Breed differences in water metabolism and body composition of sheep and goats

Aganga, A.A.; Umunna, N.N.; Oyedipe, E.O.; Okoh, P. N.

doi:10.1017/s0021859600086846

Cited by 14 publications

(17 citation statements)

References 7 publications

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“…The study also confirmed previous findings (Aganga et al, 1989;Ferreira et al, 2002) of higher water intakes in sheep compared with goats and also showed that measurement of drinking time and frequency are only of moderate usefulness in measuring water intake. The very close relation between measured and estimated TWI (t 5 0.983) confirms that the isotope dilution technique gives reliable results for water intake in sheep and goats.…”

Section: Discussionsupporting

confidence: 90%

“…These results are similar to values estimated by the dilution of TOH in indigenous breeds of sheep (Uda, Yankasa) and goats (Sahel, Maradi) ranging between 73.6% to 80.5% and 66.1% to 77.8%, respectively (Aganga et al, 1989). Ranjhan et al (1982) reported TOH spaces of 71.9% to 77.4% of crossbred sheep in India, while Panaretto (1963) found TOH spaces between 36.8% to 74.2% and 55.6% to 75.7% for sheep and goats, respectively.…”

Section: Discussionsupporting

confidence: 88%

“…Various factors have been shown to influence water intake in domestic small ruminants including climatic conditions (King, 1983;Squires, 1993;Sirohi et al, 1997), species or breed (Aganga et al, 1989;Squires, 1993;Silanikove, 2000;Ferreira et al, 2002;Keskin et al, 2005;Salem et al, 2006), physiological state and age (Das et al, 1999). In addition, water intake is linearly related to dry matter intake (DMI; MacFarlane and Howard, 1972;Nocek and Braun, 1985) and thus influenced by feeding regime and food composition (King, 1983;Silanikove, 1989;Sirohi et al, 1997;Ferreira et al, 2002;Salem et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…The direct measurement of water consumed is not applicable under most extensive (and nomadic) husbandry conditions in which sheep and goats in arid and semi-arid areas are mainly kept. In this context, the isotope dilution technique (Lifson and McClintock, 1966) is a suitable method for estimating individual water flux under freerange conditions and has been applied in the field in many species (Aggrey, 1982;Aganga et al, 1989;Atti et al, 2000). Isotopes used include the non-toxic stable 2 H in deuterium oxide (D 2 O) and 3 H in tritiated water (TOH), which is a weak radioactive b-emitter.…”

Section: Introductionmentioning

confidence: 99%

“…Isotopes used include the non-toxic stable 2 H in deuterium oxide (D 2 O) and 3 H in tritiated water (TOH), which is a weak radioactive b-emitter. Aganga et al (1989) applied tritiated water to determine water spaces in sheep and goats. However, for free-range studies D 2 O appears to be a better alternative for environmental reasons and welfare considerations.…”

Section: Introductionmentioning

confidence: 99%

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Deuterium oxide dilution accurately predicts water intake in sheep and goats

Al-Ramamneh

Riek

Gerken

2010

Animal

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The aim of this study was to test whether the deuterium oxide dilution technique accurately predicts water intake in sheep and goats. Two other issues were also studied: (i) a comparison of water intake in sheep and goats and (ii) an assessment of whether observations of drinking behaviour can accurately measure the water intake. In this study, eight dry Boer goats and eight dry German Black Head Mutton ewes were kept under controlled stable conditions. Animals had access to hay and water ad libitum. Diurnal drinking behaviour was recorded by video. Individual daily water intake was measured and estimated for 2 weeks by re-weighing water buckets and from water kinetics using the deuterium oxide dilution technique, respectively. In addition, dry matter intakes were directly measured and were significantly higher in sheep than in goats. The average daily water consumption by drinking differed significantly between the two species, with higher intakes in sheep than in goats. Total body water expressed as a percentage of body mass did not differ between species. Measurement methods of total water intake (TWI) using deuterium oxide dilution and re-weighing water buckets did not differ significantly in both species (P 5 0.926). Results obtained for measured and estimated TWI confirm that the isotope dilution technique gives reliable results for estimates of water intake in sheep and goats. The higher amount of water intake in sheep was also reflected by their drinking behaviour. Sheep spent approximately 0.3% per 24-h drinking, while Boer goats spent only 0.1%. However, measured and estimated TWIs were only moderately correlated to the daily time spent drinking. The lower water intake found in Boer goats confirms a superior water management capacity compared with Black Head Mutton sheep even under temperate conditions. Keywords: sheep, goats, water intake, isotope dilution, total body water, behaviour ImplicationsTo the best of our knowledge, this is the first study that validated the water intake in sheep and goats by using the isotope dilution technique. The results show that the applied method (isotope dilution technique) allows the estimation of water intake in sheep and goats with high accuracy. This technique has the advantage that water flux can be evaluated individually while animals are kept in herds under extensive free-range conditions. Thus, normal drinking behaviour will not be disturbed by non-representative housing conditions such as stables.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Deuterium oxide dilution accurately predicts water intake in sheep and goats

Al-Ramamneh

Riek

Gerken

2010

Animal

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Mobilization of body energy reserves of alpine goats during early lactation in tropical conditions

Oliveira

Rodrigues

Glória

2022

Small Ruminant Research

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Water requirements and body water distribution in Awassi sheep and Aardi goats during winter and summer seasons

Alamer

2010

J. Agric. Sci.

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SUMMARYWater requirements, total body water (TBW) and water distribution were evaluated in Awassi sheep and Aardi goats of Saudi Arabia. Ten non-pregnant and non-lactating females from each species were individually housed in shaded pens during winter and summer seasons. Each experimental period lasted for 2 weeks; the first week was an adaptation period, followed by an evaluation period of 1 week. Feed and water intake together with body weight were recorded daily. Five animals from each group were used for determination of body water, extracellular fluid (ECF) and plasma volume (PV) using dilution techniques. Urea and sodium thiocyanate were used for the estimation of body water and ECF, respectively, and Evans blue for PV determination. Intracellular fluid (ICF) and blood volume (BV) were calculated. Feed intake was not affected by either season or species. During the winter season, Aardi goats had lower water intake in comparison with Awassi sheep, but water intake increased in all animals during summer. TBW increased during summer in all animals, but with higher values in the Aardi goats. During summer, ECF tended to increase in Aardi goats. PV, expressed as a proportion of body weight, was not affected by season, but it was maintained at higher levels in the Aardi goats irrespective of season. It could be concluded that Aardi goats used water more economically when the ambient temperature was lower but, during the summer when ambient temperatures were higher, they increased their water intake and BW content to a greater extent and stored more water in the ECF compartment compared to Awassi sheep.

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Breed differences in water metabolism and body composition of sheep and goats

Cited by 14 publications

References 7 publications

Deuterium oxide dilution accurately predicts water intake in sheep and goats

Deuterium oxide dilution accurately predicts water intake in sheep and goats

Mobilization of body energy reserves of alpine goats during early lactation in tropical conditions

Water requirements and body water distribution in Awassi sheep and Aardi goats during winter and summer seasons

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