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. 2024 Jan-Dec;95(1):e14007.
doi: 10.1111/asj.14007.

Adaptation mechanism of Phan Rang sheep to salinity in drinking water under tropical conditions

Thiet Nguyen  1 , Dat Nguyen Thanh  1 , Ngu Nguyen Trong  2 , Narongsak Chaiyabutr  3 , Sumpun Thammacharoen  3
Affiliations

Adaptation mechanism of Phan Rang sheep to salinity in drinking water under tropical conditions

Thiet Nguyen et al. Anim Sci J. 2024 Jan-Dec.

Abstract

The aims of this study were to determine adaptation mechanism of sheep to salinity in drinking water. A group of 10 male sheep were used in a 6-week of experiment, with 1 week for pre-treatment period (Week 1), 4 weeks for during treatment period (Week 2 to Week 5), and 1 week for posttreatment period (Week 6). During the pre- and posttreatment periods, sheep consumed with fresh water. However, during treatment period, they were given with diluted seawater (DSW) at concentrations of 0.5%, 1.0%, 1.5%, and 2% for Weeks 2, 3, 4, and 5, respectively. Animal was offered 300 g concentrate and corn stover silage for ab libitum. Dry matter intake decreased as DSW increased, whereas sheep drinking DSW showed an increase in water intake and urine volume (p < 0.05). Body weight change decreased in 2% DSW. Sheep consuming 2% DSW exhibited higher plasma electrolyte levels compared to other groups. But plasma levels of AST, ALT, and creatinine were unaffected by DSW (p > 0.05). The elevated levels and excretions of urinary electrolytes were found in DSW groups (p < 0.05). Water balance was unaffected by DSW, except during the recovery period. It concluded that adapted sheep can consume DSW up to 1.5% without harmful effects.

Keywords: body weight change; diluted seawater; electrolytes; sheep; stepwise adaptation method.

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