Abstract
Effects of S fertilization, 0 or 67 kg S/ha, as (NH4)2SO4, as a single or split application on chemical composition, ensiling characteristics and utilization of corn (Zea mays L.) silage by wether lambs was investigated. Corn forages were ensiled at hard-dent stage at 35% dry matter (DM). Sulfur fertilization increased (P less than .01) total S and SO4 but had no effect on N, Mg, Ca or fiber components in silages. Sulfur-fertilized corn silages (N:S = 42 and 43) and non-S fertilized silage (N:S = 62) were fed alone and supplemented with Na2SO4 at two rates to achieve N:S ratios of 12 (high) and 45 (low, to approximate S-fertilized silage), to 30 wether lambs (Suffolk and Dorset crosses) in metabolism and palatability trials. Both trials were randomized complete-block designs. Lambs weighed 36 and 41 kg, respectively. All silages were supplemented with 6.7 g urea/d. Digestibility of DM and cell wall components, and apparent absorption of S and N were increased (P less than .05) by S fertilization and supplementation. Nitrogen retention was increased (P less than .01) by S fertilization and supplementation. Retention was higher (P less than .001) for lambs that were fed S-fertilized silage, compared with supplementation to achieve a similar N:S ratio. It appears that S fertilization was more effective than S supplementation in improving efficiency of N utilization.
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Claims 10
Claim · model-written summary
Sulfur fertilization increased total sulfur and sulfate in corn silage.
- Taxon
- Corn
Zea mays subsp. mayst0 - Treatment
- Sulfur fertilizatione0
- Outcome
- total S and SO4e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfur fertilization increased (P less than .01) total S and SO4 but had no effect on N, Mg, Ca or fiber components in silages”
t0“Corn”
Claim · model-written summary
Sulfur fertilization did not affect nitrogen, magnesium, calcium or fiber components in silage.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Sulfur fertilizatione0
- Outcome
- N, Mg, Ca or fiber componentse0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfur fertilization increased (P less than .01) total S and SO4 but had no effect on N, Mg, Ca or fiber components in silages”
t0“Corn”
Claim · model-written summary
Sulfur fertilization increased dry matter and cell wall digestibility in lambs.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- S fertilizatione0
- Outcome
- Digestibility of DM and cell wall componentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Digestibility of DM and cell wall components, and apparent absorption of S and N were increased (P less than .05) by S fertilization and supplementation”
t0“Corn”
Claim · model-written summary
Sulfur supplementation increased dry matter and cell wall digestibility in lambs.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- supplementatione0
- Outcome
- Digestibility of DM and cell wall componentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Digestibility of DM and cell wall components, and apparent absorption of S and N were increased (P less than .05) by S fertilization and supplementation”
t0“Corn”
Claim · model-written summary
Sulfur fertilization increased apparent sulfur and nitrogen absorption in lambs.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- S fertilizatione0
- Outcome
- apparent absorption of S and Ne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Digestibility of DM and cell wall components, and apparent absorption of S and N were increased (P less than .05) by S fertilization and supplementation”
t0“Corn”
Claim · model-written summary
Sulfur supplementation increased apparent sulfur and nitrogen absorption in lambs.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- supplementatione0
- Outcome
- apparent absorption of S and Ne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Digestibility of DM and cell wall components, and apparent absorption of S and N were increased (P less than .05) by S fertilization and supplementation”
t0“Corn”
Claim · model-written summary
Sulfur fertilization increased nitrogen retention in lambs.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- S fertilizatione0
- Outcome
- Nitrogen retentione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen retention was increased (P less than .01) by S fertilization and supplementation”
t0“Corn”
Claim · model-written summary
Sulfur supplementation increased nitrogen retention in lambs.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- supplementatione0
- Outcome
- Nitrogen retentione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen retention was increased (P less than .01) by S fertilization and supplementation”
t0“Corn”
Claim · model-written summary
Lamb nitrogen retention was higher with sulfur fertilized silage than supplementation at a similar N:S ratio.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- S-fertilized silagee0
- Outcome
- Retentione0
- Direction
- highere0
- Comparator
- supplementation to achieve a similar N:S ratioe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Retention was higher (P less than .001) for lambs that were fed S-fertilized silage, compared with supplementation to achieve a similar N:S ratio”
t0“Corn”
Claim · model-written summary
The authors considered sulfur fertilization more effective than supplementation for nitrogen utilization efficiency.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- S fertilizatione0
- Outcome
- efficiency of N utilizatione0
- Comparator
- S supplementatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It appears that S fertilization was more effective than S supplementation in improving efficiency of N utilization”
t0“Corn”
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