How can chickens be fed in Hawai'i without importing feed from the mainland? There are a handful of possibilities, and they all require a lot more research. Normal chicken feed is chiefly grains - corn, wheat, oats, etc.. However, there are almost no grains grown in Hawai'i, for a a number of reasons which likely include climate, soil, and economics including land prices and labor costs. Nearly all the online resources for chicken feed (e.g. Chicken Feed Recipes) assume that grains, especially feed corn, are easily and cheaply available, which isn't at all true in Hawai'i.
A USDA project in 2003 concluded: "The production of economical high quality animal feeds like corn and alfalfa in Hawaii has proven to be very difficult. Although Hawaii can produce more tons of raw grasses per acre than anywhere else in the United States, the digestibility of these grasses is very poor." However, they're speaking of livestock like cattle, not chickens.
Grains
- Growing grains on a small scale, for example a single acre of wheat, probably doesn't make sense because the equipment needed (for example, threshing the wheat) doesn't scale down economically. Even after harvesting, most grain needs to be milled for chicken consumption, and that's another cost and complication. (see Hilo Feed Mill Research, below).
- Fortunately, chickens are quite omnivorous and can eat a wide assortment of foods besides grains. And there might be some grains that could, possibly, grow well here.
Corn
- Corn is the #1 grain in chicken feed. Only sweet corn for human consumption is grown in Hawai'i, and that is because consumers will pay a lot for it, which makes the economics of small scale corn farming work out. For feed corn, it is a different story. Once again, it probably requires mechanical harvesting and processing, in order to produce enough feed to be useful without a huge amount of labor.
- Nancy Redfeather writes about corn:
- "If you have land you can grow some fat flour corn like Inca Gold, After it dries in the field, if that's not possible, harvested when fully mature, husked and cobs dried in a protected place, then the corn just falls off the cob when it is fully dry....with a little twist of the hands. We ground corn into a meal with an old electric drill attached to our big corona grinder."
Wheat
- It's widely thought that wheat, like other grains, won't grow successfully in Hawai'i past one year, because of mold problems (in parts of the island that are wet enough to grow it.)
- As one UH researcher put it, "we always ended up with fungal problems with grain crops in our Hilo-Hamakua environment." When i asked where these studies can be found, he replied 'I will have to get in touch with some of the old timer agronomists like Dr. Ben Mahilum and Yusuf Tamimi about the grain trials that were done in the 1960s."
- There are stories that the island of Maui once grew large amounts of wheat in the 1800s - that it in fact supplied the wheat to San Francisco during the Gold Rush.
- By chance, in November 2007, i ran into a senior citizen in Hilo,
who told me the following:
- Part of his earlier careers included work for the Sugar company down in Na'alehu, where he was raised and lived. In the 1970s, he did many experiments for them, around South Point, to see what diversified crops might work. Cantaloupes and watermelons grew well, but the problem was people stole 'em. Wheat grew well, but only with rain. On 7 acres, wheat was a success. The following year, they tried wheat on 100 acres, which involved buying a very large amount of wheat seed from Texas. It started well, but then they had 6 months with almost no rain, and the wheat failed.
- From this story, it sounds like the issue with wheat (and similar grains) is irrigation vs. fungus - it would have to be grown on a 'saddle' area between wet and dry (north kohala, waimea, south point) and irrigated in case of drought.
Oats
- From a USDA table of 'Certified organic grain crop acreage, by State, 2005', it says there were 6 acres of corn and 6 acres of oats, in Hawai'i. Where are the oats?
- There are rumors that oats were grown successfully in the Laupahoehoe area, a hundred years ago.
Sorghum
-
A great potential chicken feed crop, possibly the most promising.
I have now put it all on the Sorghum page.
Amaranth
- A grain from South America, amaranth is known to grow well in Hawai'i, and have good nutrition. But, there are hundreds of varieties, across many species. Which might be best for growing in Hawai'i to feed chickens?
