DEGRADABILIDADE RUMINAL DO CAPIM COLONIÃO (Panicum maximum Jacq. cv. Colonião) EM TRÊS IDADES PÓS-REBROTA

Garcez, Bruno Spíndola; Alves, Arnaud Azevêdo; Araújo, Daniel Louçana Costa; Lacerda, Marlúcia da Silva Bezerra; Souza, Layza Grabiella Costa; Carvalho, Lucielma Ferreira de

doi:10.21708/avb.2016.10.2.5513

Cited by 17 publications

(22 citation statements)

References 10 publications

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“…O consumo desses componentes se comportou conforme os consumos (g/dia e % do PV) de matéria seca. O consumo de PB (% do PV) na dieta com feno de massai foi igual ao observado por Mizubuti et al (2016) (Garcez et al, 2016).…”

Section: Resultsunclassified

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Consumo de nutrientes, comportamento ingestivo e desempenho de ovinos alimentados com fenos de gramíneas tropicais em diferentes intervalos entre cortes

Pereira

Lima

Assis

et al. 2018

Arq. Bras. Med. Vet. Zootec.

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Section: Resultsunclassified

“…Menores intervalos resultam em menores produções de matéria seca, porém proporcionam valor nutritivo mais elevado (Garcez et al, 2016).…”

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Consumo de nutrientes, comportamento ingestivo e desempenho de ovinos alimentados com fenos de gramíneas tropicais em diferentes intervalos entre cortes

Pereira

Lima

Assis

et al. 2018

Arq. Bras. Med. Vet. Zootec.

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show abstract

“…Comparing the values of the abovementioned authors to those on Table 5, there is a discrepancy in the values, which is the effect of the stage at which plants were harvested. According to Garcez et al (2016), degradation of each fraction is altered by the advance of the stages of the plant cycle, due to rising ADF, thickening of stems, and lignification of leaves.…”

Section: Data Inmentioning

confidence: 99%

Effect of advancing maturity stages of corn for silage on chemical characterization, digestibility and production costs

Souza

Neumann

Bumbieris

et al. 2021

Semina: Ciênc. Agrár.

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The goal of the present study was to evaluate the biomass and grain yield, the morphological and chemical composition, production costs and the ruminal disappearance of the whole corn plant and grain-free corn plant harvested at different reproductive stages. The experimental design was completely randomized, consisting of six treatments, where each treatment corresponded to a stage of corn maturity. The advance of plant cycle promoted an increase in dry biomass and grain yields per unit area, reducing production costs. Higher participation of grains and lower participation of structural components promoted a reduction in NDF and ADF, with the lowest values in dough grain (R4) and dent grain (R5) stages. The advancement of stages promoted an increase in production and a reduction in costs, but significantly reduced the quality of grain-free plants, increasing the NDF, ADF and ADL; but R4 and R5 presented NDFd of 84.80 % and 82.79 %, respectively, showing to be a good quality fiber. R4 stage had the highest rumen disappearance values after 24 and 48 hours of incubation. Based on chemical data, ruminal disappearance, ruminal degradation kinetics of the whole corn plant and without grains, the R4 stage of the evaluated hybrid is the stage at which the plant had the best quality, representing the appropriate stage to harvest the material for making silage, aiming at the production of a silage with good chemical quality.

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“…The potential degradability of PB showed a quadratic behavior with a maximum point in the replacement of 55.6% of corn by wheat middling and an average of 66.75%. The inconstant availability of N implies a worse ruminal utilization of the other nutritional components, where less degradation reduces the amount of N available for metabolism and a consequent reduction in microbial protein synthesis (Garcez et al, 2016). Despite the increase in DM degradability, diets with wheat middling above 55.6% need to be adjusted with protein sources of greater degradability to improve DP of BP and, consequently, balance the supply of protein and energy of the same fractions in the rumen.…”

Section: Thementioning

confidence: 99%

Ruminal parameters and in-situ degradability of rations with wheat middling substitution for corn

Brito¹,

Silva²,

Arruda³

et al. 2021

Semina: Ciênc. Agrár.

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This study aimed to evaluate the effect of substituting corn with wheat middling on the in-situ degradability of foods and ruminal parameters of cattle. The experiment was conducted at the Ruminant Studies Unit and the Laboratory of Food Analysis and Animal Nutrition of Londrina State University. Five rumen-fistulated cattle with an average weight of 521 ± 38.22 kg were housed in individual stalls. The experimental design used was a Latin square with five treatments (100% C, 75% C 25% WM, 50% C 50% WM, 25% C 75% WM, and 100% WM) and five periods of 25 days each. The pH and ammoniacal nitrogen (N-NH3) concentration in ruminal fluid was measured before feeding and 2, 4, 6, and 8 h after feeding in subdivided parcels. The in-situ degradability of dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF), and acid detergent fiber (ADF) were determined by incubating silage samples and measuring concentrates in the rumen of cattle. The levels of substitution of corn by wheat middling did not alter the pH and N-NH3 values but was influenced by the collection time. The N-NH3 presented quadratic behavior with a point of maximum rumen concentration (5.31 mgdL-1) reached 1.12 h after feeding. The pH presented quadratic behavior with a point of minimum (6.04) reached 4.32 h after feeding. The effective degradability (ED) of DM with 2, 5 and 8%h-1 of passage rate was influenced by the substitution of corn by wheat middling, with increasing linear behavior. The ED 2%h-1 varied from 46.19% to 50.24%, the ED 5%h-1 varied from 33.76% to 38.68%, and the ED 8%h-1 values ranged from 28.16% to 32.92% for the 100% C and 100% WM treatments. Higher values, for treatments with higher levels of substitution of corn by wheat middling, occurred owing to the lower fiber content and to the largest soluble fractions and degradation rate of DM in rations with wheat middling. The ED of CP and NDF with passage rates of 2, 5 and 8%h-1 presented quadratic behavior. The ED 2, 5 and 8%h-1 of CP presented maximums of 75.9%, 77.9%, and 86.2%, with averages of 52.02%, 45.93%, and 42.23%, respectively. The ED 2, 5 and 8%h-1 of NDF presented minimum points of 29.6%, 34.7%, and 35.2%, with averages of 41.60%, 33.43%, and 27.76%, respectively. Wheat middling can be used for total substitution of corn without damaging ruminal pH and N-NH3, in addition to improving the degradability of rations.

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DEGRADABILIDADE RUMINAL DO CAPIM COLONIÃO (Panicum maximum Jacq. cv. Colonião) EM TRÊS IDADES PÓS-REBROTA

Cited by 17 publications

References 10 publications

Consumo de nutrientes, comportamento ingestivo e desempenho de ovinos alimentados com fenos de gramíneas tropicais em diferentes intervalos entre cortes

Consumo de nutrientes, comportamento ingestivo e desempenho de ovinos alimentados com fenos de gramíneas tropicais em diferentes intervalos entre cortes

Effect of advancing maturity stages of corn for silage on chemical characterization, digestibility and production costs

Ruminal parameters and in-situ degradability of rations with wheat middling substitution for corn

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