Beef cattle performance in response to Ipyporã and Marandu brachiariagrass cultivars under rotational stocking management

Euclides, Valéria Pacheco Batista; Nantes, Nayana Nazareth; Montagner, Denise Baptaglin; Araújo, A. R. de; Barbosa, Rodrigo Amorim; Zimmer, A. H.; Valle, Cacilda Borges do

doi:10.1590/rbz4720180018

Cited by 11 publications

(28 citation statements)

References 22 publications

(29 reference statements)

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“…In contrast, the lower stratum had a greater stem proportion and greater NDF concentration. Similar results were reported for Marandu palisadegrass and ‘Ipyporã’ brachiariagrass ( B. ruziziensis × B. brizantha ) pastures, where the upper stratum had greater leaf proportion, CP, and IVOMD concentrations in leaf and lesser stem and dead material proportions, as well as lesser leaf lignin concentration than in the lower stratum (Euclides et al., 2018). Therefore, knowing the qualitative differences across canopy strata allows for devising managements where the upper stratum is offered to animals with greater production potential or requirements (e.g., lactating cows or replacement dairy heifers), and the lower stratum is grazed by animals with lesser nutritional requirement (e.g., dry beef cows).…”

Section: Discussionsupporting

confidence: 80%

“…In addition, grazing intensity affects the canopy structure (Carnevalli et al., 2006; Pedreira & Pedreira, 2007). Changes in the quality and quantity of light govern tiller dynamics (Gomes et al., 2019; Paciullo et al., 2017), which in turn affect physiological responses and ultimately forage nutritive value (Euclides et al., 2018).…”

Section: Discussionmentioning

confidence: 99%

“…The similar and high leaf proportions of Quênia and Tamani resulted in minor differences in NDF and ADF concentrations, which were mostly due to the grazing intensity (Euclides et al., 2019) or season effects (Carvalho, Pereira, Hungria, Camargo, & Da Silva, 2019; Euclides et al., 2018). Crude protein concentrations were affected only by season, with the least values in the last two seasons (spring 2016 and summer 2017) attributable to the increased stem and dead material proportions in the pre‐grazing HM.…”

Section: Discussionmentioning

confidence: 99%

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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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Section: Discussionsupporting

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Herbage responses of Tamani and Quênia guineagrasses to grazing intensity

et al. 2020

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“…The herbage mass was not affected by paddock or month, with an average of 3,892 ± 325 kg/ha of DM (Table 3). "Santa Fé" ICL was a good option to provide forage for cattle during the dry season, enabling considerable carrying capacity to reach the forage allowance of 8 kg DM/100 kg BW (8%), which seems reasonable for balancing gain per animal and per area (Euclides et al, 2018). Pastures must have at least 2,500 kg/ha of herbage mass in order to maximize supplementation results (Brandao et al, 2018); thus, there were no forage intake restrictions in this trial.…”

Section: Pasture Evaluationmentioning

confidence: 99%

Grazing behavior, growth performance, carcass yield and economic analysis of steers supplemented with concentrate in an integrated crop-livestock system

Batista¹,

Neto²,

Quadros³

et al. 2021

Int. J. Livest. Prod.

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This trial evaluated concentrate supplementation on grazing behavior, growth performance, carcass yield and economic analysis of off-season steer production in an integrated crop-livestock system (ICL). A randomized block design with the pastures (modules) as blocks, with 4 treatments, 4 groups of animals per treatment and 3 animals per group (N=48, 395±16 kg) was used to evaluate increasing levels of concentrate supplementation (1.0, 2.0, 3.0 and 4.0 kg/animal/day) containing 17% crude protein and 76% total digestible nutrients. The steers were kept in "Santa Fé" ICL Urocloa ruziziensis pastures during the dry season. Concentrate intake was 0.98, 1.45, 1.86, and 2.02 kg/animal/day, representing 0.23, 0.34, 0.44, and 0.47% of BW. Supplementation did not affect grazing time (P = 0.66); however, linearly decreased rumination time (P = 0.025) and increased idling (P = 0.043) and trough (P = 0.034) times. Average daily gain, carcass weight, dressing percentage and beef productivity linearly increased (P < 0.01) with increasing concentrate in the diets. All the supplementation levels were profitable, but the profit margin was greater in the highest level of concentrate supplementation. Concentrate supplementation to produce off-season Nellore steers in ICL was an efficient and profitable way to enhance growth performance and carcass yield without compromising grazing activity.

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“…The hybrid BRS Ipypora, introduced in 2017, is the result of a cross between Brachiaria ruziziensis and Brachiaria brizantha and is considered an important forage alternative for pasture-based animal production systems due to its quality as forage. Both cultivars have an average of 110 -130 g kg -1 DM crude protein (Echeverria et al, 2016;Euclides et al, 2018;Epifanio et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Fermentation characteristics and nutritive value of sweet sorghum silage with Paiaguas palisadegrass and Ipypora grass

Oliveira¹,

Costa²,

Rodrigues³

et al. 2021

Semina: Ciênc. Agrár.

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Ensiling sorghum with tropical forages has been shown to be a promising alternative for ruminant feed production, as this approach improves the quality of the sorghum silage. In this context, the goal of this study was to evaluate the fermentation characteristics and nutritive value of sweet sorghum silage made with different levels of Paiaguas palisadegrass and Ipypora grass. The experiment was conducted in a completely randomized 2 x 6 factorial design with four replications. Two forages (Paiaguas palisadegrass and Ipypora grass) were added to sorghum at six levels (0, 20, 40, 60, 80 and 100%), for a total of 48 experimental silos. After 50 days of fermentation, the silos were opened, and the fermentation profile and chemical composition of the silage were analysed. The results showed that the addition of Paiaguas palisadegrass and Ipypora grass to the sorghum silage increased the pH, buffering capacity and NH3-NT of the silage and reduced its dry matter content but did not affect its fermentation characteristics, which remained within an appropriate range. The addition of increasing levels of Paiaguas palisadegrass and Ipypora grass to the sorghum silage increased the crude protein and in vitro dry matter digestibility (IVDMD) of the silage and decreased the fibre fraction (neutral detergent fibre, acid detergent fibre and lignin) and ether extract contents. Adding tropical forages to sorghum silage material at levels above 40% is recommended. Among forage crops, addition of Paiaguas palisadegrass to sorghum silage resulted in higher content of crude protein and IVDMD. Mixed silages can be an effective alternative to improve the quality of forage sorghum silage.

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Beef cattle performance in response to Ipyporã and Marandu brachiariagrass cultivars under rotational stocking management

Cited by 11 publications

References 22 publications

Herbage responses of Tamani and Quênia guineagrasses to grazing intensity

Herbage responses of Tamani and Quênia guineagrasses to grazing intensity

Grazing behavior, growth performance, carcass yield and economic analysis of steers supplemented with concentrate in an integrated crop-livestock system

Fermentation characteristics and nutritive value of sweet sorghum silage with Paiaguas palisadegrass and Ipypora grass

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