Team Name
OFFICIAL 2011 Block & Bridle Stockmens Contest – Senior Team Problem
You are planning to graze a set of stocker steers for 200days from spring to fall on leased pasture. Past
experience tells you that to expect 1.5lb/d daily gain with a expected sell weight of about 725lbs.
1. If the average purchase weight is 450 lbs and the calves shrink
4% in transit to your farm. The average calf weight off the truck is?
450 lbs x (1-.04)= 450 x (.96)= 432lbs
2. Your experience indicates that you spend an average of
$6.50/hd in antibiotic treatment of the calves after delivery.
What is your total medicine expenditure for 70 calves?
70 calves x $6.50/calf = $455
3. If you use a stocking rate of 1.1 acre/hd, how many acres
of pasture should you have access to?
70 calves x 1.1 hd/acre= 77 acres
Lbs
1 decimal
432
$ 455
77 acres
4. Your lender has agreed to loan you 80% of your animal purchase
cost. If you paid $150/cwt, what is the amount of your operating
loan? (4.5 cwt x $150/cwt) x (70hd) x (.80) =$37,800
$ 37,800
5. If your lender charges you an annual interest rate of 6%, what is
your interest cost?
$ 1243
$37,800 x (.06) x (200d/365d)= $1243
6. If you rent the pasture for $30/acre what is your total pasture cost?
77 acres x $30 = $2310
$ 2310
7. The buyer you normally market calves through is not interested in
buying your calves at a heavier weight. You are considering adding an
implant to your management strategy and expect a 10% increase in steer
performance. How many days of grazing should you plan on that would
allow you to maximize total gain and still use your normal marketing channels?
167-182 days
accepted
days
1.5lb/d x 1.10 increase= 1.65lb/d (3 different ways)
a) 200 days x 1.50= (300lbs typical gain)/1.65lb/d= 182 days
b) (725 lbs final wt) – (450lbs purchase wt) = (275 lbs gain)/1.65lb/d=167 days
c) 725 lbs final wt) – (432lbs start wt) = (293 lbs gain)/1.65lb/d=178 days
8. How much would your interest cost be reduced by the reduction in grazing days?
$1243 interest/ 200 days= $6.22/d (3 different ways)
a) 200 days-167days= 33days x $6.22= $205.26
b) 200 days-182 days= 18 days x $ 6.22= $111.96
c) 200 days-178 days= 22 days x $ 6.22= $136.84
$ 112 – 205
accepted
9. Virginia Tech research indicates that supplementation with soyhulls at the rate
of 0.5% of their body weight would increase daily gain 0.3lb/d. What is the efficiency
that the feed is converted to extra gain?
10
(725+432)/2 = 578.5lbs aver wt x (.005 daily feed intake)= (3.0lb intake/d)/.3lbd gain=10
or
(725+450)/2= 587.5lbs aver wt x (.005 daily feed intake)=(3.0 intake/d)/.3lbd gain= 10
10. Historically you have had some trouble with coccidiosis in
backgrounded cattle. Feeding soyhulls allows inclusion of Rumensin.
How many grams of Rumensin should be included per ton of soyhulls
to achieve a daily intake of 200mg/d of Rumensin?
133 g
2000lbs/3lbs feed intake= 667feedings/ton x 200mg/feeding= 133,400mg/ton=133.4 g/ton
ms
gra