Impact of grazing management on forage qualitative characteristics: a review

Tesk, C. R. M.; Pedreira, B. C. e; Pereira, D. H.; Pina, Douglas dos Santos; Ramos, T. A.; Mombach, M. A.

doi:10.36560/1152018667

Cited by 18 publications

(13 citation statements)

References 33 publications

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“…Therefore, it is likely that HAL was sufficient to support maximum ADG for all systems during the dry season. In general, it can be concluded that grazing management using canopy height targets improves canopy structure and nutritive value (Tesk et al, ), which increases the likelihood of optimizing grazing efficiency and forage intake (Pedreira, Silva, Pedreira, & Sollenberger, ). In addition, all systems provided herbage CP levels 1.6‐fold (L and CL) or 1.85‐fold (LF and CLF) greater than those recommended for grazing beef cattle (>70 g/kg; Minson ).…”

Section: Discussionmentioning

confidence: 99%

Forage and animal production on palisadegrass pastures growing in monoculture or as a component of integrated crop–livestock–forestry systems

Carvalho

Domiciano

Mombach

et al. 2019

Grass and Forage Science

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To meet the global demand for animal protein, sustainable intensification of existing livestock systems may be possible, especially through integration of livestock with crops or forestry. Thus, our objective was to compare forage production and animal performance in grass monoculture and integrated systems in the Brazilian Amazon biome. The four systems were (a) livestock (L) with Marandu palisadegrass {Brachiaria brizantha (Hochst. ex A. Rich.) R. D. Webster} as monoculture, (b) palisadegrass pastures integrated with eucalyptus trees (Eucalyptus urograndis; hybrid of Eucalyptus grandis W. Hill ex Maiden and Eucalyptus urophylla S. T. Blake) arranged in three‐row groves with groves spaced 30 m apart (livestock–forestry; LF), (c) palisadegrass after two years of crops (crop–livestock; CL) and (d) palisadegrass after two years of crops with single rows of eucalyptus trees spaced 37 m apart (crop–livestock–forestry; CLF). From July 2016 to July 2017, all experimental units were continuously stocked using a variable stocking rate. Greater herbage accumulation (HA) occurred in CL and CLF in comparison with L and LF (21,310, 24,050, 19,500 and 18,890 kg DM/ha respectively). The gain per hectare of L, LF and CL (average of 932 kg ha–1) was less than CLF (1,190 kg ha–1). Average daily gain was similar among systems (0.69 kg/day). We conclude that integrated systems can support similar (LF or CL) or greater (CLF) levels of animal production than palisadegrass monocultures while increasing diversity of outputs, thereby providing a greater range of viable systems for livestock production in the Brazilian Amazon biome.

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Section: Discussionmentioning

confidence: 99%

Forage and animal production on palisadegrass pastures growing in monoculture or as a component of integrated crop–livestock–forestry systems

Carvalho

Domiciano

Mombach

et al. 2019

Grass and Forage Science

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“…Grazing management, by controlling intensity and frequency of defoliation (Pedreira, Braga, & Portela, 2017a), is an important tool for optimizing pasture productivity, persistence, and nutritive value. Grazing strategies should consider grass physiological responses (Pedreira & Pedreira, 2007), as well as canopy structure and nutritive value changes (Tesk et al., 2018).…”

Section: Introductionmentioning

confidence: 99%

Herbage responses of Tamani and Quênia guineagrasses to grazing intensity

et al. 2020

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New forage cultivars require defoliation studies for recommending proper grazing management. Our objective was to characterize herbage accumulation (HA), plantpart composition and nutritive value of guineagrass [Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs] rotationally stocked under two grazing intensities. The experimental design was a randomized complete block with three replicates of a 2 × 2 factorial arrangement of two guineagrass cultivars ('BRS Quênia' and 'BRS Tamani') and two grazing intensities. Heavy (HGI) and lax (LGI) grazing intensities were imposed as post-grazing stubble heights: 15 and 25 cm for Tamani, and 20 and 35 cm for Quênia, respectively. The experimental period was from -grazing HM was sampled as two strata above the stubble height, each comprising 50% of the sampled height (upper and lower stratum). Total herbage accumulation was similar across years, cultivars, and intensities (16,810 kg DM ha −1 ). Quênia and Tamani had the greatest HA during summer. The leaf proportion was least in the HGI pastures. Under HGI, the lower stratum of both cultivars had the greatest stem proportion and the least nutritive value. The greatest herbage CP concentration and the least NDF, ADF, iNDF and LIG concentrations occurred in the upper stratum. Based on these results, 35 and 55 cm are recommended as target heights for initiation of grazing, and 25 and 35 cm as post-grazing stubble heights for Tamani and Quênia, respectively.

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“…Guará and Marandu also had a greater leaf proportion than Tupi, which had the greatest stem accumulation and proportion (Table 4). These responses highlight the leafy growth characteristic of Guará and Marandu, an important trait often related to herbage digestibility (Vendramini et al., 2019) and N concentration (Irving, 2015; Taiz, Zeiger, Møller, & Murphy, 2017), resulting in greater nutritive value (Euclides et al., 2016; Tesk et al., 2018).…”

Section: Discussionmentioning

confidence: 95%

Herbage accumulation, canopy characteristics, and nutritive value of tropical grasses in the Amazon biome

et al. 2020

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Forage species diversification reduces risk associated with forage–livestock production. In the Amazon biome, an alternative is needed to ‘Marandu’ palisadegrass [Urochloa brizantha (Hochst. ex A. Rich.) R.D. Webster] because of Marandu death syndrome. Our objective was to compare herbage accumulation (HA), canopy characteristics, and nutritive value of Marandu with two alternative grasses, ‘Guará’ (Paspalum regnellii Mez) and ‘Tupi’ [Urochloa humidicola (Rendle) Morrone & Zuloaga]. During 2 yr, grasses were clipped to a 12‐cm stubble height every 28 (rainy season) or 42 d (dry season). Annual HA did not differ across years for Guará (13.7 Mg dry matter [DM] ha−1) and Tupi (12.2 Mg DM ha−1); however, Marandu HA was 30% less in the second than the first year. Marandu had greatest annual HA in the first year (15.5 Mg DM ha−1), and Guará was superior to the other grasses in the second year (13.5 Mg DM ha−1). Tupi had the least leaf proportion among grasses in both rainy and dry seasons, and its leaf proportion was greater in the dry than rainy season (715 vs. 610 g kg−1). Greatest stem proportion was observed in Tupi and the least stubble mass occurred in Guará (2000 kg DM ha−1). When differences in crude protein occurred, Tupi concentrations (80–130 g kg−1) were less than either Guará (97–157 g kg−1) or Marandu (81–139 g kg−1). Overall, Tupi and Guará HA and nutritive value support their recommendation as alternatives to Marandu monoculture in Amazon forage‐based livestock systems.

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Impact of grazing management on forage qualitative characteristics: a review

Cited by 18 publications

References 33 publications

Forage and animal production on palisadegrass pastures growing in monoculture or as a component of integrated crop–livestock–forestry systems

Forage and animal production on palisadegrass pastures growing in monoculture or as a component of integrated crop–livestock–forestry systems

Herbage responses of Tamani and Quênia guineagrasses to grazing intensity

Herbage accumulation, canopy characteristics, and nutritive value of tropical grasses in the Amazon biome

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