FAF: Why is Alpaca Fiber So Warm?

Hello Fiber Arts Friday Fans!  It’s been a while since I’ve done a science behind alpaca fiber so here we go.  Today’s question, why is alpaca warmer than wool?

What is Alpaca Fiber?

Well all know that fiber from a sheep is called wool and the stuff that we wash and comb on our own heads is called hair but what is alpaca?  The argument can be made that alpaca fiber is really a hair but is often referred to as wool but for the majority of breeders we refer to it as, fiber.

The fiber that is sheared from the alpaca is produced by primary and secondary hair follicles and even a derived secondary which grows in both the primary and secondary follicles.

Primary fibers are what we call guard hair and are straight and stiff often giving that prickly sensation next to the skin. These fibers are most present on the legs and brisket of the alpaca and sometimes can be seen as a halo above the finer secondary undercoat or are called “cria tips” on new born alpacas.

Secondary fiber is the soft undercoat that gives the alpaca a soft handle. Secondary fibers cluster around a primary follicle and are the fiber that creates the crimp.  Note: You cannot have secondary or derived secondary fibers without a primary fiber, therefore breeding to eliminate primary fiber results in a low density high micron fleece. Surprisingly, as fiber density increases the diameter of primary fibers decreases as it is forced to share skin real estate with secondary and derived secondary fibers.

Derived Secondary fibers are the finest of the 3 types and are what breeders strive for.  A derived secondary follicle has its own root structure but share the same exit point from the skin of a secondary fiber.  This type of fiber can only be identified through a skin biopsy.

Alpaca Fiber Structure:

Alpaca fiber is made up of 3 different parts, Cortical Cells, Cuticle, Intercellular Binder.

Cortical Cells – These are the body builders of the fiber and give it strength along with creating the crimp that we love so much.  What causes crimp? Cortical Cells are made up of 2 parts, the orthocortex and paracortex.  These 2 parts twist around each other creating the crimp in Huacaya or the twist in a suri.  This crimp causes the actual fiber length to be 10%-30% longer than the staple length.  Unfortunately crimp is not a reliable when determining fineness.

Cuticle – to protect the cells each fiber is covered in a material that we often refer to as scale.  This protective coating is what provides the fiber its strength and also makes the fiber smooth to the touch.  This is what we feel when we check for handle in a fleece as we rub the fibers between our fingers.  The scale is also reflective and produces luster.

Intercellular Binder – It’s the glue that holds the 2 cell parts together within the cuticle.

Findings:

Alpaca owners who have been telling others this fess up,  “alpaca fiber is warm because it is hollow and traps air for extra insulation.” I heard this from several breeders and never really questioned it until now.

The only medullated (hollow) hair fibers are the thick prickly guard hair which none of us wants in our fiber.  So what causes alpaca’s superior warmth? The simple answer fineness and density.  Alpaca fiber is finer, allowing more hairs to occupy the same space, more fiber = more trapped air = warmer.

Example Wool vs Alpaca

Let’s take a typical worsted weight yarn.  The memory of wool causes the yarn to look fluffy and springy and less fibers are needed to occupy the space for a worsted weight yarn.  The alpaca yarn does not have memory, is finer and requires many times more strands of fiber to occupy the same space needed to make a worsted weight yarn.  (I keep hearing it’s about 3x more but have not found research to back this yet).

Because dense fine alpaca fiber weigh less than wool, lighter weight yarns and garments can be made from alpaca that have the same or superior insulating properties to thicker wool garments.

UPDATE 8/13/11: According to the Yocom-McColl Wool Testing Labs alpaca fiber is NOT medullated (hollow) but most fibers DO have a trapped air bubble within the fiber!  Check it out! The dark bubble in the center of the fiber is trapped air.

Alpaca fiber with air bubble
Wool Fiber from Sheep

Thank you and this concludes today’s Fiber Arts Science Friday 🙂 Be sure to check out the link-parties page!

References:
Elite Alpaca Breeding Systems 
SRS Alpacas International

Understanding Cost to Sell Alpaca Fiber at a Profit

AlpacasWhether you’re thinking starting an alpaca farm or are a seasoned rancher the question is always the same.  What do you do with all that fleece?!  I’m surprised to find that many folks shear it, bag it, and store it without doing anything at all.  (FYI Fiber does have a shelf life).

