Abstract
Abstract Background Limited information is available regarding the nutritive value and structural characteristics of multispecies swards when rotationally grazed. Methods Three farmlet types were investigated in terms of their nutritive value: Lolium perenne (LP); L. perenne + Trifolium repens (LP+TR); and a multispecies sward containing grasses, legumes and herbs (MSS). Farmlets were stocked with beef steers (2.5 livestock units ha −1 ), grazed on a 1 ha scale to 6 cm (MSS) and 4 cm (LP and LP+TR) residuals. Results A greater ash concentration was found in MSS than LP (84 vs. 75 g kg −1 DM). Both LP+TR and MSS had higher crude protein and lower neutral detergent fibre concentrations than LP. The relative ranking of water soluble carbohydrate and dry matter (DM) concentration was LP > LP+TR > MSS. Despite the leaf component of the LP farmlet contributing more to herbage DM, the organic matter digestibilities of the swards were similar. Conclusions The MSS and LP+TR farmlets achieved similar forage quality under intensive grazing to LP. However, it is worth noting that MSS had a higher concentration of acid detergent lignin, which can negatively impact digestibility. Further investigation is needed to determine optimal grazing management practices that can minimise the effects of higher lignin concentration on digestibility in multispecies swards.
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Claims 10
Claim · model-written summary
Multispecies swards had greater ash concentration than ryegrass swards, 84 versus 75 g kg −1 DM.
- Taxon
- perennial ryegrass
Lolium perennet0 - Material
- MSSe0
- Outcome
- ash concentratione0
- Direction
- greatere0
- Value
- 84 vs. 75 g kg −1 DMe0
- Comparator
- LPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nutritive value of perennial ryegrass,”
e0“A greater ash concentration was found in MSS than LP (84 vs. 75 g kg −1 DM)”
Claim · model-written summary
LP+TR had higher crude protein than LP.
- Taxon
- perennial ryegrassLolium perennet0
- Material
- LP+TRe0
- Outcome
- crude proteine0
- Direction
- highere0
- Comparator
- LPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nutritive value of perennial ryegrass,”
e0“Both LP+TR and MSS had higher crude protein and lower neutral detergent fibre concentrations than LP”
Claim · model-written summary
LP+TR had lower neutral detergent fibre concentrations than LP.
- Taxon
- perennial ryegrassLolium perennet0
- Material
- LP+TRe0
- Outcome
- neutral detergent fibre concentrationse0
- Direction
- lowere0
- Comparator
- LPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nutritive value of perennial ryegrass,”
e0“Both LP+TR and MSS had higher crude protein and lower neutral detergent fibre concentrations than LP”
Claim · model-written summary
MSS had higher crude protein than LP.
- Taxon
- perennial ryegrassLolium perennet0
- Material
- MSSe0
- Outcome
- crude proteine0
- Direction
- highere0
- Comparator
- LPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nutritive value of perennial ryegrass,”
e0“Both LP+TR and MSS had higher crude protein and lower neutral detergent fibre concentrations than LP”
Claim · model-written summary
MSS had lower neutral detergent fibre concentrations than LP.
- Taxon
- perennial ryegrassLolium perennet0
- Material
- MSSe0
- Outcome
- neutral detergent fibre concentrationse0
- Direction
- lowere0
- Comparator
- LPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nutritive value of perennial ryegrass,”
e0“Both LP+TR and MSS had higher crude protein and lower neutral detergent fibre concentrations than LP”
Claim · model-written summary
water soluble carbohydrate ranked LP above LP+TR above MSS.
- Taxon
- perennial ryegrassLolium perennet0
- Outcome
- water soluble carbohydratee0
- Direction
- LP > LP+TR > MSSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nutritive value of perennial ryegrass,”
e0“The relative ranking of water soluble carbohydrate and dry matter (DM) concentration was LP > LP+TR > MSS”
Claim · model-written summary
dry matter (DM) concentration ranked LP above LP+TR above MSS.
- Taxon
- perennial ryegrassLolium perennet0
- Outcome
- dry matter (DM) concentratione0
- Direction
- LP > LP+TR > MSSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nutritive value of perennial ryegrass,”
e0“The relative ranking of water soluble carbohydrate and dry matter (DM) concentration was LP > LP+TR > MSS”
Claim · model-written summary
The LP farmlet had more leaf contribution to herbage dry matter.
- Taxon
- perennial ryegrassLolium perennet0
- Outcome
- leaf component of the LP farmlet contributing more to herbage DMe0
- Direction
- moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nutritive value of perennial ryegrass,”
e0“the leaf component of the LP farmlet contributing more to herbage DM”
Claim · model-written summary
Organic matter digestibility was similar across swards.
- Taxon
- perennial ryegrassLolium perennet0
- Outcome
- organic matter digestibilitiese0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nutritive value of perennial ryegrass,”
e0“the organic matter digestibilities of the swards were similar”
Claim · model-written summary
MSS had a higher acid detergent lignin concentration.
- Taxon
- perennial ryegrassLolium perennet0
- Material
- MSSe0
- Outcome
- concentration of acid detergent lignine0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nutritive value of perennial ryegrass,”
e0“MSS had a higher concentration of acid detergent lignin”