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Effects of low crude protein content and glycine supplementation on broiler chicken performance, carcass traits, and litter quality.

cris.virtual.author-orcid0000-0003-1772-7997
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cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid0000-0002-9204-5534
cris.virtual.author-orcid0000-0003-3179-503X
cris.virtual.author-orcid0000-0003-3638-4192
cris.virtualsource.author-orcid95e7bfbc-b48c-4cbc-a67b-0c82494d303d
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid9107a3d6-a60a-4353-ad9c-465de2211a83
cris.virtualsource.author-orcidd40011ba-3c92-4474-97ec-4aab0d17d286
cris.virtualsource.author-orcidfdc8d278-f25b-44af-b3f6-2d27e735c9d8
dc.abstract.enThe objective of this experiment was to investigate the effects of crude protein (CP) content with or without Gly supplementation on performance, carcass traits, and litter quality of broiler chickens. One-day-old male broiler chickens were fed isoenergetic diets and were assigned to 5 treatments (12 replicates; 8 broiler chickens/replication). The CP content was different among treatments (starter diet from 22% to 19%, grower diet from 20% to 17%, finisher diet from 18% to 15%). The lowest CP concentration in diets has occurred in treatments 4 and 5, while the CP concentrations in diets in treatments 1, 2, and 3 were greater. Diet from treatment 5 was supplemented with Gly. During the starter period, there were no differences in performance among treatments. In the grower, finisher, and in whole periods, the reduction in CP concentration lowered the broiler chicken performance, regardless of supplementation of Gly in comparison to control treatment in which the protein content has not been decreased (P < 0.05). The reduction in CP in diets also decreased breast muscles, however, the supplementation of Gly decreased fat deposition and increased carcass weight (P < 0.05). The reduction in CP in diets affected improvement litter quality (litter dry matter and N content) (P < 0.05) and also decreasing blood urea N content in litter (P = 0.066). Results indicate that a decrease of CP in diets influenced negatively performance (body weight gain, feed intake, and feed conversion ratio) of broiler chickens (except starter period), percentage of breast muscles, and percentage of abdominal fat. The use of synthetic Gly did not improve broiler chicken performance, however increased carcass quality by reducing fatness.
dc.affiliationWydział Medycyny Weterynaryjnej i Nauk o Zwierzętach
dc.affiliation.instituteKatedra Hodowli Zwierząt i Oceny Surowców
dc.affiliation.instituteKatedra Żywienia Zwierząt
dc.contributor.authorHejdysz, Marcin
dc.contributor.authorBogucka, Joanna
dc.contributor.authorZiółkowska, Ewa
dc.contributor.authorPerz, Katarzyna
dc.contributor.authorJarosz, Łukasz
dc.contributor.authorCiszewski, Artur
dc.contributor.authorNowaczewski, Sebastian
dc.contributor.authorŚlósarz, Piotr Paweł
dc.contributor.authorKaczmarek, Sebastian
dc.date.accessioned2026-03-10T12:22:58Z
dc.date.available2026-03-10T12:22:58Z
dc.date.issued2022
dc.description.bibliographybibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if1,8
dc.description.numberJuly 2022
dc.description.points140
dc.description.volume261
dc.identifier.doi10.1016/j.livsci.2022.104930
dc.identifier.issn1871-1413
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/7770
dc.languageen
dc.relation.ispartofLivestock Science
dc.relation.pagesart. 104930
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.encrude protein
dc.subject.englycine
dc.subject.enbroiler chicken
dc.subject.enperformance
dc.subject.encarcass
dc.subject.enlitter quality
dc.titleEffects of low crude protein content and glycine supplementation on broiler chicken performance, carcass traits, and litter quality.
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.volume261