366 EXPERIMENT STATION RECORD. [Vol.40 



the dry matter of the feeding stuffs, percentage digestibility, influence of the 

 starch on the digestibility of the hay. average dally urinary and gaseous ex- 

 cretion, average daily gains of protein and fat, methane production, metaboliz- 

 able energy, heat emission and production, and the net energy values per kilo- 

 gram of dry matter. The experiments are briefly compared as to methods 

 and results with similar work by Kellner. 



" Tbe digestibility of the rations, the Losses in the urine, and the extent of 

 the methane fermentation showed a distinct increase as the total amount of 

 the ration was reduced. Tbe greater loss of energy in tbe urine and methane 

 on tbe lighter rations more than compensated for tbo smaller losses In the 

 feces, so that the proportion of the total energy metabollzable was somewhat 

 less than on the heavier rations. 



"Tbe metabollzable energy of the Btarcfa was 10 per <vnt greater than the 



averag mputed from five experiments by Kellner, the difference being due 



chiefly to smaller losses In the feces. Starch caused the usual depression in 

 digestibility. 



"The average beat Increment caused by the consumption of alfalfa baj was 

 999 calories per kilogram of dry matter, as compared with 981 calories found 

 for the same bay in the previous year and with an average of 1,169 calories in 

 six previous experiments on three different samples. 



"Tbe average boat Increment for the Btarch was 1,692 calories per kilogram 

 of dry matter, as compared with 1,248 calories computed from Kellm - 

 experiments. The net energy value of the starch was about 9 per cent lower 

 than that computed from Eyeliner's experiments, only -»;> per <ent as compared 

 with 59 per cenl of the metabolisable energy being utilized by the animal." 



[Feeding value of Para grass], ( '. W. E&DWAZD8 [Quam. sta. H]>t. 191" 

 io, ii. i :>. Seven oativi grade heifer were divided Into two i 



tbe first kepi on Pars pasture and the second on native pasture. During the 

 spring (dry season » all of the tirst group gained In weight and all of the second 



b>st. Tbo initial weight of tbe first lot was considerably less than thai of the 

 second. In a similar comparison witb two lots of six 3-months-old pigs, the 

 lot on oative pasture gained an av< of 29.8 lbs. during three months In 



the Bpring and the lot on Para grass 41 lbs. during the same period. There 



was no disparity in initial weights. 



In an experiment comparing alfalfa bay witb the much cheaper Tara grass 

 as feed for horses, it was found that the latter could be used as sole f n a 



maintenance ration for horses doing Light work. 



Experiments with bolly refuse. C. T. DOWEU and W. Gh Fkiiwm\n\- 

 {Oklahoma Sta. Bid. in (.1918) pp. 8).— " Bollles " is a term that has boon ap- 

 plied to unopened or partly opened cotton bolls gathered at the end of the 

 picking season and sold to ginners who put them through a cracking machine 

 and then gin them. Tbe refuse, consisting of the burr and some onglm 

 cotton, has been used as a fuel and, in recent yoars. as a feeding Stuff. Using 

 two 18-months-old steers, the authors have studied the digestibility of this 

 bolly refuse, both when fed alone and with the addition of alfalfa meal and 

 cottonseed meal. The digestion coefficients were all low, but the refuse so. mod 

 a satisfactory roughage as the steers gained somewhat in weight 



It is pointed out that the feeding value Of bolly refuse would depend upon the 

 percentage of seed and unginned cotton, both of which varied considerably 

 In samples of refuse secured from different sources. 



Analyses of the bolly refuse, and the cottonseed, cottonseed cake, and oil. 

 derived from "hollies" are reported, as well as the composition of tbe ash. 



The composition of some Indian feeding stuffs, Jatinhka N\th Si \ 

 Retearch IfUt. 1'usa Bui. 70 {1917), pp. 60+71").— This is a combined list of 



