dc.creator | Rakonjac, Simeon | |
dc.creator | Dosković, Vladimir | |
dc.creator | Bogosavljević-Bošković, Snežana | |
dc.creator | Škrbić, Zdenka | |
dc.creator | Lukić, Miloš | |
dc.creator | Petričević, Veselin | |
dc.creator | Petrović, Milun D. | |
dc.date.accessioned | 2021-11-30T10:47:04Z | |
dc.date.available | 2021-11-30T10:47:04Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 1516-635X | |
dc.identifier.uri | http://r.istocar.bg.ac.rs/handle/123456789/758 | |
dc.description.abstract | The aim of this study was to evaluate the effect of rearing systems
and genotypes on production performance and egg quality. Isa Brown
and New Hampshire genotypes were used in this study. These two
genotypes were housed in floor and organic rearing systems. During the
experimental period, which lasted one year (52 weeks), the following
production performance parameters were recorded: egg production,
daily egg mass, feed consumption, feed conversion efficiency, and
mortality. Fifteen eggs per group were collected for analysis at 64 weeks
of hen age. These samples were evaluated for external parameters
(egg weight and egg shape index), internal parameters (albumen
height, Haugh unit, and the proportions of albumen, yolk and shell),
eggshell quality parameters (shell thickness, shell deformation and
shell breaking strength), and eggs’ chemical composition (dry matter,
minerals, protein and lipids). Generally, Isa Brown hens had better
production performance than New Hampshire hens. At the same time,
organic New Hampshire layers performed better than floor-reared ones.
Genotype had a significant effect on all ten egg quality parameters
(external, internal and eggshell quality), rearing system independently
affected only egg weight, and the interaction of the observed factors
significantly influenced seven parameters. Genotype had a significant
effect on three of the four chemical composition parameters, while no
significant effect of the rearing system was established on the chemical
composition of eggs. The rearing system x genotype interaction
significantly affected the eggs’ protein content. | sr |
dc.language.iso | en | sr |
dc.publisher | Fundação APINCO de Ciência e Tecnologia Avícolas | sr |
dc.relation | "info:eu-repo/grantAgreement/MESTD/inst-2020/200088/RS// | sr |
dc.relation | "info:eu-repo/grantAgreement/MESTD/inst-2020/200022/RS//" | sr |
dc.rights | openAccess | sr |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Brazilian Journal of Poultry Science | sr |
dc.subject | egg quality | sr |
dc.subject | genotype | sr |
dc.subject | laying hens | sr |
dc.subject | rearing systems | sr |
dc.title | Production Performance and Egg Quality of Laying Hens as Influenced by Genotype and Rearing System | sr |
dc.type | article | sr |
dc.rights.license | BY | sr |
dc.citation.volume | 23 | |
dc.citation.issue | 02 | |
dc.citation.spage | 001 | |
dc.citation.epage | 008 | |
dc.identifier.doi | 10.1590/1806-9061-2019-1045 | |
dc.identifier.fulltext | http://r.istocar.bg.ac.rs/bitstream/id/3955/bitstream_3955.pdf | |
dc.type.version | publishedVersion | sr |