Effect of season and nutrition on scrotal circumference of Merino rams
Article
Article Title | Effect of season and nutrition on scrotal circumference of Merino rams |
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ERA Journal ID | 5178 |
Article Category | Article |
Authors | Murray, P. J. (Author), Rowe, J. B. (Author) and Pethick, D. W. (Author) |
Journal Title | Australian Journal of Experimental Agriculture |
Animal Production Science | |
Journal Citation | 31 (6), pp. 753-756 |
Number of Pages | 4 |
Year | 1991 |
Publisher | CSIRO Publishing |
Place of Publication | Australia |
ISSN | 0816-1089 |
1836-0939 | |
1836-5787 | |
Digital Object Identifier (DOI) | https://doi.org/10.1071/EA9910753 |
Web Address (URL) | https://www.publish.csiro.au/an/ea9910753 |
Abstract | In 3 experiments, groups of 5 Merino rams were individually fed a pelleted ration at maintenance (1 kg/day), with or without 750 g/day of lupin grain, and kept indoors under conditions of natural light and temperature. Measurements of scrotal circumference and liveweight were made during winter, spring-summer and autumn, for periods of 42–49 days. Ambient temperatures and daylengths were recorded. The season of the experiment affected the rate of change of scrotal circumference. Rams fed the maintenance diet showed a pattern of increasing scrotal circumference, starting in late spring after the spring equinox and reaching a maximum in autumn-early winter, then decreasing in mid-late winter after the winter equinox. Scrota1 circumference responded to increased nutrition under all daylength regimes and the magnitude of this response was influenced by the season. |
Keywords | Merino rams; nutrition |
ANZSRC Field of Research 2020 | 300305. Animal reproduction and breeding |
300301. Animal growth and development | |
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/q63v3/effect-of-season-and-nutrition-on-scrotal-circumference-of-merino-rams
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