| Material Information
||The Effect of subcutaneous injections of essential nutrients on the rate of production and interior quality of the eggs of aging hens
||Poultry Science mimeograph series - Florida Agricultural Experiment Station ; PY66-2
||2 leaves : ; 28 cm.
||Herrick, George Marvin, 1942-
Harms, R. H ( Robert Henry ), 1923-
Fry, Jack L
University of Florida -- Agricultural Experiment Station
||unknown ( endowment ) ( endowment )
||Florida Agricultural Experiment Station
||Place of Publication:
||Chickens -- Yields -- Florida ( lcsh )
Chickens -- Nutrition -- Florida ( lcsh )
Eggs -- Quality -- Florida ( lcsh )
||bibliography ( marcgt )
government publication (state, provincial, terriorial, dependent) ( marcgt )
non-fiction ( marcgt )
||Statement of Responsibility:
||George M. Herrick, R.H. Harms, and Jack L. Fry.
||Includes bibliographical references (leaf 2).
| Record Information
||University of Florida
||University of Florida
||All rights reserved by the source institution and holding location.
||oclc - 318812052
Poultry Science Florida Agricultural
/ Mimeograph Series No. PY66-2 Experiment Station
June, 1966; 200 copies Gainesville, Florida 32601
The Effect of Subcutaneous Injections of Essential
Nutrients on the Rate of Production and Interior Quality
of the Eggs of Aging Hens
George M. Herrick, R. H. Harms, and Jack L. Fry
The rate of production and interior quality of eggs decrease with the aging
of the laying hen. Harms and Waldroup (1963) showed that, although the laying
cycle was decreased for pullets as the laying year progressed, birds receiving
supplemental methionine did not have as great a decrease in the cycle as did
birds not receiving this supplement. Low levels of protein also gave a decrease
in the laying cycle. These facts would tend to indicate that the possible
reason for the decrease in production of older hens is because of their inability
to mobilize dietary protein for utilization in egg production. Also,the hens'
inability to mobilize sufficient protein could account for lowered egg quality.
Solutions of essential nutrients have been used as an aid in nourishment of
animals weakened due to sickness or post-surgical states. One product has been
recommended for calves, foals, and pigs at the rate of 2-3 cc. per pound of
body weight and for mature cattle, horses and swine at the rate of 1 cc. per
pound of body weight. It may be injected intravenously, subcutaneously or
intraperitoneally. Such solutions have not been specifically recommended for
use in chickens. Therefore, this study was conducted to determine their effect
on interior egg quality and rate of production of aging hens.
Supplementation of amino acids, B-complex vitamins and dextrose was
administered to commercial SCWL hens that had been in production 18 months.
The solution used for this supplementation was a commercial product, EL-BEX*,
the composition of which is shown in table 1.
Forty-two birds used in this study were maintained in individual laying
cages and fed a standard 16.3% protein layer diet. Haugh unit indices were
calculated for the eggs of each hen for six days prior to administration of the
EL-BEX. The birds were placed in three groups of fourteen birds each. The
grouping was done so that each group had an approximately equal Haugh unit average.
The EL-BEX was administered by subcutaneous injection given under the main
feather tract on the breast and at the junction of the breast and legs. No
more than 5 cc. were injected at any one point. The first group of hens was
given no injection and served as the control. The second group received 10 cc.
of EL-BEX on the sixth day of the study and again on the eighth day. The third
group was given 30 cc. on the sixth day and 20 cc. on the eighth day.
The post-injection period eggs were collected and Haugh units were
calculated for these eggs. Averages were computed for each group.
*Supplied by the Elanco Products Company, a division of Eli Lilly and
Company, Indianapolis, Indiana.
Table 1. Composition of EL-BEX
calcium chlor de
L argiinie hydrochloride
L histidine hydrochloride monohydrate
L lysine ronohydrochloride
L cysteine hydrochloride monohydrate
pantothenic acid (sodium pantothenate)
methyl parahydroxybenz oate
* per 100 cc of deionized water
RESULTS AND CONCLUSIONS
The Haugh unit averages for each group of hens, prior to and after the
injection of the EL-BEX are shown in the Tible 2.
TABLE 2. Haugh unit averages of eggs from the three treatment groups
0 10, 10 cc. 30, 20 cc.
PRE-INJECTION 71.8 (H h unit 72.1
POST-INJECTION 73.4 69.1 72.4
It is readily apparent that the EL-BEX had no beneficial effect upon the egg
quality. Production rates also did not change following injections. It is
concluded that, under the conditions of this test, the EL-BEX solution was of no
value in increasing rate of production or improving interior egg quality.
Harms, R. H, and Waldroup, P. W., 1963. Length of Laying Cycle as Influenced by
Dietary Protein Level. Poultry Sci. 42:1195-1197.