objective of the present study was to determine calving parameters in eighteen large dairy herds of holstein friesian in tabriz. data analysis showed that the mean gestations length were 276.69 ± 6.29, 279.54 ± 8.55 and 271.38 ± 7.34 days in multipara cows and twining pregnancy respectively. percent of premature birth were 24.14% in twining (28 cases out of in 116 births), 9.61% in heifers (114...

Introduction This report from the Center for Competitive Analysis (CCA) of the University of Missouri is intended to provide basic background information about the Boat Building and Repairing (BBR) industry (SIC code 3732, essentially the same as NAICS code 336612, but the latter does not include boat repairing). Nationally, average 1998 weekly earnings for workers in this industry were $465.79...