Evaluation of different litter materials for broiler production in a hot and humid environment: 2. Productive performance and carcass characteristics.

The availability of wood by-products for bedding material is falling in many regions due to rising demand for other uses. The objective of this study was to evaluate six alternative litter sources-river bed sand, coconut husk, rice hulls, Guinea grass, newspaper, and corncob-as a substitute for wood shavings (WS). The trial was carried out over 35 days in an open-sided and naturally ventilated broiler house under conditions of high ambient temperatures and relative humidity. During the brooding period (0 to 14 days), chicks raised on grass had lower (P < 0.05) footpad temperature than those grown on WS. After the brooding period (15 to 35 days), the temperatures of both litter and birds were higher (P < 0.05) for coconut husk than for WS. Grass litter resulted in lower (P < 0.05) final BW, FCR, and production efficiency. Sand and rice hulls were associated with lower (P < 0.05) survival rate and higher (P < 0.05) gizzard weight. Litter type did not affect carcass and meat yields. The footpad dermatitis score, associating incidence and severity, was not statistically different among the litter substrates tested, although numerically higher in coconut husk, grass, and corncob. The results obtained in this experiment indicate that, in a hot and humid environment, all materials except grass can be used as a substitute for wood shavings with comparable production efficiency.