- Seeds of Change carries several: Burgundy, Golden Giant, Greek, Manna De Montana, Mercado. Trying to guess grain output is hard. Could just order them all and plant several test areas?
Grass
- By most accounts, chickens will consume as much as 30% of their calories from grass, if allowed to truly "free range." This can be accomplished with the (recently very popular) "chicken tractor" approach, or simply by giving your flock a very large area to roam. We have abundant grass in most parts of Hawai'i, so this is an obvious choice. However, it only meets a fraction of the chicken's needs.
- A nice benefit is that lots of research shows chickens raised on grass have many health benefits (both for the chickens, and those who eat them and their eggs). See pastured poultry for more information.
- Although they get nutrients from grass, chicken export Robert Plamodon offers some economic insight: "Pasture improves the flavor, texture, and appearance of poultry and eggs, but it doesn't save you any money on the feed bills. People say it does, but it doesn't."
- Sugar Cane - a report from Colombia, Sustainable intensive livestock systems for the humid tropics, says that sugar cane juice can be fed to livestock, including ducks. No word on whether a chicken could be fed that way or not.
Foraging
- In addition to grass, free-range chickens can get part of their nutrition needs from bugs and other scavenged food. In fact, with the millions of small family flocks around the developing world, this is probably the most common way chickens eat. Storey's Guide says that chickens will automatically "balance" their diet by foraging the things are aren't getting in their regular feed.
- This works well for a small number of birds, in fact most third-world villages rely on chicken's ability to support itself with foraging and scavenging. But, more than a dozen birds can quickly overwhelm the food available in a yard or chicken run, turning it into bare dirt. It seems that for a chicken farm without access to a huge area of land, forage is unfortunately at best a small percentage of a chicken's needs.
Legumes
-
Several
online references say that legumes such as fava beans [wikipedia
entry] are often grown to feed to chickens. Hopefully, this can
be done on a small scale effectively, without requiring the beans to be
grown in a huge field and mechanically harvested. - As of May 2006, i have planted fava beans on a small scale as a test.
I plant to simply pull the soft shells directly off the plant to feed to
the chickens. I found that
Seeds of Change sells
Sweet Loraine Fava Bean seeds in bulk for only $2.61/pound, with cheap
shipping to Hawai'i.
- October 2006: blog entry Fava Beans - no luck outlines our initial failure to grow favas in free-standing rows, which were heavily attacked by aphids. It also appears that our favas are not fixing nitrogen. They probably need an inoculant.
- March 2007: Amazingly, favas planted 4 months ago as a solid, dense cover crop have been almost untouched by aphids, growing strong and lush. The first blossoms are appearing.
- April 2007: Despite healthy plants and a month of flowering, there are no fava beans forming! This is disappointing, nothing left to do but pull up the plants and try some other species.
- May 2007: A few of the very most mature plants did make a few fava beans. Certainly less than the beans i used for planting! This is clearly not workable.
- Soybeans are another possibility, but growing soybeans in Hawai'i without mechanized farming is very labor intensive, potentially including raised beds, fertilizer, and hand-picking the beans, then somehow shelling them. I know this because we already grow soybeans on our land for edamame, and it's a lot of work! It doesn't seem this would produce a useful amount of chicken feed.
- Pigeon Peas [wikipedia
entry].
- Nancy Redfeather writes: "Pigeon peas do grow tall, but I usually
cut them back once or twice a year. Then they get real bushy. I cut
them back to the old wood. I use them as hedges. There are quite
a few varieties. I'm not sure which one I grow, but it yields a lot
of peas. You can actually harvest about 8-10 pods at a time by
just pulling them off the ends of the branches with your hand and dropping
them into 5 gallon buckets, when they are nice and dry. Then Gerry and
I take them up to the cement slab in front of the barn and do the Pigeon
Pea Dance. It's quite fun and only takes 5 minutes or so, they fall
out of the pods, we sweep up the whole mass, fluff it up a bit and pick
up the empty pods, the heavy seeds fall to the cement. If I plan to
store them for a long while sometimes I freeze them in ziplock bags
over night, sometimes, not always there are a few weevils of some kind.
