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Replication data for: In pursuit of a better broiler: walking ability and incidence of contact dermatitis in conventional and slower growing strains of broiler chickens
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Santos, Midian; Widowski, M. Tina; Torrey, Stephanie; Kiarie, Elijah; Guerin, Michele; Edwards, Michelle — 2023-01-17 The aim of this study was to investigate the differences in mobility and contact dermatitis between 2 FG and 12 SG strains of broiler chickens raised under the same conditions and processed at similar market weights.
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Replication Data for: Rearing Laying Hens: environmental complexity and genetic strain affect pullet but not chick performance in a T-maze learning task
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Rentsch, K., Ana; Harlander, Alexandra; Niel, Lee; Siegford, Janice; Widowski, M. Tina — 2023-04-06 We used two learning tests to test three hypotheses using chicks and pullets of brown and white layer strains reared in cages and aviaries of varying complexity. 1) Does increased spatial complexity during early life improve the performance of laying hen chicks/pullets in a T-maze? 2) Does chick/pullet performance in a two-dimensional learning task differ between genetic strains? 3) Is there an interactive effect of genetic strain and rearing environment on performance in the tasks?
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Replication Data for: Raising Laying Hens: housing complexity and genetic strain affect startle and behavioural response to fear stimuli
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Rentsch, K., Ana; Harlander, Alexandra; Niel, Lee; Siegford, Janice; Widowski, M. Tina — 2023-04-05 In this paper, we asked whether the degree of early complexity (minimal, low, moderate, or high), genetic strain (brown vs white feathered), or their interaction affects fear behaviour (type and intensity) in laying hen pullets in different fear-inducing situations: 1) a startle response test, 2) a novel arena, and 3) a novel object test.
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Replication Data for: The effect of feeding flaxseed as a source of omega-3 fatty acids to broiler chickens and table egg pullet breeders on body weight, reproductive performance, and hatchability performance indices
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Whittle, H. Rosemary; Kiarie, Elijah; Widowski, M. Tina — 2023-08-08 This study was part of a larger project investigating the effects of maternal feeding of n-3 FA to broiler and layer breeders on offspring brains and behaviour (Whittle, 2023). Here we report the results of feeding flaxseed as a source of n-3 FA on breeders’ body weight and uniformity during rearing and laying, egg production and hatchery performance indices. In two separate experiments, we fed the broiler and layer breeders diets differing in n-3 FA during rearing and egg production.
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Replication Data for: Strain and age but not maternal feeding of n-3 fatty acids affect the performance of laying hen offspring in a series of associative learning tasks
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Whittle, H. Rosemary; Kiarie, Elijah; Harlander, Alexandra; Widowski, M. Tina — 2024-03-12 The data presented in this paper is from a larger project assessing the effect of feeding omega-3 fatty acids to layer breeder hens on the behaviour of their offspring. This paper aims to demonstrate the effect of maternal-fed omega-3 fatty acids on the associative learning ability of two strains of layer chickens (ISA Brown and Shaver White).
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Supplemental data for: Relative preference for pecking blocks and its association with keel status and eggshell quality in laying hens housed in enriched cages
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Ehigbor, Tunmise; Kiarie, Elijah; Harlander, Alexandra; Widowski, M. Tina — 2024-09-05 The files submitted here contains data collected for the thesis titled "Relative preference for pecking blocks and its association with keel status and eggshell quality in laying hens housed in enriched cages." The purpose of this research was to determine pecking block preferences of White and Brown feathered laying hens strains, and if there is a time of day effect on pecking block use. We then investigated the association between pecking block preference, pecking block use, keel status, and eggshell quality. We also investigated if laying hens are consistent in their pecking block preference over time. Data on weekly pecking block disappearance, number of hens using pecking blocks across the day, eggshell quality and keel status in focal birds were also assessed. Data was analyzed using SAS Proc GLIMMIX, and consistency data was analyzed using SAS Proc Freq.

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(Author: Widowski, M. Tina)

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