Comparison of growth performance.

<p>(a) Body weight (BW), (b) daily BW gain (ADG), (c) feed intake and (d) feed/BW gain (FCE) of the Daweishan mini chicken and the Wuding chicken breeds, and the commercial Avian broiler hybrid chicken hybrid as a function of age from week 0 to week 12, measured every other week. Statistical significance of difference among chickens at a specific age is indicated by asterisks (*: P<0.05; **: P<0.01). Statistical significance among different ages within a breed or hybrid is indicated with letters (lower case: P<0.05; capitals: P<0.01).