. Economic value of female fertility and its relationship with profit in Spanish dairy cattle. Journal of Dairy Science 87, 30533061.
Grossman, M, Koops, WJ 2003. Modeling extended lactation curves of dairy cattle: a biological basis for the multiphasic approach. Journal of Dairy Science 86, 988998.
Haile-Mariam, M, Goddard, M 2008. Genetic and phenotypic parameters of lactations longer than 305 days (extended lactations). Animal 2, 325335.
Knight, H 2005. Extended lactation: turning theory into reality. Advances in Dairy Technology 17, 113124.
Lucy, MC 2001. Reproductive loss in high-producing dairy cattle: Where will it end? Journal of Dairy Science 84, 12771293.
Macciotta, NPP, Vicario, D, Cappio-Borlino, A 2005. Detection of different shapes of lactation curve for milk yield in dairy cattle by empirical mathematical models. Journal of Dairy Science 88, 11781191.
Macciotta, NPP, Miglior, F, Dimauro, C, Schaeffer, LR 2010. Comparison of parametric, orthogonal, and spline functions to model individual lactation curves for milk yield in Canadian Holsteins. Italian Journal of Animal Science 9, 460464.
Muir, BL, Kistemaker, G, Van Doormaal, BJ 2004. Estimation of genetic parameters for the Canadian Test Day Model with Legendre polynomials for Holsteins based on more recent data. Report to the Dairy Cattle Breeding and Genetics Committee and the Genetic Evaluation Board, March 2004. Retrieved September 8, 2011, from http://cgil.uoguelph.ca/
Muir, BL, Kistemaker, G, Jamrozik, J, Canavesi, F 2007. Genetic parameters for a multiple-trait multiple-lactation random regression test-day model in Italian Holsteins. Journal of Dairy Science 90, 15641574.
Olori, VE, Brotherstone, S, Hill, WG, McGuirk, BJ 1999. Fit of standard models of the lactation curve to weekly records of milk production of cows in a single herd. Livestock Production Science 58, 5563.
Reinhardt, F, Liu, Z, Bünger, A, Dopp, L, Reents, R 2002. Impact of application of a random regression test-day model to production trait genetic evaluations in dairy cattle. In Proceedings of the Interbull Meeting 27, Interlaken, Switzerland, pp. 103–108.
Rook, AJ, France, J, Dhanoa, MS 1993. On the mathematical description of lactation curves. Journal of Agricultural Science 121, 97102.
Schaeffer, LR 2004. Application of random regression models in animal breeding. Livestock Production Science 86, 3545.
Schaeffer, LR, Jamrozik, J, Kistemaker, GJ, Van Doormaal, BJ 2000. Experience with a test day model. Journal of Dairy Science 83, 11351144.
Silvestre, AM, Petim-Batista, F, Colaco, J 2006. The accuracy of seven mathematical functions in modeling dairy cattle lactation curves based on test-day records from varying sampling schemes. Journal of Dairy Science 89, 18131821.
Stanton, TL, Jones, LR, Everett, RW, Kachman, SD 1992. Estimating milk, fat, and protein lactation curves with a test day model. Journal of Dairy Science 75, 16911700.
VanRaden, PM, Dematawewa, CMB, Pearson, RE, Tooker, ME 2006. Productive life including all lactations and longer lactations with diminishing credits. Journal of Dairy Science 89, 32133220.
Vargas, B, Koops, WJ, Herrero, M, van Arendonk, JAM 2000. Modeling extended lactations of dairy cows. Journal of Dairy Science 83, 13711380.
Veerkamp, RF, Emmans, GC, Cromie, AR, Simm, G 1995. Variance components for residual feed intake in dairy cows. Livestock Production Science 41, 111120.
Wilmink, JBM 1987. Adjustment of test-day milk, fat and protein yield for age, season and stage of lactation. Livestock Production Science 16, 335348.
Wood, PDP 1967. Algebraic models of the lactation curves in cattle. Nature 216, 164165.
Wood, PDP 1968. Factors affecting persistency of lactation in cattle. Nature 218, 894.

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