Aspectos produtivos e econômicos de poedeiras comerciais submetidas a diferentes densidades de alojamento

Menezes, Pasquoal Carrazzoni de; Cavalcanti, Verônica Fernandes Tenório; Lima, Evilda Rodrigues de; Neto, Joaquim Evêncio

doi:10.1590/s1516-35982009001100023

Cited by 11 publications

(15 citation statements)

References 23 publications

(33 reference statements)

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“…In addition to being one of the foods of lowest cost, it increases the consumption of food of high nutritional value for the low-income population (Pascoal et al, 2008;Menezes, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…According to Campos & Baião (1975), Sauveur (1993) and Santos (2005), temperature and storage time negatively influence the quality of eggs and significantly reduce the Haugh unit, because of the continuous loss of CO 2 . , Morais et al (1997) Leandro et al (2005) and Menezes et al (2009) report that the temperature and relative humidity are the most important factors that affect egg quality during storage. Barbosa et al (2004), evaluating the effect of temperature (ambient and refrigerated) and storage time (0, 7, 14, 21, 28 and 35) on egg quality, verified that the increase of storage time caused reduction in Haugh unit and egg weight.…”

Section: Introductionmentioning

confidence: 99%

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Egg quality of laying hens in different conditions of storage, ages and housing densities

et al. 2012

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-The objective of this research was to evaluate the quality of eggs from Dekalb White hens under different temperatures (room temperature, 25 ºC; and refrigeration, 8 ºC), storage times (7, 14 and 21 days), age of birds (35, 40, 45 and 50 weeks) and housing densities (625, 500, 416.6 and 357.14 cm 2 /birds). Haugh unit (HU) values and albumen height of 1,120 eggs from 528 laying hens, randomly allocated to four groups with different population densities were evaluated. The results showed a significant effect on Haugh units, between the time and storage conditions and between the ages of laying hens and storage condition. Eggs stored in refrigeration showed less weight loss and better Haugh unit indices when compared with eggs stored at room temperature. The increased time of storage, regardless of the temperature, caused loss in their quality. According to the results of this study, based on the evaluation of the albumen height, temperature, storage time, density and age of the layers influence the values of Haugh unit.

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“…In addition to being one of the foods of lowest cost, it increases the consumption of food of high nutritional value for the low-income population (Pascoal et al, 2008;Menezes, 2009).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Egg quality of laying hens in different conditions of storage, ages and housing densities

et al. 2012

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“…Deste modo, produção animal ideal pode ser obtida em ambiente com temperatura adequada, sem qualquer desperdício de energia metabolizável, tanto para compensar o frio como para acionar seu sistema de termorregulação a fim de resistir ao calor ambiental (NÄÄS et al, 2007;MENEZES et al, 2009). Na Tabela 2 apresentam-se as médias da temperatura superficial das aves de acordo com as densidades (aves/gaiolas) e nos períodos do dia (horas) avaliados durante 90 dias.…”

Section: Methodsunclassified

“…Dentre as modernas tecnologias disponíveis para avaliar as condições térmicas de alojamento e sua influência sobre o bem-estar dos animais, encontra-se a termografia infravermelha (EDDY et al, 2001;NÄÄS et al, 2014), sendo utilizada em estudos para se obter as respostas térmicas em diversas espécies (PHILLIPS & HEATH, 2001;FERREIRA, et al, 2011).…”

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Bem-Estar De Galinhas Poedeiras Em Diferentes Densidades De Alojamento

Castilho¹,

Garcia²,

Lima

et al. 2015

Revista Brasileira De Engenharia De Biossistemas

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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

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Influence of laying hen-systems and ecologic variables on mites of medical and veterinary importance

Pavan

Schüssler

Silva³

et al. 2022

Veterinary Parasitology

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Aspectos produtivos e econômicos de poedeiras comerciais submetidas a diferentes densidades de alojamento

Cited by 11 publications

References 23 publications

Egg quality of laying hens in different conditions of storage, ages and housing densities

Egg quality of laying hens in different conditions of storage, ages and housing densities

Bem-Estar De Galinhas Poedeiras Em Diferentes Densidades De Alojamento

Influence of laying hen-systems and ecologic variables on mites of medical and veterinary importance

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