Determining Diet. Spring Autumn Se Co Mo Tanzania Lick 2.3 0.3 2.9 Topsoil 1.7 23 5.1 Peru Lick 0.5...
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Transcript of Determining Diet. Spring Autumn Se Co Mo Tanzania Lick 2.3 0.3 2.9 Topsoil 1.7 23 5.1 Peru Lick 0.5...
Se Co MoTanzania 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.
Micronutrients
Natural Salt Licks
HerbivoresDietary Challenge?
Conifer needles
Other plant
berries
0102030405060708090
100
Ja
n
Ma
r
Ma
y
Ju
l
Se
p
No
v
cacti
Beans/seeds
Grass,tubers
0
2 0
4 0
6 0
8 0
10 0
Spring Summer F all W inter
0
2 0
4 0
6 0
8 0
10 0
Spring Summer F all W inter
0
2 0
4 0
6 0
8 0
10 0
Spring Summer F all W inter
Measuring nitrogen
In food
In feces
Big
horn
ew
e m
ass
gain
Fecal Nitrogen
Cha
nge
in G
rous
e D
ensi
ty
Nitrogen (% dry matter)
02468
101214161820
M 1 inner M 1 terminal M 2 inner
Ca o
xalate C
on
centratio
nPreference
Javelina Example ofDietary Trade offs–
Pro
tein
co
nce
ntr
atio
n
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 lactationThe 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
KFI = Fat/Kidney X 100