Parâmetros nutricionais de novilhas Nelore em pastejo de capim marandu recebendo suplemento energético, proteico e múltiplo no período de transição seca-águas

Pesqueira-Silva, Lilian Chambó Rondena; Zervoudakis, Joanis Tilemahos; Araújo, Cláudio Vieira de; Cabral, Luciano da Silva; Hatamoto-Zervoudakis, Luciana Keiko; Oliveira, André Alves de; Silva-Marques, Renata Pereira da

doi:10.5433/1679-0359.2015v36n5p3293

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…High ADF and iNDF contents are related to food quality and also indicate a higher proportion of fibrous constituents more resistant to digestion, such as resistant pentosans, cellulose, lignin, and cutin, which are cell wall components responsible for the low forage digestibility (VAN SOEST, 1994). In addition, NDF together with ADF and iNDF are determinants in the repletion process, i.e., the ability of the food to promote a physical filling in the rumen, which directly affects voluntary intake (COSTA et al, 2011, PESQUEIRA-SILVA et al, 2015.…”

Section: Morphology and Structure Of The Foragementioning

confidence: 99%

Potential of methane and carbon dioxide in vitro production by Urochloa hybrid subjected to periods of coexistence with weeds

Meurer¹,

Brito²,

Marchi

et al. 2020

Biosci. J.

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The increased world population has raised the demand for animal proteins, forcing livestock to become productive, efficient, and environmentally sustainable. This study aimed to assess the effect of weed coexistence on productivity, nutritional quality, and potential production of greenhouse gases (GHG) by Convert HD364 grass (Urochloa hibrida cv. Mulato II) under pasture renovation conditions. The experiment was carried out in a randomized block design with four replications and treatments consisting of eight coexistence periods: 0, 15, 30, 45, 60, 75, 90, and 120 days after seedling emergence. Phytosociological assessments were performed in the weed community at the end of each coexistence period. The Convert HD364 grass was assessed for the morphological and chemical-bromatological parameters and for the GHG emission potential. Productivity, nutritional quality, and energy value of the Convert HD364 grass decreased proportionally with the increased period of weed coexistence. The non-coexistence with weeds results in a better in vitro digestibility of organic matter and, consequently, decreases the potential of GHG emission by the dry matter of the Convert HD364 grass.

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Section: Morphology and Structure Of The Foragementioning

confidence: 99%

Potential of methane and carbon dioxide in vitro production by Urochloa hybrid subjected to periods of coexistence with weeds

Meurer¹,

Brito²,

Marchi

et al. 2020

Biosci. J.

View full text Add to dashboard Cite

show abstract

“…Similarly, the increase in iNDF contents ( Figure 5C) reflects on the reduction of forage quality, since this component negatively affects animal consumption. The NDF, together with the ADF and iNDF, are determinants in the repletion process, that is, the food's ability to promote physical filling in the rumen, which directly affects voluntary consumption (Costa et al, 2011, Pesqueira-Silva et al, 2015.…”

Section: Discussionmentioning

confidence: 99%

Potential of Greenhouse Gas Production by Guinea Grass Subjected to Weed Competition

Marchi¹,

Sousa²,

Marques³

et al. 2019

JAS

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The world population growth and the increasing purchasing power have raised the demand for animal proteins, especially meat and milk. This has made it essential to intensify livestock production by making it productive, efficient and at the same time sustainable, which today is a great challenge for cattle ranchers. The objective of this study is to evaluate the effects of coexistence with weeds on productivity, nutritional quality and potential of greenhouse gas (GHG) emission by Guinea grass (Panicum maximum cv. Mombasa) in pasture renewal conditions. The experiment was set up in randomized blocks, four replications, with treatments consisting of eight periods of coexistence: 0, 15, 30, 45, 60, 75, 90 and 120 days after seedlings emergence. Phyto-sociological evaluations were performed in the weed community at the end of each coexistence period. The Guinea grass was evaluated as for morphological, chemical and bromatological parameters and as for the potential of total gas, methane and carbon dioxide emission. The results show that productivity, nutritional quality and energy value of Guinea grass decreases proportionally to the increase in the period of coexistence with weeds. The non-coexistence with weeds provides a better in vitro digestibility of organic matter and, consequently, decreases the GHG emission potential by the dry matter of Guinea grass.

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Influence of energy supplementation on associative effects in Nellore bulls on a tropical pasture during the rainy season

Stahlhofer

Valente

Barros

et al. 2021

Semina: Ciênc. Agrár.

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The objective of this study was to evaluate the influence of energy supplementation on associative effects between forage and concentrate supplements and on the performance of beef cattle on a tropical pasture during the rainy season. Twenty-eight Nellore bulls averaging 19 months of age and 325.2 ± 4.1 kg were allotted to a completely randomized design and distributed into four paddocks of two hectares each with a tropical pasture for 84 d. The treatments consisted of bulls on Urochloa brizantha cv. Xaraés pasture without concentrate supplementation or bulls on Urochloa brizantha cv. Xaraés pasture receiving concentrate supplementation at 15 (S15), 30 (S30) or 45% (S45) of the total digestible nutrients (TDN) requirement All bulls had ad libitum access to mineral supplementation. The amount and chemical composition of the supplement were adjusted every 28 d. Forage and supplement intakes were evaluated in all animals using fecal markers. Crude protein: digestible organic matter ratio decreased with supplementation; consequently, the imbalance between dietary protein and energy increased. Forage intake decreased with increasing supplementation. The substitution rates of pasture for supplementary feed were 0.14, 0.33, and 0.46 for bulls from S15, S30, and S45 treatments, respectively. However, the apparent DM digestibility increased linearly with supplementation level. Supplementation improved the assimilation of ammonia-N in the rumen. Energy supplementation for Nellore bulls on tropical pastures during the rainy season provides excess energy relative to protein, resulting in a substitution effect of supplement intake on forage intake. Moreover, energy supplementation does not improve body weight gain. Protein sources should be added to supplements for balancing protein and energy levels, thereby reducing a likely substitution effect.

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Parâmetros nutricionais de novilhas Nelore em pastejo de capim marandu recebendo suplemento energético, proteico e múltiplo no período de transição seca-águas

Cited by 3 publications

References 2 publications

Potential of methane and carbon dioxide in vitro production by Urochloa hybrid subjected to periods of coexistence with weeds

Potential of methane and carbon dioxide in vitro production by Urochloa hybrid subjected to periods of coexistence with weeds

Potential of Greenhouse Gas Production by Guinea Grass Subjected to Weed Competition

Influence of energy supplementation on associative effects in Nellore bulls on a tropical pasture during the rainy season

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