Effect of long-term, year-long grazing at moderate and heavy rates of stocking on diet selection and forage intake dynamics
Issue Date
1990-07-01Keywords
nutrient intakeprotein content
stocking rate
crude protein
dietary supplements
diets
cattle
in vitro digestibility
seasonal variation
botanical composition
grazing
forage
Metadata
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Pinchak, W. E., Canon, S. K., Heitschmidt, R. K., & Dowher, S. L. (1990). Effect of long-term, year-long grazing at moderate and heavy rates of stocking on diet selection and forage intake dynamics. Journal of Range Management, 43(4), 304-309.Publisher
Society for Range ManagementJournal
Journal of Range ManagementDOI
10.2307/3898922Additional Links
https://rangelands.org/Abstract
A 2-year experiment was conducted to determine the effect of 27 years of continuous grazing at moderate (7 ha/cow/yr) (MC) and heavy (5 ha/cow/yr) (HC) rates of stocking on seasonal diet selection and forage intake dynamics. Nine trials were conducted to determine differences between treatments in botanical composition and quality of diets and forage intake. Proportion of Texas wintergrass (Stipa leucothrica Trin. and Rupr.) in diets was greater (P<0.05) in the MC than HC treatment whereas amounts of warm-season short- and midgrasses were less. Differences between treatments in botanical composition of diets were related to differences in seasonal availability and live:dead tissue ratios of forages. However, such differences did not generally affect diet quality. Supplementation of HC cattle with 20% CP breeder cube either replaced forage organic matter intake (January 1986) or substituted for insufficient forage availability (February 1987). Supplementation never stimulated forage intake. Forage organic matter intake was restricted at forage standing crops below 700 kg/ha.Type
textArticle
Language
enISSN
0022-409Xae974a485f413a2113503eed53cd6c53
10.2307/3898922