Effects of Drinking Water Quality Parameters on Egyptian Cattle Farm Performance Indicators.

In both beef and dairy farming, the water quality (WQ) is of utmost importance, as it can significantly influence various cattle performance indicators (PIs). This study, conducted in Egyptian cattle farms experiencing emerging epidemics, aimed to scrutinize the impact of WQ on PIs. A comprehensive survey, involving 132 farms, was carried out using a questionnaire to identify hygiene-related risk factors (HRFs) that affect PIs. In parallel, 132 water samples were meticulously collected, subjected to analysis, and statistically evaluated to establish correlations between WQ parameters and PIs. Depending on the studied parameter (pH, total dissolved solids [TDS], hardness, chloride, nitrate, sulphate, total colony count [TCC] and total coliform count [TCFC]), the permissible limits were exceeded in a notable percentage of the water samples (from 13% to 86.3%). These parameters showed a significant correlation (ρ = 0.30-0.64) with feed conversion ratio (FCR) in the case of beef farming, the lowest being for pH (ρ = 0.23). Similarly, significant correlations (ρ = 0.34-0.69) were found with dairy-fed efficiency, apart from pH, which showed no correlation (ρ = 0). Furthermore, specific WQ parameters statistically emerged as predictors for different PIs. High nitrate was the most influential predictor across all beef and dairy PIs, followed by TDS, hardness, sulphate and microbial count. HRFs such as housing system, bedding type, water source, water tank and pipe type, drinker lining, herd size and cattle breed, demonstrated weak to moderate significant correlation with PIs. To conclude, WQ exerts a considerable impact on cattle PIs with the potential influence of on-farm HRFs. As a result, it is imperative to consider WQ when formulating rations, implementing alternative hygienic practices, and selecting appropriate water treatment methods for cattle farming.