The Value of Thyroprotein in Starting, Growing and Laying Rations

Thyroprotein and Fat in Laying Diets

“…Under the conditions of these experiments, thyroprotein did not possess any nutritional significance in laying diets from the standpoint of egg production. Our results confirm the findings of Hutt and Gowe (1948), Hoffmann and Wheeler (1948), Godfrey (1949) and Berg and Bearse (1951). The effectiveness of dietary fat in maintaining body weight and improving feed efficiency was demonstrated.…”

Effect of Iodinated Casein and Thiouracil on the Performance of Laying Birds

“…The fact that significant improvement in shell thickness was obtained with two of the groups of birds but not with the other two, and the fact that the results obtained by Hutt and Gowe (1948) failed to show the improvement in shell quality recorded by co-workers (1946, 1947), Hoffman and Wheeler (1948), and of Godfrey (1949) indicate that the shell-secreting glands of different groups of birds may be affected differently by the feeding of thyroprotein. A comparison of the data secured in trials 1 and 2 would tend to support this hypothesis.…”

A Study of the Physiological Mechanisms Affecting Specific Gravity of Chicken Eggs

“…The data in Table 2 show that the specific gravity of the eggs from the thyroprotein and stilbestrol-treated groups increased slightly, while the specific gravity of the eggs from the groups treated with thiouracil, testosterone pro-pionate and cortisone, as well as those from the control group decreased in the order named. The slight increase in the specific gravity of the eggs of the protamone-fed birds is in agreement with the findings of Asmundson and Pinsky (1935), Gutteridge and Pratt (1946), Gutteridge and Novikoff (1947), Hoffmann and Wheeler (1948), Godfrey (1949), Berg and Bearse (1951) and Savage el al. The slight increase in the specific gravity of the eggs of the protamone-fed birds is in agreement with the findings of Asmundson and Pinsky (1935), Gutteridge and Pratt (1946), Gutteridge and Novikoff (1947), Hoffmann and Wheeler (1948), Godfrey (1949), Berg and Bearse (1951) and Savage el al.…”

“…Data obtained by Asmundson and Pinsky (1935), Gutteridge and Pratt (1946), Gutteridge and Novikoff (1947), Hoffmann and Wheeler (1948), Godfrey (1949), Berg and Bearse (1951), and Savage et al (1952), showed that feeding thyroprotein to laying hens improved shell quality as measured by the specific gravity of their eggs. Data obtained by Asmundson and Pinsky (1935), Gutteridge and Pratt (1946), Gutteridge and Novikoff (1947), Hoffmann and Wheeler (1948), Godfrey (1949), Berg and Bearse (1951), and Savage et al (1952), showed that feeding thyroprotein to laying hens improved shell quality as measured by the specific gravity of their eggs.…”