Water quality II: The effect of water nitrate and bacteria on broiler growth performance

Journal of Applied Poultry Research

Volumn 6, Issue 1, 1997, Pages 48-55

  Grizzle, J M ^a   Armbrust, T A ^a   Bryan, M A ^a   Saxton, A M ^a  

^a UNIVERSITY OF TENNESSEE   (United States)

Author keywords

Broiler; E. coli; Ent. cloacae; Nitrate; Water quality

Indexed keywords

BACTERIA (MICROORGANISMS); ENTEROBACTER; ENTEROBACTER CLOACAE; ESCHERICHIA COLI; GALLUS GALLUS;

EID: 0031482060     PISSN: 10566171     EISSN: None     Source Type: Journal    
DOI: 10.1093/japr/6.1.48     Document Type: Article

References (19)

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9. Bacterial stocks were grown daily from overnight cultures, and were counted by spectrophotometric methods. Water samples were collected once each week, and cultured on Tryptic Soy Agar or Violet Red Bile Agar with Mug (Difco, Detroit, MI) for Ent. cloacae or E. coli enumeration respectively. Bacterial identification was further verified by the API 20E kit (BioMerieux Vitek, Hazelwood, MO). Prior to the initiation of the experiment, recovery rate of inoculated bacteria at the nipple drinker was tested. It was determined that an inoculation rate of 250 CFU/mL E. coli and 100 CFU /mL Ent. cloacae resulted in a delivery rate of 40-60 CFU/mL at the drinker 24 hr later. This delivery target of 40-60 CFU/mL was based on the finding of Burcham et al. [19], who reported an average coliform count of 39 CFU/mL on Tennessee poultry farms. After the first week of the experiment, the inoculation rate of E. coli was raised to 500 CFU/mL due to the low recovery rate at the drinker.
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15. The source of the nitrate-nitrogen added to the water supply was sodium nitrate which is highly soluble in water. We believe that addition of sodium from this source caused an increase in water consumption.
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