Feeding Pre-Killed vs. Live Prey
BOA CONSTRICTOR

The following boa care information is intended to be a general, down to earth  approach to some things we can do to properly maintain our boa constrictors. There are many, many other publications that detail this topic to the point of confusion. Yet I believe it is the most critical choice we make as boa constrictor owners.

OBJECTIVES

To help improve the life and safety of our boa constrictors

1.Convert to feeding Pre-killed rodents as opposed to Live Prey.
2. Convert to Feeding Frozen/Thawed Rodents.

3.Convert to Feeding Rats Only.

"Deader is Better"

Feeding Pre-Killed VS. Live Prey

The first thing we must understand is that almost every pet store, self help care book, and even most people in the herpetology trade, will tell you that snakes will only eat live prey. This is simply not true. Especially for our boas.  Colombian Red Tail Boa Constrictors are quite possibly the easiest snake to convert to eating pre-killed prey.  Even young neonates can be started on pre-killed prey.

Do not buy into the argument of "My boa needs live prey, because in his natural environment he must hunt, stalk, and attack his prey to survive. No one kills their prey for them in the wild" or "I could never kill a little mouse, they are too cute"

Sounds like a science fiction book.  Captivity, and captive bred, captive born, are light-years away from their "natural" environment.  They are part of an environment that we create, provide, and maintain.  We ARE their food source.  We should do what is BEST for them! We should provide their exercise and stimulation by handling them, and letting them climb around. Not searching and destroying prey that will eventually turn on them and damage or kill them.

Here are the advantages of feeding Pre-Killed Prey.

Pre-killed prey will not be able to scratch or bite our boasThe greatest danger feeding live prey to our boas, is the damage that can be done by the rodent!  Serious bites and scratches from rodents could even lead to blindness, deep gashes and even death.  Some have left live prey in the enclosures overnight to find later that the rodent has chewed deep gashes into the boa in several places. Rats will not cower in the corner waiting to be eaten. Below are pictures of damage done by rats when  "Dinner becomes the Diner"
Pre-killed prey makes offering and removing the food item easier.   The pre-killed rodent can be placed in the enclosure and left for a while, even overnight, without danger to the boa.  If the item is not eaten by morning, then it can be removed safely.
Pre-killed prey makes our boas more docile and less aggressive. Over time a strict diet of pre-killed rodents will make our boas less aggressive because they will learn the prey will be placed with them and all they have to do is eat.  I have 7 foot females that simply approach the item, slowly grab it with their mouth and start to swallow.  No striking, no constricting, just eating.  I also have yearlings that will still grab and constrict the prey anyway, but they will eventually become the same way as the adults.  This becomes a feeding conditioning tool.
Feeding Pre-killed ensures that our boas are actually hungry when they eat.  Most snakes will not eat if they are not hungry. BUT you dance around a live prey item and they will most likely feed anyway.  I see boas all the time refuse food items because they are not hungry.
  It also minimizes the suffering of the rodent.  Some people really struggle watching the rodents being constricted.  Pre-killed prey becomes easier to feed for these people.
Humanely Killing Live Prey

Humanely Killing Live Prey can be simple or well designed. If you continue to buy live prey and want to kill the prey before you feed, then here are a couple of ways to accomplish this.

Grab the rodent by the tail and with a quick motion, swing the rodent and strike its head on a hard surface. Then the rodent can be fed immediately while it is still very warm.
Another way is to create a CO2 gas tank and place the rodents inside. They are immediately rendered unconscious and  killed within a few minutes.  There are many publications on the web that cover all kinds of ways to make your own CO2 chamber.  You can simply use dry ice in a Styrofoam box to do the same thing.
 

How to convert to a pre-killed feeder.  ****  Very important topic ****

Converting a live feeder to a pre-killed feeder. The hardest part is convincing yourself.  The boa WILL come along.  If not immediately, it will very soon. Here are some ways to convert your boa.

If your boa is in good health, you should offer only pre-killed for several weeks, at different times of the day/night. Remember it is important to realize that it will not hurt a boa to miss a meal every once in a while.  It is too easy to "give-in" and feed the boa a live rodent to quickly.  This only sets you back in your ultimate goal to convert the boa.

1) Try rodents of different sizes/colors etc. Sometimes it is as simple as a different size or color. Make sure the rodent is warm.  Soak the rodent in very warm water just prior to feeding. This is the biggest mistake that I find. Soak the rodent in very warm water just prior to feeding. Generally this strong smell developed by "heating" the rodent is all they need to eat.

2) Using long tongs or hemostats and shake the pre-killed rodent in front of the boa, this is often all that is needed to get the boa to feed. 

3) Use the hide box method.  Let your boa get inside some hideaway and remain there for a while.  Then using the tongs, wiggle the warm, thawed rodent in the entrance to the hideaway.  Sometimes this is just too tempting to the boa, and they will often eat this way.

