Studies on Repeatability of Production Traits in Holstein Friesian X Deoni Interse Crossbred Cattle

摘要

India has a pride possession of a large livestock wealth, both in terms of number as well as diversity. This is endeavored, with the complexity, to sustain under hard conditions with scares resources. Livestock production is more impressive than thatof food grain production. The activity of livestock production is largely confined to the rural sector. In the present study systematic record in respect to LMY, PMY, DAPMY, LP and DP was taken from the pedigree sheets and daily milk yield record maintained at CCBP farm. In all records of 71 Holstein Friesian x Deoni interse crossbred dams with 185 lactations over a period of 16 years (1992 to 2007) were utilized for study. The data were classified in to the four period and season. For the statistical analysis of data the Statistical Analysis System (SAS, 2002) software programme is utilized. The repeatability of LMY in Holstein Friesian x Deoni Interse crossbred cows was observed as 0.39 ± 0.06 which was medium and PMY, LP and DP has low. The mediumand low R values have indicated that higher amount of within individual variance.