Eimeria maxima infection impacts the protein utilisation of broiler chicks from 14 to 28 days of age

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dc.contributor.authorFreitas, L. F.V. [UNESP]
dc.contributor.authorDorigam, J. C.P.
dc.contributor.authorReis, M. P. [UNESP]
dc.contributor.authorHorna, F. [UNESP]
dc.contributor.authorFernandes, J. B.K. [UNESP]
dc.contributor.authorSakomura, N. K. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionEvonik Operations GmbH
dc.date.accessioned2023-07-29T13:54:47Z
dc.date.available2023-07-29T13:54:47Z
dc.date.issued2023-01-01
dc.description.abstractIn floor-raised broilers, coccidiosis is responsible for reducing the use of nutrients, mainly by impairing intestinal tissue function and activating the immune system. Understanding and quantifying how balanced dietary protein (BP) is used when birds are challenged will allow nutritionists to make decisions regarding challenged flocks. This study aimed to determine the effects of Eimeria maxima on broiler performance and body composition, and to calculate changes in the maintenance and efficiency of protein utilisation (Ep). A total of 2 400 male 14-day-old Cobb500 broiler chickens were randomly allotted to ten groups with six replications of 40 birds each, with a 5 × 2 factorial arrangement of treatments. Five levels of BP in reference to digestible lysine (3.6, 7.2, 10.8, 14.4, and 18.0 g/kg) were fed to unchallenged (NCH) and challenged (CH) broilers with 7 × 103 E. maxima sporulated oocysts from 14 to 28 days of age. Performance and body deposition were measured using a comparative slaughter technique to compare BP maintenance requirements and Ep. ANOVA followed by a posthoc test was performed to compare the effects of BP levels, challenge, and their interactions. A monomolecular model describing the responses of NCH and CH broilers to BP intake, maintenance, and maximum protein deposition was compared. There were significant interactions between body weight gain and digestible lysine intake among the factors studied. Infection had a negative impact on all variables analysed, proving the efficacy of the challenge. The maintenance did not differ between the CH and NCH groups. Increased levels of dietary BP did not recover the maximum protein deposition in CH broilers. Eimeria maxima significantly reduced Ep by a factor of 0.09 times on Ep compared to the control group. The Eimeria maxima challenge was responsible to modify the use of BP altering the body composition and impairing broilers performance.en
dc.description.affiliationAnimal Science Departament UNESP – Universidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias, Via de acesso Professor Paulo Donato Castellene, s/n, 14884-900 Jaboticabal, São Paulo
dc.description.affiliationEvonik Operations GmbH, Rodenbacher Chaussee 4
dc.description.affiliationAquaculture Center UNESP – Universidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias, Via de acesso Professor Paulo Donato Castellene, s/n, 14884-900 Jaboticabal, São Paulo
dc.description.affiliationUnespAnimal Science Departament UNESP – Universidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias, Via de acesso Professor Paulo Donato Castellene, s/n, 14884-900 Jaboticabal, São Paulo
dc.description.affiliationUnespAquaculture Center UNESP – Universidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias, Via de acesso Professor Paulo Donato Castellene, s/n, 14884-900 Jaboticabal, São Paulo
dc.identifierhttp://dx.doi.org/10.1016/j.animal.2023.100807
dc.identifier.citationAnimal.
dc.identifier.doi10.1016/j.animal.2023.100807
dc.identifier.issn1751-732X
dc.identifier.issn1751-7311
dc.identifier.scopus2-s2.0-85159166860
dc.identifier.urihttp://hdl.handle.net/11449/248824
dc.language.isoeng
dc.relation.ispartofAnimal
dc.sourceScopus
dc.subjectCoccidiosis
dc.subjectHealth challenge
dc.subjectNutrient use
dc.subjectPerformance
dc.subjectProtein partitioning
dc.titleEimeria maxima infection impacts the protein utilisation of broiler chicks from 14 to 28 days of ageen
dc.typeArtigo
unesp.author.orcid0000-0001-8255-9032[3]
unesp.author.orcid0000-0002-1277-0120[4]
unesp.author.orcid0000-0001-5707-4113[6]
unesp.departmentZootecnia - FCAVpt

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Jaboticabal - FCAV - Faculdade de Ciências Agrárias e Veterinárias
Jaboticabal - CAUNESP - Centro de Aquicultura da Unesp