Seawater Consumption and Water Economy of Tropical Feral Goats

Burke, Margaret Gould

doi:10.2307/2388559

Cited by 4 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Evolutionary and ecological change has also been witnessed in post‐domestic populations. Wild goats Capra aegragus on Aldabra Atoll regularly drink saltwater when freshwater is absent (Burke ). Wild sheep Ovis aries show higher resistance to local parasites than sympatric domestic sheep.…”

Section: Discussionmentioning

confidence: 99%

Introduced megafauna are rewilding the Anthropocene

et al. 2017

View full text Add to dashboard Cite

23Large herbivorous mammals, already greatly reduced by the late-Pleistocene extinctions, 24 continue to be threatened with decline. However, many herbivorous megafauna (body 25 mass ≥ 100 kg) have populations outside their native ranges. We evaluate the 26 distribution, diversity and threat status of introduced terrestrial megafauna worldwide and 27 their contribution towards lost Pleistocene species richness. Of 76 megafauna species, 22 28 (~29%) have introduced populations; of these ten (45%) are threatened or extinct in their 29 native ranges. Introductions have increased megafauna species richness by between 10% 30 (Africa) and 100% (Australia). Furthermore, between 15% (Asia) and 67% (Australia) of 31 extinct species richness, from the late Pleistocene to today, have been numerically 32 replaced by introduced megafauna. Much remains unknown about the ecology of 33 introduced herbivores, but evidence suggests that these populations are rewilding modern 34 ecosystems. We propose that attitudes towards introduced megafauna should allow for 35 broader research and management goals.

show abstract

Section: Discussionmentioning

confidence: 99%

Introduced megafauna are rewilding the Anthropocene

et al. 2017

View full text Add to dashboard Cite

show abstract

“…In addition to the thermoregulatory benefits of restricting activities to cooler nighttime periods, ungulates in some areas also increase the intake of water in forage by feeding at night. In areas where relative humidity increases at night, as ambient temperatures decrease and the air loses its capacity to hold water, condensation (dew) forms on vegetation, increasing water content up to 30% (Taylor 1968, Burke 1988). Furthermore, the general behavior of foraging on succulent plants (e.g., cacti), underground storage organs (e.g., tubers), and browse species with higher moisture content, regardless of time of day, provides a means to reduce the amount of free water needed to maintain water balance (Taylor 1969a, Jarman 1973, Williamson 1987, Warrick and Krausman 1989.…”

Section: Timing Of Activitymentioning

confidence: 99%

Mechanisms of Thermoregulation and Water Balance in Desert Ungulates

Cain

Krausman

Rosenstock

et al. 2006

Wildlife Society Bulletin

189

175

View full text Add to dashboard Cite

Desert ungulates must contend with high solar radiation, high ambient temperatures, a lack of water and cover, unpredictable food resources, and the challenges these factors present for thermoregulation and water balance. To deal with the conflicting challenges of maintaining body temperature within acceptable limits and minimizing water loss, desert ungulates use a variety of physiological, morphological, and behavioral mechanisms. The mechanisms involved in thermoregulation and water balance have been studied in many domestic and wild African and Middle Eastern ungulates; studies involving ungulates inhabiting North American deserts are limited in comparison. Our objectives were to review available scientific literature on thermoregulation, water balance, and the effects of dehydration in desert ungulates. We discuss the physiological, morphological, and behavioral mechanisms used by ungulates to maintain temperature and water balance in arid environments, and the implications for research and management of desert ungulates in western North America.

show abstract

Effects of drinking saline water on food and water intake, blood and urine electrolytes and biochemical and haematological parameters in goats: a preliminary study

Zoidis

Hadjigeorgiou

2018

Anim. Prod. Sci.

View full text Add to dashboard Cite

Drinking-water availability, both of quantity and quality, critically limits animal farming in semiarid and arid areas, but differences among species exist. The aim of the present study was to investigate goat saline-water tolerance. A group of four castrated adult males were used in a 4-week experimental period, which followed a 2-week pre-trial period and preceded a 1-week post-trial period. Animals were offered alfalfa hay and concentrates at about maintenance level and were allowed consecutively the following five levels of water salinity: 0‰, 0.5‰, 5‰, 10‰ and 20‰ NaCl. Feed and water consumption were recorded daily during trial, while blood- and urine-sample collections were performed weekly. Plasma concentrations of aldosterone, sodium (Na), potassium (K), glucose, creatinine, urea and proteins, and haematological parameters were analysed. Furthermore, urine pH, specific weight and concentrations of Na, K and creatinine were measured, as well as plasma and urine osmolality. Water intake increased until 10‰ NaCl (from 2.0 to 3.2 L/day, P < 0.001) and decreased thereafter to reach 2.5 L/day. Feed intake decreased (from 1.4 to 1.1 kg/day, P < 0.001) and urine excretion increased with an increasing salinity (from 1.12 to 1.47 L/day, P < 0.001). Increasing salinity elevated plasma concentrations of Na (from 143 to 150 mmol/L, P < 0.05), glucose (from 67.50 to 80.75 mg/dL, P < 0.05), urea (from 26.5 to 47 mg/dL, P < 0.01), proteins (from 6.3 to 8.3 g/dL, P < 0.001), osmolality (from 284 to 299 mosm/kg, P < 0.01) and creatinine (from 0.8 to 1.0 mg/dL, P < 0.01) whereas, K, aldosterone and bodyweight remained unaffected. Moreover, urine osmolality (from 317 to 1217 mosm/kg, P < 0.001), specific weight (from 1018 to 1040, P < 0.01), Na (from 55 to 377 mmol/L, P < 0.001) and K (from 144 to 329 mmol/L, P < 0.001) increased, whereas, pH and creatinine were unaffected. Observed changes in other haematological parameters are considered of minor physiological importance. The results indicated that goats can subsist on drinking saline water (up to 20‰ NaCl), for at least 2 weeks without harmful effects.

show abstract

Seawater Consumption and Water Economy of Tropical Feral Goats

Cited by 4 publications

References 14 publications

Introduced megafauna are rewilding the Anthropocene

Introduced megafauna are rewilding the Anthropocene

Mechanisms of Thermoregulation and Water Balance in Desert Ungulates

Effects of drinking saline water on food and water intake, blood and urine electrolytes and biochemical and haematological parameters in goats: a preliminary study

Contact Info

Product

Resources

About