Índice produtivo e qualidade de ovos de galinhas poedeiras submetidas a diferentes métodos de debicagem

Filho, Javer Alves Vieira; Garcia, Edivaldo Antônio; Oba, Eunice; Santos, Tiago Antônio dos; Silva, Anderson Pontes; Molino, Andréa de Britto; Paz, Ibiara Correia de Lima Almeida; Baldo, Grace Alessandra de Araújo

doi:10.1590/s0100-204x2016000600008

Cited by 7 publications

(9 citation statements)

References 15 publications

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“…This result differs from the one found by Vieira Filho et al (2016), during the 63 rd week of life of the birds due to the conventional method of Hot Blade and Infrared Radiation, where they found an 8% drop in the viability of the lots.…”

Section: Performance Of Commercial Laying Hen Submitted To Different contrasting

confidence: 95%

“…Vieira Filho et al (2016), found similar results when comparing conventional Hot Blade and Infrared Radiation (IR) debeaking. However, in the study, IR was a viable option when compared to Hot Blade (HB), since it did not alter the productive performance nor the egg quality.…”

Section: Resultsmentioning

confidence: 77%

“…Vieira Filho et al (2016) also reports, results similar to not observing cannibalism when not performing the procedure of the second debeaking. It reports that it exerts minimal negative effects on the productive performance of commercial laying hens, as it did not observe frequency of cannibalism among the birds and only the body mass and the length of the beak were altered by the application of debeaking in the rearing.…”

Section: Performance Of Commercial Laying Hen Submitted To Different mentioning

confidence: 73%

“…Less invasive methodologies have been developed, such as the treatment of the beak by infrared radiation (IR), which shows benefits such as the absence of bleeding (Vieira Filho et al, 2016). The technique is performed in the hatchery on the first day of life and is recently being tested (Denis et al, 2009;Denis & Cheng, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, it is important to note that the presence of infrared light in the corneal tissue of the beak causes necrosis, with the advantage of a gradual fall of the beak, providing adaptability to the new form (Marchant-Forde et al, 2008;Angevaare et al, 2012). Vieira Filho et al (2016) compared the use of infrared radiation and hot blade with the withdrawal of the second debeaking in the 10th week of life. They verified the absence of cannibalism with the IR debeaking procedure, but they noticed an 8% decrease in viability on the 63 rd week of age of the birds.…”

Section: Introductionmentioning

confidence: 99%

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Performance of Commercial Laying Hen Submitted to Different Debeaking Methods

Oka

Bueno

Souza

et al. 2017

Rev. Bras. Cienc. Avic.

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Among the several factors required in breeding laying hens, debeaking is a factor that interferes with batch performance and affects animal welfare. Thus, the objective of this study was to evaluate three different debeaking procedures and to verify the best technique to be used. For this, the performance of the birds, the incidence of cannibalism, and in rearing phase, the quality of the eggs were evaluated. Dekalb White birds were distributed in a completely randomized design with three treatments, T1 (infrared radiation debeaking) T2 (hot blade debeaking) and T3 (V debeaking).The data was submitted to Analysis of Variance and compared by Tukey's test (95%), using statistical software R. The frequencies of mortality and cannibalism were submitted to the ChiSquare test (Software R). It was observed that mortality was lower with IR debeaking in the breeding phase. Already in the rearing phase, the mortality was similar between the debeaking techniques and the cannibalism was null. The final mean weight (g), mean weight gain (g) and average daily weight gain in the rearing and egg quality variables were higher for V debeaking when compared to other techniques. It is concluded that V-debeaking provides better bird performance, resistance and shell thickness when compared to the infrared radiations and hot blade debeaking, in addition to subjecting the birds to less stress.

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Section: Performance Of Commercial Laying Hen Submitted To Different contrasting

confidence: 95%

Section: Resultsmentioning

confidence: 77%

Section: Performance Of Commercial Laying Hen Submitted To Different mentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance of Commercial Laying Hen Submitted to Different Debeaking Methods

Oka

Bueno

Souza

et al. 2017

Rev. Bras. Cienc. Avic.

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Evaluation of different light intensities on the well-being, productivity, and eggs quality of laying hens

Bahuti,

Yanagi Junior,

Fassani

et al. 2023

Computers and Electronics in Agriculture

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Current methods and techniques of beak trimming laying hens, welfare issues and alternative approaches

Glatz

Underwood²

2020

Anim. Prod. Sci.

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Beak trimming is used in the egg industry to prevent mortality from cannibalism and minimise injurious pecking, vent pecking, aggressive pecking at the head and all forms of feather pecking, although the practice does not completely reduce the damage. There are alternatives to beak trimming, but they have not been reliable in preventing injurious pecking. However, beak trimming should not be used without providing birds enriched indoor and outdoor environments. Even when birds are beak trimmed, providing enriched facilities is recommended. The two main methods of beak trimming are hot blade (HB) and infrared beak treatment (IRBT). HB trimming removes the beak tips and cauterises the beak stump. The IRBT method uses heat from an infrared lamp to treat the outer beak and the underlying tissue. Initially, the tips of the beak remain intact and then soften and wear as the bird uses its beak. In contrast, the HB method results in an open wound that takes 3 weeks to heal. Two major welfare issues arise from beak trimming. The first is loss of sensory input because of removal of or heat treatment of sensory receptors in the beak. The second issue is the potential for acute and chronic pain from severing or heat treatment of nerves. HB trimming initially results in acute pain but there is limited evidence for beak sensitivity in IRBT birds. The development of neuromas in the beak have been implicated as a cause of chronic pain after HB trimming. When birds are HB trimmed (one-half of upper beak; one-third of lower) in the first 10 days of life, neuromas will develop, but they will resolve, compared with birds trimmed at older ages. However, neuromas will not resolve in 10-day old birds if more than one-half of the beak is HB trimmed. While HB trimming is performed according to accreditation standards by removal of one-half the upper beak and one-third of the lower beak is considered excessive, it prevents beak regrowth and the need to subject birds to re-trimming and a second bout of acute pain from the beak wound. Current levels of IRBT to treat half of the beak using the vendors quality-assurance protocol have been implemented worldwide to ensure that neuroma formation is prevented; however, if severe levels of IRBT are used, acute pain and subsequent neuromas may persist. The main impact of beak trimming is how the bird uses its beak when it eats, drinks and pecks at other birds and the environment. Reduced feed intake after HB trimming indicates pain associated with pecking or difficulty in eating. HB-trimmed birds initially show an increase in listlessness and guarding behaviours and increased inactivity, which indicates pain. IRBT and HB-trimmed birds have fewer aggressive pecks at the head, and there is a reduction in severe feather pecking and better feather scores, which results in a large reduction in mortality. Depending on the severity of IRBT and HB trimming, the advantage of using IRBT is improved welfare.

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Índice produtivo e qualidade de ovos de galinhas poedeiras submetidas a diferentes métodos de debicagem

Cited by 7 publications

References 15 publications

Performance of Commercial Laying Hen Submitted to Different Debeaking Methods

Performance of Commercial Laying Hen Submitted to Different Debeaking Methods

Evaluation of different light intensities on the well-being, productivity, and eggs quality of laying hens

Current methods and techniques of beak trimming laying hens, welfare issues and alternative approaches

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