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The effect of feeding frequency and meal size on amounts of total and parotid saliva secreted by sheep

Published online by Cambridge University Press:  09 March 2007

Richard R. Carter ,
O. Brian Allen  and
W. Larry Grovum
Richard R. Carter
Affiliation:
Departments of Biomedical Sciences University of Guelph, Guelph, Ontario N1G 2W1, Canada
O. Brian Allen
Affiliation:
Mathematics and Statistics, University of Guelph, Guelph, Ontario N1G 2W1, Canada
W. Larry Grovum
Affiliation:
Departments of Biomedical Sciences University of Guelph, Guelph, Ontario N1G 2W1, Canada
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Abstract

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Total and unilateral parotid saliva production during eating were measured in response to offering sheep a fixed amount of lucerne (Medicago sativa) hay as one, two, four or eight meals. Total saliva measurements were obtained using sham-fed oesophageal-fistulated sheep. Unilateral parotid saliva was collected from sheep fitted with reversible re-entrant cannulas. Dry matter intakes and eating times were measured for each meal but were not constrained to particular values. Total and unilateral parotid saliva production during eating increased linearly with the log of the number of meals (p = 0.0001). The amounts corresponding to one, two, four and eight meals of lucerne hay were 1553, 1737, 1851 and 2087 ml during total collections and 209, 248, 307 and 352 ml during unilateral parotid collections. The time-period spent eating and the amount of food consumed both increased as meal number increased. Total saliva collections when lucerne hay was sham-fed as one, two, four or eight meals were associated with eating times of 56.9, 57.4, 70.8 and 86.0 min and intakes of 562, 622, 629 and 638 g dry matter respectively. For unilateral parotid collections, eating times and dry matter intakes were 64.2, 71.3, 78.0, 82.1 min and 515, 579, 614 and 627 g for one, two, four and eight meals of lucerne hay respectively. The saliva production response appeared to be determined through the effects of the time-period spent eating and amounts consumed, but other undetermined effects of feeding frequency contributed to the response. The importance of meal duration on total saliva production was assessed by sham-feeding of 800 g lucerne as stem, leaf, hay, chopped hay or ground and pelleted hay. Increasing meal duration by feeding with stems resulted in the production of 1808 ml saliva, whereas the rapid consumption of pellets resulted in only 442 ml being produced.

Keywords

Feeding frequencySalivaSheep
Type
Feeding Behaviour and Metabolism
Information
British Journal of Nutrition , Volume 63 , Issue 2 , March 1990 , pp. 305 - 318
Copyright
Copyright © The Nutrition Society 1990

