The term livestock unit (LSU) or ewe equivalent (EE) is used to express the annual feed requirement of a "standard" 55 kg breeding ewe rearing a single lamb.

Carrying capacities are based on stock numbers carried at 30 June.

Note: as goats may be browsing scrub and weeds, and because they do not readily consume clover, a direct LSU comparison with other livestock classes may not apply.

One livestock unit requires approximately 520 kg good-quality pasture per year.

Table of Livestock Conversion Factors
Livestock class  
Weight in kilograms
Production
LSU
Sheep
       
   
Weight at mating
Lambs weaned
 
 
 
45
90%
0.85
Ewe
55
100%
1.00
 
65
130%
1.25
         
   
Pre-winter weight
   
 
 
30
Slow growth rate
0.7
Hogget
40
Medium growth rate
1.0
 
50
Fast growth rate
1.2
         
Ram
 
75
-
0.8
         
Beef Cattle
 
350
Calves weaned
 
 
400
68%
3.7
Breeding cow
400
83%
4.4
 
450
88%
5.3
 
500
90%
6.3
Weaners
 
135-270
-
3.5
         
 
 
200-400
Slow growing
3.7
Heifers, steers, bulls
200-465
Rapid growing
4.6
 
350-500
Rapid growing
4.7
 
600
-
6.0
         
Dairy cattle
   
Fat yield (kg)
 
 
 
 
350
140
6.1
Cow
400
160
6.8
 
400
180
7.3
 
450
200
8.0
Jersey yearling
 
180-320
-
3.5
Fresian yearling
 
225-430
-
4.5
Jersey calf
 
25-180
-
2.0
Fresian calf
 
35-225
-
2.5

 

Deer (red)    
Fawning
 
Mature hind
100
 
90-95
1.9
15-27 mth hind
80-100
 
-
1.8
6-15 mth hind
50-80
 
-
1.2
   
Dressing %
   
Mature stag
185
59.9
 
2.2
15-27 mth stag
105-140
58.2
 
2.1
6-15 mth stag  
57.2
   
         
Deer (fallow)  
Fawning %
   
Use 0.4-05.5 of red deer values  
80-85
   
         
Goats (dairy)    
Milk yield (litres)
 
Does        
Grass only
50-60
 
550
2.0
Browsing
45
 
350
1.5
         
Goats (purebred angoras)    
Mohair (kg)
 
Does        
Stud
40
 
 

 -

2-2.5

1.0
Other  
0.7
Bucks        
Stud
50
 
 
3.5
1.0
Other    
0.8
Hoggets    
1.8-2
0.5
         
Goats (cashmere)    
Cashmere (g)
 
Does
25-35
 
 Feral av 30
Farmed av 60
0.7
Bucks
30-60
 
0.7
 
Beef Cows

To mate at 15 months

Approx. age (months)

Weight (kg)

 

Approx. age (months)

Weight (kg)

Weaning

5-6

180

1st calving

24

350-380

1st winter, June

10

220-250

2nd mating

27

340-390

1st mating

15

250-290

3rd winter

34

380-430

2nd winter

22

320-350

2nd calving

36

420-470


Mating at 2 yrs

Approx. 330 kg 2nd winter; 360 kg at mating; 480 kg at 1st calving

Beef Bulls, Steers, Heifers

These are desirable target liveweights for rapid finishing systems

Weaning 70 kg
Mid November 100 kg
Mid March 180 kg
Mid June 230 kg
1 September 270 kg
Mid December 410 kg*
Mid February 440 kg*

*Mid Dec to mid Feb is slaughter period

Sex effects

Steers and heifers will be ablut 10% and 20% lower in weight, respectively, than bulls.

 

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