Since many folks frown upon eating alpacas the only ways to cover your cost of ownership of these animals is to sell fiber, products or breeding stock.  Yes, you CAN make your alpacas pay for themselves with fleece sales but only if you manage your farm properly.

Alpaca ownership is first and foremost a business. As with any business you have to realize what your costs are and work on lowing them to realize a profit.  Here are the key factors:

  1. Location: Alpacas eat grass which for the most part is free! That is unless you live in an arid climate then you have to spend $$$ on hay.  Money spent on hay is money out of our pocket.  My alpacas are grass fed 6-8 months out of the year. Yippy, FREE food!
  2. Feed: There’s no substitute for good pasture management.  A good pasture with quality forage is everything that an alpaca needs to thrive.  I do not grain my alpacas unless I have a pregnant dam that is skinny and needs help maintaining weight.  For 6-8 months out of a year I am able to “feed free” so to speak on quality pasture alone.
  3. Supplements: Since the pasture is supplying all of the feed it is important to know what vitamins and minerals you may be lacking.  Soil samples will help you decide what to supplement. We are low in selenium in my neck of the woods and I’ve opted to offer free choice Dumor Sheep Mineral to all of our alpacas since it contains the minerals I need at a very affordable cost.
  4. Water: Offering quality fresh clean water to drink is another key.  Keep your animals hydrated especially in the winter.  Heated buckets in winter are a MUST.  Hay is dry and alpacas need water to help the digestion process. Alpacas will not drink enough water if it is frozen or ice cold. The cost of running a heated bucket is minimal to what a vet visit will cost you should they colic or become anemic.
  5. Worming ,Vaccinations, General Health: You can save $ by giving shots yourself but in some states (like NY) only a veterinarian can give rabies shots.  Also learn how to clip toenails, trim teeth, run fecals, do blood draws, etc yourself. The more you empower yourself the less you pay your vet.
  6. Shearing: Finally, what does it cost you to get the fiber OFF the alpaca?

Calculating Cost per Pound and Ounce:

Most of us will sell fleece by the ounce or by the pound so when you’re figuring your costs you want to know what your costs are in terms of costs per ounce or costs per pound of fleece.  I narrow this down to what it costs to care for 1 alpaca per year.  That way when I weigh out the usable fleece I know what that alpaca costs me in terms of fleece weight!

Here are my 2010 and 2011 calculations for yearly cost per alpaca.  Last year I had a herd of 9 this year I’ll be up to 16.  In most cases the cost of care per head goes down with more animals you own.

2011 Projections (2010 in RED)

6 months Grass: $0
6 months Hay: $17.5 ($33)
Grain: $7.5 (same)
Minerals: $1.25 ($2.5)
Syringes: $2.5 ($3)
Wormer: $6.5 ($10)
Rabies: $2.25 ($21)
Heated Water: $1.25 ($2.20)
Summer Fans: $1.25 ($2.20)
Shearing: $5 ($30)
Teeth: $0.25 ($10)
Misc Vet: $10 (same)
———————————-
Total: $55.25 ($123.90)***

***This is the cost to care for 1 alpaca on our farm per year.  This does NOT include other factors of running a business like property tax, gas, hardware, equipment, travel, etc.  I include those factors in my Mark Up % when pricing products since I retail more than just alpaca fiber. Read More About Pricing Products Here

So what does 1 ounce or pound of fiber cost you?  Co-ops, commercial mills, and other companies that purchase your fiber will only want the best quality.  Outside of breeding for better fiber it is very important to handle it properly after shearing to maximize your yield.  Skirt the fleece removing all large vegetable mater, discolorations and guard hair.  Then bounce on table or tumble to remove small debris and dirt.  Dry your fleece in an open bag next to a dehumidifier for 24hrs before weighing.

This clean dry weight is your prime sellable fleece.  I’ll typically get 3 to 6 pounds of high quality fiber per alpaca.  For the purpose of this exercise let’s use the average of 4.5lbs. For comparison the average sheep will produce 7.5lbs of fiber but 40-50% of that weight is grease.

