Dust bathing chickens

Chicken dust bath

Chickens have an odd
habit of bathing in the dirt.  They find a dry spot with a lot of
loose soil and then scratch and flap their wings until their whole
bodies are coated with a layer of dust.

Even though the idea seems counterintuitive to us, dust baths actually
make a lot of sense in the chicken world.  Parasites (mites and
lice) can build up on a chicken’s body to the point where the birds get
sick or even die, but a few minutes scratching in dry soil on a regular
basis clogs the parasites’ pores and causes them to suffocate.  I
read a lot about red mites on other chicken keepers’ blogs, but our
chickens never seem to develop a problem, presumably because of their
frequent dust baths.


Dust bathing chicken

Unless your chickens are
closely confined, chances are they’ll make a dust bath for
themselves.  A patch of bare dirt combined with enough sunny days
to dry off the surface is all it takes.




Some chicken owners go a
step further, though, creating a dust bath box inside their chickens’
coop.  That way, the flock will have a spot to dust bathe even if
the weather is too cold or wet to allow outside bathing.  You can
fill a planter, plastic storage bin, or wooden box with about six
inches of soil, optionally adding in sand, diatomaceous earth, or wood
ashes for even better results.  You can mix all of these
ingredients into an outside dust bath too, but wood ashes will have to
be replenished after every rain.




My final word of wisdom
on chicken dust baths is — don’t think your chicken’s dead if you
find her in an odd pose out in her pasture.  I have to admit that
I’ve been taken in by the post-flutter sunning period multiple
times.  That chicken lying on her side with her legs and wings
stretched out just doesn’t look alive…but she is.



Clean water is also key to
chicken health.  Our
chicken waterer is always POOP-free.

Pay the least when you process broilers young

Australorp PulletsFirst of all, I have to admit
that I was a bit over-optimistic with my previous assessment of our
Black
Australorp broilers’ feed conversion rate
.  It only became
apparent a week after writing that post that ten of our thirteen
broilers were girls!  Since pullets are slower growing than
cockerels, I reanalyzed my data, taking the girls’ lower feed
consumption into account, and got a
feed
conversion rate of 5
instead of 4.5 at 11.7
weeks.  This ratio is still excellent compared to anything except
Cornish Cross, so I’m not second-guessing our flock’s foraging
abilities.




On the other hand, I was
disappointed to see that feed conversion rate increased markedly as I
Feed to meat ratio for chickens over timeslaughtered the rest of the
broilers over the next two and a half weeks.  For those of you
stumbling over the ratio, that means
I paid
more in feed costs for each ounce the chickens put on as they aged
.  Isn’t it interesting
how the Dark Cornish broilers from last year seemed to become less
efficient at the same rate as this year’s australorps, just ate more in
general?  Both types of chickens were probably on the downward
curve of the
chicken
growth rate graph

— no growth spurts going on here.




I plan to process the
rest of our broilers right at 12 weeks for the sake of economics, but
there are a few factors that might make you inclined to wait
longer.  Some sources report that older chickens impart a more
complex flavor to soup if you age the birds for up to five days in the
fridge then cook with moist heat (submerged in water or in a lidded
roaster with water in the bottom) at no more than 325 degrees
Fahrenheit or at a light simmer.  You might also choose to
slaughter your birds when they’re older if you spent a lot on
purchasing and brooding your chicks and want a bigger return on your
investment.  Finally, if you’re raising just a few chickens at a
time on a diversified homestead, you might be feeding the chickens
little or nothing in storebought feed, in which case every ounce the
birds put on is free.



Healthy
chickens grow faster.  Our chicken
waterer
gets chicks off to a great start.

Chicken growth rate

Chickens roostingWe
keep a close eye on our flock, and I’ve started noticing that chickens
don’t hatch from the egg and grow steadily until they reach full
size.  Instead, just like humans, they go through a series of
growth spurts.




My obsessive
note-keeping on feed
conversion rates
as we
slaughtered our broilers confirmed my observation.  Just like last
year, I got the best feed to meat ratio from birds just shy of or right
at 12 weeks.  As our pullets and cockerels reached the end of
their third month of life, they were growing so fast that I felt like I
could see a difference in size every day.  Just a week later,
though, the chickens hadn’t grown at all, which set my feed to meat
ratio plummeting.  No wonder heritage breed broilers were
traditionally slaughtered at or before 12 weeks — that’s simply the
economical way to raise them.



Chicken growth rate

After extensive internet
searching, I compiled the data above, showing
the growth rate of various breeds of chickens over time.  Cornish
Cross, of course, is the primary commercial broiler breed, Paraiso
Padres is a Brazilian broiler, and ISA is a commercial brown egg layer.




Chicken tractorWhat I found interesting about
the chart is that you see the growth
curve peak at 6 to 10 weeks for each type of chicken.  This is why
the big chicken farmers kill their broilers at 6 weeks — their
chickens have reached the peak of their growing curve and will probably
start eating more feed for each pound they put on in the future. 
Of course, with heritage breeds (and especially if growing layers for
meat), you have to weigh the con of lower feed to meat conversion rate
with the pro of a heavier bird that’s more worth your while to
slaughter and dress.




What I don’t know is
when (or if) further growth spurts occur, and
whether if we waited until the traditional fryer age (14 to 20 weeks),
grain conversion efficiency would rebound.  I suspect that people
grew chickens to the fryer stage not for efficiency, but to allow the
characteristics of individual birds to become clearer so that they
could cull  those they were less interested in from the flock, but
perhaps chickens go through another growth spurt?



Our chicken waterer makes raising broilers a
breeze, cutting daily chore time in half.