Performance and carcass characteristics of broiler chickens with different growth potential and submitted to heat stress
| dc.creator | PS Rosa | |
| dc.creator | DE Faria Filho | |
| dc.creator | F Dahlke | |
| dc.creator | BS Vieira | |
| dc.creator | M Macari | |
| dc.creator | RL Furlan | |
| dc.date | 2007 | |
| dc.date.accessioned | 2026-07-07T03:24:15Z | |
| dc.description | In order to evaluate the effects of broiler genotype and of heat exposure on performance, carcass characteristics, and protein and fat accretion, six hundred one-day-old male broilers were randomly assigned in a 2 x 3 factorial arrangement, according to the following factors: genetic group (selected and non-selected broilers) and pair-feeding scheme (Ad32 - reared under heat stress and fed ad libitum; Ad23 - reared at thermoneutrality and fed ad libitum; Pf23 - reared at thermoneutrality and pair fed with Ad32), with a total of six treatments with four replicates of 25 birds each. Independent of pair-feeding scheme, selected broilers showed better feed conversion, higher carcass yield, and lower abdominal fat deposition rate. However, as compared to non-selected broilers, they reduced more intensively feed intake when heat exposed, which promoted significant breast-yield decrease, and more pronounced changes on carcass chemical composition. These findings allows concluding that, in both genetic groups, both environmental temperature and feed-intake restriction influence abdominal fat deposition rate and other carcass characteristics; however, the impact of heat exposure on broiler performance is more noticeable on the selected line. | |
| dc.format | application/pdf | |
| dc.identifier | 1516-635X | |
| dc.identifier | https://www.redalyc.org/articulo.oa?id=179714004007 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/432917 | |
| dc.language | en | |
| dc.publisher | Fundação APINCO de Ciência e Tecnologia Avícolas | |
| dc.relation | http://www.redalyc.org/revista.oa?id=1797 | |
| dc.rights | Revista Brasileira de Ciência Avícola | |
| dc.source | Revista Brasileira de Ciência Avícola (Brasil) Num.3 Vol.9 | |
| dc.subject | Agrociencias | |
| dc.title | Performance and carcass characteristics of broiler chickens with different growth potential and submitted to heat stress | |
| dc.type | artículo científico |