Prime Raw Fiber

4.5lbs = $55.25 ($123.90)
4.5lbs = 72 oz
Cost per oz = $0.77 ($1.72)
Cost per lb = $12.28 ($27.53)

As you can see small changes in your heard management practices can make a big difference in your bottom line. Here are the changes we are making to lower our costs from 2010 to 2011

6 months Hay: Moving from feeding small square bales to large rounds
Rabies: vaccinating whole herd vs only those that are traveling (required by NYS)
Shearing: Cost of me shearing vs hired shearer
Teeth: Cost of me trimming teeth vs hired shearer

Processing and Selling Your Fiber

Most people do not buy fiber from you in the “raw” state but are more apt to purchase fiber as roving or yarn so let us also look at those costs (less shipping).

Cost/lb at a NY mill (total with costs added from above)

Roving/Bat = $12.50 ($24.78 $40.03)
Pin Drafted = $15.50 ($27.78 $43.03)
Yarn = $26.75 ($39.03 $54.28)

Cost/oz at a NY Mill (total with costs added from above)

Roving/Bat = $0.78 ($1.55 $2.50)
Pin Drafted = $0.97 ($1.74 $2.68)
Yarn = $1.67 ($2.44 $3.39)

Fiber Pools and Co-ops

Another outlet for your fiber is to send it off to fiber pools or co-ops.  At these places your fiber is combined with those of other farms into large commercial runs for products like socks, hats, yarn, blankets etc. These pools and co-ops willthen allow you to purchase product back at or below processing costs and in some cases will pay dividends back to their member in profitable years.  Examples: NEAFP and AFCNA

Alpaca Blanket Project

This company started a few short years ago and has grown considerably.  They are now able to offer up to $5 per pound for your raw fleece.  Members can also purchase blankets back at a discounted rate.

Selling to Mills Directly

Many small cottage mills will purchase alpaca fiber directly but at a price/lb.

Large production commercial mills have also started purchasing alpaca fiber from North American ranchers but only beige or white fleeces.  I know alpacas come in 22 different colors but it is the light colored animals that will be called for in commercial production.  If you don’t believe me visit the herds in Peru some time…. All beige and white.

Scrap Fiber

All the calculations above are based on “commercial” prime quality fiber; fiber that you can sell to mills and manufacturers directly. However, a typical alpaca will yield 9-14 pounds of fiber over all so what to do with all the other fiber?  I consider sales of this fiber to be a bonus and there are MANY outlets for it, here are some of the things I do with my neck, leg, and belly fibers.

Rugs and Rug Yarn – Mills are now offering rug weaving and rug yarns.  Mix up a bag of skirted scraps (2” or longer) for a colorful rug yarn that can be woven, crochet or knit into soft bath mats or have the mill make the rugs for you.

Felt – Purses, bags, hats, coasters, rugs, pillows, dog beds, comforters, artwork and more.  Wet felting fabric yourself or having the mill do it for you can open up a whole new world of possibilities.  Be creative!

Stuffing – We all have the “garbage” bag where all the shorts and swept up scraps go to die. This too can be used.  Fill up suet feeders or chicken wire cage with fiber scraps as a nesting feeder for spring birds.  Wash and dry scraps to remove smell and use these unsavory pieces to stuff dog toys.  My dogs go NUTS for alpaca stuffed toys.

Conclusion:

As the inflated price of alpacas comes down to sustainable levels the majority of alpaca farms will soon be looking to cut costs and breed for fiber profitability.  With hard work, conservative planning, artistic ability, marketing and salesmanship; the cottage and commercial future of alpaca fiber will thrive.

Fiber Market Monday: Starter Herd

Welcome back to Fiber Market Mondays!

This is a forum to showcase anything made from natural animal fiber, raw fiber or even the fiber animals themselves!

Spring is here and with it comes Mother’s Day.  What better way to celebrate mother’s day than a mommy and me starter herd package?!   This package is a 3(2) package.   You’ll get proven dam Bella who is bred for a Fall 2011 cria as well as Fontina, her 2010 Female cria!  As an added bonus if you say you saw this ad on Fiber Market Monday I’ll even add in free breed backs for BOTH Bella and Fontina for a 5(2) package!

Fiber Market Monday

Do you craft with animal fiber, sell raw fleeces or fiber animals?
Share your links with us every Monday.
Etsy, OpenHerd, AlpacaNation, and private websites are OK!!!!!!!

