From Nutrient
Requirements of Sheep, Sixth Revised Edition (1985),
Subcommittee on Sheep Nutrition, Committee on Animal Nutrition,
Board on Agriculture, Nation Research Council, National
Academy Press, Washington, D.C. (posted with permission).
|
TABLE 2 Nutrient Concentration in Diets for Sheep (expressed
on 100 Percent Dry Matter Basisa)
|
|
Body weight
|
Weight change
per day |
Energyb
|
Example diet
proportions
|
|
|
|
|
|
|
TDNc
|
DE
|
ME
|
Concentrate
|
Forage
|
Crude protein
|
Calcium
|
Phosphorus
|
Vitamin
A activity
|
Vitamin
E activity
|
|
(kg)
|
(lb)
|
(g)
|
(lb)
|
%
|
(Mcal/kg)
|
(Mcal/kg)
|
%
|
%
|
%
|
%
|
%
|
(IU/kg)
|
(IU/kg)
|
|
Ewesd
|
|
Maintenance
|
|
70
|
154
|
10
|
0.02
|
55
|
2.4
|
2.0
|
0
|
100
|
9.4
|
0.20
|
0.20
|
2,742
|
15
|
|
Flushing-2 weeks prebreeding and first 3 weeks of breeding
|
|
70
|
154
|
100
|
0.22
|
59
|
2.6
|
2.1
|
15
|
85
|
9.1
|
0.32
|
0.18
|
1,828
|
15
|
|
Nonlactating-First 15 weeks gestation
|
|
70
|
154
|
30
|
0.07
|
55
|
2.4
|
2.0
|
0
|
100
|
9.3
|
0.25
|
0.20
|
2,350
|
15
|
|
Last 4 weeks gestation (130-150% lambing rate expected)
or last 4-6 weeks lactation suckling singlese
|
|
70
|
154
|
180 (0.45)
|
0.40 (0.10)
|
59
|
2.6
|
2.1
|
15
|
85
|
10.7
|
0.35
|
0.23
|
3,306
|
15
|
|
Last 4 weeks gestation (180-225% lambing rate expected)
|
|
70
|
154
|
225
|
0.50
|
65
|
2.9
|
2.3
|
35
|
65
|
11.3
|
0.40
|
0.24
|
3,132
|
15
|
|
First 6-8 weeks lactation suckling singles or last
4-6 weeks lactation suckling twinse
|
|
70
|
154
|
-25 (90)
|
-0.06 (0.20)
|
65
|
2.9
|
2.4
|
35
|
65
|
13.4
|
0.32
|
0.26
|
2,380
|
15
|
|
First 6-8 weeks lactation suckling twins
|
|
70
|
154
|
-60
|
-0.13
|
65
|
2.9
|
2.4
|
35
|
65
|
15.0
|
0.39
|
0.29
|
2,500
|
15
|
|
Ewe Lambs
|
|
Nonlactating-First 15 weeks gestation
|
|
55
|
121
|
135
|
0.30
|
59
|
2.6
|
2.1
|
15
|
85
|
10.6
|
0.35
|
0.22
|
1,668
|
15
|
|
Last 4 weeks gestation (100-120% lambing rate expected)
|
|
55
|
121
|
160
|
0.35
|
63
|
2.8
|
2.3
|
30
|
70
|
11.8
|
0.39
|
0.22
|
2,833
|
15
|
|
Last 4 weeks gestation (130-175% Lambing rate expected)
|
|
55
|
121
|
225
|
0.50
|
66
|
2.9
|
2.4
|
40
|
60
|
12.8
|
0.48
|
0.25
|
2,833
|
15
|
|
First 6-8 weeks lactation suckling singles (wean by
8 weeks)
|
|
55
|
121
|
-50
|
0.22
|
66
|
2.9
|
2.4
|
40
|
60
|
13.1
|
0.30
|
0.22
|
2,125
|
15
|
|
First 6-8 weeks lactation suckling twins (wean by 8
weeks)
|
|
55
|
121
|
-100
|
-0.22
|
69
|
3.0
|
2.5
|
50
|
50
|
13.7
|
0.37
|
0.26
|
2,292
|
15
|
|
Replacement Ewe Lambsf
|
|
30
|
66
|
227
|
0.50
|
65
|
2.9
|
2.4
|
35
|
65
|
12.8
|
0.53
|
0.22
|
1,175
|
15
|
|
40
|
88
|
182
|
0.40
|
65
|
2.9
|
2.4
|
35
|
65
|
10.2
|
0.42
|
0.18
|
1,343
|
15
|
|
50-70
|
110-154
|
115
|
0.25
|
59
|
2.6
|
2.1
|
15
|
85
|
9.1
|
0.31
|
0.17
|
1,567
|
15
|
|
Replacement Ram Lambsf
|
|
40
|
88
|
330
|
0.73
|
63
|
2.8
|
2.3
|
30
|
70
|
13.5
|
0.43
|
0.21
|
1,175
|
15
|
|
60
|
132
|
320
|
0.70
|
63
|
2.8
|
2.3
|
30
|
70
|
11.0
|
0.35
|
0.18
|
1,659
|
15
|
|
80-100
|
176-220
|
270
|
0.60
|
63
|
2.8
|
2.3
|
30
|
70
|
9.6
|
0.30
|
0.16
|
1,979
|
15
|
|
Lambs Finishing-4 to 7 months oldg
|
|
30
|
66
|
295
|
0.65
|
72
|
3.2
|
2.5
|
60
|
40
|
14.7
|
0.51
|
0.24
|
1,085
|
15
|
|
40
|
88
|
275
|
0.60
|
76
|
3.3
|
2.7
|
75
|
25
|
11.6
|
0.42
|
0.21
|
1,175
|
15
|
|
50
|
110
|
205
|
0.45
|
77
|
3.4
|
2.8
|
80
|
20
|
10.0
|
0.35
|
0.19
|
1,469
|
15
|
|
Early Weaned Lambs-Moderate and rapid growth potentials
|
|
10
|
22
|
250
|
0.55
|
80
|
3.5
|
2.9
|
90
|
10
|
26.2
|
0.82
|
0.38
|
940
|
20
|
|
20
|
44
|
300
|
0.66
|
78
|
3.4
|
2.8
|
85
|
15
|
16.9
|
0.54
|
0.24
|
940
|
20
|
|
30
|
66
|
325
|
0.72
|
78
|
3.3
|
2.7
|
85
|
15
|
15.1
|
0.51
|
0.24
|
1,085
|
15
|
|
40-60
|
88-132
|
400
|
0.88
|
78
|
3.3
|
2.7
|
85
|
15
|
14.5
|
0.55
|
0.28
|
1,253
|
15
|
aValues in Table 2 are calculated
from daily requirements in Table 1 divided by DM intake. The
exception, vitamin E daily requirements /head, are calculated
from
vitamin E/kg diet x DM intake.
bOne kilogram TDN = 4.4 Mcal DE
(digestible energy); ME (metabolizable energy) = 82% of DE. Because
of rounding errors, values in Table 1 and Table 2 may
differ.
cTDN calculated on following basis:
hay DM, 55% TDN and on as-fed basis 50% TDN; grain DM, 83% TDN
and on as-fed basis 75% TDN.
dValues are for ewes in moderate
condition. Fat ewes should be fed according to the next lower
weight category and thin ewes at the next higher weight category.
Once desired or moderate weight condition
is attained, use that weight category through all production
stages.
eValues in parentheses are for
ewes suckling lambs the last 4-6 weeks of lactation.
fLambs intended for breeding;
thus, maximum weight gains and finish are of secondary importance.
gMaximum weight gains expected.
