Water balance in goats subjected to feed restriction
Article
Article Title | Water balance in goats subjected to feed restriction |
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ERA Journal ID | 5458 |
Article Category | Article |
Authors | Teixeira, I.A.M.A. (Author), Filho, J. M. Pereira (Author), Murray, P. J. (Author), Resende, K. T. (Author), Ferreira, A. C. D. (Author) and Fregadolli, F. L. (Author) |
Journal Title | Small Ruminant Research |
Journal Citation | 63 (1-2), pp. 20-27 |
Number of Pages | 8 |
Year | 2006 |
Place of Publication | Netherlands |
ISSN | 0197-7393 |
0921-4488 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.smallrumres.2005.01.008 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0921448805000337 |
Abstract | The effect of feed restriction on water balance and nutrient utilization was investigated in individually penned Boer×Saanen kids. Twenty-two male Boer×Saanen kids with an initial average live weight (LW) of 15 kg were used. Seven kids were slaughtered at the beginning of the experiment (reference animals) and the remainders were allocated to one of the three treatments (0, 30 and 60% restriction) and therefore there were five kids per treatment. The feed intake for the 0% restriction treatment animals determined the intake for the animals in the 30 and 60% restriction treatment. When the animals in the 0% restriction treatment group reached 25 kg LW, the animals in the 30 and 60% restriction treatment groups were also slaughtered. There was a negative relationship between DMI and water intake. The digestibility coefficients for DM, OM, carbohydrates, ash, ether extract, energy, NDF, ADF and lignin did not differ between treatments, whereas the digestibility coefficient for CP was different between treatment groups. The highest metabolic water production was in animals in the 0% restriction treatment group. No significant differences were observed in the composition of gastro-intestinal tract contents of the goats in the different treatments. Lower water retention was found in the animals in the 60% restriction treatment group. The study showed that feed restriction affected water intake, CP digestibility and water retention in the body of the kid goats. This experiment demonstrated that DM:water intake ratio changed when severe feed restriction was applied (60% restriction) and water was freely available. It shows a different pattern of behaviour of penned goats, particularly if feed intake is restricted and perhaps caution is needed to extrapolate results from nutritional and physiological trials in pens to goats at pasture. |
Keywords | Water retention; Nutrient digestibility; Metabolic water production; Boer×Saanen kids; Penned goats; Feed restriction |
ANZSRC Field of Research 2020 | 300301. Animal growth and development |
300303. Animal nutrition | |
300306. Animal welfare | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6397/water-balance-in-goats-subjected-to-feed-restriction
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