Hemisal":1icj96kr said:
I am as new to this as they come...my questions will be very basic for this reason...aside from money matters, how many acres do you need per head of cattle? Breed is probably of some consideration...so assume black angus. And do paired cows count for 1, 2 ,or 1.5 for your herd count? heheh, sorry all, but i'm that new. any other considerations would be greatly appreciated, such as how many bales needed/month during the winter months, etc.
Hi Hemisal
Like everyone else says, it all depends on location, climate, precipitation, forage production, topography, and (most importantly) the condition your pastures are in.
So for instance if you live down in southern Alberta in the needle-and-thread, blue grama native grass area, your stocking rate is 4.2 AUM/acre (in good/late-seral condition). On the other hand, if your up in central Alberta in the Rough Fescue native range, your stocking rate is averaging out to be 1.7 AUM/acre (in good/late-seral condition). Now, toss in the condition your pasture is in (stocking rates for tame pasture is different than range pasture, mind you), whether it's in good condition or poor condition, and you can judge/calculate you stocking rates for a cow-calf pair easily. A 1000 lb cow with a calf counts for 1 AU (animal unit).
(Animal unit is considered to be one mature 450 kg (1000 lb) or the equivalent based upon average daily forage consumption of 11.8 kg (26 lb) of DM per day; Animal unit month (AUM) is the amount of feed or forage required by an animal unit for one month)
So, for instance, if you live in the parkland area, and your pasture is in good condition (0.5 acre/AUM), and you want to know how many cow-calf pairs you want to graze on a 50 acre pasture, then 50/0.5 = 100 AUMs (animal unit month). Now if your planning on grazing the pasture for 2 months, then that gives you 50 AU (or 50 Angus cow-calf pairs) to put on the pasture, at the most.
Now for number of bales per month in the winter...a 1000lb cow typically eats 26 lbs of dry matter (DM) per day. So if you got 50 head of cows, for instance, then you got a total of 1300 lbs of DM consumed per day. Now, for a whole month, that's 39000 lbs of DM consumed. With that, I'd say you need at least 40+ bales per month for that many cattle, and since the winter is as long as 6 months, that's a total of 240-250 bales. (If you got 1/5th of that herd size, then you only need 1/5th of the bales needed per month for 50 cow-calf pairs).
Sorry for the long post, but I hope that helps.