| Material Information
||Preliminary observations of guar seed meal a potential protein supplement
||Animal husbandry mimeograph series
||4, 1 leaves : ; 28 cm.
||Arrington, Lewis Robert, 1919-
Jeffords, T. H
University of Florida -- Agricultural Experiment Station
University of Florida -- Dept. of Animal Husbandry and Nutrition
||Agricultural Experiment Station, Dept. of Animal Husbandry and Nutrition
||Place of Publication:
||Animal feeding -- Florida ( lcsh )
Feeds -- Research -- Florida ( lcsh )
Guar -- Florida ( lcsh )
||government publication (state, provincial, terriorial, dependent) ( marcgt )
non-fiction ( marcgt )
||Statement of Responsibility:
||L.R. Arrignton, T.H. Jeffords and Sue Wagner.
| Record Information
||University of Florida
||All rights reserved by the source institution and holding location.
||oclc - 76925780
Animal Husbandry Mimeograph
Series No. 55-6
PRELIMINARY OBSERVATIONS ON GUAR SEED MEAL A POTENTIAL
L. R. Arrington, T. H. Jeffords and Sue Wagner1
Guar (Cyamopsis tetragonoloba) isa leguminous plant introduced
into this country from India. It is drought resistant and suitable
for cultivation in semiarid regions. The seeds are used primarily
for supplying a gum which is utilized as a stabilizer in food
processing. The remaining seed meal is used to some extent as a
fertilizer and the relatively high protein content places it in a
favorable position as a possible feed for animals. Guar has been
used for a long time as a human food in India, but there appears to
be no report of the use of guar or of the guar seed meal in animal
This study was undertaken to determine some aspects of the feed-
ing value of guar seed meal.
The seed meal used in the experiment was analyzed in the usual
manner for protein, ether extract, moisture and total ash. Calcium,
phosphorus and magnesium were also determined and the results are
recorded in table 1.
'Arrington, Assistant Animal Husbandman, Agricultural Experiment
Station; Jeffords, Graduate Assistant; Wagner, Laboratory Assistant.
Department of Animal Husbandry and Nutrition. Guar seed meal was
supplied by H. J. Baker and Brothers, Tampa, Florida.
TABLE 1. ANALYSIS OF GUAR SEED MEAL
Protein 35.13% Calcium 0.32%
Ether extract 4.62% Phosphorus 0.41%
Total ash 4.60% Magnesium 0.46%
Forty four rats and two calves were used in the feeding "este.
Long-Evans rats were weaned at 24-28 days of age and fed the diets
(table 2) ad libitum for a 12 week growth period. Following the
growth period, the rats receiving 40 per cent guar meal were
continued on this diet for a period of four months. One group of
rats was fed a similar diet (table 2) containing soybean oil meal
in place of guar meal so that growth comparisons could be made.
Preliminary feeding indicated that 40 per cent guar meal in the diet
was very unpalatable to rats and feed consumption was low. An additic:ca!
diet containing 10 per cent guar meal was prepared to determine if
this proportion of guar meal would be more acceptable. Of the total
protein in the two rat diets, 71 and 15 per cent was supplied by
guar. Thirty four per cent of the total protein of the calf ration
was supplied by guar.
The two calves used in the experiment were five and seven month
old dairy type calves. They were fed timothy hay and the grain
mixture (table 2) according to the Morrison standard for a period
of seven weeks. Weekly weights of the rats and calves were made
during the experimental period.
TABLE 2. EXPERIMENTAL DIETS CONTAINING GUAR SEED MEAL
Soybean oil meal
Guar seed meal
Dried brewers yeast
Salt Mix No. 2
Guar seed meal
Ground snap corn
Results and Discussion
Results with rats were unsatisfactory. A large proportion of the
weanling rats receiving 40 per cent guar meal died within four weeks,
and the growth rate of those which survived was greatly retarded.
The poor growth may be attributed to a large extent to poor palatability
and very low feed consumption. The diet containing 10 per cent guar
and 30 per cent soybean meal supported better growth but not equal to
a diet of 40 per cent soybean meal. When the 40 per cent guar diet
was pelleted and fed to one group of rats, the feed consumption and
growth was not improved.
An explanation for the large number of deaths of weanling rats
was not found, but it does not appear to be a toxic principle in the meal.
__ __ ___
TABLE 3. SUMMARY OF EFFECTS OF GUAR SEED MEAL UPON WEANLING RATS
Diet No. Sex No. dead at Weight gain at
Rats 4 weeks 12 weeks (gms)
11 8 106
40% guar 13 9 9 87
10% guar 7 0 142
40% soybean 7 c 0 216
meal 3 9 0 145
Those rats which survived for four weeks were continued on the 40 per
cent guar diet for four months. At that time they were in apparent
good health except for stunted growth. Three mature rats were fed
the 40 per cent guar diet for four months. They were not adversely
affected except for reduced feed intake and slight loss in weight.
The results with calves were more favorable than were results
with rats. The meal was palatable in the amount fed; the entire
portion being consumed from the first feeding. Growth comparisons
with other rations under similar conditions were not possible, but
weight gains for the seven week period were satisfactory. No
adverse effects were observed in the calves.
Preliminary observations were obtained on guar seed meal which
was fed to weanling rats and to two growing calves. Palatability and
feed consumption were low for rats. Growth was poor and was attributed
in large part to low feed consumption. A large proportion of the
weanling rats fed 40 per cent guar meal died, but a like amount fed
to mature rats was not harmful except for slight loss in weight.
Guar meal was more palatable to calves and weight gains were
satisfactory on a ration containing 20 per cent guar meal.
If larger quantities of the meal become available, additional
research should be undertaken to obtain more information on its
value for various species. These limited observations should be of
value in future experiments.
Animal Husbandry and Nutrition