Lupins and energy-yielding nutrients in ewes. II. Responses in ovulation rate in ewes to increased availability of glucose, acetate and amino acids
Article
Article Title | Lupins and energy-yielding nutrients in ewes. II. Responses in ovulation rate in ewes to increased availability of glucose, acetate and amino acids |
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ERA Journal ID | 16803 |
Article Category | Article |
Authors | Teleni, E. (Author), Rowe, J. B. (Author), Croker, K. P. (Author), Murray, P. J. (Author) and King, W. R. (Author) |
Journal Title | Reproduction Fertility and Development |
Journal Citation | 1 (2), pp. 117-125 |
Number of Pages | 9 |
Year | 1989 |
Place of Publication | Australia |
ISSN | 1031-3613 |
1448-5990 | |
Digital Object Identifier (DOI) | https://doi.org/10.1071/RD9890117 |
Web Address (URL) | https://www.publish.csiro.au/rd/RD9890117 |
Abstract | An experiment, using a total of 320 Merino ewes, over two successive breeding seasons was conducted to investigate the separate effects of energy-yielding and protein-yielding nutrients on ovulation rate in sheep. The available energy-yielding or protein-yielding nutrients in the blood of sheep fed a maintenance pelleted ration were increased by either intravenous infusions of metabolites (acetate, glucose or acetate + glucose), feeding lupin grain, modification of the pattern of rumen fermentation to increase propionate production using the ionophore, lasalocid, or by feeding of ruminally undegradable protein (formaldehyde-treated casein). All treatments were given for 9 days prior to and including expected time of ovulation. Ovulation rates were measured by laparoscopy. In the first season (the 1984 experiment) when the effects of lupin grain, glucose + acetate and formaldehyde-treated casein were compared, ovulation rates were increased significantly in the group fed lupin (29%, P less than 0.001) and the group infused with glucose + acetate (24%, P less than 0.01). There was an apparent (17%) but statistically non-significant increase in the group fed casein. In comparisons between lupin grain, glucose, acetate, glucose + acetate, formaldehyde-treated casein and lasalocid in the 1985 experiment there were similar significant increases in ovulation rates in the groups fed lupin, and those infused with glucose or glucose + acetate (approximately 25%, P less than 0.001). The increase in the group infused with acetate was lower at 14% (P less than 0.05) and the increases of 7% in the groups fed casein or lasalocid were not significant. |
Keywords | animal experiment; article; lupin; nonhuman; nutrient; ovulation; sheep |
ANZSRC Field of Research 2020 | 300305. Animal reproduction and breeding |
310903. Animal developmental and reproductive biology | |
300303. Animal nutrition | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Department of Agriculture, Western Australia |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q63v8/lupins-and-energy-yielding-nutrients-in-ewes-ii-responses-in-ovulation-rate-in-ewes-to-increased-availability-of-glucose-acetate-and-amino-acids
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