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Supplemental polyethylene glycol influences preferences of goats browsing blackbrush
Year:
2001
Source of publication :
Journal of Range Management
Authors :
Perevolotsky, Avi
;
.
Silanikove, Nissim
;
.
Volume :
54
Co-Authors:
Titus, C.H., Department of Rangeland Resources, Utah State University, Logan, UT 84322-5230, United States
Provenza, F.D., Department of Rangeland Resources, Utah State University, Logan, UT 84322-5230, United States
Perevolotsky, A., Department of Rangeland Resources, Utah State University, Logan, UT 84322-5230, United States
Silanikove, N., Department of Rangeland Resources, Utah State University, Logan, UT 84322-5230, United States
Rogosic, J., Department of Rangeland Resources, Utah State University, Logan, UT 84322-5230, United States
Facilitators :
From page:
161
To page:
165
(
Total pages:
5
)
Abstract:
Supplemental polyethylene glycol (PEG) increases intake of foods high in tannins, but it is not known if PEG affects preference when herbivores forage on a variety of foods that differ in concentrations of macronutrients and tannins. We investigated how macronutrients, tannins, and PEG affected preferences of goats (Caprus hircus) for current season's and older growth twigs from the shrub blackbrush (Coleogyne ramosissima Torr.). In blackbrush, current season's twigs are higher than older twigs in macronutrients, but goats prefer older twigs because high levels of tannins in current season's twigs decrease preference. We conducted a pen trial and a paddock trial. During the 7-day pen trial, goats were offered current season's twigs and older twigs throughout the day. Eight goats were supplemented with 20 g PEG mixed with 100 g ground alfalfa (Medicago sativa L.) pellets, and 8 goats were supplemented with 100 g ground alfalfa pellets. Goats supplemented with PEG ate more current season's twigs than goats that did not receive PEG (P = 0.04). During the 17-day paddock trial, 10 goats were supplemented with 50 g PEG mixed with ground alfalfa/barley (Hordeum vulgare L.), and 10 goats were supplemented with ground alfalfa/barley. Goats supplemented with PEG preferred current season's to older twigs, whereas PEG-unsupplemented goats preferred older to current season's twigs (P = 0.0001). Goats had equal preference for juniper (Juniperus osteosperma Torr.) trees (P = 0.243). Collectively, our findings show that supplemental PEG can change food preferences.
Note:
Related Files :
browsing
food supplementation
Goat
Medicago sativa
nutrient
shrubs
tannin
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Related Content
More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
19393
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:28
Scientific Publication
Supplemental polyethylene glycol influences preferences of goats browsing blackbrush
54
Titus, C.H., Department of Rangeland Resources, Utah State University, Logan, UT 84322-5230, United States
Provenza, F.D., Department of Rangeland Resources, Utah State University, Logan, UT 84322-5230, United States
Perevolotsky, A., Department of Rangeland Resources, Utah State University, Logan, UT 84322-5230, United States
Silanikove, N., Department of Rangeland Resources, Utah State University, Logan, UT 84322-5230, United States
Rogosic, J., Department of Rangeland Resources, Utah State University, Logan, UT 84322-5230, United States
Supplemental polyethylene glycol influences preferences of goats browsing blackbrush
Supplemental polyethylene glycol (PEG) increases intake of foods high in tannins, but it is not known if PEG affects preference when herbivores forage on a variety of foods that differ in concentrations of macronutrients and tannins. We investigated how macronutrients, tannins, and PEG affected preferences of goats (Caprus hircus) for current season's and older growth twigs from the shrub blackbrush (Coleogyne ramosissima Torr.). In blackbrush, current season's twigs are higher than older twigs in macronutrients, but goats prefer older twigs because high levels of tannins in current season's twigs decrease preference. We conducted a pen trial and a paddock trial. During the 7-day pen trial, goats were offered current season's twigs and older twigs throughout the day. Eight goats were supplemented with 20 g PEG mixed with 100 g ground alfalfa (Medicago sativa L.) pellets, and 8 goats were supplemented with 100 g ground alfalfa pellets. Goats supplemented with PEG ate more current season's twigs than goats that did not receive PEG (P = 0.04). During the 17-day paddock trial, 10 goats were supplemented with 50 g PEG mixed with ground alfalfa/barley (Hordeum vulgare L.), and 10 goats were supplemented with ground alfalfa/barley. Goats supplemented with PEG preferred current season's to older twigs, whereas PEG-unsupplemented goats preferred older to current season's twigs (P = 0.0001). Goats had equal preference for juniper (Juniperus osteosperma Torr.) trees (P = 0.243). Collectively, our findings show that supplemental PEG can change food preferences.
Scientific Publication
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