576 EXPERIMENT STATION RECORD. [Vol.43 



15 weeks with the following results: (1) Daily gain per heatl of l.Gl lbs. 

 when the daily grain ration was boiled whole linseed 8 oz. and tlour 2 oz. ; (2) 

 gain of 1.54 lbs. on 8 oz. of oat'nieal and 4 oz. of cruslied linseed, and (3) gain 

 of 1.77 lbs. on 9 oz. of crushed linseed. The fourth lot received a grain ration 

 of linseed meal 7.5 oz. and " beaii meal " 12 oz. but was given skim milk (8 lbs. 

 daily) during the tliird and fourth weeks only. The daily gain was 1.36 lbs. 

 per head. 



At tlie Central Development Farm, Weraroa, where the second test was con- 

 ducted, the initial weights varied from 261 to 280 lbs. per lot. Only one lot 

 received skim milk (16 lbs. per head daily) througliout the last 15 weeks. 

 Linseed was also fed to this lot (4 oz. per day boiled to a .lelly in water), and 

 the average daily gain was 1.6 lbs. Two lots were fed exclusively on skim milk 

 (16 lbs.) during the third and fourth week, and during the final 13 weeks 

 received in one case 1 lb. of crushed oats and in the other 3 oz. of linseed 

 meal and 4 oz. of flour. The daily gains per head were, respectively, 1.7 and 

 1.5 lbs. The fourtli lot received 8.5 lbs. wiiole milk per head during the first 

 week of the test, 16 lbs. of skim milk during the second weelv, and an aqueous 

 infusion of "bean meal" (8 oz.) and linseed meal (6 oz.) without milk during 

 the last 15 weeks. The daily gain was 2.3 lbs. per liead. 



Suggestions regarding dairying in northwestern Kansas, .1. B. Fitch and 

 J. J. Bayles (Kansas Sta. Circ. 81 {1920), pp. 16, figs. 6). — As an example of 

 dairy farming in northwestern Kansas, some results secured at tlie Colby sub- 

 station witli a small herd of grade Ayrshires are outlined. The use of tlie pit 

 silo Is considered an important item in successful dairying in tliis region. 



The decline of alpine dairy farming in Switzerland, Austria, and 

 Bavaria, with particular reference to the Bavarian Allgiiu, T. Spann 

 (Landto. Jahrb. Bnyern, 9 (1919), No. 9-10, pp. 505-583) .—This is a study of the 

 economic conditions which in recent decades have tended to keep milking stock 

 in the valleys during the mountain pasture season, tlie elevated pastures being 

 used chiefly for heifers and dry cows. A live-stock census of the Allgjiuer Alps 

 of Bavaria is included. 



A study of the dairy herd records of the Pennsylvania Experiment Sta- 

 tion, A. L. Beam (Pennsylvania Sla. Rpt. 1916, pp. 353-391, fif/s. .3).— This 

 consists of tabulated statistics (with discussions) of milk and fat production 

 in a grade Guernsey herd of which records have been kept since 1890. " No 

 selection has been practiced, every heifer calf being raised and kept in the 

 herd regardless of its conformation and producing ability." The records are 

 arranged so tliat the production of an individual in successive lactations can be 

 studied conveniently. 



The annual milk yields of a cow were found to increase through the first 

 six lactations and then decrease slowly. The average individual produced 

 76 per cent of her maximum milk yield as a two-year old, 83 per cent as a 

 three-year old, and 86 per cent at the age of four years. The fat percentage 

 was highest in the second lactation. 



" In studying the records of 81 cows which are included in these tables, it 

 was found tliat had these cows been culled uixm the basis of their two-year- 

 old records in only two cases would good cows have been sacrificed." 



Of the seven herd sires employed, two failed to increase the average milk 

 production of their daughters over that of the dams. 



Advanced-registry testing of dairy cows, F. W. Woll and P. I. Dougherty 

 (California Sta. Circ. 218 (1920), pp. 15, figs. 6). — This circular de.scribes the 

 conditions under which advanced-registry testing is conducted in California. 

 Some of the records secured are cited. 



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