Abstract
Ileal fluxes, urinary losses and taurine balance were determined in six taurine-replete and four taurine-depleted cats. Digesta samples collected at the terminal ileum were used to assess ileal flux of taurine. Four diets were tested: a commercial diet in two forms (heat-processed and frozen) and two purified diets containing either 1225 or 0 mg taurine/kg diet. Five-day balance trials were performed on d 3-7 with measurement of food intake and taurine in urine and ileal digesta. Substantially greater quantities of total taurine (free + bound) were found in ileal digesta from cats fed the heat- processed rather than the frozen preserved diet (205 vs. 101% of the average daily taurine intake, respectively), with calculated taurine balances of -609 vs. -212 μmol/d, respectively. The quantity of taurine in ileal digesta from taurine-replete cats fed the 1225 or 0 mg taurine/kg purified diets was not significantly different, indicating that taurine found at the terminal ileum is mostly of endogenous origin. Taurine-depleted cats had significantly lower amounts of taurine in ileal digesta, with a taurine balance of -77 μmol/d. These results demonstrate that a heat-processed diet causes substantially greater losses of taurine from the intestine than does a frozen diet. This phenomenon may explain the inability of some heat-processed diets to maintain normal plasma taurine concentrations in cats.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 553-559 |
| Number of pages | 7 |
| Journal | Journal of Nutrition |
| Volume | 122 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jan 1 1992 |
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Keywords
- cats
- heat processing
- ileal digesta taurine
- taurine
- taurine balance
ASJC Scopus subject areas
- Medicine (miscellaneous)
- Nutrition and Dietetics
Cite this
Taurine balance is different in cats fed purified and commercial diets. / Hickman, M. A.; Rogers, Quinton; Morris, James.
In: Journal of Nutrition, Vol. 122, No. 3, 01.01.1992, p. 553-559.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Taurine balance is different in cats fed purified and commercial diets
AU - Hickman, M. A.
AU - Rogers, Quinton
AU - Morris, James
PY - 1992/1/1
Y1 - 1992/1/1
N2 - Ileal fluxes, urinary losses and taurine balance were determined in six taurine-replete and four taurine-depleted cats. Digesta samples collected at the terminal ileum were used to assess ileal flux of taurine. Four diets were tested: a commercial diet in two forms (heat-processed and frozen) and two purified diets containing either 1225 or 0 mg taurine/kg diet. Five-day balance trials were performed on d 3-7 with measurement of food intake and taurine in urine and ileal digesta. Substantially greater quantities of total taurine (free + bound) were found in ileal digesta from cats fed the heat- processed rather than the frozen preserved diet (205 vs. 101% of the average daily taurine intake, respectively), with calculated taurine balances of -609 vs. -212 μmol/d, respectively. The quantity of taurine in ileal digesta from taurine-replete cats fed the 1225 or 0 mg taurine/kg purified diets was not significantly different, indicating that taurine found at the terminal ileum is mostly of endogenous origin. Taurine-depleted cats had significantly lower amounts of taurine in ileal digesta, with a taurine balance of -77 μmol/d. These results demonstrate that a heat-processed diet causes substantially greater losses of taurine from the intestine than does a frozen diet. This phenomenon may explain the inability of some heat-processed diets to maintain normal plasma taurine concentrations in cats.
AB - Ileal fluxes, urinary losses and taurine balance were determined in six taurine-replete and four taurine-depleted cats. Digesta samples collected at the terminal ileum were used to assess ileal flux of taurine. Four diets were tested: a commercial diet in two forms (heat-processed and frozen) and two purified diets containing either 1225 or 0 mg taurine/kg diet. Five-day balance trials were performed on d 3-7 with measurement of food intake and taurine in urine and ileal digesta. Substantially greater quantities of total taurine (free + bound) were found in ileal digesta from cats fed the heat- processed rather than the frozen preserved diet (205 vs. 101% of the average daily taurine intake, respectively), with calculated taurine balances of -609 vs. -212 μmol/d, respectively. The quantity of taurine in ileal digesta from taurine-replete cats fed the 1225 or 0 mg taurine/kg purified diets was not significantly different, indicating that taurine found at the terminal ileum is mostly of endogenous origin. Taurine-depleted cats had significantly lower amounts of taurine in ileal digesta, with a taurine balance of -77 μmol/d. These results demonstrate that a heat-processed diet causes substantially greater losses of taurine from the intestine than does a frozen diet. This phenomenon may explain the inability of some heat-processed diets to maintain normal plasma taurine concentrations in cats.
KW - cats
KW - heat processing
KW - ileal digesta taurine
KW - taurine
KW - taurine balance
UR - http://www.scopus.com/inward/record.url?scp=0026597144&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0026597144&partnerID=8YFLogxK
U2 - 10.1093/jn/122.3.553
DO - 10.1093/jn/122.3.553
M3 - Article
C2 - 1531852
AN - SCOPUS:0026597144
VL - 122
SP - 553
EP - 559
JO - Journal of Nutrition
JF - Journal of Nutrition
SN - 0022-3166
IS - 3
ER -