FACTORS AFFECTING REPRODUCTIVE TRAITS IN DEONI AND HOLSTEIN FRIESIAN X DEONI HALFBREDS (F1)
Citation :- FACTORS AFFECTING REPRODUCTIVE TRAITS IN DEONI AND HOLSTEIN FRIESIAN X DEONI HALFBREDS (F1).Indian Journal Of Animal Research.2002.(36):141 - 143
The data of 961 lactation records each of Deoni and Holstein Friesian × Deoni (HF × D) halfbreds spread over a period of 21 years were analysed to assess the influence of farm, season and period of calving on Service Period (SP) and Inter-calving Period (ICP). The least squares means (LSM) for SP and ICP in Deoni and HF × D half-bred cows were 254.40 ± 5.13 and 533.64 ± 5.21 days and 151.23 ± 4.91 and 433.12 ± 5.39 days, respectively. The farm showed highly significant (P0.01) influence on SP in Deoni, while farm and period have highly significant (P0.01) influence on SP in HF × D halfbreds. However, effect of season was not sgnificant on SP in Deoni and HF × D halfbreds. Farm showed highly significant (P0.01) effect on ICP in Deoni as well as HF × D halfbreds. The influence of period of calving was significant (P0.05) in Deoni cattle and highly significant (0.01) in HF×D halfbreds. rhe effect of seaso of calving was no-significant n ICP in Deoni as well as HF × D halfbreds.
- Basu, S.B. eta/. (1979).lndianJ D,airy Sci. , 32:497.
- Bhat, P.N. eta/. (1978).lndianJ Anim. Sci., 48:71.
- Chaudhary, A.L. eta/. (1977).lndianJ"DairySci., 30:274.
- Dalal, D.S. etal. (1991).lndianJ Dairy Sci. , 44:401.
- Deshpande, K.S: and Singh, B.P. (1977). Indian Vet. J, 54:454.
- Deshpande, K.S. and Bonde, H.S. (1982). Indian J Anim. Sci., 53:305.
- Harvey, WR. (1976). Least Squares Analysis of Data with Unequal Sub-class Numbers. Agricultural Research Service,
- United States, Department of Agriculture, Washington, D.C. .
- Kramer, c.Y. (1957). Biometrics, 13:13.
- Lohiya, M.L. (1980). MSc. (Agri.) Thesis, M.A.U. Parbhani.
- Mathur, A.K. and Khosla, S.K. (1994).lndianJ Anim. Sci., 64:1207.
- Nagarcenkar, R. and Rao, M.K. (1982).lndianJ Anim. Sci., 52:129.
- PatH, c.Y. (1983). MSc. Thesis, MAU.Parbhani.
- Rao, AV. et a/. (1984). Indian J Anim. Sci., 54:980.
- Thombre, B.M. (1991). MSc. Thesis, MAU, Parbhani (M.S.).
- Yadav, A.S. eta/. (1992).lndianJ Dairy Sci., 45:522.