Agricultural and Biosystems Engineering Publications

Campus Units

Agricultural and Biosystems Engineering, Egg Industry Center

Document Type

Article

Publication Version

Published Version

Publication Date

2017

Journal or Book Title

Pesquisa Agropecuária Brasileira

Volume

52

Issue

2

First Page

113

Last Page

120

Research Focus Area(s)

Animal Production Systems Engineering

Abstract

The objective of this work was to evaluate the effect of thermal challenge at different intensities and durations on the production responses of 3 to 21-day-old broiler chickens. Two hundred and ten Cobb chicks were subjected to dry-bulb temperatures (tdb) of 27, 30, 33, or 36°C for the duration of 0, 1, 2, 3, or 4 days from the second day of life onwards. The experiment was carried out in four identical environmentally-controlled wind tunnels. Data on body mass (BM), feed intake (FI), and water intake (WI), all in grams, were monitored daily; and body weight gain (BWG), in grams, and feed conversion (FC) were also calculated. The effect of duration was not statistically significant. Empirical models were adjusted to relate BM, FI, and WI with tdb and bird age. The performance of chicks at 21 days of age was analyzed using the BM, FI, WI, BWG, and FC values. Overall, the development of chicks at 33 and 36°C was better than that of those subjected to the lower tdb of 30 and 27°C. The exposure of chicks to cold thermal challenge in early life can have a carry-over negative effect on their production performance up to 21 days of age.

Comments

This article is published as Ferraz, Patrícia Ferreira Ponciano, Tadayuki Yanagi Junior, Renato Ribeiro de Lima, and Hongwei Xin. "Performance of chicks subjected to thermal challenge." Pesquisa Agropecuária Brasileira 52, no. 2 (2017): 113-120. Posted with permission.

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Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Copyright Owner

Embrapa Informação Tecnológica

Language

en, pt

File Format

application/pdf

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