A STUDY OF THE REPRODUCTIVE PERFORMANCE OF A PUREBRED HEREFORD HERD

[11] JOHNSON MB, 1930, ND AGR EXP STA B, V237

[12] LASLEY JF, 1943, MO AGR EXP STA RES B, V376

[13] GENETIC VARIATION IN SERVICES PER CONCEPTION AND CALVING INTERVAL IN DAIRY CATTLE [J]. JOURNAL OF ANIMAL SCIENCE, 1954, 13 (01) : 81 - 88

[14] Lush J. L., 1948, GENETICS POPULATIONS

[15] MERCIER E, 1946, CORNELL VET, V36, P301

[16] MORGAN RF, 1938, NEB AGR EXP STA RES, V104

[17] REPEATABILITY, HERITABILITY AND THE EFFECT OF LEVEL OF MILK PRODUCTION ON THE OCCURRENCE OF 1ST ESTRUS AFTER CALVING IN DAIRY CATTLE [J]. JOURNAL OF ANIMAL SCIENCE, 1953, 12 (01) : 10 - 14

[18] PREDICTABILITY OF BREEDING EFFICIENCY IN DAIRY CATTLE [J]. JOURNAL OF DAIRY SCIENCE, 1950, 33 (10) : 721 - 724

[19] Phillips Ralph W., 1943, AMER JOUR VET RES, V4, P115

[20] PHILLIPS RW, 1939, 1939 YB AGR, P476

[11] JOHNSON MB, 1930, ND AGR EXP STA B, V237

[12] LASLEY JF, 1943, MO AGR EXP STA RES B, V376

[13] GENETIC VARIATION IN SERVICES PER CONCEPTION AND CALVING INTERVAL IN DAIRY CATTLE [J]. JOURNAL OF ANIMAL SCIENCE, 1954, 13 (01) : 81 - 88

[14] Lush J. L., 1948, GENETICS POPULATIONS

[15] MERCIER E, 1946, CORNELL VET, V36, P301

[16] MORGAN RF, 1938, NEB AGR EXP STA RES, V104

[17] REPEATABILITY, HERITABILITY AND THE EFFECT OF LEVEL OF MILK PRODUCTION ON THE OCCURRENCE OF 1ST ESTRUS AFTER CALVING IN DAIRY CATTLE [J]. JOURNAL OF ANIMAL SCIENCE, 1953, 12 (01) : 10 - 14

[18] PREDICTABILITY OF BREEDING EFFICIENCY IN DAIRY CATTLE [J]. JOURNAL OF DAIRY SCIENCE, 1950, 33 (10) : 721 - 724

[19] Phillips Ralph W., 1943, AMER JOUR VET RES, V4, P115

[20] PHILLIPS RW, 1939, 1939 YB AGR, P476