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STUDY OF THE RATE OF PASSAGE OF FOOD WITH CHROMIUM‐MORDANTED PLANT CELLS IN CHICKENS ( GALLUS GALLUS )
Author(s) -
Ferrando C.,
Vergara P.,
Jiménez M.,
Goñalons E.
Publication year - 1987
Publication title -
quarterly journal of experimental physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 101
eISSN - 1469-445X
pISSN - 0144-8757
DOI - 10.1113/expphysiol.1987.sp003072
Subject(s) - husk , chromium , broiler , gizzard , chemistry , particle size , retention time , food science , bran , zoology , horticulture , biology , botany , chromatography , raw material , organic chemistry
Thirty broilers 8‐10 weeks old were used to study the rate of food passage in chickens. Wheat bran and rice husks of three different sizes: more than 2 mm, between 1 and 1·5 mm, and less than 0·5 mm, mordanted with chromium, were used as markers. The suitability of these markers to study the rate of food passage in chickens and the possible influence of the size and hardness of the particle on the retention time was the objective of this study. Both T 1 , the time of first appearance of the marker, and T m , the mean retention time, have been evaluated. T m was a better parameter than T 1 for studying transit time. T m was longer with the biggest particles, especially with rice husk. The gizzard, with its grinding activity and pylorus, a selector of particle size, seems to be the transit regulator for solid particles in chickens. No chromium was found in the caecal contents of any case.