EFFECT OF DRINKING WATER QUALITY ON PHYSIOLOGICAL BLOOD PARAMETERS AND PERFORMANCE OF LAYING HENS IN DIYALA PROVINCE, IRAQ.

Current objectives to evaluate the influences of drinking water quality on blood parameters and performance of ISA brown laying hens. Total of 6000 ISA brown layers of 200 day-old weighing 1.4 to 1.7 kg from three different farms in average of 2000 ISA brown hens per farm that utilize Agricultural drainage water, river water and tap water for drinking were put under investigation. Three samples of drinking water were collected from each source in hens house (agricultural drainage water; river water and tap water) at 15 days interval. Each time samples analyzed directly to determine turbidity (Nephelometric turbidity unit, NTU) (NTU), PH and electric conductivity. Three samples of blood were collected from wing vein at 15 days interval using EDTA free tubes for collection of serum to determine Serum Chloride, Sodium, Phosphor, Calcium and potassium . Productive Performance evaluated by determination of.egg weight, Hen day Mortality, body weight and food consumption were determined at 15 days interval. Significant difference, p value (0.001624) between three types of waters regarding turbidity (Nephelometric turbidity unit, NTU) (NTU); PH, p value (0.030139) and electric conductivity, p value (0.0000808). There was no significant difference in the serum level of Sodium, Chloride, Calcium, Phosphor, potassium, BUN and Creatinine of ISA brown drinks river water, agricultural drainage water and tap water. ISA brown drinks tap water have no mortality for the entire time of the study, higher hen day, higher food consumption, higher body weight and egg weight compared with other types of water with significant difference between them, p value = (<0.0001). Quality of drinking water has accumulative effects on blood parameters and direct effect on performance of ISA brown laying hens. [ABSTRACT FROM AUTHOR]