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Delayed growth in two German shepherd dog littermates with normal serum concentrations of growth hormone, thyroxine,
J F Randolph1, C L Miller, J F Cummings
1Department of Clinical Sciences, New York State College of Veterinary Medicine, Cornell University, Ithaca.
Abstract:
Four German Shepherd Dogs from a litter of 10 were evaluated because of postnatal onset of proportionate growth stunting that clinically resembled well-documented hypopituitary dwarfism in that breed. Although 2 pups had histologic evidence of hypopituitarism, the remaining 2 pups had normal serum growth hormone concentration and adrenocorticotropin secretory capability, and normal adrenal function test and thyroid function study results. Furthermore, the initially stunted German Shepherd Dogs grew at a steady rate until at 1 year, body weight and shoulder height approximated normal measurements. Seemingly, delayed growth in these pups may represent one end of a clinical spectrum associated with hypopituitarism in German Shepherd Dogs.