TY - BOOK AU - GURBACHAN Lal TI - Comparative reproductive efficiency of sahiwal and holstein-friesian x sahiwal crossbred cattle U1 - T 636.234 G96C PY - 1975/// CY - Ludhiana PB - P.A.U KW - CATTLE BREEDING KW - CATTLE KW - EFFICIENCY KW - HOLSTEIN -- FRIESIAN CATTLE KW - REPRODUCTION KW - SAHIWAL N2 - Reproductive efficiency of Sahiwal and different genetic groups of Holstein-Friesan x Sahiwal crossbreds were compared in this study. The data were collected from various Military Dairy Farms and extends over a period of 14 years from 1960 to 1973. Least- ER -