&lt;b&gt;Performance, carcass characteristics and litter moisture in broilers housed at two densities

Gopinger, E.; Ávila, V. S. de; Perondi, Dani; Catalan, A. A. da S.; Krabbe, Everton Luís; Roll, Victor Fernando Büttow

doi:10.4025/actascianimsci.v37i1.24732

Cited by 7 publications

(8 citation statements)

References 10 publications

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“…In recent decades, broiler rearing has expanded and higher densities have been used to increase production and decrease fixed costs (Gopinger et al, ). Stocking density is defined as the numbers of birds or weight of birds being reared in a given housing space.…”

Section: Introductionmentioning

confidence: 99%

Response of broiler chickens reared at high density to dietary supplementation with licorice extract and probiotic

Rashidi

Ghorbani

Ahmad

et al. 2018

Animal Physiology Nutrition

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This study evaluated the effects of licorice extract and probiotic on performance, excreta characteristics and welfare‐related parameters of broiler chickens reared in high stocking density. Three hundred and thirty‐six 1‐day old broiler chicks (Ross 308) were used in a completely randomized design with five treatments and four replicates for 42 days. Treatments were as follows: (a) positive control (PC, 12 chicks/m2); (b) negative control (NC, 18 chicks/m2); (c) NC + 500 ppm licorice extract (LE); (d) NC + 200 ppm probiotic (P); (e) NC + ppm LE + ppm P. Body weight gain (BWG) was affected negatively by increased density in the growing period (p < 0.05). At high density, BWG was increased in the growing and whole period by adding LE and P separately and in combination (p < 0.01). Feed conversion ratio (FCR) was not affected by stocking density. Excreta weight (g/bird) and dry matter (DM, %) were reduced by increasing density (p < 0.01). Use of feed additives at high stocking density had no significant effect on excreta weight, but DM content of excreta was higher in NC + LE + P than NC. Gait problems and footpad and hock burns were increased by increased stocking density, but were not altered by feed additives. In conclusion, licorice extract and probiotic improved BWG of broilers reared at high stocking density; however, these birds had some disorders in footpad, hock and walking ability.

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Section: Introductionmentioning

confidence: 99%

Response of broiler chickens reared at high density to dietary supplementation with licorice extract and probiotic

Rashidi

Ghorbani

Ahmad

et al. 2018

Animal Physiology Nutrition

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“…However, the increase in flock density reduced the weight gain in 19-38 days of grow-out and the total time of growth, and in the fall feed conversion was high, on average, 3.27. Gopinger et al (2015) increased density from 11.08 to 13.20 m -2 birds and observed that the flock density did not affect broiler performance in the tested range.…”

Section: Semi-intensive and Extensive Way Of Rearingmentioning

confidence: 84%

Factors that Influence the Production, Environment, and Welfare of Broiler Chicken: A Systematic Review

Baracho¹,

Nääs²,

Betin³

et al. 2018

Braz. J. Poult. Sci.

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The objective of the present study was to characterize the scientific production regarding the factors that influence broiler chicken production, and that were published from 2000 to 2015 in journals indexed in the database of Google Scholar, Scielo, and ScienceDirect. The research was done in the Thermal Comfort Laboratory at FEAGRI-UNICAMP, and the concept of the systematic review was applied. The research criterion was initially defined (the keywords) aiming to identify and evaluate the variables that describe the experimental characteristics and the animals. The primary keywords identified were: broiler chicken from commercial strains, broiler production, rearing conditions, thermal environment, air quality, acoustic environment, light intensity, management, and heat stress. Those were the key words searched in the database of the online libraries. The selected articles were registered into an electronic spreadsheet with the title, the name of the authors, year of publication, language, the journal where it was published, the keyword, the period when the research was done, source/ database, and the abstract. A total of 167 articles were selected, and only 34 were added to the review. The use of the systematic review of the literature allowed identifying the main variables that positively influence the broiler performance, such as the temperature near the thermal comfort, the use of roof lining, besides the use of adiabatic cooling and cast bricks in the laterals. The presence of positive ventilation, as well as the use of yellow curtains and constant lighting, has also influenced a better performance to broilers.

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“…Resultados diferentes podem ser encontrados na literatura, como os de Mendes et al (2012) que verificaram que altas densidades acarretam gravidades nas lesões do coxim plantar de frangos de corte, assim como, Gopinger et al (2015) que observaram que o aumento da densidade de 11,08 para 13,20 aves/m 2 ocasionou maiores ocorrências de lesões, além de favorecer a umidade. Entretanto, Sirriet al (2007) apresentaram resultados semelhantes aos verificados no presente trabalho, em que a densidade de alojamento (11 e 14 aves/m 2 ) não teve influência sobre as lesões de coxim plantar de frangos de corte.…”

Section: Resultsunclassified

Pododermatite em frangos de corte alojados em diferentes materiais de cama em duas densidades

Silva

Brainer

Martins

et al. 2020

BJAER

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RESUMOObjetivou-se avaliar a incidência de lesões de pododermatite no coxim plantar e joelhos de frangos de corte Cobb alojados em diferentes tipos de material de cama aviária em duas densidades de alojamento. Adotou-se o delineamento experimental inteiramente ao acaso, em um esquema fatorial 4 x 2 (quatro tipos de material de cama: areia lavada, maravalha, casca de arroz e feno de capim Tifton 85 triturado e duas taxas de lotação:10 e 14 aves/m2). Foram avaliadas as incidências de pododermatite nos joelhos (tibiotarso-metatarso) e coxim plantar de cinco aves por box aos 21, 28, 35 e 42 dias de criação. Aos 21 e 28 dias, não ocorreram lesões representativas nos joelhos, enquanto que o coxim plantar das aves alojadas em cama de feno apresentaram leves ulcerações. Aos 35 e 42 dias as lesões de joelho e coxim plantares foram mais leves nas aves alojadas em maravalha em comparação às criadas em cama de feno e de areia. Concluindo, frangos alojados em cama de maravalha apresentam menos lesões de pododermatite em comparação a frangos alojados em feno de Tifton e areia e a densidade de alojamento não tem influência sobre a incidência de pododermatite.Palavras-chave: Bem-estar animal, Cama de frango, Coxim plantar. Gallus domesticus, Taxa de lotação.

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<b>Performance, carcass characteristics and litter moisture in broilers housed at two densities

Cited by 7 publications

References 10 publications

Response of broiler chickens reared at high density to dietary supplementation with licorice extract and probiotic

Response of broiler chickens reared at high density to dietary supplementation with licorice extract and probiotic

Factors that Influence the Production, Environment, and Welfare of Broiler Chicken: A Systematic Review

Pododermatite em frangos de corte alojados em diferentes materiais de cama em duas densidades

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