Production Characteristics of Crossbred, Backcross, and Purebred Red Sindhi Cattle in the Gangetic Plains Region

Reproductive Efficiency of Jerseys, Red Sindhis, and Crossbreds

“…Even though the value for Sindhis was high, it was 100 to 200 days less than generally reported for the breed (19,20,21). In India, the onset of estrus for Sindhis was reduced from 795 to 726 days by improved feeding (13).…”

“…In India, first generation crosses by Brown Swiss, Holstein, or Jersey sires markedly have excelled native types in age at puberty and age at first calving, with some reduction in calving interval and services per conception (2,7,15,19,20,21). Heterosis could not be estimated since females of both parents were not present, but the magnitude of the regression coefficients for F 1 and backcrosses indicate heterosis may be higher than for dairy crosses in the U. S.…”

The performance of crosses of Bos taurus and Bos indicus cattle for milk production in the coastal region of Tanganyika

“…Under Jamaican conditions, the optimum proportion of Friesian blood was found to be 50 %, while Jersey blood up to the 75 % level could be carried without detriment to productivity. Under Indian conditions (Tandon, 1951, Stonaker, Agarwala andSundaresan, 1953), Friesian-Sindhi crosses with f Friesian blood and ^-bred JerseySinhdis gave the best results.…”