Physiological responses, feed intake, urine volume and serum osmolality of aardi goats deprived of water during spring and summer

El-Nouty, F. D.; Alhaidary, A.; Basmaeil, S. M.

doi:10.5713/ajas.1990.331

Cited by 16 publications

(14 citation statements)

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“…Concerning the changes in PCV, it seems that camels were less affected by water deprivation than goats (11% vs. 37%), which could indicate less hemoconcentration in camels. A similar trend was observed in the previous studies on goats (El-Nouty et al 1990) and camels (Al-Haidary 2005).…”

Section: Discussionsupporting

confidence: 90%

“…Moreover, the mesor values of camels T c rhythm (36.9590.028C) were low compared with goats (39.2990.038C). Nevertheless, these values fell within the range of temperatures measured in earlier studies on the body (rectal) temperatures of goats (El-Nouty et al 1990;Torrao et al 2011) and camels (Ayoub and Saleh 1998;Al-Haidary 2005. The fact that the large terrestrial mammals inhabit arid and semi-arid environment had consistently a lower average mesor values as a way of adaptation to the thermal constraints of their large body size seems to support this notion (Kinahan et al 2007).…”

Section: Discussionsupporting

confidence: 81%

“…Jaber et al (2004) recorded a decrease in serum K ' concentration of Awassi sheep when subjected to intermittent watering once every 4 days. Additionally, Aardi goats in particular also exhibited a decrease in serum K ' concentration after 2 days and more after 4 days of water deprivation (El-Nouty et al 1990). The same author returned the reason to deprivation-induced low daily feed intake.…”

Section: Discussionmentioning

confidence: 99%

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A comparative thermophysiological study on water-deprived goats and camels

Samara

Abdoun

Okab

et al. 2012

Journal of Applied Animal Research

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This study aimed to characterise and compare the thermophysiological adaptation of goats and camels to water deprivation under hot environmental conditions. A total of five male Aardi goats (2593.2 kg BW; 1092 months old) as well as five male Majaheem camels (340916.6 kg; 2292 months old) were used in this study. This study was performed during summer season and lasted for 6 weeks. During the Dehydration period, water was withheld for 72 hours. The results revealed that core body temperature (T c) of both species had monophasic circadian rhythms with a rhythm's oscillation of 0.678C in goats and 0.458C in camels during the Eu-hydration period. Water deprivation accompanied with heat stress affected the circadian rhythm of T c in both species, but the effect was delayed in camels compared to goats. In addition, camels exhibited smaller oscillation of T c rhythm (0.98 o C) than goats (1.53 o C), which might indicate a better thermoregulatory system of camels. Water deprivation for 72 hours increased most of the measured haematological and biochemical parameters in both species, but camels exhibited smaller percentage changes compared to goats. These results demonstrate the greater capability of camels, compared to goats, to tolerate water deprivation under hot environmental conditions.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 99%

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A comparative thermophysiological study on water-deprived goats and camels

Samara

Abdoun

Okab

et al. 2012

Journal of Applied Animal Research

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“…High ambient temperature, relative humidity and radiant energy, particularly with concurrent low air speed, compromise the ability of animals to dissipate heat. As a result, there is an increase in core body temperature, which in turn initiates compensatory and adaptive mechanisms in an attempt to re-establish homeothermy and homeostasis (El-Nouty et al 1990;Khalifa et al 1997;Horowitz 1998Horowitz , 2002Lin et al 2006). These readjustments, generally referred to as adaptations, may be favorable or unfavorable to economic interests of humans, but are essential for survival of domestic animals (Stott 1981).…”

Section: Body Heat -Animal X Climate Interactionsmentioning

confidence: 99%

Response of Domestic Animals to Climate Challenges

Gaughan

Lacetera

Valtorta

et al. 2009

Biometeorology for Adaptation to Climate Variability and Change

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The livestock sector is socially, culturally and politically very significant. It accounts for 40% of the world's agriculture Gross Domestic Product (GDP). It employs 1.3 billion people, and creates livelihoods for one billion of the world's population living in poverty. Climate change is seen as a major threat to the survival of many species, ecosystems and the financial sustainability of livestock production systems in many parts of the world. The potential problems are even greater in developing countries. Economic studies suggest severe losses if current management systems are not modified to reflect the shift in climate. In short, farmers/ managers need to adapt to the changes. There has been considerable interest in gaining an understanding how domestic livestock respond to climatic stressors. Studies have for the most part been undertaken in developed countries. These studies have provided a wealth of knowledge on differences between genotypes, the impact of climatic stress on production, reproduction and health. However little is known about adaptation of animals to rapid changes in climatic

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“…Also, the Barmer and black Bedouin goats can survive on once in 4 days watering as well as desert goats, managed under the open grazing system and with a watering regimen of once in 3-6 days (Silanikove 1994). Under a 3-day water deprivation, the Egyptian Baladi goat was still able to maintain about 35% of the control feed intake (Hassan 1989), while a 2-day water deprivation in Aardi goats made them stop eating completely (El-Nouty et al 1990). Therefore, breeds that can adapt to changing climatic condition, including resilience to limited water intake, without seriously compromising production indices are currently advocated as a key research need and focus for sustainability (Akinmoladun et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of hydric stress on intake, growth performance and nutritional status of Nguni goats

Akinmoladun¹,

Ikusika

Chimonyo

2020

Italian Journal of Animal Science

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Limited water intake affects livestock. Though small ruminants are more resilient to suboptimum water intake compared to other species of livestock, tolerance abilities differ among breeds. This study was aimed at investigating the effect of water deprivation levels on intake, growth performance and nutritional status of Nguni goats. Thirty-six Nguni goats (initial weight, 18 ± 3.2 kg) were assigned to one of three treatments: without water deprivation, water deprivation for 24 and 48 h in a completely randomised design for 40 days. Performance traits, body condition score (BCS), faecal egg count (FEC) and FAffa MAlan CHArt (FAMACHA) were determined weekly while blood metabolites were determined on the last day of the experiment and analysed with PROC GLM of SAS software. The average daily water intake (WI) and feed intake (FI) increased (p < .05) with increased period of water deprivation. The average daily gain (ADG) and feed conversion ratio (FCR) declined (p < .01) with increased period of water deprivation. Final body weight, BCS and FAMACHA decreased (p < .05) while faecal egg count, glucose and creatine increased (p < .05) with increased period of water deprivation. Water deprivation period had negative correlations with ADFI, WFR, ADG, FCR, FAMACHA, BCS and BW. The correlation of BW was negative with FEC and positive with serum glucose. It was concluded that water deprivation impacts negatively on the nutritional status, blood metabolites and growth performance of Nguni goats. HIGHLIGHTS Limited water intake in small ruminants decreases body weight and body condition score. Rehydration, after prolonged dehydration of 48 h in small ruminants, results in increased average daily water and feed intake. Under dehydration effect, bodyweight positively correlates with body condition scores and negatively correlates with faecal egg count.

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Physiological responses, feed intake, urine volume and serum osmolality of aardi goats deprived of water during spring and summer

Cited by 16 publications

References 0 publications

A comparative thermophysiological study on water-deprived goats and camels

A comparative thermophysiological study on water-deprived goats and camels

Response of Domestic Animals to Climate Challenges

Effect of hydric stress on intake, growth performance and nutritional status of Nguni goats

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