Food & Nourishment -, Ruling on feeding dried blood to chickens.

What is the ruling on chickens if they are fed dried blood? A lot of
chickenfeed that chickenfarmers buy to fatten their chickens, both in
this country and abroad,contains dried blood, because in it there is a
kind of protein that helps chickens grow.
Praise be to Allaah.
With regard to feeding chickens or other animals that may be eaten
with impure substances (najasah) such as blood and the like, if it is
a small amount, that does not matter and it does not make them haraam
or make them jallaalah (animals that feed on filth and dung); rather
the jallaalah should be detained until it becomes pure and clean,if
most of its food is impure (najis).
But if only a small amount of the animal's food is impure (najis),
then it does not have any impact and it does not make the animal
haraam, so long as the ratio is 20% or 30% and so on. This does not
matter. Rather what makes it haraam is if the ratio is more than that
- 60% or 70%. If this is the ration, then the animal is regarded as
jallaalah, so it should be detained so that it can be given good and
pure food andwater. If it has been detained for a suitable number of
days, then it becomes pure and is halaal. This applies if theimpure
material is the majority of what it eats. The time for detaining
animals varies. Chickens should be detained for three days, and that
is enough for them to be fed good food and goodwater. Other animals,
such as sheep, cattle andthe like should be detained for longer
thanthat, such as seven days or more, so that they canbe given good
food and water, and their flesh becomes good (halaal) after that. We
have asked many of those who have knowledge of this matter, and they
said that what is fed to chickens of dried blood is a small amount in
comparison to other, pure food. End quote.
Shaykh 'Abd al-'Azeez ibn Baaz (may Allah havemercy on him).
Fataawa Noor 'ala al-Darb, 4/1934