Both LW and FI were determined weekly. These performance data were then subject to linear regression with time (weeks) as the x axis and either LW or FI as the y axis. LW and FI per week were then calculated by solving the derived linear regression equations. Feed conversion ratio (FCR) was calculated on a weekly basis by dividing FI by LW. The resultant weekly FCR data were then subject to linear regression, The slopes of which were then subject to analysis of variance to separate treatments. A level of p