Efeito do ambiente de produção sobre frangos de corte sexados criados em galpão comercial

Amaral, Adriana Garcia do; Yanagi, Tadayuki; Lima, Renato Ribeiro de; Teixeira, Vítor Hugo; Schiassi, Leonardo

doi:10.1590/s0102-09352011000300017

Cited by 25 publications

(24 citation statements)

References 17 publications

(12 reference statements)

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“…The incidence of ascites syndrome is also related to the high environmental temperatures, which reduce the ingestion of nutrients and affect the bird metabolism (Lin et al, 2006). When exposed to heat stress, birds increase panting, which may change the metabolism (Nascimento et al, 2009;Amaral et al, 2011).…”

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confidence: 99%

Broiler carcass condemnation pattern during processing

et al. 2019

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This study aimed to identify the influence of climate pattern and rearing conditions on broiler carcass condemnations observed during processing. We evaluated the registered data of 2015 from the federal inspection files in all broiler slaughterhouses located in the state of Mato Grosso do Sul, Midwestern Brazil. The percentages of condemnations by airsacculitis, cellulitis, dermatosis, ascites syndrome, total carcass condemnations, and average broiler weight at 42 days were analyzed. Data were associated with housing systems and season of the year in which each flock was reared. Two-way ANOVA was applied to the data in a completely randomized design 4×3 (four seasons and three houses) and compared by Tukey's test. The results indicated that the housing system did not affect the studied condemnations, and seasons of the year did not change condemnation by airsacculitis; however, the other pathologies leading to carcass condemnations were affected by season. Condemnations by cellulite were higher during summer than in winter. For dermatosis, the maximum index appears during summer and the lowest during winter and spring. The ascites syndrome presented the smallest index in summer and winter, and the minimum value was found in spring. The average bird weight was higher in autumn than in winter and spring. Type of broiler rearing did not affect the carcass condemnation index. Summer was the most detrimental period regarding the condemnation rates for the pathologies studied, mainly cellulitis and dermatosis, while the highest average weight of birds was found during autumn and spring.

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confidence: 99%

Broiler carcass condemnation pattern during processing

et al. 2019

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“…According to Silva et al (2007), the difference of the back temperature can be explained by better feather coverage at the back of females compared to males. According to Amaral et al (2011), males lose more heat to the surrounding environment, thereby increasing their metabolic heat production.…”

Section: Resultsmentioning

confidence: 99%

“…Thus, it is important to determine the influence of different nutritional plans on body temperature variation, since the nutrient density of the diet has great influence on it. It is known that the body and surface/body temperatures of poultry also vary with sex (ALVES, 2012;AMARAL et al, 2011;MACARI et al, 2004), and age (CANGAR et al, 2008;FURLAN, 2001;MARCHINI et al, 2007;SILVA et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Effect of nutrition on the body temperature and relative organ weights of broilers

Martins

Fernandes

Bueno

et al. 2015

SCA

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The objective of this study was to evaluate the effect of different nutritional plans on the body temperature and organ biometrics in male and female broilers, of two ages. Here, 1,700 birds were used (850 males and 850 females) in a completely randomized design composed of five treatments (-3%, -1.5%, reference, + 1.5% and + 3%), with 10 repetitions, totaling 50 experimental units; the reference treatment based on nutritional and energy levels indicated in previous studies was calculated from this. At 35 and 42 d, the temperatures of the wing, head, shin, back, and cloaca in males and females were measured separately, and the average surface and body temperature were calculated. At 42 d, relative weights of the gizzard, liver, heart, and small intestine were calculated. The temperatures of the wings, back, and cloaca, and consequently the average surface temperature and body temperatures, were not affected by nutritional plans. Effects of increasing the nutritional and energy levels were observed on liver weights, the gizzard, and the small intestine. We conclude that the nutritional plans did not affect body temperature. Males had higher body temperatures than females. Body temperature increased with increase in age, and the increase in the nutritional plans increased liver weight and reduced the gizzard weights. Key words: Animal nutrition, body temperature, digestive system, poultry ResumoObjetivou-se avaliar a temperatura corporal e o peso relativo de órgãos em frangos de corte, machos e fêmeas, em duas idades, submetidos a diferentes planos nutricionais. Foram utilizadas 1700 aves (850 machos e 850 fêmeas) distribuídas em um delineamento inteiramente casualizado, composto de cinco tratamentos (-3%, -1.5%, referência, +1.5% e +3%) com 10 repetições, totalizando 50 unidades experimentais; sendo o tratamento referência baseado nos níveis nutricionais e energéticos recomendados por Rostagno et al. (2011) e os demais calculados a partir deste. Aos 35 e 42 dias de idade foram mensuradas as temperaturas da asa, cabeça, canela, dorso e da cloaca nos machos e fêmeas separadamente, e após calculou-se a temperatura superficial média e corporal. Aos 42 dias de idade também foram calculados os pesos relativos da moela, fígado, coração e intestino delgado. As temperaturas de asa, dorso e cloaca não foram afetadas pelos planos nutricionais, e consequentemente as temperaturas superficial média e corporal. Observou-se efeito do aumento dos níveis nutricionais e energéticos nos pesos do fígado, moela e do intestino delgado. Conclui-se que os planos nutricionais não influenciaram a temperatura corporal. Os machos apresentaram maior temperatura corporal que as fêmeas. A temperatura corporal se elevou conforme aumentou a idade. O aumento dos planos nutricionais aumentou o peso do fígado e reduziu o peso da moela.

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“…As the air temperature of the evaluated houses was controlled (Table 1), the results of birds' surface temperature were relatively similar in both houses, which were different only as to the light source applied. The homeothermy in broilers is achieved by maintaining core body temperature close to 41.7 °C (Aerts et al, 2003;Amaral et al, 2011). Studies showed that the differences in broiler surface temperatures are associated with heat loss, as there are physiological changes when homeothermy is affected (Yahav et al, 2005;Cangar et al, 2008).…”

Section: Surface Temperature During the Initial Grow-out Phasementioning

confidence: 99%

“…Ambient temperature influences broiler performance particularly during the last week of the rearing period. Exposure to heat stress reducesfeed intake, consequently impairing broiler performance (Abeyesinghe et al, 2001;Tao & Xin, 2003;Shinder et al, 2007;Amaral et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Broiler Surface Temperature and Behavioral Response under Two Different Light Sources

Araújo

Garcia

Nääs

et al. 2015

Rev. Bras. Cienc. Avic.

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Light is an important environmental variable for the regulation and control of broiler behavior. Some light sources may also add heat to the rearing environment, and indirectly affect the heat exchange between the birds and the environment. This study aimed at investigation the surface temperature and behavioral response of broilers reared in an environment with monochromatic light emitted diode (LED). Broilers were reared inside commercial dark houses under two treatments: fluorescent or LED light sources. Bird surface temperature and behavior was monitoredfrom the first day of grow-out. The houses were virtually divided in four quadrants, and the variables were monitored in the geometric center of each quadrant. Surface temperature results were mapped, behavioral responses were divided as normal and abnormal, and their interaction with light source was tested. Broiler surface temperature in both houses presented lack of homogeneity, independently of the light source. No effect of the light source on any of the evaluated behavior was found in the present study. The long life and energy savings obtained with the LED light source suggest its use in broiler production.

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Efeito do ambiente de produção sobre frangos de corte sexados criados em galpão comercial

Cited by 25 publications

References 17 publications

Broiler carcass condemnation pattern during processing

Broiler carcass condemnation pattern during processing

Effect of nutrition on the body temperature and relative organ weights of broilers

Broiler Surface Temperature and Behavioral Response under Two Different Light Sources

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