Fracionamento de carboidratos e degradabilidade ruminal da cana-de-açúcar tratada com óxido de cálcio

Romão, C.O.; Carvalho, Gleidson Giordano Pinto de; Leite, Vitor Barbanti Pereira; Santos, A. S.; Chagas, Daiane Maria Trindade; Ribeiro, Ossival Lolato; Pinto, L. F. B.; Oliveira, Ronaldo Lopes

doi:10.1590/s0102-09352013000200033

Cited by 10 publications

(12 citation statements)

References 14 publications

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“…This outcome reinforces the feasibility of using this additive to reduce the fiber levels, which would be a nutritionally favorable characteristic to animal intake, since the sugarcane fiber has low degradability (ROMÃO et al, 2013;ROMÃO et al, 2014), which contributes to the reduction of intake due to the physical filling.…”

supporting

confidence: 69%

Qualitative parameters of sugarcane silages treated with urea and calcium oxide

et al. 2015

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The objective was to evaluate the fermentation parameters, chemical composition and fractionation of carbohydrates of sugarcane silages treated with urea and calcium oxide (CaO). Upon ensiling, the treatments applied to the sugarcane were: 1% urea; 0.5% urea + 0.5% CaO; and 1% CaO, in relation to a control silage, without additive. The chemical additives (urea and CaO) were added at ensiling, in an amount calculated based on the fresh matter (as is). A completely randomized design consisting of four treatments (silages) and nine replicates was adopted. The material was conditioned in PVC mini-silos for five months. At the end of the storage period, silos were weighed again and samples were collected to quantify the losses caused by fermentation, dry matter recovery, pH, and ammonia nitrogen (N-NH 3 ) of the silages and to evaluate the chemical composition and fractionation of carbohydrates. The silage with 1% CaO showed the highest recovery of dry matter, and in terms of carbohydrate fractionation, it showed the highest levels of soluble and potentially soluble carbohydrates. Addition of 1% CaO during ensiling reduces the fermentation losses of sugarcane silages. Key words: Chemical additives, dry matter recovery, ensiling ResumoObjetivou-se avaliar os parâmetros fermentativos, a composição química e o fracionamento de carboidratos das silagens de cana-de-açúcar tratadas com ureia e óxido de cálcio (CaO). Na ensilagem, os tratamentos aplicados à cana foram 1% de ureia; 0,5% de ureia + 0,5% de CaO; e 1% de CaO, em comparação a uma silagem controle, sem aditivo. Os aditivos químicos (ureia e CaO) foram adicionados no momento da ensilagem, em quantidade calculada com base na matéria natural. Utilizouse um delineamento inteiramente casualizado, composto de quatro tratamentos (silagens) e nove repetições. O material foi acondicionado em minissilos de PVC, durante cinco meses. Ao fim do período de armazenamento, foi feita uma nova pesagem e coletadas amostras, para quantificação das perdas decorrentes da fermentação, da recuperação de matéria seca, do pH e do nitrogênio amoniacal (N-NH 3 ) das silagens e para avaliação da composição química e do fracionamento de carboidratos. A silagem com 1% de CaO apresentou maior recuperação de matéria seca, e em relação ao fracionamento dos carboidratos apresentou maior teor de carboidratos solúveis e potencialmente solúveis. A adição de 1% de CaO durante a ensilagem reduz as perdas fermentativas de silagens da cana-de-açúcar. Palavras-chave: Aditivos químicos, ensilagem, recuperação de matéria seca

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confidence: 69%

Qualitative parameters of sugarcane silages treated with urea and calcium oxide

et al. 2015

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“…The use of chemical additives in the ensiling of tropical forages has been tested for over two decades (Felix & Funso, 1994;Mahouachi, Haddad, Kayouli, Théwis, & Beckers, 2003;Miron, Kabala, Tockb, & Ben-Ghedalia, 1995), and the improvement and efficiency of production of preserved roughages (Nkosi et al, 2016;Roth et al, 2016) have been gradually contributing to animal production. Romão et al (2013), Chizzotti et al (2015) and Martins et al (2015) investigated and described the use of urea and calcium oxide as alkalinizing chemical additives in the ensiling of sugarcane.…”

mentioning

confidence: 99%

Effects of pearl millet silage ammoniation with urea on carcass and meat quality of lambs

