Effect of Stocking Density on Chick Performance, Internal Organ Weights and Blood Parameters in Broilers

Abstract

In the present study, the effect of stocking density on chick performance, internal organ weights and blood parameters were investigated in broilers. A total of 327 Ross 308 broilers divided into 3 stocking density groups (9, 13 and 17 birds m(-2)). The live weight gain of broilers grown at density of 13 birds m(-2) was higher (p<0.01) than those at the other two densities during the 2nd and 3rd weeks (p<0.01). Birds in highest stocking density group (17 birds m(-2)) had the lowest live weight gain of all three groups during the 4th, 5th and 6th weeks (p<0. 01). The difference of livability among groups was not significant (p>0.05). The 17 birds m(-2) stocking density group had better food conversion ratio than 9 and 13 birds m(-2) stocking density groups between 21-42 days. The difference of food conversion ratio between stocking density groups was not significant between 0-21 and 0-42 days (p>0.05). The difference in carcass yield, pH, meat colors (E) and internal organ weights of stocking density groups was not significant (p>0.05). The plasma protein levels were significant among the density groups (p<0.05). In conclusion, 13 birds m(-2) stocking density groups is more suitable than 9 and 17 birds m(-2) stocking density groups in rearing conditions.