THE PERFORMANCE OF HEIFERS GOT BY ARTIFICIAL INSEMINATION

[1] JOHANSSON I, 1952, P BRIT SOC ANIM PROD, P79

[2] PERRY EJ, 1949, 12TH P INT DAIR C, V1, P639

[3] ROBERTSON A., 1951, EMPIRE JOUR EXPTL AGRIC, V19, P113

[4] BREED STRUCTURE IN THE PEDIGREE AYRSHIRE CATTLE POPULATION IN GREAT-BRITAIN [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1953, 43 (01) : 123 - 130

[5] 1951, NZ DAIRY BOARD ANN R

[1] JOHANSSON I, 1952, P BRIT SOC ANIM PROD, P79

[2] PERRY EJ, 1949, 12TH P INT DAIR C, V1, P639

[3] ROBERTSON A., 1951, EMPIRE JOUR EXPTL AGRIC, V19, P113

[4] BREED STRUCTURE IN THE PEDIGREE AYRSHIRE CATTLE POPULATION IN GREAT-BRITAIN [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1953, 43 (01) : 123 - 130

[5] 1951, NZ DAIRY BOARD ANN R