MODEL DESCRIBING LACTATION TREND OF MILK CASEIN OF MURRAH BUFFALOES

Article Id: ARCC2388 | Page : 264-266
Citation :- MODEL DESCRIBING LACTATION TREND OF MILK CASEIN OF MURRAH BUFFALOES.Indian Journal Of Animal Research.2008.(42):264-266
C.L. Suman, Shiv Prasad, Y.P. Singh and S.B. Prasanna
Address : Agricultural Research Information System Cell, Computer Centre, Indian Veterinary Research Institute, Izatnagar-243 122, India

Abstract

The overall milk casein averaged to 3.02±0.01 per cent showed significant (P<0.01) effect of
month of lactation and years of study. The milk casein (3.23±0.03 per cent) during first month of
lactation decreased successively after calving to its lowest level (2.89±0.03 percent) during fourth
and fifth months and increased thereafter at subsequent months to 3.16±0.04 per cent during tenth
month of lactation. The three measures of fit adjudged gamma type function: Yt = 3.1336 t–0.1716
e0.0400t as best representative nonlinear model explaining lactation trend of milk casein of Murrah
buffaloes. The fitted model to least squares means at ten monthly points of lactation described the
decreasing phase of milk casein after calving to minimum level of 2.89 per cent at 4.30 month of
lactation and increasing phase thereafter in close agreement to its observed trend in milk of
Murrah buffaloes.

Keywords

References

  1. Harvey, W.R. (1966). Least Squares Analysis of Data with Unequal Sub-Class Number. United States Department of Agriculture, Agricultural Research Service, Washington, DC.
  2. Nelder, J.A. (1966). Biometrics, 22:128-141.
  3. Prasad, S. and Singh R.K. (2001). Indian Vet. Med. J., 25:133-136.
  4. Saxena, M.M. et al. (1985). Indian J. Anim. Sci., 55:602-604.
  5. Sikka, L.C. (1950). J. Diary Res., 17:231-252.
  6. Snedecor, G.W. and Cochran, W.G. (1967). Statistical Methods, 6 th Edition Oxford and IBH Pub Co Calcutta, Bombay, New Delhi.
  7. Suman, C.L. et al. (2003a). Indian Vet. Med. J., 27(4):307-310.
  8. Suman, C.L. et al. (2003 b). Indian J. Anim. Res., 37(2):142-44.
  9. Yadav, S.B.S. and Sharma, J.S. (1988). Indian J. Anim. Sci., 58:814-818.
  10. Wood, P.D.P. (1976). Anim. Prod. 22:35-40.

Global Footprints