Abstract
Abstract An animal feeding study was conducted to measure the effects of feeding corn ( Zea mays L.) silage grown on sludge‐amended vs. conventionally fertilized soil on the performance of dairy goats ( Capra hircus ) and market lambs ( Ovis aries ). Annual applications of 0, 15, 30, and 45 Mg/ha of sewage sludge (105–186 mg Cd/kg) produced corn silage that contained high levels of bioaccumulated Cd (5.26 mg/kg, year III). Zinc accumulated in the silage to a lesser extent, which resulted in undesirably low Zn/Cd ratios. In vitro digestible dry matter, cell wall constituents, acid detergent fiber and lignin, and silica accumulation were not affected by sludge fertilization. Dry matter intake, daily milk production, and feed efficiency of dairy goats were not affected by 3 y of continuous consumption of high Cd silage. Market lambs fed sludge‐fertilized corn silage tended ( P < 0.05, year II) to have higher daily gains than did those fed control silage, whereas feed efficiency (kilograms gain ÷ kilograms feed) was not affected by sludge fertilization.
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Claims 3
Claim · model-written summary
Sludge amendment produced corn silage with high cadmium accumulation.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- sewage sludgee0
- Outcome
- bioaccumulated Cde0
- Direction
- high levelse0
- Value
- 5.26 mg/kge0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Annual applications of 0, 15, 30, and 45 Mg/ha of sewage sludge (105–186 mg Cd/kg) produced corn silage that contained high levels of bioaccumulated Cd (5.26 mg/kg, year III).”
Claim · model-written summary
Zinc accumulated less than cadmium in silage, producing low zinc to cadmium ratios.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- Zn/Cd ratiose0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc accumulated in the silage to a lesser extent, which resulted in undesirably low Zn/Cd ratios.”
t0“Corn”
Claim · model-written summary
Sludge fertilization did not affect in vitro digestible dry matter or measured fiber and silica properties.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- sludge fertilizatione0
- Outcome
- In vitro digestible dry matter, cell wall constituents, acid detergent fiber and lignin, and silica accumulatione0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In vitro digestible dry matter, cell wall constituents, acid detergent fiber and lignin, and silica accumulation were not affected by sludge fertilization.”
t0“Corn”
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organic · nutrient: content · Zea mays (maize)Positive and negative results
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.