From:
"xxxxxxx"
Date: 2007-12-18 15:17:27 UTC
Subject: [ferrethealth] Re: Question on timing of light cycle
To: ferrethealth@yahoogroups.com
This reminds me of calcium in flying squirrels. When in the wild they
live only a short span of a few years due to not getting sunlight and
not getting certain vitamins.
In captivity when supplied with the correct calcium/phosphorus ratio
and other vitamins, they live approximately 15 years.
xxxxxxx
--- In ferrethealth@yahoogroups.com, "Sukie Crandall" <sukie@...> wrote:
>
> GREAT set of questions! If memory serves, I have heard in
> the past from Dr. Tom Willard, whose doctorate is in
> veterinary nutrition, esp. of members of Carnivora that the
> need for D in ferret diets is thought to be lower than for
> humans just as it is lower for dogs. In fact, dogs can get
> a form of hypercalcemia from too much D in their diets, and
> they are longer adjusted to living w humans -- not that this
> necessarily means a lot for ferrets since rates of selection
> pressures and more natural forms of evolution can vary
> among species (and it is postulated even within sequential
> species in one line over time, including a recent study on
> rates of change in the human lineage. Still, it leaves the door
> open on if there is such a thing as too much D for ferrets, just
> as for us humans there can be too much A (which appears to
> be substantially less of a concern for ferrets.
>
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