4) Leave the thawed rodent in overnight. A picky eater may wait a long time to eat even though it is "aware" of the rodent.  Leaving this at night, with lights out, is often the time boas are active and this may be the time the boa will eat.

5) One of the last methods to try is to feed a small live prey item and follow it immediately with a pre-killed item.  This has been know to work for many people.  Next time start over with pre-killed only.

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Frozen Thawed
Why frozen/thawed rodents?

The next biggest step you can take is to convert from Pre-killed to frozen/thawed rodents. These rodents are frozen solid for storage, usually in vacuum packed, sealed containers, then fully thawed at the time of feeding. Frozen/Thawed rodents are the best solution for boa owners. They come in all Sizes.

1) Freezing the rodents kills any parasites, internal and external.    "DEADER IS BETTER"

2) Frozen rodents are readily available to you at any time you wish to feed.

3) Vacuum packed containers allow long storage times in your freezer. 6 months to 1 year or longer.

4) Prices are MUCH less expensive than purchasing live rodents at pet stores
. Many shippers are available that ship overnight. Even with this shipping cost, they are much cheaper.  Especially when you are talking about rats.

How do I feed frozen/thawed?

These rodents must be completely
Defrosted You should NEVER attempt to feed the prey while it is frozen! You must thaw it thoroughly and warm it to at least room temperature before feeding it.

I use a Rubbermaid type container large enough to hold the number of rodents I will be feeding.  Here is how I feed frozen / thawed rodents.


Fill the rubbermaid container with regular cold tap water.  Place the rodents in the container.  Let stand for an hour.  This hour is based on many rodents.  One to just a few, may not require as much time.  I do not thaw the rodents fast.  If you are feeding "pinkies" or "fuzzies", thawing fast will cause them to burst open during feeding. But, if you thaw slowly, as describe here, you should not have a problem.

After an hour, I will run warm water until the entire container is filled with warm water. Let stand for 15 minutes.

Finally, I run almost hot water into the container, just prior to feeding. This hot water added to the warm water will heat the rodents to a feeding temperature. They MUST be above room temperature. This also makes the rodents "smell" stronger to the boas.

The rodents should be drip dried, not towel dried. This extra moisture will aid the boas.

Feed the rodents using tongs or hemostats. Never use your hand to feed.  Remember your hand may be "warmer" that the rodent.  The boa will smell the prey, but possibly sense your hand with more heat.

Note: Some people will place the frozen prey in the refrigerator to slowly thaw.  Other people leave out on newspaper overnight.  Other will use defrost settings on the microwave. There are many methods, I have just shared what works very well for me.


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Oh Rats! Rats! Rats!

Why feed rats only?

From talking to several different people and breeders, I strongly believe that rats are the best food source for our boas. Mice are far more likely to be regurgitated, especially in younger boas. Some think it is because of the amount of hair on mice. As well as mice really don't have very much meat on their bodies and a low bone density.

Rats have a higher bone density and that seems to be the primary reason for the additional nutritional value. This document from the U.S. Department of Agriculture's National Agricultural Library details the nutritional value of all feeders, and links to almost every feeder supplier out there. This link will download the PDF version of the article from their website.

Nutrient Composition of Whole Vertebrate Prey - USDA official website

Nutrient Composition of Whole Vertebrate Prey - Alternate download website

As boa constrictor owners, we will eventually have to feed rats anyway, just because of the size of adult boas.  It is tougher to convert a snake from mice to rats as they get older.  We should start as young as possible to switch our boas to rats. Start out feeding your boas "pinkie" rats, or "Fuzzy" rats. Your boa will never miss anything if you do!

I feed frozen/thawed rats exclusively, as does my friend Jeff Ronne of www.theboaphile.com fame, and many, many others. The picture comparison photos are also compliments of Jeff Ronne.

Here is a comparison chart that helps you determine what size rat you should feed you boa constrictor
MICE:   RATS:
Pinkie/Fuzzy Mice Pinkie Rat (Newborn)
Hopper Mice Pinkie Rat (2 Week old)
Small Mice Fuzzy Rat
Medium Mice Rat Pup
Adult Mice Weanling Rat
Pinkie Size Fuzzy Size Weanling Size Small Size
 
Medium Size Large Size Jumbo Size  

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This concludes the Boa Constrictor Care Guide. I would appreciate any comments, suggestions, corrections, etc etc.

Please let me know how I can make this care guide STAY the ULTIMATE Solution Guide..

Copyright 1998-2007- Clay English - www.redtailboas.com - cenglish@redtailboas.com

Other Resources

I also recommend the following books for extended reading.                  

The Boa Constrictor Manual Philippe de Vosjoli / Jeff Ronne Herpetocultural library
Boas, A Complete Pet Owners Manual Doug Wagner Barron's
The Guide to Owning a Red-Tailed Boa Glen Drewnowski TFH Publications

 

 

 

 

Copyright 1998-2007 Clay English RedTailBoas.com All rights reserved.