Copper source2 | Copper level, mg/kg | Pooled SEM | P-value |
---|
0 | 5 | 10 | 20 | 40 | 80 | 160 | 200 | Treatment | Linear | Quadratic |
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TBCC | 43.6a | 44.0a | 43.4a | 41.6a | 38.4ab | 35.8b | 36.0b | 35.2b | 2.02 | 0.035 | 0.153 | 0.021 |
CuPro | 43.6a | 43.0a | 44.0a | 40.0b | 39.8b | 32.8c,* | 35.2c | – | 2.24 | 0.015 | 0.037 | 0.168 |
- a-c Means within a row without a common superscript letter are different (P < 0.05)
- * different from the corresponding TBCC group at the same supplemented copper level, P < 0.05
- 1 Diarrhea score = 5, watery diarrhea, 4, severe diarrhea, 3, mild diarrhea, 2, moist feces, and 1, normal feces. Frequency of diarrhea was calculated by adding all days for a pig with a score of 3 or greater. Frequency = numbers of pigs with diarrhea / (numbers of pigs × the number of days assessing diarrhea scores) × 100%, the number of days assessing diarrhea scores = 9
- 2TBCC  tribasic copper chloride, CuPro  copper proteinate