Carvalho

Freitas

Santos

et al. 2018

Animal Physiology Nutrition

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This study aimed to evaluate the effect of pearl millet silage ammoniated with urea on lamb carcass characteristics and meat quality. Thirty-two noncastrated crossbred lambs at 4-5 months of age, with an average initial body weight of 17.39 ± 2.16 kg, were distributed into four treatments in a randomized block experimental design with eight animals per treatment. Experimental diets were composed of pearl millet silage ammoniated with four levels of urea (0%, 2%, 4% and 6%, on dry matter basis (DM). Carcass conformation and fatness decreased linearly (p < 0.05). Except for the fat content, the proximate composition was not influenced (p < 0.05) by the diets. Meat lightness and yellowness increased linearly (p < 0.05). There was no effect of diets (p > 0.05) on cooking losses or shear force. The levels of oleic and erucic fatty acid levels in the meat decreased linearly (p < 0.05), whereas linoleic and eicosadienoic acids, polyunsaturated fatty acids, PUFA:SFA ratio and ω6 contents increased (p < 0.05). Pearl millet silage ammoniated with urea allows for the production of good-quality lamb meat, with greater concentrations of polyunsaturated fatty acids. However, lambs fed diets with pearl millet ammoniated with up to 6% lead to a reduction of carcass characteristics without significantly affecting loin-eye area possibly associated with low palatability of the additive used. The lower acceptance of the silages with higher levels of urea is due to the ammonia retention in the material is attributed to the ammonization process. Thus, in spite of the benefits on lamb meat quality, it is suggested that the use of this additive in the ammonization of tropical forages be carried out with care, in limits of up to 6%.

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“…In this sense, in relation to chopped sugarcane in natura, Romão et al (2013) observed a reduction in the content of the A + B1 fractions of carbohydrates when the sugarcane was hydrolyzed with 0.75% CaO. In addition to this, increases were observed in these contents when 2.25-4.0% of CaO was used in the hydrolysis.…”

Section: Resultsmentioning

confidence: 85%

Rumen parameters and passage rate in cattle fed diets based on sugarcane hydrolyzed with calcium oxide

Lopes

Campos

Borges

et al. 2018

SCA

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Nine non-lactating Holstein x Gyr cattle were fed with rations based on chopped sugarcane supplied in natura (control) or hydrolyzed (fresh matter basis) for 24 h with 1% or 2% calcium oxide (CaO), which corresponds to 3.1% or 6.2% CaO on a dry matter (DM) basis, respectively. Ruminal parameters (pH and ammonia N, acetate, propionate and butyrate concentrations) as well as the kinetics of fluid and particulate passage in the gastrointestinal tract from cattle were evaluated. A design using three 3 x 3 contemporaneous Latin Squares (LS) was adopted. The studies of kinetics of fluid and particulate passage were performed using the external markers cobalt-EDTA and chromium-mordanted-NDF, respectively. The ruminal parameters were analyzed according to a 3 x 3 LS replicated three times with repeated measures in time using mixed models that included the fixed effects of treatment (level of CaO), time of sampling and their interaction and the following random effects: LS, animal(LS), period of LS and period*animal (LS). The kinetic parameters of fluid and particulate passage were analyzed using mixed models with treatment as a fixed effect and period of LS, animal(LS) and LS as random effects. The linear and quadratic effects of the treatments were analyzed using orthogonal contrasts. Significant differences were declared at P ? 0.05. No treatment*time interaction was observed (P > 0.05) for any ruminal parameter. A linear effect (P = 0.0279) of CaO inclusion on ruminal pH was observed, but there were no effects (P > 0.05) of the treatments on the ammonia N, acetate, butyrate and total volatile fatty acid ruminal concentrations. There was a quadratic effect (P = 0.05) of the addition of CaO on the ruminal propionate concentration. There was no effect (P > 0.05) of the treatments on the particulate rate of passage in the rumen as well as on the mean retention time in this compartment and in the total gastrointestinal tract. On the other hand, the addition of CaO to sugarcane promoted a linear increase (P = 0.0258) in the particulate post-ruminal passage rate and, consequently, a linear reduction (P = 0.0363) of the mean retention time in the cecum-proximal colon. There was no effect (P > 0.05) of the sugarcane hydrolysis with CaO on the ruminal parameters of the kinetics of fluid passage (dilution rate, retention time and turnover rate). The addition of 3.1% or 6.2% CaO on a DM basis (1% or 2% CaO on a fresh matter basis, respectively) of sugarcane does not improve ruminal fermentation, nor does it increase the fluid or particulate passage in the rumen of non-lactating Holstein x Gyr cattle.

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Fracionamento de carboidratos e degradabilidade ruminal da cana-de-açúcar tratada com óxido de cálcio

Cited by 10 publications

References 14 publications

Qualitative parameters of sugarcane silages treated with urea and calcium oxide

Qualitative parameters of sugarcane silages treated with urea and calcium oxide

Effects of pearl millet silage ammoniation with urea on carcass and meat quality of lambs

Rumen parameters and passage rate in cattle fed diets based on sugarcane hydrolyzed with calcium oxide

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