NDLI: Changes in Concentrations of Tannins, Total Phenolics, Crude Protein, and in vitro Digestibility of Browse Due to Mastication and Insalivation by Cattle

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Changes in Concentrations of Tannins, Total Phenolics, Crude Protein, and in vitro Digestibility of Browse Due to Mastication and Insalivation by Cattle

Content Provider	Semantic Scholar
Author	Burritt, Elizabeth A. Malechek, John C. Provenza, Frederick D.
Copyright Year	1987
Abstract	The feasibility of using esophegesl extras to monitor dktuy tsnnin levek vves studkd using 4 &rub specks (Purshia tri&utata, Qucrcusgarnbe& Cwcoca~~usmou&us end Acu gmudideutoha). Browse sumpks were hsnd-harvested in hte summer. Half of the sumple for each specks ~8s fed to esophegeslly fktuluted attk, wbik the other belf served M sn unnustiated control. Extruaa and control umpks were rnrlysed for tote1 phenolks (Folin-Denk), tannin using 3 methods (venillin-HCI, prosnthocymidins, end astringency), crude protein, end in vitro orgsnk matter digestibility (IVOMD). Tannin levels were reduced 10% to 60% in extras, depending on pknt specks end metbod of tannin snelysk. Changes in the nutrition81 constituents of extras were limited but oak extrusn was higher in IVOMD than oek control sumpks. Tannins may hsve bound to pknt or snlivsry proteins or to mucousmembrenes in the mouth during msstiation end inalivetion. Our results indiate that esophagal extras is not suitable for monitoring dietary tsnnin Ievek.
Starting Page	409
Ending Page	411
Page Count	3
File Format	PDF HTM / HTML
DOI	10.2307/3899598
Volume Number	40
Alternate Webpage(s)	https://journals.uair.arizona.edu/index.php/jrm/article/download/8163/7775
Alternate Webpage(s)	https://doi.org/10.2307/3899598
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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