68 EXPERIMENT STATION RECORD. [Vol.43 



young white rats fed for 12 weeks on a standard mixed grain diet plus fresh 

 pars anterior proprior of the pituitary gland (ox) exhibited a greater rate of 

 growth than a control group fed beef muscle and the standard diet. They also 

 showed a more rapid development of the reproductive system, as indicated by 

 hypertrophy of the organs and by the earlier birth of young. A second experi- 

 mental group of 37 individuals fed on pars tuberalis manifested no increased 

 sexual development. 



"This study has not shown that any of the functions ascribed to the anterior 

 lobe as a whole are due to the pars tuberalis." 



The feeding' and improvement of live stock, M. de Campos Penteado (A 

 AlimcDitarao e o Alelhoramento do Gado. Sao Paulo: Sec. Ayr., Com., e Obras 

 Pub., 1918, 2. ed., pp. 71, fif/s. 34)- — A treatise on the cultivation of forage crops 

 in Brazil and their utilization by live stock. 



Sudan grass silage, C. T. Dowell and W. G. Friedemann (Oklahoma Sta. 

 Rpt. 1919, pp. 55-58). — Continuing the observations recorded in Bulletin 115 

 (E. S. R., 37, p. 672), the authors report the proximate composition of fresh and 

 mature Sudan grass silage and determinations of the acid, sugar, and alcohol 

 present in the samples. The silage was made in a galvanized iron cj^lindrical 

 silo (4 by 9 ft.) during the season of 1918. 



"Possibly the most important thing noticed in connection with this silage 

 is that more reducing sugars were found in the mature silage than in the fresh 

 silage. It should be noted also that there is only 0.1 per cent of sugar present 

 in the fresh silage, and yet the silage was kept in perfect condition." 



It is stated that the density was only 54 per cent of that of corn silage put up 

 in a similar manner, but in spite of this indication of lack of compactness the 

 spoilage was only 10.1 per cent by weight. 



Feeding sunflowers, C. N. Abnett, AV. E. .Joseph, and O. Tketsven (Montana 

 Sta. Bui. 131 (1919), pp. 13-29, figs. ^).— Besides citing the results of a test of 

 sunflower silage with dairy cows in 1916-17, previously noted from Bulletin 

 118 (E. S. R., 39, p. 182), the authors report additional tests of the silage with 

 cows, pregnant ewes, and brood sows, and a trial of green sunflowers as a 

 .'toiling crop. 



Alfalfa hay and sunflower silage were compared in 1917-18, 16 milch cows 

 divided into 2 groups being fed by the reversal method during 2 periods total- 

 ing 68 days. When alfalfa hay was sole roughage, 26.7 lbs. of it on the average 

 was consiimed daily per cow and the daily milk yield averaged 29 lbs. When 

 alfalfa hay (limited) and sunflower silage was fed, the roughage ration aver- 

 aged 10.9 lbs. of the former and 41.3 lbs. of the latter and the milk yield was 

 28.2 lbs. The consumption of grain (rolled oats, dried beet pulp, and cotton- 

 seed meal, 2:2:1) was substantially equal in both cases, viz, 10.5 lbs. daily. 

 The cows became slightly heavier during alfalfa feeding. " The butter- 

 fat production was approximately the same. Allowing for the difference in 

 gains in live weight and milk produced, it was found that 2.83 lbs. of sun- 

 flower silage were equal in feeding value to 1 lb. of good alfalfa hay under 

 the conditions of this experiment. Under the same conditions 0.71 lb. of dry 

 substance of sunflower silage was equivalent to 1 lb. of dry substance in alfalfa 

 hay." , 



In 1918-19 two groups of 8 cows were fed during two 28-day periods to de- 

 termine the relative value of silage made from sunflowers harvested (1) when 

 30 per cent and (2) when 90 per cent of the plants were in bloom. " The data 

 presented show the cows when receiving the early-cut silage averaged a gain 

 of 5.6 lbs. more in live weight during the 28 days and consumed on an average 

 0.15 lb. moi'e grain, 0.11 lb. more hay, and 0.7 lb. more silage per head per 

 day than during the period they were fed the late-cut silage. During the 



