Chromium-51 in Food Metabolizability and Passage Rate Studies with the Ring-necked Pheasant ,

Differential Passage of Cellulose and “CrCl3 in Three Non-Domestic Gallinaceous Species ,

“…Unless later information shows that the present results are not applicable to species other than those tested here, relative digestions in the cecal and noncecal gut of pheasants (Phasianus colchicus) as reported by Duke (1967) also may be distorted.…”

“…The usefulness of 51 CrCl3 has been substantiated for mammals by Mautz (1971) who compared the "CrCU-ratio technique to the total-collection technique in whitetailed deer (Odocoileus virginianus). However, 61 CrCl 3 used in digestive studies of gallinaceous birds resulted in only a 90 percent recovery of the isotope (Duke, 1968;Inman, 1968). Therefore, in birds the ratio technique dry matter metabolizability coefficients did not equal those coefficients calculated by the total collection technique.…”

Passage rate through the anterior digestive tract of broiler chickens fed on diets with ground and whole wheat

“…However, marker can also be detected in caecal contents up to 72 h after feeding (Duke et al, 1968). The passage time is affected by composition of the feed.…”

Alimentary Canal: Anatomy, Regulation of Feeding, and Motility

“…Radiography may also be used, and via this technique, the rate of passage from the mouth through specific portions of the tract can be observed. In chickens and turkeys, markers first appear in the excreta within about 2-2.5 hr, and most of the marker from a marked meal can be recovered within 24 hr (Dansky and Hill, 1952;Tuckey et al, 1958); however, a marker can be detected in the cecal excreta of turkeys for up to 72 hrs after feeding (Duke et al, 1968). Using radioactive barium, Imabayashi et al (1956) found that about half of the label was excreted from chickens within 4-5 hr.…”

“…Factors that affect the overall motility of the tract also influence the rate of food passage. Diseases that depress digestive function slow passage rate (Aylott et al, 1968;Duke et al, 1969) and the addition of antibiotics to the feed may also slow it (Hillerman et al, 1953). Increasing fat levels in a diet progressively decrease passage rate, and the slower passage may improve the digestibility of other nutrients in the diet (Larbier et al, 1977;Mateos, 1982).…”