The grinding process is very very fast. I would grind once a week. This
very high protein source might be 15-20% of a mix. Pigeon peas
used to be grown for feed in Hawai'i on 8,000 acres to feed animals.
Oh, and the Pigeon Pea leaves are as good nutritionally as alfalfa. But Gerry says, easier to bring up the babies on this type of diet from the beginning than change adult birds over." - I grew a patch of pigeon peas in summer 2007 as an experiment. The good news is they grow well. The bad news is they are fairly labor intensive to harvest and shell. I found they don't ripen all at once, so you need to gradually hand-pluck each pod as it turns brown. In this climate it doesn't seem to get them dry and brittle enough for the pigeon pea dance, so it took hours to hand-shell the pods.
- Nancy Redfeather writes: "Pigeon peas do grow tall, but I usually
cut them back once or twice a year. Then they get real bushy. I cut
them back to the old wood. I use them as hedges. There are quite
a few varieties. I'm not sure which one I grow, but it yields a lot
of peas. You can actually harvest about 8-10 pods at a time by
just pulling them off the ends of the branches with your hand and dropping
them into 5 gallon buckets, when they are nice and dry. Then Gerry and
I take them up to the cement slab in front of the barn and do the Pigeon
Pea Dance. It's quite fun and only takes 5 minutes or so, they fall
out of the pods, we sweep up the whole mass, fluff it up a bit and pick
up the empty pods, the heavy seeds fall to the cement. If I plan to
store them for a long while sometimes I freeze them in ziplock bags
over night, sometimes, not always there are a few weevils of some kind.
The grinding process is very very fast. I would grind once a week. This
very high protein source might be 15-20% of a mix. Pigeon peas
used to be grown for feed in Hawai'i on 8,000 acres to feed animals.
Chayote
-
Chayote
is a fast-growing climbing vine with large dark green leaves and large,
fleshy green fruits that resemble a squash. It is native to Mexico,
grows all around the subtropical world, and grows wild vigorously in wet
parts of Hawai'i with no care or maintenance. All parts of the plant
are edible to humans and chickens. - I have found that the leaves are delicious to chickens. They will devour the leaves, leaving just the bare vine stalk. However, there is labor in pulling down the vines and carrying them to the chickens every day.
- The fruits are produced constantly (all year), but there is less of
them (by mass) than there are leaves. The fruits mostly contain water,
fiber, a little starch, vitamin K and vitamin C. The starch and vitamins
are of some value for chickens.
I have tried feeding them to our chickens:- sliced raw (not successful)
- grated and raw (somewhat successful)
- grated and steamed (very successful)
- sliced and steamed (somewhat successful).
- The raw flesh of the fruit seems to be a little too dense for the chickens to sink their beaks into. Just a few minutes of steaming solves this problem, but many people might consider cooking food for their chickens to be a bit too labor-intensive! In light of this problem, chayote is probably best grown for its leaves.
Worms
-
Possibly
some kind of worms could be raised as a high-protein food for chickens. - Reference: Worms for Feed describe general vermiculture with "red worms" as the example, but not much about how to harvest them efficiently for feeding to chickens. The food for the worms is generally stated as "food scraps", which seem like they could just be fed directly to the chickens, unless the goal is to increase the chicken's protein intake. The chicken's manure can even be fed (carefully) directly back to the worms, for a nice natural cycle.
- Apparently, worm protein is very rich and complete, unlike vegetable/grain protein which has to be carefully balanced (as in conventional chicken feed).
- In this interesting post from 1998, one worm expert claims he "raised 80 laying chickens for two years feeding them a diet of live worms, zucchinis, and cracked corn". He rotated through a set of 60 worm bins, harvesting one bin per day with 60 days for the bin to recover and be ready to harvest again.
Root Vegetable Starches - Potato, Sweet Potato, Taro, etc.
- The traditional carbohydrates of Hawai'i, known to grow abundantly and sustainable, are not grains or legumes, they are root starches. However, there are drawbacks.
