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Canadian Quality Milk On-Farm Food Safety Program - Centre ...

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<strong>Canadian</strong> <strong>Quality</strong> <strong>Milk</strong><br />

for the periods between acceptable land application times. Inadequate storage may<br />

cause problems with cattle cleanliness.<br />

1.3.3 Nutrient Application<br />

Manure, whether applied as fertilizer or deposited by grazing<br />

cattle, is a source of bacteria, some of which are diseasecausing<br />

organisms.<br />

Some BMPs for applying nutrients for cropland and pastures<br />

are the following:<br />

• Ensure there is enough land to spread all of the stored<br />

manure and milk house wastes.<br />

• Apply nutrients in quantities that crops can use.<br />

• Apply manure when crops can use it (during growing<br />

season).<br />

Clean water is a key element<br />

in ensuring a safe milk<br />

product because it is used to<br />

clean milking equipment.<br />

How you manage wastes may<br />

affect water quality. If<br />

improperly handled, livestock<br />

wastes can pollute surface<br />

water and groundwater. This<br />

can affect not only the<br />

existing livestock operation,<br />

but also other operations and<br />

residences downstream or on<br />

the same aquifer (or system).<br />

• To reduce the risk of run-off and to help protect water sources, do not spread<br />

manure on frozen ground.<br />

• Pre-till land before applying liquid manure on tile drained land.<br />

• Incorporate manure as soon as possible following application.<br />

• Do not apply manure too close to wells, ponds and watercourses.<br />

• Distribute manure evenly over pasture by harrowing after each grazing cycle<br />

• Monitor tile outlets for effluent immediately following application on tile drained<br />

land.<br />

Avoid contamination of feed with pathogenic bacteria. Pathogenic<br />

contamination of feed is usually caused by fouling of feed with manure. Such<br />

diseases as Salmonella and Neospora can be linked to manure-contaminated feed.<br />

Some practices that help avoid feed contamination are:<br />

• If sewage sludge is used, following stated/approved /permitted application and<br />

withdrawal times for grazing or harvesting forage treated with sewage sludge<br />

(hazards include pathogens and heavy metals).<br />

• Ensuring feeding equipment (e.g. front-end loaders) is not contaminated with<br />

manure.<br />

• Avoiding standing or walking in feed bunks. In drive-through feed alleys, do not<br />

step on the feed itself.<br />

• Waiting appropriate time intervals before harvesting or pasturing after applying<br />

manure. There are a variety of factors to consider such as:<br />

- Volume of manure spread.<br />

- Weather.<br />

- Soil type.<br />

- Crop/forage.<br />

1—10<br />

June 2010

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