The Accidental Smallholder Forum

Livestock => Sheep => Topic started by: Bionic on August 28, 2012, 10:24:32 am

Title: Does it hum?
Post by: Bionic on August 28, 2012, 10:24:32 am
OH noticed that the sheep were much closer to the electric fence this morning than they usually are.
When he checked the fence was not working. How do the sheep know?  Does the fence give off some sort of noise of something that only they can hear?
Sally
Title: Re: Does it hum?
Post by: suziequeue on August 28, 2012, 11:46:42 am
In my experience - most electric fences give off a little click each time the pulse goes through.... although I am not sure if this can be heard all the way down the wire.
 
I remember when I was small we used to listen to an electric fence before trying to get over it but I've lost so much of my high frequency hearing range that I would be unable to detct it now so - I think it probably does hum a little..... and of course - sheep don't go to rock concerts so their hearing is liekly to be alot better  ;D
 
Remember the triffids in John Wyndham's book (OK - they are not your average smallholding stock) - they could hear the electric fence.
Title: Re: Does it hum?
Post by: Mel Rice on August 28, 2012, 12:33:41 pm
My sheep know if a person goes near then the power often goes off (when I press the botton on the box) I dont always do it and they do get zapped but they do seem to check it by sniffing it...perhaps there is a static charge they can sense with their noses, Ive not noticed them listening but may be thats what they are doing when I think they are 'smelling'!
Title: Re: Does it hum?
Post by: robert waddell on August 28, 2012, 12:45:47 pm
pigs are better at sensing when the fence is down  i always put it down to there nose    but not smelling it :farmer:
Title: Re: Does it hum?
Post by: Pedwardine on August 28, 2012, 12:54:13 pm
Our rams pushed right through their tape fencing when it had 6000 volts going through it. They had full fleeces at the time. They feel it more when the fleece is shorter. My sheep (and donkeys) test fencing with their noses. It must give off a static charge. I've noticed also when I use a tester on my fences, if the surge is strong then it registers before the tester has even touched the fence!
Title: Re: Does it hum?
Post by: Fleecewife on August 28, 2012, 01:56:50 pm
The fence we used to use was battery powered and definitely made a tiny clicking noise - I can't have gone to enough rock concerts because I can still hear it  :bow: .  The pigs heard it but ignored it anyway - would push under whilst squealing but decline to come back :pig: .  The sheep hear it too, but their behaviour is different - they will still jump 'over' as if the fence is still there even after it has been removed, but they will push through when the fence is still there but off. :sheep:
Title: Re: Does it hum?
Post by: suziequeue on August 28, 2012, 01:59:23 pm
Somebody shared on here once that they noticed one pig pushing another pig towards the fence to test if it was on  ;D ;D
Title: Re: Does it hum?
Post by: Fleecewife on August 28, 2012, 02:21:21 pm
Somebody shared on here once that they noticed one pig pushing another pig towards the fence to test if it was on  ;D ;D
:roflanim:  Too bright to be food animals  :pig:
Title: Re: Does it hum?
Post by: robert waddell on August 28, 2012, 02:26:17 pm
the energiser clicks     the wire should be silent unless it is earthing out and depends on the power it will crack or just a light tick
 
now the old fashioned telephone wires  they used to sing in the breeze :farmer:
Title: Re: Does it hum?
Post by: Fleecewife on August 28, 2012, 02:33:46 pm
When it's not earthing out you can still hear the wire, too far from the energiser to be mistaking it for that (and much quieter than the click of earthing out).  Then don't forget that prey animals will have better hearing than we do - although we are prey animals too to big cats  :cat: :cat:  - so they will hear it more clearly than we do.
Title: Re: Does it hum?
Post by: Foobar on August 28, 2012, 03:03:30 pm
Anything having a current passed along it will have an electromagnetic field around it, and I suspect the animals can sense that.
I don't know if we are sensitive enough to feel it, maybe try putting a bit of your skin near it and see what you can feel ... ;) ... an index finger tip would be ideal ...

Also wet things (like noses) conduct better, and the electric charge will leap across a small gap between the wire and a nose.
Title: Re: Does it hum?
Post by: robert waddell on August 28, 2012, 03:16:14 pm
sorry fleecewife your fence is just not right if you can hear it sometimes moist algae  will have the current tracking  that is a very low sounding tick  snails are a favourite for frying and earthing it out
 
DO NOT TRY FOOBARS  ELECTRIC FENCE TEST you will get a shock   that is like testing a car plug lead with your finger or tongue  but try it and report back  i try not to get to near it when it is on :roflanim: :farmer:
Title: Re: Does it hum?
Post by: Foobar on August 28, 2012, 03:35:42 pm
Yes, to be clear, I was joking.  Don't try it, unless you like pain  ;D .
Title: Re: Does it hum?
Post by: robert waddell on August 28, 2012, 04:06:03 pm
incidentally they recon that any  animal or human will only last about 20 minutes until the heart gives out :farmer:
Title: Re: Does it hum?
Post by: Fleecewife on August 28, 2012, 04:40:20 pm
sorry fleecewife your fence is just not right if you can hear it sometimes moist algae  will have the current tracking  that is a very low sounding tick  snails are a favourite for frying and earthing it out
 

My hearing is just better than yours Robert  :innocent: :stir:   :D
Title: Re: Does it hum?
Post by: robert waddell on August 28, 2012, 05:35:20 pm
aye right :stir: away at it :roflanim:    what we do is disconect the leadout wire at the energiser switch it on listen to the  the volume of the tick and touch the lead out wire on the terminal if it is earthing out the volume is drawn down  if it is alright it will be the same volume :farmer:
Title: Re: Does it hum?
Post by: mab on August 28, 2012, 10:56:05 pm
If the energiser's within earshot of the sheep then they do make a whine noise between the clicks (at least mine does). I'm sure the pony knows when I've forgotten to turn it on.
Title: Re: Does it hum?
Post by: Small Farmer on August 29, 2012, 05:24:13 am
Our horse always knows when its off.
Title: Re: Does it hum?
Post by: plumseverywhere on August 29, 2012, 07:30:34 am
The goats definitely know when its off!  YOu can literally see them bristle and step back when I plug it back in after milking time! And that's when the 'clicks' are not audible to me.  Cooking slug tends to make it click really loud, most mornings I have to scrape exploded sluggies off the tree where they've got caught in the fencing, yuk.


I believe the fox can tell when its on too.  Shame my vet couldnt', he got a ping on the nose  ::)
Title: Re: Does it hum?
Post by: Bumblebear on August 31, 2012, 01:23:02 pm
Shame my vet couldnt', he got a ping on the nose  ::)

 :roflanim: :roflanim: :roflanim: