SOME FACTORS AFFECTING AGE AT PUBERTY IN HOLSTEIN-FRIESIAN HEIFERS

[11] Sexual development in small and large types of swine [J]. ANATOMICAL RECORD, 1943, 85 (04): : 387 - 400

[12] REID JT, 1951, J DAIRY SCI, V34, P510

[13] RICE VA, 1951, BREEDING IMPROVEMENT

[14] Riddle O, 1931, AM J PHYSIOL, V97, P581

[15] ROBERTSON G. L., 1951, JOUR ANIMAL SCI, V10, P647

[16] SNEDECOR GW, 1946, STATISTICAL METHODS

[17] SQUIERS CD, 1952, MO AGR EXPT STA RES, V494

[18] UPP CW, 1927, 67 OKL AGR EXP STA C

[19] VARIATION IN PUBERTY PHENOMENA IN INBRED GILTS [J]. JOURNAL OF ANIMAL SCIENCE, 1951, 10 (02) : 479 - 493

[20] THE EFFECT OF SEASON OF BIRTH ON SEXUAL DEVELOPMENT IN GILTS [J]. JOURNAL OF ANIMAL SCIENCE, 1950, 9 (03) : 277 - 280

[11] Sexual development in small and large types of swine [J]. ANATOMICAL RECORD, 1943, 85 (04): : 387 - 400

[12] REID JT, 1951, J DAIRY SCI, V34, P510

[13] RICE VA, 1951, BREEDING IMPROVEMENT

[14] Riddle O, 1931, AM J PHYSIOL, V97, P581

[15] ROBERTSON G. L., 1951, JOUR ANIMAL SCI, V10, P647

[16] SNEDECOR GW, 1946, STATISTICAL METHODS

[17] SQUIERS CD, 1952, MO AGR EXPT STA RES, V494

[18] UPP CW, 1927, 67 OKL AGR EXP STA C

[19] VARIATION IN PUBERTY PHENOMENA IN INBRED GILTS [J]. JOURNAL OF ANIMAL SCIENCE, 1951, 10 (02) : 479 - 493

[20] THE EFFECT OF SEASON OF BIRTH ON SEXUAL DEVELOPMENT IN GILTS [J]. JOURNAL OF ANIMAL SCIENCE, 1950, 9 (03) : 277 - 280