Abstract
Broilers production suffered, due to major investments in technology and genetic development in recent decades, to adapt to the conditions and requirements of the national and world market. Studies on the production systems of reraring show the importance of the economy in the sector, which is one of the most competitive in the agribusiness sector. The present work aimed at studying two dark house aviaries construction, with and without thermal insulation, to evaluate the variations in temperature, gas consumption, and effect of the insulation. Both facilities were checked for temperature variation, using J-type thermocouple sensors and recording in datalogger; LPG consumption, and the production performance considering mortality of birds, feed consumption, water intake, and weight gain. It was concluded that the Dark House with Thermal Insulation (DHTI) aviary showed better broiler birds performance indexes, lower mortality, and greater weight gain. But when it comes to performance in the face of temperature conditions, the Conventional Dark House (CDH) aviary showed values better suited to the production, as noted in the bibliographic references.
Highlights
Technological advances in Brazilian poultry industry in recent decades have been decisive for the segment to consolidate itself as one of the most competitive in the agro-industrial sector
It is observed that the highest external temperature recorded was 38.1 oC, on the first day of confinement (08/01), and the highest internal temperatures recorded were on the second day (09/01), where in the Conventional Dark House (CDH) aviary registered 31.4 oC, and the Dark House with Thermal Insulation (DHTI) aviary 35.1 oC
It can be concluded that the average temperatures of the Conventional Dark House (CDH) aviary were within the comfortable temperature range as highlighted by Yahav (2002), and Macari and Furlan (2001)
Summary
Technological advances in Brazilian poultry industry in recent decades have been decisive for the segment to consolidate itself as one of the most competitive in the agro-industrial sector. In 2018 alone, Brazil exported a total volume of 4,101 million tons of chicken meat, amounting to US $ 6.571 billion. The state of Paraná produced about 4.56 million tons of chicken meat, representing around 35.47% of chicken meat in the country. The total national production of chicken meat reached 12.86 million tons in 2018. Genetic improvements; investments in technology; and care for health, nutrition, environment, and better quality of management justify this lead and potential. The environment plays an important role on production, as an inadequate environment leads to a drop in production and meat quality, incurres losses to the producer (Souza, 2005)
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