Effect of short‐term water restriction in hot season on some blood parameters and immune response to Newcastle disease vaccine of local and commercial layers in the late phase of production

Abstract

Forty-five Hisex commercial layers and forty-five local Saudi breed layers were used to compare and assess the effect of water restriction under hot conditions on blood constituents and immune response to Newcastle disease (ND) vaccine. The trial was divided into three periods: control (7 day), water restriction (14 day) and rehydration (7 day). During water restriction, layers from each breed were divided into three groups that received 0%, 20% and 40% restriction of drinking water relative to the control period. The immune response against ND was affected by breed; it also declined significantly with 40% water restriction 10 days post-restriction. Water restriction did not affect haematocrit value, plasma total protein, albumin, glucose or osmolality, which may not suggest a reduction in plasma volume. However, plasma creatinine increased in both breeds because of water restriction that remained elevated during rehydration. Water restriction increased plasma urea in the local group, while it decreased in the commercial group. Irrespective of rate of water restriction, it can be concluded that the two breeds can withstand up to 40% water restriction during high environmental temperature. However, the local breed may be superior in water conservation in relation to the commercial layers.

Water deprivation in poultry in connection with transport to slaughter—a review

“…In a study with broilers, creatinine concentrations were shown to decrease after 6 h of water deprivation from approximately 38 to 27 mmol/L, but to rise significantly over the next 42 h period at a linear rate, reaching 65 mmol/L after 48 h of deprivation ( Vanderhasselt et al, 2013 ). In another experiment, laying hens were subjected to various levels of water restriction (0, 20, and 40% restriction) for a 1-wk period ( Alamer and Ahmed, 2012 ). During this time, plasma creatinine concentration was elevated in those experiencing water restriction, suggesting reduced renal functioning ( Alamer and Ahmed, 2012 ).…”

“…In another experiment, laying hens were subjected to various levels of water restriction (0, 20, and 40% restriction) for a 1-wk period ( Alamer and Ahmed, 2012 ). During this time, plasma creatinine concentration was elevated in those experiencing water restriction, suggesting reduced renal functioning ( Alamer and Ahmed, 2012 ).…”