J. A. Laing

Pregnancy diagnosis in cows; changes in milk progesterone concentration during the oestrous cycle and pregnancy measured by a rapid radioimmunoassay

R. B. Heap, Merle Gwyn, J. A. Laing et al. · The Journal of Agricultural Science · 1973 · 141 citations

Veterinary Medicine, Animal Sciences, Endocrinology +14

Pregnancy Diagnosis in the Cow from Milk Progesterone Concentration

R. B. Heap, R.J. Holdsworth, John E. Gadsby et al. · British Veterinary Journal · 1976 · 127 citations

Veterinary Medicine, Dairy Science, Obstetrics +14

The Concentration of Progesterone in the Milk of Cows During the Reproductive Cycle

J. A. Laing, R. B. Heap · British Veterinary Journal · 1971 · 107 citations

Agriculture, Dairy Science, Endocrinology +10

Infertility in Cattle Associated with Death of Ova at Early Stages After Fertilisation

J. A. Laing · Journal of Comparative Pathology and Therapeutics · 1949 · 35 citations

Veterinary Medicine, Animal Sciences, Veterinary Pathology +8

Observations On the Characteristics of the Semen in Relation to Fertility in the Bull

J. A. Laing · The Journal of Agricultural Science · 1945 · 29 citations

Medicine, Animal Sciences, Fertility +11