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Clearcutting Brazilian Semiarid Tropics: Observations on Its Effects on Small Ruminant Nutrition during the Dry Season
Author
Kirmse, R. D.
Provenza, F. D.
Malechek, J. C.
Publisher
Society for Range Management
Publication Year
1987-09-01
Body

Small ruminant production in northeast Brazil is limited by prolonged nutritional stress during the dry season. Our study assessed the effects of clearcutting woody vegetation on the nutrition of goats and sheep during the initial dry season following clearing. Dry matter intake g day-1 was higher for animals on cleared than on uncleared areas (818 vs. 627; P<0.05). Extrusa from esophageally fistulated animals grazing cleared, as opposed to uncleared, areas was more digestible (52 vs. 47%; P<0.05), was similar in crude protein (7.1 vs. 7.1%; P<0.05), and was lower in neutral detergent fiber (49 vs. 51%; P<0.05) and lignin (14 vs. 16%; P<0.05). Intake and diet quality declined on both cleared and uncleared areas as forage availability declined. Animals on cleared areas benefitted from increased availability of herbs and of biomass from palatable trees that coppiced and retained green leaves throughout much of the dry season. Animals on uncleared areas relied heavily on leaf litter from trees, which provided a poorer quality, but persistent, source of forage throughout the dry season. This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020

Language
en
Resource Type
Text
Document Type
Journal Issue/Article
Digital Object Identifier (DOI)
10.2307/3899604
Additional Information
Kirmse, R. D., Provenza, F. D., & Malechek, J. C. (1987). Clearcutting Brazilian semiarid tropics: observations on its effects on small ruminant nutrition during the dry season. Journal of Range Management, 40(5), 428-432.
IISN
0022-409X
OAI Identifier
oai:repository.arizona.edu:10150/645147
Journal Volume
40
Journal Number
5
Journal Pages
428-432
Journal Name
Journal of Range Management
Keywords
forest litter
tropics
north east brazil
clearcutting
forests
dry seasons
animal nutrition
semiarid zones
sheep
goats
grazing
forage
feed intake