ABSTRACTS
243
(8) The percentage of P 2 O 5 in the herbage is low compared with the percentages obtained
from Continental pastures. It is, however, very similar to the results obtained from certain South
African pastures. The highest production of P 2 0 5 is obtained from Series 3 in 1927 and Series
2 in 1928.
(9) The P 2 O 5 content of fortnightly and monthly cuts is almost identical. With less severe
cutting, however, the P 2 O 5 content drops markedly to a minimum in the herbage at maturity.
(10) The P 2 O 5 content is maintained throughout the season when the pasture is cut at
fortnightly intervals.
(11) The calcium-phosphorus ratio is very high in all cases, but is reduced when pasture is cut
at fortnightly intervals.
(12) The herbage from fortnightly and monthly cuts is more than twice as rich in crude
protein as the mature herbage from a single cut.
(13) The highest production of crude protein is obtained from pasture cut at 2-4 weekly
intervals, the higher protein content of the young herbage more than counterbalancing the depressed
yield.
(14) Pasture cut at fortnightly intervals is lowest in percentage crude fibre. With decreased
frequency of cutting, the crude fibre content steadly rises.
The Requirements of Concentrates of Sindhi cows yielding upto 10 lbs. of Milk
per day under Deccan Conditions.—V. G. GOKHALE, M. M. DESAI and C. N. DAVE
(Journal Central Bur. Anim. Hus. & Dairy. India, Vol. IV (1930), Part II, pp. 55-67.)
The authors describe an experiment they carried at the Poona Agricultural College Dairy in
cutting down the ration of concentrates by omitting altogether-coarsely ground grain of tur
(Cajanus indicus) from a ration of 2 lbs. wheat bran, ½ lb. groundnut cake, 1 lb. coarsely ground
grain of tur and 1 lb. cotton seed and keeping the roughages uniform. The groups under each
treatment consisted of three animals. The tests were carried on in five experimental periods of
seven days each with intervals of 2 days for each change over. Their conclusions are that
(1) Reduction of the daily concentrated ration by omiting the one pound of coarsely ground tur grain
tends towards a reduction in the daily milk yield by 3 to 3⅓ ozs. or 2½ to 3½ per cent. per head.
(2) This reduced ration supplied digestible nutrients which are slightly more than those of the
modified Wolff and Lehman standard ; and (3) with the current prices of milk and coarsely ground
tur grain, the reduced ration, inspite of the associated reduction in milk yield, effects a net profit of
six to seven pies per day. [V. G. G.]
The Pathogenicity of the Species of the Genus Brucella for the Fowl.—
FOREST HUDDLESON and M. W. EMMEL. (From Agricultural Experiment Station,
Michigan State College of Agriculture and Applied Science, Technical Bulletin
No. 103, August 1929.)
SUMMARY.
The six foregoing experiments conducted on 48 birds of several breeds demonstrate that:—
1. The species (Br. meletensis, Br. abortus and Br. suis) of the genus Brucella produce a disease
of a chronic nature which nearly always had a fatal termination in the experimental birds.
2. The agglutination test is a reliable method for determining the presence of the disease in a
flock, but it cannot be depended upon as an indicator of infection in individual birds.
F