RESUMO

Objetivou-se avaliar as características bromatológicas, como matéria seca (MS), proteína bruta (PB), fibra em detergente neutro (FDN) e ácido (FDA), lignina (LIG), nutrientes digestíveis totais (NDT) e fermentativas como pH e a porcentagem do nitrogênio amoniacal em relação ao nitrogênio total (N-NH3/NT), da silagem do bagaço de laranja pré-seco (SBL) em diferentes tempos de armazenamento, bem como parâmetros relacionados à perdas de nutrientes, como as perdas por gases, por efluentes e recuperação de matéria seca. Adotou-se o delineamento experimental inteiramente casualizado, com cinco tratamentos e seis repetições, sendo os tratamentos diferentes dias de abertura dos mini-silos (10, 20, 40, 60 e 80 dias). Os valores de MS, PB, FDN, LIG, NDT, N-NH3/NT e recuperação de matéria seca não apresentaram diferenças (P>0,05) entre os dias de abertura dos mini-silos. Houve redução (P<0,05) nos teores de FDA, perdas de MS, perdas por gases e nos valores do pH. A ensilagem pode ser utilizada para conservar o bagaço de laranja pré-seco, uma vez que o processo manteve o valor nutritivo...(AU)

The objective of this study was to evaluate the bromatological [dry matter, crude protein (CP), neutral (NDF) and acid detergent fiber (ADF), lignin and total digestible nutrients (TDN)] and fermentation characteristics [pH and ammoniacal nitrogen in relation to total nitrogen (N-NH3/TN)] of pre-dried orange bagasse silage after different periods of storage, as well as parameters related to nutrient losses from gases and effluents and dry matter recovery. A completely randomized design with five treatments and six replicates was adopted in which the treatments consisted of the different days of opening of the mini-silos (10, 20, 40, 60, and 80 days). Dry matter, CP, NDF, lignin, TDN, N-NH3/TN or dry matter recovery did not differ (P>0.05) between days of opening of the mini-silos. A reduction (P<0.05) was observed in ADF content, dry matter losses, losses from gases, and pH values. Ensiling can be used to store pre-dried orange bagasse since the process maintains its nutritional value...(AU)

Assuntos

RESUMO

Objetivou-se avaliar as características bromatológicas, como matéria seca (MS), proteína bruta (PB), fibra em detergente neutro (FDN) e ácido (FDA), lignina (LIG), nutrientes digestíveis totais (NDT) e fermentativas como pH e a porcentagem do nitrogênio amoniacal em relação ao nitrogênio total (N-NH3/NT), da silagem do bagaço de laranja pré-seco (SBL) em diferentes tempos de armazenamento, bem como parâmetros relacionados à perdas de nutrientes, como as perdas por gases, por efluentes e recuperação de matéria seca. Adotou-se o delineamento experimental inteiramente casualizado, com cinco tratamentos e seis repetições, sendo os tratamentos diferentes dias de abertura dos mini-silos (10, 20, 40, 60 e 80 dias). Os valores de MS, PB, FDN, LIG, NDT, N-NH3/NT e recuperação de matéria seca não apresentaram diferenças (P>0,05) entre os dias de abertura dos mini-silos. Houve redução (P<0,05) nos teores de FDA, perdas de MS, perdas por gases e nos valores do pH. A ensilagem pode ser utilizada para conservar o bagaço de laranja pré-seco, uma vez que o processo manteve o valor nutritivo...

The objective of this study was to evaluate the bromatological [dry matter, crude protein (CP), neutral (NDF) and acid detergent fiber (ADF), lignin and total digestible nutrients (TDN)] and fermentation characteristics [pH and ammoniacal nitrogen in relation to total nitrogen (N-NH3/TN)] of pre-dried orange bagasse silage after different periods of storage, as well as parameters related to nutrient losses from gases and effluents and dry matter recovery. A completely randomized design with five treatments and six replicates was adopted in which the treatments consisted of the different days of opening of the mini-silos (10, 20, 40, 60, and 80 days). Dry matter, CP, NDF, lignin, TDN, N-NH3/TN or dry matter recovery did not differ (P>0.05) between days of opening of the mini-silos. A reduction (P<0.05) was observed in ADF content, dry matter losses, losses from gases, and pH values. Ensiling can be used to store pre-dried orange bagasse since the process maintains its nutritional value...

Assuntos

RESUMO

The aim of study was to determine the energy requirements for maintenance and growth of forty-one Saanen, intact male kids with initial body weight (BW) of 5.12±0.19 kg. The baseline (BL) group consisted of eight kids averaging 5.46±0.18 kg BW. An intermediate group consisted of six kids, fed for ad libitum intake, that were slaughtered when they reached an average BW of 12.9±0.29 kg. The remaining kids (n = 27) were randomly allocated into nine slaughter groups (blocks) of three animals distributed among three amounts of dry matter intake (DMI; ad libitum and restricted to 70% or 40% of ad libitum intake). Animals in a group were slaughtered when the ad libitum-treatment kid in the group reached 20 kg BW. In a digestibility trial, 21 kids (same animals of the comparative slaughter) were housed in metabolic cages and used in a completely randomized design to evaluate the energetic value of the diet at different feed intake levels. The net energy for maintenance (NEm) was 417 kJ/kg(0.75) of empty BW (EBW)/d, while the metabolizable energy for maintenance (MEm) was 657 kJ/kg(0.75) of EBW/d. The efficiency of ME use for NE maintenance (km) was 0.64. Body fat content varied from 59.91 to 92.02 g/kg of EBW while body energy content varied from 6.37 to 7.76 MJ/kg of EBW, respectively, for 5 and 20 kg of EBW. The net energy for growth (NEg) ranged from 7.4 to 9.0 MJ/kg of empty weight gain by day at 5 and 20 kg BW, respectively. This study indicated that the energy requirements in goats were lower than previously published requirements for growing dairy goats.