Paper · 2006 · Journal of the Science of Food and Agriculture

Effect of the stage of growth, wilting and inoculation in field pea (Pisum sativum L.) silages. II. Nitrogen fractions and amino acid compositions of herbage and silage

Laura Cavallarin; Sara Antoniazzi; Ernesto Tabacco; et al.

7
claims
28
verbatim quotes
12
citations
2
research areas
—
Not open access

Abstract

Abstract The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy. Semi‐leafless field peas were harvested at four progressive morphological stages (end of flowering, I; beginning of pod filling, II; advanced pod filling, III; beginning of ripening, IV). For each stage of growth, the herbage was field wilted to a dry matter (DM) content around 330 g kg −1 . The unwilted and wilted herbages were ensiled with (I) and without (C) a lactic acid bacteria (LAB) inoculant. The stage of growth significantly affected all the nitrogen fraction concentrations both in herbage and in silage. Extensive proteolysis took place in silages made at early morphological stages and characterised by a high crude protein content (around 240 g kg −1 DM), as shown by the non‐protein nitrogen (NPN) value (around 700 g kg −1 total N or higher). Neither inoculum nor wilting helped to reduce the protein degradation in these silages. The level of proteolysis was reduced in silages made from the pod filling stage onwards where most of the protein was localised in the seed and a better fermentation pattern was observed. The amino acid (AA) composition of silages made at stage IV was close to that of fresh herbage, with minimal losses of nutritionally essential amino acids for ruminants. Copyright © 2006 Society of Chemical Industry

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Claims 7

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Growth stage significantly affected all nitrogen fraction concentrations in herbage and silage.

Taxon
field peae1
Organ / stage
stage of growthe0
Outcome
nitrogen fraction concentrationse0

Not reportedDirection

Verbatim

e0

“The stage of growth significantly affected all the nitrogen fraction concentrations both in herbage and in silage”

✓ located verbatim in the source · abstract, characters 587–700 · show in text ↑
e1

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
e2

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 58–67 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Early-stage silages with high crude protein underwent extensive proteolysis and had NPN around 700 g kg −1 total N or higher.

Taxon
field peae1
Organ / stage
early morphological stagese0
Outcome
non‐protein nitrogen (NPN) valuee0
Value
around 700 g kg −1 total N or highere0
Qualifier
around 240 g kg −1 DMe0

Verbatim

e0

“Extensive proteolysis took place in silages made at early morphological stages and characterised by a high crude protein content (around 240 g kg −1 DM), as shown by the non‐protein nitrogen (NPN) value (around 700 g kg −1 total N or higher)”

✓ located verbatim in the source · abstract, characters 702–943 · show in text ↑
e1

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
e2

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 58–67 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Inoculant did not reduce protein degradation in early-stage silage.

Taxon
field peae1
Treatment
inoculume0
Outcome
protein degradatione0
Direction
Neithere0

Not reportedComparator

Verbatim

e0

“Neither inoculum nor wilting helped to reduce the protein degradation in these silages”

✓ located verbatim in the source · abstract, characters 945–1031 · show in text ↑
e1

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
e2

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 58–67 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Wilting did not reduce protein degradation in early-stage silage.

Taxon
field peae1
Treatment
wiltinge0
Outcome
protein degradatione0
Direction
Neithere0

Not reportedComparator

Verbatim

e0

“Neither inoculum nor wilting helped to reduce the protein degradation in these silages”

✓ located verbatim in the source · abstract, characters 945–1031 · show in text ↑
e1

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
e2

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 58–67 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Silage made from pod filling onward showed less proteolysis.

Taxon
field peae1
Organ / stage
pod filling stage onwardse0
Outcome
level of proteolysise0
Direction
reducede0

Verbatim

e0

“The level of proteolysis was reduced in silages made from the pod filling stage onwards”

✓ located verbatim in the source · abstract, characters 1033–1120 · show in text ↑
e1

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
e2

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 58–67 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Silage made from pod filling onward showed a better fermentation pattern.

Taxon
field peae1
Outcome
fermentation patterne0
Direction
bettere0

Verbatim

e0

“a better fermentation pattern was observed”

✓ located verbatim in the source · abstract, characters 1177–1219 · show in text ↑
e1

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
e2

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 58–67 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Stage IV silage amino acid composition was close to fresh herbage, with minimal essential amino acid losses.

Taxon
field peae1
Organ / stage
stage IVe0
Outcome
amino acid (AA) compositione0
Direction
close toe0
Comparator
fresh herbagee0

Verbatim

e0

“The amino acid (AA) composition of silages made at stage IV was close to that of fresh herbage, with minimal losses of nutritionally essential amino acids for ruminants”

✓ located verbatim in the source · abstract, characters 1221–1389 · show in text ↑
e1

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
e2

“The aim of the study was to investigate the effects of stage of maturity, wilting and inoculant application on proteolysis in field pea herbage and silage in northern Italy.”

✓ located verbatim in the source · abstract, characters 9–182 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 58–67 · show in text ↑

inoculation · quality: protein · Lathyrus oleraceus (pea)Positive and negative results

22 papers: 18 positive, 4 negative or no effect

3 papers in the same direction as this paper · 18 in the opposite direction

  1. no effect
  2. positive
  3. positive

18 papers more in this group

See all 22 papers →

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.