The Effect of Vitamin D Intake of the Hen on the Bone Calcification of the Chick

The Comparative Efficiency of Vitamin D from Cod Liver Oil and Irradiated Cholesterol for Laying Birds

“…It will be noted that the bone ash values at two weeks were more clear-cut in this respect than the four-week results. Similar observations have been noted by Murphy, Hunter, and Knandel (1936a). The bone ash values also suggest that the vitamin D stored in the chick was the same when equivalent rat units from either cod liver oil or irradiated cholesterol were fed to the parent stock.…”

Intestinal Phytase and Alkaline Phosphatase of Chicks: Influence of Dietary Calcium, Inorganic and Phytate Phosphorus and Vitamin D3

“…The data in Table 1 also show that normal growth and calcification was achieved in chicks without vitamin D 3 supplementation when the diets contained 1% of Ca and 0.48% of Pi. Murphy et al (1936) obtained evidence which showed that vitamin D is transmitted in a quantitative way from the hen to the chick. High vitamin D intake by the parent stock was reflected in high bone ash of chicks fed no vitamin D from 1 to 4 weeks of age.…”

Growth and Calcification of Bronze Turkey Poults from Hens Fed Different Levels of Vitamin D

“…While the effect on chicks of the level of vitamin D in the hens' ration has received attention from experimental workers, no similar data with poults are avail- related to the level of cod liver oil in the ration of the breeding hens. Murphy, Hunter, and Knandel (1936) reported that at two weeks of age the bone ash in the chicks was influenced by the vitamin D of the hens' ration, and Bethke, Record, Wilder, and Kick (1936) reported similar results at four weeks. The purpose of the experiment reported here was to determine the influence of the level of cod liver oil in the ration of Bronze turkey breeders on growth and calcification in their poults.…”