PLASMA PROTEIN-BOUND IODINE LEVELS IN CAMELS

Abstract
Determination of plasma protein-bound iodine (PBI) has been found to be a reliable qualitative index of thyroid activity (Frankel, Reitman & Sonnenwrith, 1963) and, if carried out under correct laboratory conditions, it is nearly as good an index of thyroid activity as total thyroid secretion rate determined by the use of [131I]l-thyroxine in large animals (Singh, Setia, Dixit & Agarwal, 1970). The PBI levels of large domesticated animals such as cattle (Thompson, Johnston, Breidenstein, Guidry, Banerjee & Burnett, 1963; Gill, Rattan, Singh & Anantakrishanan, 1966) and buffaloes (Singh et al. 1970) have been reported from time to time as an index of thyroid activity. The authors failed to find any such report on camels and have therefore investigated the normal PBI values of single-humped Indian camels of various ages. As thyroid activity is known to be influenced by climatic variations, the determinations were performed in two seasons:

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