The Relationship of Serum Protein Bound Iodine Levels to Rates of Gain in Beef Cattle

Thyroid function as measured by131iodine release rate, weight and RNA/DNA in growing lambs, and its relation to growth rate

“…The preliminary investigations carried out by Kunkel et al (1953) suggested a curvilinear relation between rate of gain and serum protein-bound iodine concentration in beef calves. However, later and more extensive studies have only verified this correlation in a small number of experiments (Kunkel et al, 1957).…”

“…In sheep and cattle, no definite conclusions can be drawn as to the value of such treatments, there being instances where iodinated materials and depressant drugs have both increased and decreased growth performance or shown little effect Beeson, 1948,1950;Kline, Ensminger, Cunha, Heinemann and Ham, 1949;Schultze, Hathaway and Loeffel, 1950;Barrick, Andrews and Beeson, 1950;Kirton, Cresswell, Cockrem and Butler, 1959;Matsushima, Mukhtar, Clanton and Payne, 1960). Correlations between growth rate and blood protein-bound iodine concentration have been recognized in cattle (Kunkel, Colby and Lyman, 1953;Kunkel, Green, Riggs, Smith and Myrtis, 1957) and in the pig (Gawienowski, Mayer and Lasley, 1955). Correlations between growth rate and blood protein-bound iodine concentration have been recognized in cattle (Kunkel, Colby and Lyman, 1953;Kunkel, Green, Riggs, Smith and Myrtis, 1957) and in the pig (Gawienowski, Mayer and Lasley, 1955).…”

Genetic Aspect of Free Plasma Amino Acids in Poultry

“…Genetic deviants are known to affect the structure of proteins and of enzymes that are related to the productive efficiency in birds (Matsumoto et al, 1960;Stutts et al, 1956;Wilcox, 1963Wilcox, , 1966Wilcox etal, 1963) in swine (Combs et al, 1959) and in cattle (Ashton, I960,1961;Ashton and Fallon, 1962;Ashton et al, 1964;Kunkel et al, 1956). The free plasma amino acid level may also prove to be a particularly accurate predictor of performance.…”

A note on relationship of plasma thyroxine and triiodothyronine rate to body weight in growing male camels

“…Several studies have been undertaken to determine the role of physiological changes in thyroid activity in meat producing species (Kunkel, Colby and Lyman, 1953;Draper, Falconer and Lamming, 1968;Bobek, Kacinska and Zapletal, 1980;Garrett, 1980). Several studies have been undertaken to determine the role of physiological changes in thyroid activity in meat producing species (Kunkel, Colby and Lyman, 1953;Draper, Falconer and Lamming, 1968;Bobek, Kacinska and Zapletal, 1980;Garrett, 1980).…”