Influência de materiais de cobertura e de alturas de cama, nos índices de conforto térmico e no desempenho de frangos de corte, em Dourados - MS
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Data
2001-08
Autores
Rosa, Yara Brito Chaim Jardim [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
Avaliaram-se os efeitos de dois ciclos de criação, de três materiais de cobertura (cimento amianto, cimento amianto com pintura branca na face externa e alumínio) e de quatro quantidades de cama de frango (0,4; 0,5; 0,6 e0,7 kg MSave-1), sobre os índices de conforto térmico, a qualidade da cama de frango e o desempenho de frangos machos da linhagem “Ross”, durante as épocas quente e fria, em Dourados-MS. O experimento foi analisado como inteiramente casualizado, em parcelas sub-subdivididas. Para a avaliação dos índices de conforto ambiental foram consideradas como parcelas os dois ciclos de criação, como subparcelas os materiais de cobertura e como sub-subparcelas os horários das observações, com seis repetições. Para avaliar o desempenho animal e a qualidade da cama de frango foram consideradas como parcelas os ciclos de criação, como subparcelas os três materiais de cobertura e como sub-subparcelas as quatro quantidades de cama, com seis repetições. Durante o período experimental foram estudados diariamente, das 6:00 às 18:00 horas, com intervalos de 2 horas, no exterior e no interior dos galpões, o índice de temperatura do globo e umidade, a carga térmica de radiação, a temperatura de bulbo seco, a temperatura de globo negro, a temperatura do material de cobertura, a umidade relativa do ar e a velocidade do vento. No mesmo período e nos mesmos horários foi registrada a temperatura retal da aves. Semanalmente, em cada quantidade de cama, foram avaliados o peso corporal, o consumo de ração, a conversão alimentar e a mortalidade das aves, bem como os teores de matéria seca, de umidade, de proteína bruta e o potencial para emissão de amônia do material utilizado como cama de frango. Pelos resultados obtidos verificou-se que não houve efeito dos três materiais de cobertura sobre os valores de ITGU e de CTR... .
The effect of two cycles of raising, three covering materials (asbestos cement tile, asbestos cement tile with white painting on external side and aluminum tile) and four quantities of chicken manure (0.4; 0.5; 0.6 and 0.7 kg.DM.avian-1) was evaluated on environmental comfort index, chicken manure quality and on performance of “Ross” line males during hot and cold seasons in Dourados – MS. The experiment was analyzed as completely randomized in split plots. For evaluation of environmental comfort index, it was considered two cycles of raising as plots, covering materials as subplots and hours of observation as sub-subplots, with six replications. To evaluate broiler performance and chicken manure quality, it was considered cycle of raising as plots, three covering materials as subplots and four quantities of dried matter.avian-1 as sub-subplots, with six replications. During experimental period black globe – humidity index (BGHI), radiant heat load (RHL), dried bulb temperature, black globe temperature, covering material temperature, humidity index and wind velocity were studied daily from 6:00 A.M. to 6:00 P.M. at two hour intervals, inside and outside aviaries. Concomitantly, rectum temperature of broilers was recorder. Weekly, in each quantity of dried matter (DM). avian-1, body weight, ration consumption, feed conversion and mortality of broilers were evaluated, as well dried matter, dampness, ammonia and gross protein contents of used materials as chicken manure. By obtained results, there was not effect of three covering materials on BGHI and RHL observed values in two cycles of raising in hot and cold seasons. The highest contents of gross protein at the end of raising cycles were observed in manure with 0.4 kg DM.avian-1 and the lowest ammonia contents were registered in aviary with aluminum tile... (Complete abstract, click electronic address below).
The effect of two cycles of raising, three covering materials (asbestos cement tile, asbestos cement tile with white painting on external side and aluminum tile) and four quantities of chicken manure (0.4; 0.5; 0.6 and 0.7 kg.DM.avian-1) was evaluated on environmental comfort index, chicken manure quality and on performance of “Ross” line males during hot and cold seasons in Dourados – MS. The experiment was analyzed as completely randomized in split plots. For evaluation of environmental comfort index, it was considered two cycles of raising as plots, covering materials as subplots and hours of observation as sub-subplots, with six replications. To evaluate broiler performance and chicken manure quality, it was considered cycle of raising as plots, three covering materials as subplots and four quantities of dried matter.avian-1 as sub-subplots, with six replications. During experimental period black globe – humidity index (BGHI), radiant heat load (RHL), dried bulb temperature, black globe temperature, covering material temperature, humidity index and wind velocity were studied daily from 6:00 A.M. to 6:00 P.M. at two hour intervals, inside and outside aviaries. Concomitantly, rectum temperature of broilers was recorder. Weekly, in each quantity of dried matter (DM). avian-1, body weight, ration consumption, feed conversion and mortality of broilers were evaluated, as well dried matter, dampness, ammonia and gross protein contents of used materials as chicken manure. By obtained results, there was not effect of three covering materials on BGHI and RHL observed values in two cycles of raising in hot and cold seasons. The highest contents of gross protein at the end of raising cycles were observed in manure with 0.4 kg DM.avian-1 and the lowest ammonia contents were registered in aviary with aluminum tile... (Complete abstract, click electronic address below).
Descrição
Palavras-chave
Frango de corte - Dourados (MS), Conforto termico, Frango de corte - Desempenho, Ave domestica - Dourados (MS) - Instalações
Como citar
ROSA, Yara Brito Chaim Jardim. Influência de materiais de cobertura e de alturas de cama, nos índices de conforto térmico e no desempenho de frangos de corte, em Dourados - MS. 2001. xxii, 148 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, 2001.