International trade in broiler' feet, mainly to Asian markets, has demanded better quality control. The objective of this research was to study the suitability of using chicken footpad surface temperature to determine early lesions of pododermatitis. The project was conducted in two houses A1 and A2) in a commercial farm during one production flock. A1 had reused litter of wood shavings and rice hulls, and A2 had a new litter of sawdust. Both houses had positive pressure ventilation. The inner area of the poultry was virtually divided into three quadrants. The footpads were checked for the feet quality, and a degree of pododermatitis was awarded. Thermal images were made to test the surface temperature of the foot and identify inflammation in a total of 30 birds per house, at ages 5, 19, 29, 28 and 40 days of grow-out. Conditions of the rearing environment as well as the surface temperature of the litter, litter moisture, and degree of compression, were recorded. The environment within the houses did not differ. The surface temperatures of the footpad did not differ between the groups. The minimum footpad surface temperatures within the scores were similar, except for the score 3, which did not occur in A1. There was a prevalence of severe injury in the house with a new litter. KEYWORDS: rearing ambient, sub-clinical lesions, thermal image USO DA TERMOGRAFIA INFRAVERMELHO NA IDENTIFICAÇÃO DE PODODERMATITE EM FRANGO DE CORTERESUMO: O comércio internacional de pés de frangos, sobretudo para os mercados asiáticos, demanda maior controle de qualidade. O objetivo da pesquisa foi estudar o uso de temperatura superficial dos pés de frangos de várias idades, para identificar a presença de lesões de pododermatite. O projeto foi feito em dois galpões de uma granja comercial durante um lote. Os aviários eram similares (A1 e A2). A1 tinha cama reusada de maravalha e casca de arroz e A2, cama nova de pó de serra. Os aviários tinham ventilação de pressão positiva. A área interna dos aviários foi dividida em três quadrantes. Os coxins foram checados para avaliara a qualidade dos pés sendo atribuído o grau de pododermatite. Imagens térmicas foram feitas para testar a temperatura superficial do pé e identificar a lesão em 30 aves por aviário nas idades de 5; 19; 29; 28 e 40 dias. Foram registradas a ambiência do alojamento, a temperatura da cama e sua compactação. O ambiente dos aviários não diferiu. As temperaturas superficiais dos pés das aves não diferiram entre os grupos. As temperaturas superficiais mínimas dentro dos escores eram similares, com exceção do escore 3, que não teve em A1. Houve prevalência de mais injúrias severas no aviário com cama nova.
RESUMOO estudo foi realizado com objetivo de avaliar os parâmetros fisiológicos de poedeiras alojadas em diferentes densidades de alojamento e períodos. Foram utilizadas 150 poedeiras Dekalb White com 20 semanas de idade alojadas em um galpão convencional com gaiolas metálicas com duas subdivisões de 50x45x40 cm 2 e distribuídas em três tratamentos: 8 aves por gaiola (562,5 cm 2 /ave); 10 aves por gaiola (450 cm 2 /ave) e 12 aves por gaiola (375 cm 2 /ave), com cinco repetições cada. Avaliaram-se parâmetros fisiológicos (frequência respiratória, temperatura cloacal e temperatura superficial) e condições ambientais (temperatura ambiente e umidade relativa) durante três ciclos de 28 dias. Adotou-se um delineamento inteiramente casualizado com arranjo fatorial 3x3 (três densidades de alojamento e três períodos). Os resultados demonstraram que a densidade de alojamento não prejudicou a frequência respiratória e a temperatura superficial, porém, a temperatura cloacal diferiu significativamente, sendo superior às 16 horas e a densidade de alojamento com 10 aves/gaiola permaneceu intermediário às outras densidades. Os parâmetros voltados à busca do conforto térmico evidenciaram que nos horários mais quentes do dia (até as 16:00 horas), independente da densidade, as aves apresentaram temperaturas maiores que na parte da manhã. Palavras-chave: produção de ovos, conforto térmico, condições ambientais WELFARE OF LAYING HENS IN DIFFERENT DENSITIES OF HOUSING ABSTRACTThe study was carried with objective to evaluate the physiologic parameters of bird laying housed on different housing density and period. Were used 150 Dekalb White bird laying with 20 weeks of age was housed on conventional aviary with metallic cages with two subdivision of 50x45x40 cm² and distribution on three treatments: 8 bird laying by cage (562,5 cm²/bird); 10 bird laying by cage (450 cm²/bird) and 12 bird laying by cage (375 cm²/bird), with five repetition each. Were evaluated physiologic parameters (respiratory frequency, cloacal temperature and superficial temperature) and ambience (environmental temperature and relative humidity) during three circles of 28 days. Was adopted a randomized design with factorial arrangement 3x3 (three housing density and three periods). The results demonstrate that the housing density not impaired the respiratory frequency and superficial temperature, however the cloacal temperature differed significantly, being higher at four p.m. nilsa
Pain is considered a condition that most affect the welfare of animals and its measurement is seen as a difficult task. This research aimed to determine the level of pain in pigs by their vocalization. It was recorded the vocalizations of 20 male piglets under normal circumstances (I), marking by Australian method (II), tail trimming management (III), and castration (IV). A unidirectional microphone and a digital recorder were used to record the sound signals. The results suggested that Pitch frequency (Hz), the maximum amplitude (Pa), and intensity (dB) increased from pain-free pigs to the marking procedure; and from marking to both tail trimming and castration The tail trimming and castration vocal response did not differ.
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