Table 6: Effect of feeding diets containing two levels of crude protein (CP) and methionine + cystine (Met + Cys) on body weight gain, feed intake and feed conversion ratio of male or female broiler chicks at 10 d (Experiment 2-2).

TreatmentsBWG (g)Feed intake (g)FCR (g/g)
No.CP (%)Met + Cys (%)malefemalemalefemalemalefemale

123.21.00323.2ab322.3334.8b332.61.0371.032
223.20.90330.5a318.3344.7a336.41.0431.057
3211.00326.5a317.4340.0ab330.11.0421.041
4210.90312.5b318.1339.5ab330.61.0871.039
Pooled SEM3.13.872.33.370.0170.012

Probability

Protein × (Met + Cys) * NS * NSNSNS
ProteinNSNSNSNSNSNS
Met + CysNSNSNSNSNSNS

a–dMeans in each column without common superscripts are significantly different.
*Data are means off our 4 replicates having 50 birds. BWG: Body weight gain, FI: Feed intake, FCR: Feed conversion ratio, CP: Crude protein, Met + Cys: Methionine + Cystine, NS: Not-statistically significant; * .