Evaluating the effects of Feeding
Protein Patties to Honey Bees
A friend sent me some info a while back, but I did not get around to doing anything with it
because it was full of hyperlinks going nowhere, and because I wondered if it is copyright.
At any rate, I got to looking at it again and decided to excerpt it here. Hopefully this is
fair use.
My friend says:
You were looking for a comparison of yeast vs soy.....
NUTRITIONAL CONSIDERATIONS IN CHOOSING PROTEIN AND
CARBOHYDRATE SOURCES FOR USE IN POLLEN SUBSTITUTES FOR HONEY BEE APIS-MELLIFERA.
Author, Editor, Inventor: LEHNER-Y {a}
Author Address: {a} BEE RES LAB, AGRIC RES SERV, USDA, UNIV WIS, MADISON, WI 53706, USA
Source: Journal-of-Apicultural-Research. 1983 (RECD. 1984); 22 (4): 242-248.
Publication Year: 1983 (RECD 1984)
Document Type: Article-
ISSN (International Standard Serial Number): 0021-8839
Abstract: Small colonies of honeybees (A. mellifera)
were fed for 6 wk on diets of protein concentration increasing from 5-30% using soyflours
and a Torula yeast product, the commonly available pollen substitutes. Either honey or
sucrose was used in formulating the diets; sucrose enhanced protein utilization. While no
statistical difference was found in brood production at different protein levels, the 5%
level of protein may not be as good as the others. All tested supplements and pollen gave
the same efficiency of protein utilization at all concentrations. The Torula yeast product
sustained brood-rearing longer than the soyflours. Addition of proteolytic enzymes to
soyflour diets had no effect on protein utilization. Colonies fed pollen raised more brood
than those fed the test diets, and on the average produced populations about twice as
large.
ALSO
DISAPPEARING DISEASE 1. EFFECTS OF CERTAIN PROTEIN
SOURCES GIVEN TO HONEY BEE COLONIES IN FLORIDA USA.
Author, Editor, Inventor: KULINCEVIC-J-M {a}; ROTHENBUHLER-W-C;
RINDERER-T-E
Author Address: {a} DEP ENTOMOL, OHIO STATE UNIV, COLUMUBUS, OHIO 43210
Source: American-Bee-Journal. 1982; 122 (3): 189-191.
Publication Year: 1982
Document Type: Article-
ISSN (International Standard Serial Number): 0002-7626
Abstract: A commercial beekeeper's report of
disappearing disease stimulated an investigation utilizing the diseased colonies. The
effects on population growth and honey storage, of giving 1 comb of pollen, of feeding
Fumidil-B and of feeding soybean flour with yeast and soybean flour alone were observed in
an experiment involving 36 colonies of bees. Addition of 1 comb of pollen led to a
significant gain in bees and the production of more honey. Fumidil-B had no effect. Feeding
of expeller processed soybean flour, from a supply 3 or 4 yr old, especially without yeast,
hindered population growth. Inadequate amounts of natural pollen along with feeding an
inferior pollen substitute were 2 causes of this beekeeper's losses.
Update Code: 1983
And, I finally found this article....
EFFECT OF SUPPLEMENTAL FEEDING OF HONEY BEE
APIS-MELLIFERA HYMENOPTERA APIDAE POPULATIONS AND THE ECONOMIC VALUE OF SUPPLEMENTAL
FEEDING FOR PRODUCTION OF PACKAGE-BEES.
Author, Editor, Inventor: PENG-Y-S {a}; MARSTON-J-M;
KAFTANOGLU-O
Author Address: {a} DEP ENTOMOL, UNIV CALIF, DAVIS, CALIF 95616
Source: Journal-of-Economic-Entomology. 1984; 77 (3): 632-636.