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Fiber Arts Friday – Alpaca Fiber Tensile Strength

My fiber week was spent back to what I like doing the most.  Making ropes for mecate reins, leashes or lead ropes and of course my fiber of choice is alpaca.  But why?

When I got into raising alpacas everyone told me how much better alpaca fiber was for one reason or another and I wanted to do the research and find out if folks were just blowing smoke up my @$$ or not. It turns out there was hardly any research done and I only could find 1 article done by the Yocom-McColl Testing lab, Texas A&M and University of Wyoming entitled “Fiber Characteristics of US Huacaya Alpacas.”

I specifically wanted to learn about fiber strength.  I was not interested in crimp, color, diameter, or any other characteristic unless it directly affected the strength of the fiber.

First and foremost; how is strength calculated and what is is the minimum needed for today’s high speed mill industry?  Strength is calculated in Newtons/kilotex (N/ktex) and is the force measured in Newtons required to break a staple of given thickness measured in kilotex. Mother Earth exerts 9.8 Newtons(1kg x 9.8m/s2) and kilotex is the thickness in terms of mass per unit length (kg/km).

Today’s milling industry requires fiber with a minimum of 30N/ktex tensile strength for processing.

Wool

Wool fiber has a direct correlation between fiber diameter and staple strength.  So much so that Australia research actually has come up with a formula for breeders to follow to improve upon tensile strength.  They can use the CVD (Coefficient Variation Standard Deviation) from fiber reports to improve upon N/ktex.  Breeding for a CVD of 19% or lower creates a stronger wool fiber.  In other words, say your ewe’s mean micron count is 20, breeding to stay within 19% of 20 is ideal for fiber strength. Wool breeders aiming for this CVD, results in producing wool with 30-38 N/ktex.

Huacaya Alpaca Fiber

As it turns out alpaca fiber is extremely strong and has no correlation to color, fiber diameter, or length.  It is naturally strong fiber!  So much so that further studies on its strength aren’t even bothered with because 90% of fiber tested scored higher than the 30N/ktex required for the milling industry.  The mean tensile strength of alpaca is 50N/ktex.  The one study I found back in 1997 for Suri show’s their fiber strength to be 44.4N/ktex. I’m now hearing reports that Suri is stronger than Huacaya due to recent breeding practices but I have not been able to find recent research supporting this claim.

One thing when reading through this study that I did notice, is that alpaca fiber strength seems to increase dramatically with animals raised in the Great Lakes and Northeast regions.  I’m not sure if it’s the cold weather, snow, or forage that the alpaca fiber seems to like, but animals in these regions score and average of 56.25N/ktex.  Alpacas from the central, south and western regions scored an average of 47.26N/ktex.  Fiber Diameter does not appear to affect the strength at all over the regions.

  Great Lakes/North East Central, South and West % difference
Average Strength N/ktex 56.25 47.26 15.98%
Average Diameter µm 29.6 27.9 5.7 %

The study does show that alpaca is also nicer than most wools in that the longer the fiber length does not mean courser fiber.  In fact it tends to be reversed.  The longer the alpaca fiber the finer the micron count and again fiber strength does not appear to be an issue.  Long, fine, short or course alpaca scores above the required 30N/ktex every time. 

I hope I didn’t bore you too much and I guess to sum everything up; alpaca is STRONG!

So what have I been doing with my superior strength alpaca?  Making ropes of course.
here are some photos of the crazy process I go through to make the 6’ braided dog leashes pictured here.

alpaca cord rope making 
 
 
Shameless Plug… These 2 leashes are available for purchase!
FREE SHIPPING to any Fiber Arts Friday reader who would like to buy one.
Use coupon code:  FAF
 
Note these are big dog leashes… 5/8″ dimeter.  If you’d like a narrower leash I can make one custom for you.

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 I participate in….

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2010 Section 179 Alpaca Tax Incentive Con’t

Are you looking to get into alpacas but are still waiting for the “right time.”  Well the best time to buy is at the end of the calendar year!  Why? Thanks to the economic stimulus plan, the Section 179 tax incentive has been extended until 12/31/10!  Which means you can purchase your alpacas now and write them off in full the first year! 

No farm no problem!  Check out our post on Agsting alpacas vs owning your own farm.

Want to know what your immediate return on investment will be using Section 179?  Use this calculator.

We have great alpacas to start you out right.