Results of hatching and rearing broiler chickens in different incubation systems.

Autor:	Mesquita MA; Department of Animal Science, Veterinary and Animal Science School, Universidade Federal de Goiás, Goiânia, Goiás, Brazil., Araújo ICS; Department of Animal Science, Veterinary School, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, Minas Gerais, Brazil. Electronic address: italloconradovet@hotmail.com., Café MB; Department of Animal Science, Veterinary and Animal Science School, Universidade Federal de Goiás, Goiânia, Goiás, Brazil., Arnhold E; Department of Animal Science, Veterinary and Animal Science School, Universidade Federal de Goiás, Goiânia, Goiás, Brazil., Mascarenhas AG; Department of Animal Science, Veterinary and Animal Science School, Universidade Federal de Goiás, Goiânia, Goiás, Brazil., Carvalho FB; Department of Animal Science, Veterinary and Animal Science School, Universidade Federal de Goiás, Goiânia, Goiás, Brazil., Stringhini JH; Department of Animal Science, Veterinary and Animal Science School, Universidade Federal de Goiás, Goiânia, Goiás, Brazil., Leandro NSM; Department of Animal Science, Veterinary and Animal Science School, Universidade Federal de Goiás, Goiânia, Goiás, Brazil., Gonzales E; Department of Animal Science, Veterinary and Animal Science School, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
Jazyk:	angličtina
Zdroj:	Poultry science [Poult Sci] 2021 Jan; Vol. 100 (1), pp. 94-102. Date of Electronic Publication: 2020 Sep 23.
DOI:	10.1016/j.psj.2020.09.028
Abstrakt:	Hatchery efficiency is based on hatchability and the number of salable chicks. The hatchery sector has been seeking new alternatives to optimize production rates, including the use of different systems (multistage [MS] or single-stage [SS] machines) to improve incubation conditions. The present study aimed to compare results for hatchability, chick quality, and broiler performance of chicks from 2 incubator systems-MS and SS. The experimental design for hatchability, hatch window, egg weight loss, and chick performance variables was completely randomized with 2 treatments (MS and SS). Performance variables were analyzed as a 2 x 2 factorial arrangement (incubator type x chick sex). Egg weight loss between incubation and transfer was higher for eggs incubated in MS (P < 0.05). Hatchability was higher for eggs incubated in SS (P < 0.05), and chicks in SS had a longer hatch window (P < 0.05). Embryo diagnosis revealed higher final mortality for embryos incubated in MS (P < 0.05), as well as higher percentages of alive and dead pipped and cracked eggs (P < 0.05). Physical quality was better for chicks from SS (P < 0.05). There was no interaction between the studied factors for performance results (P > 0.05). Incubator type did not affect broiler performance for any of the studied ages (P > 0.05), whereas male broilers had better performance than females (P < 0.05). The SS incubation system proved better than the MS system at meeting embryo requirements during embryo development, with better hatching rates and chick quality, although performance variables were not influenced by incubation type. (Copyright © 2020. Published by Elsevier Inc.)
Databáze:	MEDLINE
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