References

Bailey, C. B. (1961). Saliva secretion and its relation to feeding in cattle. 3. The rate of secretion of mixed saliva in the cow during eating, with an estimate of the magnitude of the total daily secretion of mixed saliva. British Journal of Nutrition 15, 443–451.CrossRefGoogle ScholarPubMed
Burt, A. W. A. & Dunton, C. R. (1967). Effect of frequency of feeding upon food utilization by ruminants. Proceedings of the Nutrition Society 26, 181–190.CrossRefGoogle ScholarPubMed
Carr, D. H. & Titchen, D. A. (1978). Post prandial changes in parotid salivary secretion and plasma osmolality and the effects of intravenous infusions of saline solutions. Quarterly Journal of Experimental Physiology 63, 1–21.CrossRefGoogle ScholarPubMed
Carter, R. R. & Grovum, W. L. (1988). Reversible re-entrant cannulation of the parotid duct in sheep. Canadian Journal of Animal Science 68, 305–309.CrossRefGoogle Scholar
Chapman, H. W. & Grovum, W. L, (1984). Esophageal fistulation of sheep for sham feeding studies. Canadian Journal of Animal Science 64, 106–107.CrossRefGoogle Scholar
Denton, D. A. (1957). A gregarious factor in the natural conditioned salivary reflexes of sheep. Nature 16, 341–344.CrossRefGoogle Scholar
Froetschel, M. A., Croom, W. J., Hagler, W. M., Argenzio, R. A., Liacos, J. A. & Broquist, H. P. (1987). Effects of slaframine on ruminant digestive function: Liquid turnover rate and fermentation patterns in sheep and cattle. Journal of Animal Science 64, 1241–1248.CrossRefGoogle ScholarPubMed
Froetschel, M. A., Croom, W. J., Hagler, W. M., Broquist, H. P. & Gaskins, R. (1984). Effects of slaframine on salivary flow and rumen function. Canadian Journal of Animal Science 64, 64–65.CrossRefGoogle Scholar
Gibson, J. P. (1984). The effects of frequency of feeding on milk production of dairy cattle: an analysis of published results. Animal Production 38, 181–189.Google Scholar
Gordon, J. G. (1961). The relationship between rumination and frequent feeding. Animal Behaviour 9, 16–19.CrossRefGoogle Scholar
Grovum, W. L. (1988). Inserting a rumen cannula in sheep to minimize leakage. Canadian Journal of Animal Science 68, 561–563.CrossRefGoogle Scholar
Harrison, D. G., Beever, D. E., Thomson, D. J. & Osbourn, D. F. (1975). Manipulation of rumen fermentation in sheep by increasing the rate of flow of water from the rumen. Journal of Agricultural Science, Cambridge 85, 93–101.CrossRefGoogle Scholar
Kay, R. N. B. (1958). Continuous and reflex secretion by the parotid gland in ruminants. Journal of Physiology 144, 463–475.CrossRefGoogle ScholarPubMed
Kay, R. N. B. (1960). The rate of flow and composition of various salivary secretions in sheep and calves. Journal of Physiology 150, 515–537.CrossRefGoogle ScholarPubMed
Kjeilen, J. C. J., Brodin, P., Aars, H. & Berg, T. (1987). Parotid salivary flow in response to mechanical and gustatory stimulation in man. Acta Physiologica Scandinavica 131, 169–175.CrossRefGoogle Scholar
McDougall, E. I. (1948). Studies on ruminant saliva. 1. The composition and output of sheep's saliva. Biochemical Journal 43, 99–109.CrossRefGoogle ScholarPubMed
Owens, F. N. & Goetsch, G. L. (1986). Digesta passage and microbial protein synthesis. In Control of Digestion and Metabolism in Ruminants, pp. 196–223 [Milligan, L. P., Grovum, W. L. and Dobson, A., editors]. Engelwood Cliffs, New Jersey: Prentice Hall.Google Scholar
Ruiz, A. & Mowat, D. N. (1987). Effect of feeding frequency on the utilization of high-forage diets by cattle. Canadian Journal of Animal Science 67, 1067–1074.CrossRefGoogle Scholar
Snedecor, G. W. & Cochran, W. G. (1980a). Statistical Methods, 7th ed., p. 349,Iowa: Iowa State University Press.Google Scholar
Snedecor, G. W. & Cochran, W. G. (1980b). Statistical Methods, 7th ed., pp. 172–174, Iowa: Iowa State University Press.Google Scholar
Teeter, R. G. & Owens, F. N. (1983). Characteristics of water soluble markers for measuring rumen liquid volume and dilution rates. Journal of Animal Science 56, 717–728.CrossRefGoogle Scholar
Thomson, D. J., Beever, D. E., Latham, M. J., Sharpe, M. E. & Terry, R. A. (1978). The effect of inclusion of mineral salts in the diet on dilution rate, the pattern of rumen fermentation and the composition of the rumen microflora. Journal of Agricultural Science, Cambridge 91, 1–7.CrossRefGoogle Scholar
Warner, A. C. I. & Stacy, B. D. (1968). The fate of water in the rumen. 2. Water balances throughout the feeding cycle in sheep. British Journal of Nutrition 22, 389–410.CrossRefGoogle Scholar
Wilson, A. D. (1963). The effect of diet on the secretion of parotid saliva by sheep. II. Variations in the rate of salivary secretion. Australian Journal of Agricultural Research 14, 680–689.CrossRefGoogle Scholar
Wilson, A. D. (1964). Parotid saliva and rumen digestion in the sheep. British Journal of Nutrition 18, 163–172.CrossRefGoogle ScholarPubMed
Wilson, A. D. & Tribe, D. E. (1963). The effect of diet on the secretion of parotid saliva by sheep. I. The daily secretion of saliva by caged sheep. Australian Journal of Agricultural Research 14, 670–679.CrossRefGoogle Scholar