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The impact of beak tissue sloughing and beak shape variation on the behavior and welfare of infrared beak-treated layer pullets and hens.
Struthers, S; Classen, H L; Gomis, S; Crowe, T G; Schwean-Lardner, K.
Afiliación
  • Struthers S; Department and Animal and Poultry Science, University of Saskatchewan, Saskatoon S7N 5A8, Canada.
  • Classen HL; Department and Animal and Poultry Science, University of Saskatchewan, Saskatoon S7N 5A8, Canada.
  • Gomis S; Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon S7N 5B4, Canada.
  • Crowe TG; Department of Mechanical Engineering, University of Saskatchewan, Saskatoon S7N 5A9, Canada.
  • Schwean-Lardner K; Department and Animal and Poultry Science, University of Saskatchewan, Saskatoon S7N 5A8, Canada.
Poult Sci ; 98(10): 4269-4281, 2019 Oct 01.
Article en En | MEDLINE | ID: mdl-31073593
This research examined how infrared beak treatment (IRBT), sloughing of the treated beak tissue, and the variations in beak shape that can occur post-IRBT impact the welfare and mortality of Lohmann LSL-Lite (LW) and Lohmann Brown (LB) pullets and hens. Two experiments were conducted and birds for both experiments were treated on the day of hatch. IRBT equipment settings were adjusted to create 4 specific beak shapes: shovel (SHV), step (STP), standard (STAN), and an untreated sham control (C). Experiment 1 pullets (n = 80 per strain) were reared in bioassay cages from 1 to 29 D of age (4 replicates per treatment). Data collected included time and presence of beak sloughing, pecking force, behavioral expression, and mortality. Experiment 2 pullets (n = 320 per strain) were reared in floor pens from 1 D to 18 wk of age (2 replicates per treatment) and then conventional cages from 18 to 60 wk of age (6 replicates per treatment). Data collected for Experiment 2 included behavioral expression, feather cover, comb damage, and mortality. Data were analyzed using PROC MIXED (SAS® 9.4) with Tukey's test to separate means. Differences were significant when P ≤ 0.05. IRBT and sloughing had no effect on pecking force or mortality throughout rearing. The variations in post-IRBT beak shape had minor effects on behavior. During rearing, STAN pullets were more active than C pullets but STP and STAN pullets performed less exploratory pecking. During the laying period, SHV and STP hens preened more than C hens. The IRBT treatments, regardless of beak shape, reduced feather loss, comb damage, and cannibalism-related mortality during the laying period. Overall, the results indicate that LW and LB pullets and hens can cope with the change in beak shape that occurs with IRBT, and that welfare is not negatively impacted if some variation in beak shape occurs.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Pico / Bienestar del Animal / Pollos / Agresión / Ingestión de Alimentos / Rayos Infrarrojos Límite: Animals Idioma: En Revista: Poult Sci Año: 2019 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Pico / Bienestar del Animal / Pollos / Agresión / Ingestión de Alimentos / Rayos Infrarrojos Límite: Animals Idioma: En Revista: Poult Sci Año: 2019 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Reino Unido