266 



EXPEEIMENT STATION EECORD; 



profit per steer. More beef and pork were produced from a bushel of corn by 

 the lot which received broken ear corn. This lot produced the second highest 

 profit per steer. 



Forage crop rotations for porlc production, by L. A. Weaver. — It was found 

 that after deducting the gain put on by com fed to hogs grazing on different 

 forage crop plats, the returns per acre with pork at 7 cts. per pound were as 

 follows : With rape, oats, and clover, $47.04 ; rape and oats, $44.10 ; rape in rows 

 (cultivated), $44.95; rape broadcasted, $34.09. 



Relative efficiency of pregnant mares for farm ivorlc, by E. A. Trowbridge, 

 E. H. Hnghes, and S. T. Simpson. — The results indicate that draft mares can 

 produce healthy and normal foals and still do their share of ordinary farm 

 labor. Mares with suckling foals show a greater loss in weight in the spring 

 and summer seasons than do mares not suckling. Mares nursing foals make 

 very rapid gains in weight after weaning. 



Feeding wheat to fattening swine, by L. A. Weaver. — A ration composed of 

 corn, wheat, and tankage 5:5:1, or of wheat and tankage 10 : 1, made very 

 economical gains on swine. When wheat was fed in one of the above combina- 

 tions more gain was produced than when it was fed alone or with corn only, 

 and more gain was produced by com alone or com and tankage 10 : 1. 



A study of the residual effects of forage crops for swine, by L. A. Weaver. — 

 The first year's work indicates that there is but slight advantage in feeding hogs 

 that have been previously on pasture, as compared to hogs that have been 

 previously kept in a dry lot. 



Self-feeders for fattening swine, by L. A. Weaver. — A slight advantage has 

 been observed in feeding pigs by a self-feeder over the ordinary method of 

 feeding. 



Some factors affecting fetal development, J. M. Ewaed (Proc. Iowa Acad. 

 8ci., 20 {1913), pp. 325-330). — This is a jirogress report of work being carried 

 on at the Iowa Experiment Station to determine the effect of the nutrition of 

 the dam during the pregnancy period upon the developing fetus. Studies with 

 five lots of 5 gilts each have been previously noted (E. S. R., 28, p. 574). 



Three lots of 10 yearling sows each and four lots of 12 ewes each were also 

 fed upon different feed stuffs with the following results : 



Effect on offspring of feed fed pregnant swine and ewes. 



From this it is seen that the supplemented rations not only produced larger 

 but stronger pigs at birth. Even though the carbohydrates were limited as in 

 the meat-meal lots, the increase in protein and ash was such as to influence 



