On pasture corral design

Our sheep are on pasture 24x7.  We have perimeter fence and use electric to rotational graze.

I want to build a corral so I can worm them (give them a dewormer*).

Ideally, this would be a mobile arrangement so I can move it to the sheep instead of bringing them to the corral.  

Materials cost should be in tens or low hundreds of dollars, not thousands.  No tractor (can't always get a truck or tractor into the field because of wet conditions.)

Any ideas?  Anybody doing this?  I can come up with something using cattle panels and T posts, but it's going to be annoying to put in and remove and I'm no Temple Grandin, so I don't know if the sheep will mosey inside to the enticing alfalfa, or run away.  Anyone have a proven design?

*  Yes yes I know pasture management blah blah.  We're using the sheep to manage the pasture, we need to responsibly deworm the sheep until such time as the pasture isn't a petri dish for pole worms and liver fluke.

Can you get sheep hurdles?  Pretty well all the sheep farmers I knew in Wales had a supply of hurdles that they could construct pens with wherever they wanted.

The cost would depend on how many sheep you have to enclose at one time.  If you had access to the right sort of wood, I guess you could make your own, but the ones I'm familiar with were generally galvanised steel.

This video shows how they work, though this set up has a lamb feeder creep gate built in which wouldn't be necessary.



And here's another one showing how to make hurdles out of hazel, which might inspire you.



As for getting the sheep in there, I'm assuming without a dog, I would set it up a few days in advance, leaving one of the hurdles open as a 'gate'. Assuming your sheep know about being fed from a bucket, I'd then casually walk into the pen, tip some feed out on the floor, then just as casually walk away again. Some of them will figure out there is something good in there and even if they are nervous to start with, so long as one of them goes in they will all eventually get greedy and want some feed for themselves.  The next day repeat, but linger a bit after you leave the pen to watch what happens. If it's all going well, linger closer the next day, ideally until all of them have gone in, then walk away. It's likely that by day four you can wait at the gate and just close it behind them. If they're not used to being penned, I'd just leave them in there for a few minutes then let them out again. By then you should have them pretty well trained.

The irony is, I used to keep sheep without a dog, and now I have a sheepdog but no sheep.  But I still remember the fun of sheep training!

Good luck with it.  

UPDATE

Here's what we did.  Thanks for the suggestions.  $heep hurdle$ co$t real Money, and we didn't have time to source cheap used ones.  Likewise didn't have time to build our own.

We set up a cattle panel against the outside of a shed, secured to t-posts (easily removed with a post-remover).  The cattle panel was angled so one end was out pretty far from the shed side and the other end was only wide enough for one sheep. This makes a chute where one side is the cattle panel and the other is the shed wall.

On the wide end we put a piece of cattle panel as a gate, tied with baling twine (strong but easy to remove).  The piece of panel was left over from another project.  We had previously fenced off the shed, so the only access to the makeshift chute was the temporary gate.

At the narrow end of the chute we put an outdoor table flipped on its side.  Easy for us to move out of the way but hard for one sheep to push away.

We dumped a 2-string bale of alfalfa hay into the chute.

Oh, and we made sure to do this when the sheep had been on that paddock next to the shed for a few days and had already eaten everything they really, really like.

Every time a few sheep went in to eat alfalfa, we followed them in and closed the gate behind us.  Only one sheep could get to the end at a time and that wasn't enough mass to push the table out of the way.  A few sticks with the sharps and then push the table aside and let them out (into a nice fresh paddock with lots of really nice grass.)  Repeat.

Hiccups just took some time.  The last 5 sheep had possibly wised up to what was going on and wouldn't go in to eat the alfalfa until we left them alone for 30 minutes or so.  Came back after doing some other chores and found 4/5 eating the hay.  After the last sheep was left all by herself she went in pretty quickly.  The whole thing took about 22 hours.



A way to improve this for next time, we'll use some field fence and t posts to make a holding area.  Part of the reason the last 5 took so long was that with the rest of the herd gone, they could mosey around and look for clover and other goodies that the other sheep had missed.  This made them less interested in the hay.

Question:

We're not sure if the shed wall helped a lot.  It provided a nice secure area, but it's possible that the shade/shadow cast by the wall made the sheep less eager to go into the chute.