FACTORS ASSOCIATED WITH THE DURATION OF GESTATION IN DAIRY CATTLE

[41] A STUDY OF THE GESTATION PERIODS OF 5 BREEDS OF CATTLE [J]. JOURNAL OF ANIMAL SCIENCE, 1945, 4 (01) : 13 - 14

[42] LONG JF, 1948, GENETICS, V33, P618

[43] Lush J. L., 1945, ANIMAL BREEDING PLAN

[44] MARVAL A. J., 1938, Farmer and Stock Breeder, V52, P973

[45] McCandlish A. C., 1922, J DAIRY SCI, V5, P301

[46] OGRIZEK A., 1940, Poljoprivredna Nauchno Smotra, V2, P54

[47] OGRIZEK A., 1939, Poljoprivredna Nauchno Smotra, V1, P22

[48] Paim H. D., 1944, REV AGRIC [PIRACICABA], V19, P333

[49] Rife David C., 1943, JOUR ANIMAL SCI, V2, P50

[50] SNEDECOR GW, 1946, STATISTICAL METHODS

[41] A STUDY OF THE GESTATION PERIODS OF 5 BREEDS OF CATTLE [J]. JOURNAL OF ANIMAL SCIENCE, 1945, 4 (01) : 13 - 14

[42] LONG JF, 1948, GENETICS, V33, P618

[43] Lush J. L., 1945, ANIMAL BREEDING PLAN

[44] MARVAL A. J., 1938, Farmer and Stock Breeder, V52, P973

[45] McCandlish A. C., 1922, J DAIRY SCI, V5, P301

[46] OGRIZEK A., 1940, Poljoprivredna Nauchno Smotra, V2, P54

[47] OGRIZEK A., 1939, Poljoprivredna Nauchno Smotra, V1, P22

[48] Paim H. D., 1944, REV AGRIC [PIRACICABA], V19, P333

[49] Rife David C., 1943, JOUR ANIMAL SCI, V2, P50

[50] SNEDECOR GW, 1946, STATISTICAL METHODS