Effects of fibre on digestibility and passage time in Callithricidae

Abstract

275 SummaryThe effects of fibre in a pelleted diet on food intake, digestibility of crude fibre, dry matter and energy, on passage time and consistency of faeces were studied in 2 species of Callithricidae, Ca/lilhrix jacchus and Saguinus juscicollis. Coarse cellulose, microcellulose, wheat bran and shrimp meal (chitin = crude fibre) were tested in diets containing 2, 4 and 6% total crude fibre, respectively. Digestibility and passage time were determined by inclusion of 0'5% Cr203 in the diet.Both celluloses had little influence on the digestibility of energy and dry matter. Digestibility of crude fibre was very low. Wheat bran led to evident depression of energy and dry matter digestibility. High digestibility of crude fibre occurred at the higher levels of inclusion in the diet. Shrimp meal was highly digested with little innuence on digestibility of energy and dry matter, indicating considerable degradation of chitin. Wheat bran showed a marked effect, while microcellulose had no effect on passage time, consistency and volume of faeces.

Review on testicular development, structure, function, and regulation in common marmoset

“…Excretion of testosterone metabolites (accounting for 20% of the dose administered) via feces in marmosets is rapid, with maximal levels at 4 hr after injection, as compared to 22 hr in cynomolgus monkeys and 26 hr in chimpanzees. Quick fecal excretion of testosterone metabolites in marmosets is consistent with the short gut passage time of 45 hr in this and other New World primates (Krombach et al, 1984). The main metabolite in the urine and fecal samples in marmosets is androsterone.…”

“…For example, one of the most common diseases in captive marmosets is diarrhea (Abbott et al, 2003; Ludlage and Mansfield, 2003). Marmosets have a relatively short gut passage time (4–8 hr) as compared to many other species (Krombach et al, 1984; Mohle et al, 2002). Frequently occurring diarrhea and short gut passage time may affect absorption and metabolism of a test chemical in the gastrointestinal tract.…”

Composition and Nutritional Characteristics of Fungi Consumed by Callimico goeldii in Pando, Bolivia

“…Though this process has been considered only in the context of digesting the chitin in insect exoskeletons, it is reasonable to think that it would be similarly beneficial for the processing of chitin in fungi. Researchers have not looked for the enzyme chitinase, needed to digest chitin, in Callimico goeldii, but assume that all insectivorous mammals including callitrichines (Cornelius et al, 1975;Jeuniaux, 1961Jeuniaux, , 1963Kay and Shein, 1979;Krombach et al, 1984) synthesize it. In fact, Saguinus fuscicollis and Callitrhix jacchus (pooled data) digested chitin more efficiently than crude fiber from plants or pure cellulose (Krombach et al, 1984).…”

Effect of dietary fiber concentration on apparent digestibility and digesta passage in non-human primates. I. Ruffed lemurs (Varecia variegata variegataandV. v. rubra)

“…Even though nearly 80% of the plant cell wall is lost in fecal material, one should not overlook the contributions of this indigestible fraction of the diet. Often considered a "negative feed factor," the beneficial role of plant fiber regarding satiety, fecal consistency, and overall gastrointestinal health in primates [Morin et al, 1978;Newberne and Hayes, 1979;Krombach et al, 1984] including humans [Cummings, 1978], has been well documented.…”