Publication Year: 1984
Document Type: Article-
ISSN (International Standard Serial Number): 0022-0493
Abstract: To determine the effect of feeding on A.
mellifera L. populations and the economic value of feeding colonies for spring production
of package-bees, a feeding experiment was conducted to evaluate the effect of feeding time
and feeding treatments on the A. mellifera population, and to compare the cost with the
benefit of feeding. Colonies produced significantly more bees from fall feeding than from
spring feeding or continuous feeding from fall to spring (P < 0.01; analysis of variance).
Colonies fed with protein supplement containing 21% protein from Torula yeast and/or syrup
also produced significantly more bees than unfed control colonies (P < 0.05; Duncan's
multiple range test). Colonies fed with 1/3 the amount of protein supplement in the fall
had the potential to yield high adult bee populations and a net gain in production of
package-bees. Feeding sugar syrup in spring was less profitable than feeding protein
supplement in fall.
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These studies all point to interesting conclusions, and it would be easy to make assumptions
from what is presented.
Unfortunately beekeepers have tendency to go off half-cocked and jump to conclusions from scant
evidence, from inference, or from rumour. A prime example is the large number of Alberta
beekeepers who are mindlessly applying a coumaphos to their hives with no evidence of any need to
do so, and the number of beekeepers who are afraid to use extender patties after Shim maligned them
with conjecture, a conjecture which has proven unfounded. I hope that we don't make that kind
of mistake here.
The obvious conclusions may be exactly opposite to the truth. Hopefully I'll be able to
find the time to analyze the abstracts and show what the most probable conclusions -- if any --
might be. If nothing else, they certainly indicate what we need to confirm for ourselves.
-
Looking at "NUTRITIONAL CONSIDERATIONS IN CHOOSING
PROTEIN AND CARBOHYDRATE SOURCES FOR USE IN POLLEN SUBSTITUTES FOR HONEY BEE APIS-MELLIFERA",
the first study above, I see that
-
Pollen was considerably better than either torula yeast or
soyflour, and that
-
The yeast was better than the soy alone.
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Sucrose was better than honey (and I assume High Fructose Corn
Syrup) for the sweetener portion of the patties
-
Protein concentrations between 5 and 30% seemed to be equally
efficient, but at 5%, the effect was falling off.
-
Obviously twice as much patty was required at 10% than at 20%,
to achieve the same result, however.
-
Adding enzymes to the soy did not seem to help.
They do not specify what sort of pollen, and we all know that pollen
loses its value fairly quickly over several years of storage. I have wondered about
how the value of supplements deteriorates, and that is addressed in one of the next
studies.
-
"DISAPPEARING DISEASE 1. EFFECTS OF CERTAIN
PROTEIN SOURCES GIVEN TO HONEY BEE COLONIES IN FLORIDA USA", the next study,
demonstrates:
-
That shortage of pollen can cause dwindling.
-
Fumigillan did not help, so we can assume that nosema was not a
prime contributor to decline.
-
Old soy flour, fed alone, made matters worse.
-
Bad pollen supplement was worse than nothing
-
Adding yeast helped
-
Feeding combs of pollen had a good effect
This study raises questions that are not answered, but seems to
indicate that old soy flour can be worse than nothing. Nothing is learned here about
fresh soy flour, and we are not told the age of the yeast or pollen.
-
EFFECT OF SUPPLEMENTAL FEEDING OF HONEY BEE
APIS-MELLIFERA HYMENOPTERA APIDAE POPULATIONS AND THE ECONOMIC VALUE OF SUPPLEMENTAL
FEEDING FOR PRODUCTION OF PACKAGE-BEES was run in California -- I assume.
Although conditions and requirements there are different from Alberta, we can see that the
effects of Fall feeding carry on until Spring. In fact, to quote, " Colonies fed with
1/3 the amount of protein supplement in the fall had the potential to yield high adult bee
populations and a net gain in production of package-bees. Feeding sugar syrup in spring was
less profitable than feeding protein supplement in fall". This seems to me to be very
significant and indicates that we need to evaluate this effect in Alberta.
This article for printing |