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R. Silveira

4 papers indexed here

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Open access Oct 2026

Breeder age outweighs egg grading method on hatchability and chick quality in broiler hatcheries

Incubation efficiency and chick health are fundamentally linked to fertile egg quality, which is influenced by both grading methods and breeder age. This study evaluated the effects of manual versus automated grading and Cobb breeder age (28–42, 43–56, and 57–70 weeks) on hatchability, chick quality, and embryonic mort...

Jumara Coelho Ticiano, Roberto Carlos de Freitas, L. M. Fonseca et al. · 0 citations
Open access Oct 2026

Impact of hatchery microclimate, breeder age and storage time on egg water loss in a tropical climate

This study aimed to evaluate the effects of incubator microclimate, broiler breeder age, and fertile egg storage duration on egg water loss in a commercial hatchery within a tropical climate. Data were collected from the environments (air-conditioned egg room and incubator) in order to perform microclimatic assessments...

A. C. Nazareno, R. Silveira, Afrânio M. C. Vieira et al. · 1 citation
Open access Oct 2026

Welfare assessment in pasture-based and confined dairy farms in São Paulo State, Brazil: a descriptive multi-case study identifying health and hygiene constraints

Multidimensional on-farm assessment can identify welfare constraints that are not evident from production records alone, but protocols developed for housed cattle require careful interpretation when applied to pasture-based herds. This cross-sectional, descriptive multi-case study characterized dairy-cow welfare prof...

A. Pinto, R. Silveira, Ayres Gustavo Dias Nogueira et al. · 0 citations
Open access Sep 2026

Morphophysiological profiles associated with thermoregulation in dark-coated North Tinerfeña goats and Canária de Pelo sheep in the Canary Islands

This study evaluated and compared morphophysiological characteristics associated with thermoregulation in North Tinerfeña goats and Canária sheep, both dark-coated and maintained under similar environmental conditions on the island of Tenerife, Spain. A total of 23 adult Canária de Pelo ewes (clinically healthy, multip...

W. S. Tavares da Silva, R. Silveira, L. A. Bermejo et al. · 0 citations

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