Abstract
Colostrum feeding is an integral component of neonatal calf care with many effects on calf health and productivity, yet failure of passive transfer remains common on many dairy farms. A sufficient quantity and quality colostrum must be fed quickly to the newborn calf while minimizing bacterial contamination. Colostrum with a total bacteria count (TBC) >100,000 cfu/ml may impair IgG absorption and contribute to disease. Adenosine triphosphate ATP bioluminescence swabs offer a potential rapid calf-side alternative to traditional bacterial culture. The reagents in the swabs produce a light-generating reaction when in contact with bacterial ade¬ nosine triphosphate, which is quantified in relative light units (RLU) with a luminometer. The objective of this study was to validate the HygienaTM AquaSnap (AS), SuperSnap(SS), PRO-Clean (PC) and MicroSnap (MS) swabs as well as visual hygiene assessment for detection of elevated bacterial counts in or on colostrum-feeding equipment.
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