A note on the voluntary food consumption and the sodium-potassium ratio of sheep after shearing
- 1 May 1970
- journal article
- research article
- Published by Cambridge University Press (CUP) in Animal Science
- Vol. 12 (2) , 343-346
- https://doi.org/10.1017/s0003356100038939
Abstract
SUMMARY The daily voluntary food consumption (VFC), water intake and urinary excretion of water, sodium and potassium of eight sheep were studied before and after shearing. The extracellular volume of each sheep was measured twice before and three times after shearing. VFC was significantly higher for the first 3 weeks after shearing than for the 3 weeks immediately before shearing. There was a decreased excretion of Na in the urine and a smaller Na/K ratio for the first 2 weeks after shearing, although the extracellular volume was not significantly increased until 4 weeks after shearing. Within, but not between, the 3-week periods before and after shearing, there was a close linear relationship between VFC and water intake, the latter being significantly less for the same VFC after shearing. During weeks 4 and 5 after shearing, there was an increased loss of Na in the urine and a higher Na/K ratio, and the linear relationship between VFC and water intake was intermediate between that shown before and after shearing. The VFC of the sheep before shearing and in week 5 after shearing were similar.Keywords
This publication has 6 references indexed in Scilit:
- CHANGES IN SODIUM REQUIREMENT OF THE SHEEP ASSOCIATED WITH CHANGES OF DIETQuarterly Journal of Experimental Physiology and Cognate Medical Sciences, 1966
- Water metabolism of Merino sheep shorn during summerAustralian Journal of Agricultural Research, 1966
- The effect of shearing on the appetite of the sheepNew Zealand Journal of Agricultural Research, 1963
- Effect of pasture availability and shearing stress on herbage intake of grazing sheepAustralian Journal of Agricultural Research, 1963
- Interaction of nutrition and air temperature with water metabolism of Merino wethers shorn in winterAustralian Journal of Agricultural Research, 1962
- Environmental temperature, energy metabolism and heat regulation in sheep. III. The metabolism and thermal exchanges of sheep with fleecesThe Journal of Agricultural Science, 1959