Effectiveness of Dietary Supplements in Increasing Hatchability of Eggs and Viability of Progeny of Hens Fed a Diet Containing a High Level of Soybean Oil Meal

An Evaluation of Dried Distillers Feedstuffs Fed to Chickens Throughout Their Life Cycle

“…The mortality of Fi chicks was much less than that reported by Bird et al (1946). The factor apparently obtained from the litter which helped hatchability may have also helped livability of the chicks when brooded under unfavorable conditions.…”

“…Bird et al (1946) have observed an increase in hatchability when birds were fed and managed much like ours. They suggested that the birds having access to the droppings might be responsible for the change.…”

Renal pathology of the fowl — A review

“…Trnoska (1962) believed baby chick nephropathy to be due to vitamin A deficiency, followed by secondary infection but Bird et al (1946), who had also suspected avitaminosis-A, found the vitamin A content of the livers to be noimal. Inoue et al (1967) blamed an "abnormal metabolism of uric acid during the embryonic stage", and Bird et al (1946) saw outbreaks with as much as 38% mortality among chicks from dams that were fed 30% soya bean oil as the sole source of protein.…”

A Note on the “Animal Protein Factor” and Feed Efficiency

“…Evidence is available (Bird, Rubin, Whitson and Haynes, 1946;Wiese, Petersen and Lampman, 1948) that supplementation of an all vegetable breeder or growing ration with "the animal protein factor" will result in higher hatchability, increased chick growth and lower mortality in the first few weeks after hatching.…”