Christina Websell wrote:
> "Jill" <mail@[EMAIL PROTECTED]
> wrote in message
> news:689bh0F2s56mbU1@[EMAIL PROTECTED]
>>>>
>>
>> Your view and experience is in a small number of birds and breeds. No
>> criticism, but only useful for your birds.
>>
>> What was written above is not my "view" but well researched science
>> in productive strains of pure breeds, where it was observed long
>> before the hybrids were created.
>>
>> My warning was to others who have strong productive pure breeds, or
>> hybrids, for whom an extra third of wheat in their diet is clinically
>> proven to be a bad thing to do.
>>
>> I respect your choice to provide the husbandry you choose for your
>> own birds.
>>
> so did all chickens die early in life before layers pellets were
> invented as the "complete food" then? I don't think they did.
>
> Tina
Compound feeds have been around for a long time, a very long time. They
used
high meat protein feeds until very recent years.
High productivity is associated with lower tolerance to high wheat and
associated feeds.
Increased straights in the diet is associated with reduced intake of
essential vtis, mins, proteins, and micronutrients.
High productivity is a relative thing in different breeds.
As increased productivity was demanded of the high achieving pure breeds
in
the middle part of last century mortality increased to an uneconomic level
and health problems abounded. Hence the creation of the modern hybrid.
Until Man really started to concentrate on chickens as a highly cost
effective source of cheap protein then the productivity was not so much of
an issue.
--
regards
Jill Bowis
Domestic Poultry and Waterfowl Solutions
Herbaceous; Herb and Alpine Nursery
Seasonal Farm Food
http://www.kintaline.co.uk
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