BIOMETRIC STUDY OF FORM IN THE HOLSTEIN-FRIESIAN COW

1 Mean values, standard deviations and variation coefficients of twelve physical characters in three hundred Holstein-Friesian cows are obtained, and the frequency curve of the head length is discussed.2 The existence of the positive correlation between five pairs of characters is shown.3 The regression and its equation between withers hight and chest depth, rump length and hip width are presented.4 It is observed that there is nearly a definite proportion between each side of the trapezoid form in the hindquarters.In conclusion the writer desires to express his sincere thanks to Professors R. Iwazumi and T. Kubo, under whose direction this work was done, and also Mr. S. Kugimoto and Mr. Y. Habu for their kind advice in selecting the material.