Practical Approaches for Managing Stock Water - CE Quiz

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* 1. Please enter your information

Full Name, Credentials *

Practice Name

Province (NO abbreviations please) *

Email Address *

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* 2. Which of the following health outcomes is not identified in the webinar as a consequence of poor water quality in cattle?

Reduced calf weaning weights

Increased disease risk

Higher rates of lameness

Sudden death on pasture

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* 3. According to the webinar, what percentage of Canadian cow‑calf producers had never tested their water in the previous three years?

25%

28%

50%

62%

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* 4. Blue‑green algae toxicity primarily affects cattle through which mechanism?

Destruction of red blood cells

Production of hepatotoxic or neurotoxic compounds

Impairment of reproductive cycling

Blockage of mineral absorption in the rumen

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* 5. When treating a dugout containing blue‑green algae with copper sulfate, why must producers exercise caution?

Copper sulfate evaporates rapidly in hot temperatures

Treatment increases nitrate concentrations

The dying cyanobacteria release toxins that temporarily worsen toxicity

Copper sulfate decreases water pH to harmful levels

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* 6. High sulfate water is strongly associated with which of the following conditions in cattle?

Vitamin E toxicity

Polioencephalomalacia (PEM)

Chronic laminitis

Excessive weight gain

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* 7. What is the primary reason high sulfate water contributes to copper deficiency?

Sulfates increase fecal loss of copper

Sulfates bind copper in the rumen, preventing absorption

Sulfates increase urinary excretion of copper

Sulfates destroy copper during digestion

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* 8. Based on research referenced in the webinar, why is free‑choice mineral supplementation unreliable for ensuring adequate copper intake?

Mineral content varies by manufacturer

The mineral degrades when exposed to sunlight

Only a portion of the herd typically visits mineral feeders consistently

Minerals are less stable when mixed with salt

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* 9. Which sample type is recommended when producers need to fine‑tune and optimize copper status in herds receiving consistent mineral intake?

Fecal samples

Serum samples

Liver biopsies

Milk samples

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* 10. According to producer experience shared in the webinar, which indicator often signaled a dugout had become unsafe before testing confirmed it?

Change in water colour

Absence of wildlife tracks around the water source

Presence of foam on the surface

Increased mosquito activity

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* 11. Which tool was recommended in the webinar as an on‑farm screening method to help determine when laboratory water testing is necessary?

Handheld sulfate colorimetric strips

Portable mass spectrometer

Electrical conductivity (EC) meter

Hydrometer