title: Performance and characteristics of carcass and non-carcass components of lambs fed peach-palm by-product.
abstract: The objective of this study was to evaluate the effects of supplying the by-product of peach-palm (Bactris gasipaes) on performance and characteristics of carcass and non-carcass components of feedlot lambs. Twenty Santa Ines lambs of 150 days average age and 22.4 ± 3.4 kg body weight were confined in individual pens. A completely randomized design was utilized with four experimental diets composed of: fresh peach-palm by-product enriched with urea, fresh peach-palm by-product + concentrate, silage of peach-palm by-product + concentrate, and silage of peach-palm by-product enriched with 15 % corn meal + concentrate. Intake was evaluated daily, and at the end of 42 days of experiments, lambs were slaughtered and the characteristics of carcass and non-carcass parts were evaluated. Performance and carcass characteristics showed differences between the animals' intake of total mixed rations (TMR) and only the diet with roughage. For the lambs that intaked TMR, the form of utilization of roughage (fresh or as silage) affected animal performance but did not change the carcass characteristics. Dry matter intake and feed conversion were influenced by the form of utilization of the silage (with and without additive). Providing fresh by-product plus concentrate improves lamb performance but does not interfere in the carcass characteristics, compared with the use of by-product in the form of silage.
authors.affiliation: Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, km 16, 45662-900, Ilhéus, Bahia, Brazil.
authors.forename: Ícaro
authors.initials: Í
authors.lastname: dos Santos Cabral
authors.forename: José Augusto Gomes
authors.initials: JA
authors.lastname: Azevêdo
authors.forename: Flávio Moreira
authors.initials: FM
authors.lastname: de Almeida
authors.forename: Luiz Gustavo Ribeiro
authors.initials: LG
authors.lastname: Pereira
authors.forename: Gherman Garcia Leal
authors.initials: GG
authors.lastname: de Araújo
authors.forename: Cristiane Leal
authors.initials: CL
authors.lastname: dos Santos Cruz
authors.forename: Abdon Santos
authors.initials: AS
authors.lastname: Nogueira
authors.forename: Lígia Lins
authors.initials: LL
authors.lastname: Souza
authors.forename: Gisele Andrade
authors.initials: GA
authors.lastname: de Oliveira
mesh_terms: D000821:Animal Feed; D000818:Animals; D028023:Arecaceae; D001835:Body Weight / Q000502:physiology; D001938:Brazil; D004032:Diet / Q000662:veterinary*; D004435:Eating / Q000502:physiology; D008460:Meat; D009929:Organ Size / Q000502:physiology; D011897:Random Allocation; D012756:Sheep / Q000254:growth & development* / Q000378:metabolism*