Title page for ETD etd-06072006-124208
|Type of Document
||Hewitt, David Glenn
||Ruffed grouse nutrition and foraging in the southern Appalachians
||Fisheries and Wildlife Sciences
|Kirkpatrick, Roy L.
|Bevan, David R.
|Fraser, James D.
|Stauffer, Dean F.
|Vaughan, Michael R.
|Webb, Kenneth E. Jr.
- Ruffed grouse Food Appalachian Region
|Date of Defense
Feeding trials.showed that ruffed grouse (Bonasa umbellus) performed well on
diets containing 20% Christmas hollyfem (Polystichum acrostichoides) or mountain
laurel (Kalmia latifolia), but diets containing 40% of these forages resulted in lower
protein and energy intake and the Christmas hollyfem diet caused a loss of body
mass. Grouse were not able to maintain themselves solely on evergreen leaves.
Glucuronide excretion was greatest for the 40% mountain laurel diet. Ornithine
conjugate excretion was greatest for a diet with 40% deciduous leaves. Sulfate
excretion did not vary among diets.
Intake rate of leaves was an asymptotic function of bite size when the density
of bites did not limit intake. Intake rate of leaves decreased at plants densities < 322
plants/m2. The maximum intake rate of leaves was 25% of the intake rate of aspen
buds observed in wild grouse (Huempfuer and Tester 1988). Intake rate of raisins
was an asymptotic function of bite size and was 20 times greater than the intake rate
of leaves. Ruffed grouse in the Southeast must forage for> 100 min/day under ideal
conditions to satisfy energy requirements.
|| Approximate Download Time
| 28.8 Modem
|| 56K Modem
|| ISDN (64 Kb)
|| ISDN (128 Kb)
|| Higher-speed Access
next to an author's name indicates that all
files or directories associated with their ETD
are accessible from the Virginia Tech campus network only.
If you have questions or technical
problems, please Contact DLA.