Re: vaccines

From: Krys Francis (krys_at_lluestfarmpoultry.co.uk)
Date: 06/13/04 

Date: Sun, 13 Jun 2004 21:38:14 +0100

In message <Ec%yc.111$3_6.57@newsfe3-win.server.ntli.net>, Just Molly
<oldmollyREMOVETHIS@tesco.net> writes
>
>"Krys Francis" <krys@lluestfarmpoultry.co.uk> wrote in message
>news:6Oi9Y9I9rFzARw8b@clef.demon.co.uk...
>> In message <neWyc.63$jj2.9@newsfe1-win>, Just Molly
>> <oldmollyREMOVETHIS@tesco.net> writes
>> >
>> >"Jill" <news@REMOVETHISkintaline.co.uk> wrote in message
>> >news:1087074774.9856.1@nnrp-t71-01.news.uk.clara.net...
>> >>
>> >> Do you know you already have it on your property ?
>> >> If you do not why do you want to ?
>> >> Is there a high incidence of it in the area - as in the places that
>your
>> >> youngsters might be going on to?
>> >>
>> >> --
>> > I don't already have it thank goodness but I want to be a responsible
>> >breeder and protect my stock wherever they might be going. For the
>> >relatively small cost of innoculating I will have the satisfaction of
>being
>> >aware that none of them will ever catch it and die. So really I'm not
>doing
>> >it for myself but for the bird and future owners.
>>
>> Most people who vaccinate will tell you that the vaccine isn't 100%.
>> Even the manufacturers write this. Here's a quote from data sheets for a
>> marek's vaccine:
>> "Under certain conditions, for example extreme disease pressure &
>> variant challenge, fully immune birds may succumb to the disease.
>> Therefore successfully vaccination may not be synonymous with full
>> protection in the face of a disease challenge."
>> Vaccinated birds can carry the field virus if they've come into contact
>> with it & be infectious to non vaccinated stock. Most Marek's vaccines
>> seem to be made from the turkey herpes virus, either live or attenuated,
>> raising with turkey poults to gain immunity could be another option?
>>
> There a re many poultry units in this area and I would *hate* to lose birds
>through mareks. I have been selling eggs all over the country so have no
>idea where they will end up. I don't intend to breed turkeys. I am happy ust
>keeping 'Joseph' my 10 year old tame pet norfolk bronze :0)

Well I can't say that you won't lose birds to Marek's even if you
vaccinate. But the numbers lost would be considerably lower in
vaccinated flocks than you they would be from an unvaccinated & non
resistant flock. Some breeds, such as seabrights & silkies are said to
be particularly susceptible to Marek's, others are resistant such as
Fayoumis. Don't mind me, I've just got a thing about breeding for
resistance to this & that :-) Not sure what eggs have to do with it
because Marek's can't be passed through eggs or on their shells. Have
you got your injection gun ready? I know a chap down your way who
vaccinates his birds. He does three weeks' hatchings of birds at the
same time to save wastage (& money). The vaccine's about £10 for 1000
doses.
>
> 

-- 
Krys Francis