- Root starches grow slowly. Unlike a grain which can take 3-4 months, sweet potatoes can take 6 months and Taro can take 9-12 months or longer to fully grow. Potatoes can grow faster in the right setting, but are less reliable than the other two.
- You cannot feed raw, whole tubers to chickens. Aside from the labor of digging them up, there would be considerable labor and complexity in chopping and cooking them.
- The nutrition of a potato is primarily starch and vitamins, it is less than 2% protein. So, some sort of balancing protein input is needed.
Other Fruits and Vegetables
- Nancy Redfeather describes what she has used successfully in South Kona: "[...] a row or two of the big Mexican papaya...seeds are high protein, chickens love the whole thing, and rows of a short banana, like the Williams Dwarf Hybrid with their HUGE stalks of fruit. Then the Georgia southern Collard, and the Ethiopian Kale, both easy to grow greens. And the Tahitian Squash, seeds and all, one plant yields about 100 pounds of food." Tahitian Squash is Cucurbita moschata same as butternut squashes.
- Papaya is an option if you are at a lower elevation in Hawai'i. At our farm (~2500') papaya grow slowly and do not fruit usefully.
Azolla (aquatic fern)
- Fast growing, nutritious waterplant.
I have now put it all on the Azolla page.
Restaurant Wastes
- It's entirely possible that local restaurants (in all parts of Hawai'i) throw away a lot of food wastes, a great deal of which are edible to chickens. This might involve frequent driving to carry loads of smelly wastes, but is worth looking into if you can develop a good relationship with a nearby local restaurant owner.
- In my case, the nearest restaurant is 6 miles away downhill, so the gas cost of driving there and back could easily exceed the value of the food.
Byproducts of MacNut Industry, Oil Crop Industry
- Bill Steiner of UH writes: "We are probably about 3 years away from having feed produced through the feed mill at the CAFNRM farm from oil crops. This would be an oil rich feed with most nutrients; would that kind of feed be useful to you? The original plan was to use it as cattle and fish feed. What about byproduct from ground macadamia nut? I and several others in the ag community are looking at taking waste nuts not usable by the nut producers and grinding it for the oil; HELCO has agreed to buy it. Of course there may be other markets for the oil but the byproduct might make a good poultry feed."
- I looked in the literature about levels of oil in chicken feed, and didn't find much. It mostly considers the levels of carbohydrate and protein, getting them to adequate levels and in balance with each other. It might be possible to mix oily byproducts with grains etc. for a usable feed.
Other Possible Foods
- The FAO study Village chicken production system in rural Africa describes a lot of unconventional feeds from the developing world which might possibly apply here in Hawaii: fermented cassava chaff, ripe plantain, melon pulp, amaranthus seeds, broken cowpea, palm oil sludge, sweet potato, molasses, mango seed kernel, salseed meal and so forth. Sometimes insects are even raised deliberately, as in eggs and larvae of termites, maggot culture tanks.
- Reddy, C.V. & Quadratullah, S. 1996. Strategic feeding supplementation through locally available resources. From Proceedings, 20th World Poultry Congress, New Delhi. India, 2–5 September 1996, Vol. 1, p. 3–16. A whole list of fascinating possibilities are listed, with encouraging descriptions: "The protein content of house fly and their pupae is about 60% and M.E value is 2,500 k.cal/kg. The amino acid content of fly pupae is comparable to bone and fishmeal. It is also rich in fat and minerals. [...]"
- Real Eggs from a Real Farm describes an experimental farm in arid New Mexico which is taking another approach; instead of trying to create food sources appropriate for chickens, they are breeding successive generations of the chickens to thrive on whatever food and conditions are already locally available. It certainly takes a lot of time and energy, but very interesting.
Crop Seeds
- For most of the crops above, things chickens might eat, it is not obvious how to get a large volume of seeds cheaply. Most stores and sites that sell seed, sell little tiny packets. There are only a few online stores that sell bulk seeds. A good starting point is HOFA - Organic Seed Sources.