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- W4225399265 abstract "The evaluation of the ingestive behavior of ruminant animals is important to identify the animal response to the particularities of the different production systems. However, the five-minute evaluation technique requires personnel, making it difficult to adhere to farms and research in more complex pastoral systems. Thus, this study objected to evaluating the influence of pasture, silvopastoral, and feedlot production systems on the ingestive behavior of lambs and to defining the behavior recording interval in each of the systems. Twenty-four lambs were distributed in an experimental design in split plots. The plots were the production systems (pasture without shading - PS, silvopastoral - SS, and feedlot systems - FS) and the subplots were the behavior observation intervals (5, 10, 15, and 20 min.). In the pasture without shading and silvopastoral systems, the lambs were kept on Aruana grass (Megathyrsus maximus) pasture and supplemented with concentrate at 1.5% of body weight per day, on a dry matter (DM) basis. In the feedlot system, the lambs received a diet consisting of 200 g kg DM-1 of annual ryegrass hay (Lolium multiflorum Lam.) and 800 g kg DM-1 of concentrate. There was no interaction (P > 0.05) between the production system and the recording interval of behavioral activities. The time spent on food intake was higher (P < 0.05) in the pasture (533 min d-1) and silvopastoral (513 min d-1) systems than in the feedlot (225 min d-1). In contrast, for water intake, time was higher (P < 0.05) in the feedlot (21 min d-1) and lower in the silvopastoral system (5 min d-1). There was no difference (P > 0.05) between the systems for rumination and idle activities, of which daily averages were 378 and 587 min d-1, respectively. There was also no difference (P > 0.05) between the observation intervals for feed, water, rumination, and idleness activities. Lambs in pasture-based systems spend more time feeding, and feedlot lambs spend more time ingesting water. Feedlot lambs ruminate as much as grazing animals when fed hay, even though hay represents only 20% of the total diet. The recording interval of behavioral activities in these production systems can be up to 20 minutes." @default.
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- W4225399265 date "2022-04-27" @default.
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- W4225399265 title "Influence of pasture, silvopastoral, and feedlot production systems and the recording interval of behavioral activities on the ingestive behavior of lambs" @default.
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- W4225399265 doi "https://doi.org/10.5433/1679-0359.2022v43n4p1481" @default.
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