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- W2173030479 abstract "We investigated the hypothesis that not only forage allowance but also sward structure affects daily forage intake by beef heifers on natural grasslands of the Pampa Biome (southern Brazil). We used data from a long-term experiment, which has been managed by forage allowance levels since 1986. The objective was to investigate sward management targets that maximize daily forage intake. During January and December 2009, we evaluated the effect of forage allowance on forage mass, sward height and tussock frequency, and its consequences on dry matter intake (DMI). The experiment was arranged in a randomized complete block design with two replicates. Treatment was level of daily forage allowance (4, 8, 12, and 16 kg dry matter [DM] per 100 kg of animal body weight [BW]). Data were analyzed using regression, principal component analysis, and descriptive analyses from three-dimensional contour graphs with the data of sward structure, DMI, and DMI rate. Results demonstrated that DMI was positively correlated to forage allowance. However, higher levels of forage allowance can cause lower intake rates of forage and nutrients. We concluded that sward targets which promoted higher DMI and DMI rate were: daily forage allowance of ~ 12 kg of dry matter per 100 kg of the animal’s body weight, forage mass between 1 800 and 2 300 kg DM·ha–1, sward height between 11.5 and 13.4 cm, and tussock frequency lower than 30% of occurrence in the pastures. Within these targets, a high intake of nutrients was obtained, indicating the potential use of sward structure as a tool for managing natural grasslands in order to promote high intake of forage and nutrients by cattle." @default.
- W2173030479 created "2016-06-24" @default.
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- W2173030479 date "2016-01-01" @default.
- W2173030479 modified "2023-10-14" @default.
- W2173030479 title "Daily Forage Intake by Cattle on Natural Grassland: Response to Forage Allowance and Sward Structure" @default.
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- W2173030479 doi "https://doi.org/10.1016/j.rama.2015.10.002" @default.
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