6

Contagious Abortion.

16. (a) Cattle.—The presence of the Br. abortus
has been confirmed in cases of abortion
in cows which occurred during the year.
Necessary steps in respect of the control of this disease are
being taken.

(b)  Donkeys.—Fifty-five donkey mares were vaccinated
monthly from the date of covering to the date of foaling.
Out of this number 8 aborted, compared with 67 vaccinated
and 5 abortions in the previous year. The conclusion to be
drawn from these two results appears to be that the vaccine
is of doubtful value.

(c)  Goats.—Abortion in goats was again prominent
during the year under report and investigation of these out-
breaks is in progress in collaboration with the Punjab Veteri-
nary College, Lahore.

Hospital Section.

17. A brief summary of the work done at the Farm
Hospital is as follows:—

Fourteen animals were tested with the "Double Intra-
dermal" Tuberculin test and two with the subcutaneous test,
two animals reacted positively, while two were suspicious,
the remainder proving negative.

Nine cases of Johne's disease amongst the animals
of the farm were suspected, five proved positive and the re-
maining four negative.

Six cases of Foot and Mouth disease were injected with
fresh serum prepared from recovered cases, but the results
were not encouraging.

After suitable preparat on, all the equines on the farm
were subjected to treatment with carbon disulphide, for the
control of internal parasites. The results were encouraging.

In order to eradicate warble infestation on the Farm,
the following dressings were used on 2,769 animals:—

(1)   Tobacco and lime.

(2)  Cooper Warble fly powder.

(3)   Cooper Warble cattle wash.

The results with all the three dressings were satisfactory.