Life Sciences Commons^™

The Site Of Absorption Of Xanthophylls And Factors Affecting Pigmentation Of Chickens, Egg Yolks, And Products Made From Egg Yolks, Lloyd Henry Littlefield

Doctoral Dissertations

A total of four experiments were conducted to determine the location of the site of absorption of xanthophylls, to determine the relationship of egg yolk color produced by various feed xanthophylls to the color of mayonnaise, and to study the effect of the level of dietary cow manure, age, ambient temperature and feed consumption of xanthophyll pigmentation of hens and egg yolks.

Increases in the level of blood xanthophylls and visual pigmentation of xanthophyll depleted hens were used to measure the absorption of xanthophylls. Surgical removal of either the duodenum, jejunum, ileum or large intestine resulted in a slight but …

The Use Of Varying Levels Of Urea In Concentrates Fed To Dairy Cattle, John Roland Plummer

Doctoral Dissertations

Five experiments were conducted to investigate the use of concentrates that contained varying levels of urea for dairy cattle fed corn silage as the only forage.

Three experiments were conducted using 84 Holstein cows. Twenty-seven cows were used in Experiment I to compare a concentrate supplemented with soybean meal with a concentrate in which 2 percent urea (by weight) replaced a portion of the soybean meal on an equal nitrogen basis. Effects of frequency of feeding of concentrates containing urea were also studied. Results indicated that ration intake, body weight changes, milk production, milk protein, and milk SNF were not …

The Fishes Of The Big South Fork Of The Cumberland River System, Charles Edward Comiskey

Masters Theses

This thesis reports the results of a survey of the fishes of the Big South Fork of the Cumberland River system in Tennessee and Kentucky. This system represents the southeasterly extension of the Cumberland River system.

The survey was conducted from June, 1968, to September, 1969, with the majority of the collecting being made in the summer months of both years. A variety of collecting techniques were employed. These included ten and twenty-foot small mesh seine nets, thirty and sixty-foot bag seines, gill nets and sodium cyanide.

A total of sixty-four collections are included, sixty-one made by the author, and …