Comportamento ingestivo, desempenho e características de carcaça de cordeiros semi-confinados em sistema integrado de produção
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Data
2016-02-04
Autores
Longhini, Vanessa Zirondi [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
O objetivo foi avaliar o efeito do consórcio da cultura do milho com capim-marandu com ou sem feijão guandu para ensilagem, com posterior sobressemeadura de aveia preta em linha e a lanço sobre a disponibilidade e altura de forragem para pastejo, o comportamento ingestivo, o desempenho e as características da carcaça de cordeiros suplementados com essas silagens em semi-confinamento. O delineamento experimental foi inteiramente casualizado, os tratamentos avaliados foram combinados em arranjo fatorial 2 x 2, em esquema de parcelas subdivididas, sendo dois tipos de silagem (S): de milho com capim-marandu e feijão guandu (C/G) e sem feijão guandu (S/G), duas modalidades de sobressemeadura da aveia preta (AV): em linha (Li) ou a lanço (La). Foram utilizados 48 cordeiros machos em ambos os anos. As características de carcaça não foram influenciadas pela interação entre os fatores (P > 0,05), no entanto, os fatores S x AV e S x C influenciaram as variáveis disponibilidade de forragem (DF), consumo de massa seca de suplemento (CMS, % do Peso Corporal – PC) e pastejo (P). O ganho médio diário (GMD) e ócio diário (OD) foram influenciadas apenas pela interação S x AV. A inclusão do feijão guandu no sistema de produção em consócio com milho e capim-marandu e a sobressemeadura da aveia em linha aumentou (P ≤ 0,05) a DF, influenciando no aumento do tempo de P e no menor CMS de suplemento (% do PC). Conclui-se, portanto, que o consórcio do milho com capim-marandu e feijão guandu cultivados para silagem no verão/outono aumenta a disponibilidade de pastagem. No inverno/primavera a modalidade de sobressemeadura da aveia em linha apresenta maior disponibilidade de forragem para pastejo em relação a lanço. O consórcio tríplice é uma alternativa a ser utilizado em sistemas integrados de produção agropecuária, em condições tropicais. Em semi-confinamento, o tempo de pastejo aumenta quando há maior disponibilidade de forragem. A silagem de milho em consórcio com capim-marandu e feijão guandu não interfere no desempenho e características de carcaça de cordeiros semi-confinados.
The objective was to evaluate the effect of maize intercropped with palisadegrass with or without pigeonpea for silage, with subsequent overseeded oat line and broadcasted on the availability and height of forage for grazing, ingestive behavior, performance and carcass characteristics of lambs supplemented with such silage in semi-feedlot. The experimental design was completely randomized, the treatments were combined in a factorial arrangement 2 x 2, in a split-plot, two types of silage (S): corn with palisadegrass and pigeonpea (C / G) and without pigeonpea (S / G), two mode overseeded of oat (AV): in line (Li) or broadcast (La). Were used 48 lambs males. Carcass characteristics were not influenced by the interaction between the factors (P > 0,05), however, the interaction factors S x AV and S x C, influenced the variables availability of forage (DF), dry matter intake of supplement (CMS ,% Body Weight - PC) and grazing time (P). The average daily gain (GMD) and daily idling time (OD) were influenced only by S x AV interaction. The inclusion of pigeonpea in the production system in intercropped with corn and palisadegrass and overseeded oat in line increased (P ≤ 0,05) DF, influencing the increase in the time of P and lower CMS of supplement (% PC). It can be conclued, therefore, that the intercropped of corn with palisadegrass and pigeonpea for silage in the summer/fall increases the forage availability of pasture. In winter/spring the mode overseeded of oat in line provided greater forage availability for grazing than broadcast. The triple intercropped is an alternative to be used in integrated agricultural production systems in tropical conditions. In semi-confinement, grazing time increases when there is greater availability of forage. Corn silage in intercropped with palisadegrass and pigeonpea does not interfere with performance and carcass characteristics of semi-lambs.
The objective was to evaluate the effect of maize intercropped with palisadegrass with or without pigeonpea for silage, with subsequent overseeded oat line and broadcasted on the availability and height of forage for grazing, ingestive behavior, performance and carcass characteristics of lambs supplemented with such silage in semi-feedlot. The experimental design was completely randomized, the treatments were combined in a factorial arrangement 2 x 2, in a split-plot, two types of silage (S): corn with palisadegrass and pigeonpea (C / G) and without pigeonpea (S / G), two mode overseeded of oat (AV): in line (Li) or broadcast (La). Were used 48 lambs males. Carcass characteristics were not influenced by the interaction between the factors (P > 0,05), however, the interaction factors S x AV and S x C, influenced the variables availability of forage (DF), dry matter intake of supplement (CMS ,% Body Weight - PC) and grazing time (P). The average daily gain (GMD) and daily idling time (OD) were influenced only by S x AV interaction. The inclusion of pigeonpea in the production system in intercropped with corn and palisadegrass and overseeded oat in line increased (P ≤ 0,05) DF, influencing the increase in the time of P and lower CMS of supplement (% PC). It can be conclued, therefore, that the intercropped of corn with palisadegrass and pigeonpea for silage in the summer/fall increases the forage availability of pasture. In winter/spring the mode overseeded of oat in line provided greater forage availability for grazing than broadcast. The triple intercropped is an alternative to be used in integrated agricultural production systems in tropical conditions. In semi-confinement, grazing time increases when there is greater availability of forage. Corn silage in intercropped with palisadegrass and pigeonpea does not interfere with performance and carcass characteristics of semi-lambs.
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Palavras-chave
Cajanus cajan, Ovis aries, Urochloa brizantha, Zea Mays L, Consorciação de milho com Urochloa, Intercropping corn and Urochloa