Our Jumbo Cornish X Rock (Cornish Cross) is the most remarkable meat-producing chicken we offer. The Cornish Cross Rock is a hybrid developed by crossing the commercial Cornish chicken with a White Rock chicken.
Our special matings produce baby chicks with broad breasts, big thighs, white plumage, and yellow skin. These broiler chickens are known for their remarkable, rapid growth and feed efficiency. Whether you are looking to raise these top-selling meat birds for your own pleasure, or to raise and sell, you won't find better.
Females will have a fine, smooth finish when dressed and reach beautiful roasting size. Buying straight run chicks gives you some of each sex so that you can take advantage of the strong points both ways. Males will dress from three to four pounds in six to eight weeks, and females will take about one and a half weeks longer to reach the same size.
We think our Jumbo Cornish X Rocks are among the finest meat birds in America — we fill our own family freezers with them every year!
Not recommended for raising at altitudes above 5,000 feet.
Jumbo Cornish X Rocks are hybrids, therefore we do not recommend breeding. They will not produce the same high quality in the next generation and due to the extreme rate of growth they will be too large at time of sexual maturity to breed successfully.
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QUICK STATS
Type:
standard
Class:
Production
Heritage Breed:
no
Rare Breed / TLC Conservation Priority:
none
Egg Color:
n/a
Disposition:
good
Free Range:
poor
Heat Tolerance:
poor
Cold Tolerance:
excellent
Comb Type:
single
Leg Style:
clean
Leg Color:
yellow
Skin Color:
yellow
Bird Size:
jumbo
Meat Production:
best
Weeks to Maturity:
8
Male Mature Weight:
7.5 lbs
Female Mature Weight:
5.5 lbs
AVAILABILITY
This breed may be available for future dates.
The table below shows availability for the next several weeks.Click here to show all hatch dates for this season.
Please note you will select a ship date during the checkout process.
Q&A
What strain are your Jumbo Cornish Cross?
Our Jumbo Cornish X Rocks are a commercially bred strain. We do not make our own crosses. They have been developed by a number of different genetics companies and selected for their fast growth and bulk of meat they produce.
Why is this breed not recommended for altitudes above 5000 feet
Heart issue?
Yes they can have a heart attack and it makes it harder from the to breathe also.
What is the feed conversion rate, roughly?
For each pound the Jumbo Cornish X Rock dresses out at, it takes 2-3 lbs of feed, per bird.
what breeds do I need in order to breed the jumbo cornish x rock?
The Jumbo Cornish X Rock is a commercially bred strain. We do not make our own crosses. They have been developed by a number of different genetics companies. They have been selected for their fast growth and bulk of meat they produce.
can i raise these birds to breed & what problems might i have
Jumbo Cornish X Rocks are hybrids designed as rapid growing meat birds. They should be butchered by 10 weeks of age.
Due to their rapid weight gain/growth, resulting in stress on their hearts if not processed by 10 weeks of age, may cause them to die from heart attack.
Jumbo Cornish X Rocks are not designed for reproduction or egg laying.
What does straight run mean?
Straight run means "unsexed" or as hatched. We have no indications of knowing if the chicks are males or females.
Is it necessary to caponize the males or is it possible to just finish and process them the same as the females?
They do NOT need to be caponized. This breed grows very quickly already.
when i get the chicks how do i feed them grit?
Either sprinkle it on top of their feed, or offer a separate container with grit so they can get what is needed.
For meat birds/butchering, do I just buy straight run? Any difference between sex and final outcome? Thank you...
Male meat chickens mature faster than females. If ordering a straight run, and you butcher all the birds at the same time, then you will have various sizes of meat chickens. There is no difference in the meat quality between the sexes.
What size pen do you need to house 25 chickens?
They need to have at least 3 square feet per bird.
Is there a minimum that you have to purchase of this breed?
No, but the minimum order for chicks is 25. You can mix the different breeds to reach the minimum.
If buying males do you have to canonize them ?How does this affect the quality and taste?
No. This breed grows very fast on their own. We do not recommend caponizing as it can be extremely stressful on the bird. This breed has been developed to be the best meat, largest amount of meat and shortest growth time.
What do you feed the Cornish X Rocks?
We recommend Broiler starter feed until week 3, then Broiler Grower/Finisher feed after week 3 until butcher.
How many weeks till butcher on jumbo and Cornish rock
It is suggested 6-8 weeks for Jumbo Cornish X Rocks.
What is your latest hatch this summer, 2015? We need to order as late as possible. Thanks!
The chicks are shipping every week through the end of October.
what is a good live weight to butcher at to get a 4 to 5lb dressed bird
If you take a 5# bird live weight you should aprox get a dressed out bird of 3.5 lbs.
May 16 thru may 18 is our hatch date for our fair for meat chickens. Do u have them available for that day?
Yes, they would hatch and ship on 5/16 for arrival between 5/17 and 5/19.
do they need a special diet to grow properly?
We recommend on the CXR you start them on a 20-23% Broiler starter, after 5 weeks switch them to a 18-20% grower finisher. We also suggest taking their food away at night starting at 10 days of age. This can cut down on any potential leg problems.
What is better for eating, males or females?
How many would you suggest for our first time raising meat chickens?
There isn't much difference between males and female other than the females take a little longer to reach butcher weight. They will taste the same. Most of our first time meat raisers will start with 15 to 25 chicks.
Big BirdsThis was my first time in the meat bird game. I ordered 50 straight run chicks and got 54. I wish the tracking number would have told me when they were going to arrive, but that's the USPS for you. Birds were healthy on arrival. They were shown water and given grow gel on top of their feed. These birds did go little too long and that was my fault. I processed 35 in the end. I did notice that I lost less birds after I took them off the broiler booster water supplement and gave them straight water. Big learning curve for me. I would not hesitate to order these birds again from McMuuray.
Customer
unhappy customerI've raised the cornish x for years. first time ordering from this company. i got 35 cornish chicks and 5 weeks in they aren't any bigger than the layers I purchased at the same time. in fact a few are even smaller than the others. definitely won't be ready to butcher in 6 - 8 weeks. never again from this company.
Mix & match for 6 chick minimum order. Learn More
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