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

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Canadian Quality Milk will reduce the number of environmental bacteria on the teat. Ensure that milking equipment is properly sized, maintained and attached. This will assist in reducing the incidence of bacteria entering the teat end. Follow recommended milking practices procedures to reduce the incidence of bacteria entering teat end and the milk. Use proper post-milking teat dip practices to reduce the spread of bacteria. Treat all quarters with dry cow treatment at drying off to treat existing infections and help prevent new ones. Vaccinate against coliform mastitis to reduce the severity of the impact of clinical mastitis due to coliform bacteria. Ensure ration provides adequate vitamins E and A, beta-carotene, selenium, copper and zinc to help maintain the animals’ resistance to mastitis. 3.2.4.3 Milk Culture A bacterial culture of milk is used to determine which microbe is causing mastitis. This information is essential when developing treatment, control and prevention plans. In herds with a high bulk tank SCC, composite samples of all animals can be cultured or cattle may be selected on the basis of their individual SCC or CMT reaction. In herds with clinical mastitis, milk samples from only the affected quarter can be collected prior to treatment. Samples from these clinical cases can be stored frozen or refrigerated for later culture. It is extremely important to know which microbe is causing mastitis, since different microbes require different treatments and preventive measures. A composite sample is one that contains equal amounts of milk from each quarter. Not all milk samples from cases of contagious or environmental mastitis will give a positive milk culture. In some cases, the milk culture will be negative, even when the milk is visibly abnormal. As long as the milk samples were properly collected and transported to the laboratory, even the negative culture result can provide useful information. The results of bacterial culture should be considered along with other health information, such as individual animal SCC history, age, and stage of lactation ⎯ as well as the production requirements for the farm to decide on appropriate treatment and preventative measures. Occasionally, the culture will need to be repeated, or a special culture technique may be necessary to identify some types of microbes that cause mastitis. Proper collection of the milk sample is essential to ensure a successful milk culture. 3—16 June 2010
Canadian Quality Milk 3.2.4.4 Recommended Procedure for Collecting Composite Milk Samples for Culture 1. Label outside of sterile milk sample vials with a waterproof marker. 2. Wash and dry hands ⎯ use disposable gloves. 3. Wash and dry teats as if preparing for milking or pre-dip teats, allowing up to 30 seconds of contact time before drying with individual towels. 4. Discard 2−3 streams of milk from each teat. 5. Scrub each teat end with an alcohol swab. Scrub the teats furthest away from you first, then the closest teats. 6. Allow a few seconds for the teat ends to dry. 7. Do not touch the inside of the vial or lid. Milk one stream from each teat into the vial. Collect milk from the closest teats first; then collect from the furthest teats. 8. Replace the lid on the vial. 9. Dip teats with an approved dip after collecting the sample. 10. Refrigerate the samples immediately. Check with the lab or your veterinarian to determine if samples should be frozen rather than refrigerated. 11. Pack milk samples so they remain chilled during transport. 12. Ensure the samples reach the laboratory as quickly as possible. See Chapter 11 of the Troubleshooting Guide for additional information on interpreting information about mastitis from individual animals. 3.3 SUMMARY OF HAZARDS AND BEST MANAGEMENT PRACTICES HAZARD SOURCE BEST MANAGEMENT PRACTICES Livestock medicine and chemical residues in meat and milk Broken needles in meat • Any treatments with livestock medicines • Any injectable treatment of livestock medicines CHEMICAL Identify all cattle according to National Livestock Identification (NLID) or Agri-Tracabilité Québec. Identify all cattle (e.g. ear tag) so that treatment records can be maintained. Buy residue-free animals from a reliable source. PHYSICAL Buy animals from a reliable source that do not contain broken needles. June 2010 3—17
Page 1 and 2: Canadian Quality Milk On-Farm Food
Page 3 and 4: Canadian Quality Milk Table of Cont
Page 5 and 6: Canadian Quality Milk PRESIDENT’S
Page 7 and 8: Canadian Quality Milk ABOUT THIS BO
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Page 11 and 12: Canadian Quality Milk program and e
Page 13 and 14: Canadian Quality Milk 1.0 DAIRY FAC
Page 15 and 16: Canadian Quality Milk Introduction
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Page 25 and 26: Canadian Quality Milk WHAT TO DO El
Page 27 and 28: Canadian Quality Milk HAZARD SOURCE
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Page 31 and 32: Canadian Quality Milk Pending: New
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Page 35 and 36: Canadian Quality Milk 3.0 ANIMAL HE
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Page 45 and 46: Canadian Quality Milk 3.2.3 Decreas
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Canadian Quality Milk 7.2 MILK HOUS
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Canadian Quality Milk Retest 1−3
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Canadian Quality Milk HAZARD SOURCE
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Canadian Quality Milk Introduction
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Canadian Quality Milk Introduction
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Canadian Quality Milk 9.3 THE TRAIN
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Canadian Quality Milk 9.4.3 Cooling
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Canadian Quality Milk Reminder: All
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10.2 BMP 5 MILKING MANAGEMENT Canad
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Canadian Quality Milk 10.5 BMP6 FAC
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Canadian Quality Milk Check and re
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Canadian Quality Milk 11.0 MILK AND
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Canadian Quality Milk CAUSES SOLUTI
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Canadian Quality Milk E) MANUAL WAS
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