PERFORMANCE OF MORGAN HORSES UNDER SADDLE 14. 
Horses with a long stride at the trot (11.0 feet or more) averaged 2 
minutes faster than those with a short stride (less than 9 feet), as 
shown in table 5. None of the horses with short strides made fast 
time and none with long strides made very slow time. Canfield’s 
progeny showed up better than those of the other sires, 62 percent of 
his offspring having long strides and making fast time. None of the 
progeny of Mansfield, Delmont, Hudson, or Laddie had a stride of 
more than 10 feet or trotted a mile in less than 5 minutes. 
The sex of horses (table 11) and the slope of croup (top line of 
croup) (table 10) appeared to have some association with speed, 
although for neither of these characters was the average difference 
quite significant. Mares and geldings trotted at about the same speed, 
but the six stallions were on the average 0.6 minute slower. A medium 
slope of croup seemed to be the most favorable to speed at the trot, 
although the results were not consistent. 
TaBLe 11.—Association of sex and performance and analyses of 
varrvance | 
AVERAGE PERFORMANCE 
: 3 Length of Score 
Time required to— ee An Bente Pi 
fatigue 
at end 
Sex Horses Guiek a 
Walk trot: ai 1i1e35= - 11.35- 
amile} mile mile Walk | Trot mile 
course test ? 
Min- | Min- 
Number| utes utes |Minutes| Feet Feet 
SGalliqn22se 222s se Fey G50 RA OS) SS i 9.1 AL 7 
Celdinge Sows se eas oe PRO) 1) ALS = | MOG KI) WO 4.3 
I Wey ce eee res ee IS AA NO HS} AO) a yh 1h); 4.0 
Total or average _____ 687) 15: J 5.3 | 109. 1 5a LOE O 4.2 
ANALYSES OF VARIANCE 
Degrees 
Source of variance of free- Mean squares 3 
dom 
Between sexes_2_-2 _- = 2 OS On| ele OG EDO OR NO PHE NES GS) Sil De 
Wathimesexessee. at tes Vile (ayo) | dl PE Pole OOS 2 . 98 aoe 
WoOtala gis EE 6 ogee OA aa [tO ih lV Al A ae i RG Ba 
1 Riders’ scores for ease of handling, performance of gait, and ease of gait to 
riders were omitted from the table because none of them were found to be signifi- 
cantly associated with sex (table 18). 
2 1=extremely exhausted, 2=exhausted, 8=marked signs of fatigue, 4=slight 
signs of fatigue, 5=no sign of fatigue. 
$ *— Significant. 
841794°—50-~—3 
