620 



EXPERIMENT STATION RECORD. 



"The above shows a very slight increase lu the percentage of females, with an 

 increase in the age of the cows. 



"In the data collected no fact is so prominently indicated as the prepotency of the 

 cow in determining the sex of her offspring. As a rule it is seen that the numbers of 

 males and females are nearly alike, the latter being in an excess of 8.9 per cent; but 

 among the returns received many instances point emphatically to the predominating 

 influence of the cow herself. . . . 



"There were recorded 62 twin calves, or 1.72 per cent of the total number of 

 calves. Of these twins 27, or 45 per cent, were bull calves, and 33, or 55 jier cent, 

 heifers, and 16, or 26.7 iier cent, were free-martins. . . . 



"In regard to the bearing of twin calves the same evidence is seen of individual- 

 ity of the cow." 



Numerous interesting- instances of the preponderance of one or the 

 other sex and of twin births are cited to show the influence of individ- 

 uahty. 



Sheep-feeding experiments -with different nitrogenous feeding 

 stuffs with and without the addition of salt, E. Wolff, J. Mayer, 

 SiEGLiN, and Kreuzhage [Landtc. Jahrb., 25 {1896), i\o. 1, jyp. 175- 

 193). — These experiments, which are in continuation of work previously 

 reported (E. S. E., 4, \). 974), were made with 4 2-year-old grade Wiirt- 

 temberg sheep, weighing 52, 50, 49.5, and 47 kg., respectively. The 

 nitrogenous feeding stuft's compared were barley and field beans. The 

 beans and barley were usually fed dry, but in some cases were soaked 

 for 24 hours. They were added in increasing amounts to a basal ration 

 of meadow hay. In general each ration was fed with and without salt. 

 The experiment was divided into i)eriods of 32, 21, 28, 20, 37, and 25 

 days, respectively. 



Full data for each sheep for each i)eriod are given in tabular form. 

 The arrangement of tlie rations and the coctticients of digestibility for 

 each sheep for each ration are given in the following table: 



Co'vfficienta of digestihiUty with and tvithout salt. 



Hay with salt. 



Do 



Do 



Do 



Average. 



Hav without salt. 



"Do 



Do 



Do 



Average . 



Hay and barley without salt 



Hay aud beaus without salt 



Hay and barley with salt 



'Do 



Do 



Hay aud beans with salt 



Hay aud barley with salt 



Do 



Hay and beans wi th salt 



Hay. barley, and beaus with salt. 



Do 



Sheep 

 No 



Dry 

 matter. 



Organ- 

 ic sub- 

 stance. 



Per. ct. Per. ct. 

 56.32 I 58.77 



56,14 

 58.35 

 56.87 



58.48 

 60.51 

 59.10 



56.92 59.22 



58.71 

 60.44 

 57.37 

 59.28 



61.08 

 62.51 

 59.66 

 61.52 



Pro- 

 tein. 



Fat. 



I Nitro- 

 j gen free 

 extract. 



Per. ct. 

 50.94 

 49.92 

 53.31 

 52.82 



51.75 



Per. ct. 

 43.25 

 42.43 

 44.66 

 38.63 



42.24 



54.50 

 57.26 

 54.90 

 53.51 



58.95 



83.76 

 86.91 

 71.65 

 71.76 

 70.57 

 70.22 

 74.31 

 75.56 

 73.15 

 71.36 

 76.45 



61. 19 1 55. 04 



45.63 

 46.67 

 42.85 

 41.74 



Per. ct. 

 62.83 

 62.94 

 64.42 

 63.70 



63.47 



64.98 

 65.67 

 63. 50 

 65.55 



44.22 I 64.93 



86.12 

 87.03 

 73.94 

 73.91 

 72.47 

 71.80 

 76.31 

 77.23 

 75.14 

 72.88 

 78.28 



75.28 

 86.53 

 66.01 

 69.76 

 71.02 

 74.07 

 70.34 

 76. 80 

 77.61 

 73.26 

 81.98 



85. 24 

 100. 00 

 58.57 

 58.21 

 62. 13 

 51.30 

 62. 34 

 69.68 

 55.57 

 56.36 

 61.70 



91.68 

 93.37 

 80.55 

 80.36 

 79.81 

 76. 72 

 82. 97 

 83.89 

 81.74 

 77.67 

 84.23 



Crude 

 fiber. 



Ash. 



Per. ct. 

 55.89 

 55.20 

 57.72 

 55.38 



56.05 



58.28 

 60.66 

 56.12 

 59.03 



58.52 



18.34 

 40.07 

 59.39 

 56.27 

 49.11 

 60.32 

 54.94 

 49.42 

 53.72 

 57.62 

 55.91 



Per. ct. 

 21.66 

 22.87 

 27.77 

 25.27 



24.39 



22.02 

 30.08 

 24. 52 

 26.42 



25.76 



90.38 

 25.46 

 28.63 

 31.89 

 42.16 

 32.49 

 39.00 

 32.98 

 38.12 

 36.66 



