Author

J.A. Spence

Observed names: J A Spence, J. A. SPENCE, J. A. Spence, J.A. SPENCE, JOHN A. SPENCE, John A. Spence, Spence, J. A.

Observed institutions: Rothamsted Research, University of Bristol, University of the West Indies, Moredun Research Institute, University of Edinburgh

OpenAlex ID: A5112371262

Broken mouth (premature incisor loss) in sheep: The pathogenesis of periodontal disease

1980 · J.A. Spence, G.U. Aitchison, et al. · Journal of Comparative Pathology · 55

Sulphur‐induced polioencephalomalacia in lambs

1996 · J. C. Low, P. R. Scott, et al. · Veterinary Record · 52

Effect of Moisture Supply, Root Temperature, and Growth Regulators on Photosynthesis of Isolated Rooted Leaves of Sweet Potato (Ipomoea batatas)

1972 · J. A. SPENCE, E. C. HUMPHRIES · Annals of Botany · 47

A sequential study of the skeletal abnormalities which develop in rats given a small dietary supplement of ammonium tetrathiomolybdate

1980 · J.A. Spence, N.F. Suttle, et al. · Journal of Comparative Pathology · 37

Use of Photoperiod Response to Change Plant Design1

1972 · J. A. Spence, S. J. A. Williams · Crop Science · 32

A longitudinal study of the cultivable subgingival anaerobic bacteria isolated from sheep during the development of broken mouth periodontitis

1990 · J. McCOURTIE, I. R. POXTON, et al. · Journal of Medical Microbiology · 25

Dental disease in hill sheep: An abattoir survey

1984 · G.U. Aitchison, J.A. Spence · Journal of Comparative Pathology · 25

Black‐pod disease of cocoa

1961 · J. A. SPENCE · Annals of Applied Biology · 19

A possible gene source for early, day-length neutral pigeon peas, Cajanus cajan (L.) Millsp.

1978 · R. P. Ariyanayagam, J. A. Spence · Euphytica · 18

Development of periodontal disease in a single flock of sheep: clinical signs, morphology of subgingival plaque and influence of antimicrobial agents

1988 · J.A. SPENCE, G.U. AITCHISON, et al. · Research in Veterinary Science · 16

The effect of periodontal disease on sulphated glycosylaminoglycan distribution in the sheep periodontium

1992 · J. Kirkham, C. Robinson, et al. · Archives of Oral Biology · 15

Functional morphology of the periodontal ligament in the incisor region of the sheep

1978 · J.A. Spence · Research in Veterinary Science · 15

Ostertagia circumcincta infection of lambs, the effect of different intakes of larvae on skeletal development

1981 · R.L. Coop, A.R. Sykes, et al. · Journal of Comparative Pathology · 14

Histopathological survey of aborted bovine fetuses in Scotland with special reference to Neospora caninum.

2000 · A Schock, D Buxton, et al. · PubMed · 13

Mandibular bone in ageing sheep

1982 · P.J. Atkinson, J.A. Spence, et al. · Journal of Comparative Pathology · 13

Preliminary study of the anaerobic bacteria isolated from subgingival plaque from sheep

1989 · Jane McCourtie, Ian R. Poxton, et al. · Veterinary Microbiology · 12

Distribution of dry matter and mineral nutrients in tubers of two cultivars of Dioscorea alata L.

1971 · Ferguson, T. U., Haynes, P. H., et al. · Tropical Agriculture · 12

Probable Mechanism of Resistance of Varieties of Cocoa to Black Pod Disease caused by Phytophthora palmivora (Butl.) Butl.

1961 · JOHN A. SPENCE · Nature · 12

Morphology and radio-opaque lines in bones of foetal lambs: The effects of maternal nutrition

1982 · J.A. Spence, D.J. Mellor, et al. · Journal of Comparative Pathology · 11

A laboratory method for studying tooth mobility of the mandibular central incisor of the sheep

1987 · B.J. MOXHAM, B.K.B. BERKOVITZ, et al. · Research in Veterinary Science · 10

Plant Nutrient Deficiencies and Related Tissue Composition of the Sweet Potato1

1967 · J. A. Spence, N. Ahmad · Agronomy Journal · 10

Effect of periodontal disease (“broken mouth”) on the distribution of matrix macromolecules in the sheep periodontium

1991 · J. Kirkham, C. Robinson, et al. · Archives of Oral Biology · 9

Skeletal and blood biochemical characteristics of sheep during growth and breeding: A comparison of flocks with and without broken mouth

1985 · J.A. Spence, A.R. Sykes, et al. · Journal of Comparative Pathology · 6

Rooted leaves for physiological experiments

1972 · J. A. Spence, R. W. Soffe, et al. · Planta · 5

Black‐pod disease of cocoa

1961 · J. A. SPENCE · Annals of Applied Biology · 5

Works count: 31

Citation count: 502

H-index: 13

I10-index: 21