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Related Concept Videos

Protein Digestion01:02

Protein Digestion

Protein digestion begins in the stomach, where the highly acidic environment can easily disrupt protein structure by exposing the peptide bonds of polypeptide chains. After polypeptide chains are broken into individual amino acids by a series of digestive enzymes, the amino acids are transported to the liver via the bloodstream to produce energy.
What is Monogastric Digestion?01:50

What is Monogastric Digestion?

The human body contains a monogastric digestive system. In a monogastric digestive system, the stomach only contains one chamber in which it digests food. Several other animal species also have monogastric digestive systems, including pigs, horses, dogs, and birds. This chapter, however, focuses on the human digestive system.
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Lipid Digestion

Lipids are large molecules that are generally not water-soluble. Since most of the digestive enzymes in the human body are water-based, there are specific steps the body must take to break down lipids and make them available for use.
Carbohydrate Digestion00:57

Carbohydrate Digestion

Carbohydrate digestion and metabolism break down simple and complex carbohydrates from food into saccharides (i.e., sugars) for the body to use as energy. Carbohydrate digestion starts in the mouth during mastication, or chewing. The masticated carbohydrates remain intact in the stomach. Digestion resumes in the duodenum of the small intestine, where pancreatic alpha-amylase and brush border enzymes of the microvilli convert complex carbohydrates to monosaccharides. Finally, the monosaccharides...

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Fiber digestibility by black lemurs (Eulemur macaco macaco).

Debra A Schmidt1, Monty S Kerley, Ingrid J Porton

  • 1University of Missouri, 111 Animal Sciences Research Center, Columbia, Missouri 65211, USA.

Journal of Zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians
|February 28, 2007
PubMed
Summary

Black lemurs can digest fiber, but their ability to extract energy from neutral detergent fiber (NDF) is limited. Diets high in NDF did not significantly improve fiber digestion in these generalist feeders.

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Area of Science:

  • Primate nutrition
  • Digestive physiology
  • Animal science

Background:

  • Black lemurs (Eulemur macaco) are generalist feeders with seasonal dietary variations.
  • A hypothesis suggests black lemurs can utilize neutral detergent fiber (NDF) via hindgut fermentation.
  • Captive diets often lack sufficient NDF, impacting nutritional intake.

Purpose of the Study:

  • To investigate the digestibility of neutral detergent fiber (NDF) in black lemurs.
  • To assess the impact of different fiber forms and concentrations on NDF digestibility.
  • To evaluate the potential of NDF as an energy source for black lemurs.

Main Methods:

  • Digestibility trials were conducted on 14 black lemurs fed four manufactured diets.
  • Diets varied in NDF content (27-53%) and form (biscuit, gel matrix with soybean hulls or corncobs).
  • Dry matter and NDF digestibility were measured for each diet.

Main Results:

  • Dry matter digestibility significantly differed across all tested diets.
  • NDF digestibility was highest in ground biscuits within a gel matrix.
  • High-fiber gel diets increased NDF concentration but showed the lowest NDF digestibility.

Conclusions:

  • Black lemurs exhibit limited capacity for digesting high concentrations of neutral detergent fiber.
  • While some fiber sources are more digestible, NDF is not a primary energy source for this species.
  • Captive diets may need careful formulation to balance nutrient and fiber content for optimal lemur health.