Feed and feeding efifects on organic acids and pH values in the chyme of the small intestine in horses

Three horses (approximately 190 kg BW) fitted with a permanent fistula at the end of the jejunum were used. To a control diet (1/3 hay, 2/3 mixed feed) one of two fat types (coconut fat or soybean oil) were added at 2 levels resulting in fat intakes of 0.1 g (control diet) to 0.5 or 1 g/kg BW 0.5 d, respectively. Each experimental period consisted of 2 weeks adaptation, 2 days of breath tests (before and hourly after the morning meal) and 5 days sampling of chyme. Crude fat, crude protein, concentrations of organic acids (SCFA, lactic acid), pH, and the minerals calcium, magnesium and phosphorus were determined in the chyme; H2 and CH4 in the expired air. The following results were obtained: 1) Fat feeding significantly (P < 0.01) stimulated (independent of amount or kind of fat) the jejunoileal flow of chyme. 2) Preileal fat digestibility increased significantly (P < 0.01) from 30-38% during the control periods to 73-80% (moderate fat intake) and 82-86% (high fat intake). Differences between the fat sources were not significant. 3) Fat addition resulted dose dependent in a reduction (P < 0.05) of lactic acid as well as SCFA concentrations of chyme (at 5th h postprandial). 4) Fat intake caused a reduction in the H2-concentration of the exhaled air (P < 0.05). Such effect was not found with the CH4-concentration, except the high soybean oil level which tended to reduce the concentration. 5) The addition of fat had no significant effects on preileal net absorption of magnesium and calcium, whilst the net secretion of phosphorus significantly increased (P < 0.01). 6) The preileal protein digestibility (control periods 48-53%) was slightly decreased (P < 0.05), due to the fat inclusion.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Feed and feeding efifects on organic acids and pH values in the chyme of the small intestine in horses

Cited by 3 publications

References 4 publications

The equine gastro-intestinal tract: An overview of the microbiota, disease and treatment

The equine gastro-intestinal tract: An overview of the microbiota, disease and treatment

Associative effects on total tract digestibility in horses fed different ratios of grass hay and whole oats

Preileal digestibility of coconut fat and soybean oil in horses and their influence on metabolites of microbial origin of the proximal digestive tract¹⁾

Contact Info

Product

Resources

About

Feed and feeding efifects on organic acids and pH values in the chyme of the small intestine in horses

Cited by 3 publications

References 4 publications

The equine gastro-intestinal tract: An overview of the microbiota, disease and treatment

The equine gastro-intestinal tract: An overview of the microbiota, disease and treatment

Associative effects on total tract digestibility in horses fed different ratios of grass hay and whole oats

Preileal digestibility of coconut fat and soybean oil in horses and their influence on metabolites of microbial origin of the proximal digestive tract1)

Contact Info

Product

Resources

About

Preileal digestibility of coconut fat and soybean oil in horses and their influence on metabolites of microbial origin of the proximal digestive tract¹⁾