title: OreganoExtract Added into the Diet of Dairy Heifers Changes Feeding Behavior and Concentrate Intake.
abstract: This experiment aimed to describe the effects ofOreganoextract (OE) inclusion into the concentrate fed to dairy heifers on physiological parameters, feeding behavior, intake, and performance. Thirty-two Holstein heifers were randomly distributed into four treatments: C = control, without addition of OE; OE2.5 = 2.5 g; OE5.0 = 5.0 g and OE7.5 = 7.5 g ofOreganoextract per heifer/day. Feeding behavior and concentrate intake were assessed individually every day and total dry matter intake (DMI) was determined on the last week of the trial. Compared to control group, OE7.5 reduced by 32% the latency time to approach the feed bunk but increased by 6% the time spent eating the concentrate. Each inclusion of 2.5 grams of OE into the concentrate increased the occurrence of postingestive licking the feed bunk with abundant saliva production 1.2 times (P< 0.01) and tended to increase the occurrence of sneeze events 1.2 times (P< 0.10). No statistical difference was detected between treatments for total DMI, but concentrate DMI was 9% lower for OE7.5 when compared to control and OE2.5. The inclusion of 7.5 grams/day of OE causes small but negative effects in feeding behavior and concentrate intake, without change on total dry matter intake.
authors.affiliation: Animal Science Department, Federal University of Rio Grande do Sul, Bento Gonçalves Avenue 7712, District Agronomy, 91540-000 Porto Alegre, RS, Brazil.
authors.forename: Giovani Jacob
authors.initials: GJ
authors.lastname: Kolling
authors.affiliation: Animal Science Department, Federal University of Rio Grande do Sul, Bento Gonçalves Avenue 7712, District Agronomy, 91540-000 Porto Alegre, RS, Brazil.
authors.forename: Dejani Maíra
authors.identifier: 0000-0002-2705-2367
authors.initials: DM
authors.lastname: Panazzolo
authors.affiliation: Animal Science Department, Federal University of Rio Grande do Sul, Bento Gonçalves Avenue 7712, District Agronomy, 91540-000 Porto Alegre, RS, Brazil.
authors.forename: Alexandre Mossate
authors.identifier: 0000-0002-0919-6738
authors.initials: AM
authors.lastname: Gabbi
authors.affiliation: School of Agroecology, Federal University of Rio Grande (FURG), Marechal Floriano Peixoto Avenue 2236, 96170-000 São Lourenço do Sul, RS, Brazil.
authors.forename: Marcelo Tempel
authors.initials: MT
authors.lastname: Stumpf
authors.affiliation: Veterinary Large Animal Hospital, University of Brasilia, Granja do Torto, 70636-200 Brasília, DF, Brazil.
authors.forename: Marcel Batista
authors.identifier: 0000-0003-0555-6879
authors.initials: MB
authors.lastname: Dos Passos
authors.affiliation: Animal Science Department, Federal University of Rio Grande do Sul, Bento Gonçalves Avenue 7712, District Agronomy, 91540-000 Porto Alegre, RS, Brazil.
authors.forename: Eduardo Augusto
authors.initials: EA
authors.lastname: da Cruz
authors.affiliation: Animal Science Department, Federal University of Rio Grande do Sul, Bento Gonçalves Avenue 7712, District Agronomy, 91540-000 Porto Alegre, RS, Brazil.
authors.forename: Vivian
authors.identifier: 0000-0002-7670-7454
authors.initials: V
authors.lastname: Fischer
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D002417:Cattle; D004032:Diet / Q000662:veterinary; D005247:Feeding Behavior; D005260:Female; D031341:Origanum / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*
chemical_list: D010936:Plant Extracts