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Determining Diet

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Protein in diet. When is excess urea produced? Ca oxalate Concentration. Preference ... diet. Assessing Condition. Body condition. Ungulate rumps. Kidney fat ... – PowerPoint PPT presentation

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Title: Determining Diet


1
Determining Diet
2
Spring
Autumn
3
Micronutrients
Se Co Mo Tanzania Lick 2.3
0.3 2.9 Topsoil 1.7 23
5.1 Peru Lick 0.5 13 0.7
Topsoil 0.2 13 0.7 Mills et
al J Zool 2007.
Natural Salt Licks
4
(No Transcript)
5
(No Transcript)
6
Carnivores Dietary Challenge?
7
Herbivores Dietary Challenge?
berries
Other plant
Conifer needles
Beans/seeds
Grass, tubers
cacti
8
Foregut fermenters Ruminants
Hindgut fermenters
Cervidae
Bovidae
9
Forbs
Browse
Grasses
10
(No Transcript)
11
Antilocapra americana
Availability
Diet
Preference
12
Measuring nitrogen
In food In feces
Change in Grouse Density
Nitrogen ( dry matter)
13
Nitrogen in urine?
Urea Creatinine Ratio
When is excess urea produced?
Protein in diet
14
Preference
Protein concentration
Ca oxalate Concentration
Javelina Example of Dietary Trade offs
15
Assessing Condition
8 protein diet
16 protein diet
16
Body condition Ungulate rumps
17
Furcula wishbone fat
Kidney fat
Bone marrow fat
18
KFI Fat/Kidney X 100
Fat deposition can begin during summer in bucks
but may be delayed 2 to 3 months in does because
of the extreme energy demands placed on does by
lactation The most appropriate application of fat
indices is interpreting area differences within
the same season and year or yearly differences
within the same area and season
19
Measuring Stress - Adrenals and Stress Hormones
Fecal corticoids
Free Ranging Captive Adrenal
glands
Terio et al. 2004
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