The objective of this study was to evaluate the thermal comfort of broilers reared under two lighting programs (almost continuous and intermittent) in broiler houses with yellow or blue lateral curtains. The experiment was carried out from June 24, 2004 until May 12, 2005. Six consecutive flocks were housed in four 12 × 10 m broilers houses internally divided into four pens of 200 birds each. Six flocks were raised on the same litter. The registration of data was accomplished […]

The objective of this study was to evaluate the effect of different poultry house heating systems on the thermal comfort and performance of broiler chicks during the winter period, in the southern region of Brazil. Three buildings were used, each containing 17,700 broiler chickens (Cobb), during two complete productive cycles. Three heating systems were evaluated: furnace with indirect air heating; infrared heater and radiant experimental “drum” system with an infrared supplemental heating system. In order to evaluate the thermal environment and […]

This research was carried out with the objective to evaluate the raising systems in deep-bedding (wood shavings and rice husk) and the traditional system of concrete floor, and its influence in the thermal environment (BGTHI [Black Globe Temperature and Humidity Index] and surface temperature of both floor and bed), and swine animal performance from 25 kg to 120 kg. Two hundred sixteen animals were used (Landrace x Large White), 72 per raising system (18 pigs/pen). For comparison, the animals were […]

A study was carried out with the objectives to evaluate the raising system deep-bedding (wood shavings and rice husk), in comparison to the traditional concrete floor in the raising of swine during the growth and finishing phases and to evaluate the animal performance based on BGTHI (Black Globe Temperature and Humidity Index), in the weight gain, ration intake, feed conversion and the water consumption. A total of 216 animals (Landrace ´ Large White) was used, divided in 12 uniform lots, […]