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Ain Shams University (1984)

EFFECT OF DRINKING BRINE WATER ON ENERGY & WATER METABOLISM IN SHEEP

El-faramawy, Amina abd el-hakim

Titre : EFFECT OF DRINKING BRINE WATER ON ENERGY & WATER METABOLISM IN SHEEP

Auteur : El-faramawy, Amina abd el-hakim

Etablissement de soutenance : Ain Shams University

Grade : Master of Science (MSc) in Animal Production 1984

Résumé
The increasing demand for red-meat in Egypt could perhaps be partially met through the development of small ruminants production. The major sites, where sheep and goat can be raised successfully, are at the less-dense populated north-west coastal area and at Sinai-desert region. The system of the agricultural range industry in such regions would at first place require developing surface and underground water resources as a major discipline. The pieces of available information indicated that water salinity could be a major problem facing such developments. Under-ground water total salinity may reach 4978 ppm in the north-west coastal region (Hammad, 1966) and 11600 ppm in Sinai-desert (The Desert Institute Report, 1981). The effect of water salinity on sheep performance have indicated that sheep relatively tolerate high levels of bore saline-water (Heller, 1933 ;Peircea, l968 ; Wilson, 1974 ; Singh and Taneja, 1981) • Even though, the upper safety limit of salinity is not consist !illt and may vary with different breeds (Singh and Taneja, 1981), environmental (Abdel-Mageed, 1969) and nutritional .stressors (Wilson, 197 4) facing the animals as well. The present work was conducted on Osimi sheep to investigate the influence of various levels of salty drinking water on water, electrolyte, energy and nitrogen metabolism using conventional and radioactive-tracer techniques. The main objectives were first to rank the abilities of Osimi sheep to tolerate high salt intakes when saline water is to be the major source of drinking water, secondly, to study the influence of various levels of salt intake on the nutritive value of their diets, as assessed by their metabolizable and digestible protein content, and third, to test the possibility of replacing fresh water by underground or s’-’a water in sheep kept in areas where fresh water is limited or non-existing.

Présentation étendue (EULC)

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