R. H. Keffen

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Publications

Citations

174

H-Index

Active since

1984

Affiliations

Gauteng Department of Agriculture and Rural Development(Current)

University of Limpopo

Department of Agriculture, Land Reform and Rural Development

R. H. Keffen is an author at Gauteng Department of Agriculture and Rural Development specializing in veterinary science, animal physiology, and anesthesia.

Top concepts

Animal PhysiologyVeterinary ScienceBiologyFitnessMedicineFertilityAnesthesiaPhysiologyPharmacologyAnesthesiology

Publications per year

1984–1993

Publications

High mortality associated with megabacteriosis of proventriculus and gizzard in ostrich chicks

F. W. Huchzermeyer, M M Henton, R. H. Keffen · Veterinary Record · 1993 · 40 citations

Poultry Disease, Zoonotic Disease, Veterinary Science +6

SOME PHYSICAL REQUIREMENTS FOR OSTRICH EGG INCUBATION

M. J. F. Jarvis, R. H. Keffen, Charles E. Jarvis · Ostrich · 1985 · 39 citations

Animal Physiology, Biology, Reproductive Success +15

Breeding seasons and laying patterns of the southern African Ostrich <i>Struthio camelus</i>

M. J. F. Jarvis, Charles E. Jarvis, R. H. Keffen · Ibis · 1985 · 32 citations

Biology, Successive Peak, Reproductive Success +10

SOME MEASUREMENTS RELATING TO OSTRICH EGGS

R. H. Keffen, M. J. F. Jarvis · Ostrich · 1984 · 18 citations

Biology, Animal Performance, Surface Area +12

A preliminary investigation into the immobilising potential of a tiletamine/zolazepam mixture, metomidate, a metomidate and azaperone combination and medetomidine in ostriches (Struthio camelus)

J. Van Heerden, R. H. Keffen · Journal of the South African Veterinary Association · 1991 · 18 citations · Full text

Pharmacotherapy, Preliminary Investigation, Struthio Camelus +17

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