The effect of forage maize hybrid type on in vivo and in vitro dry matter digestibility

The digestibility values of forages have long been recognised as an important parameter affecting both milk yield and growth of ruminants. Several methods (in vivo and in vitro) are used to determine digestibility of forages. The aim of this experiment was to determine the effect of chemical composition of silages on the in vivo and in vitro DMD of maize silages.

In Vivo Nylon Bag vs. Two‐Stage In Vitro Digestion: Comparison of Two Techniques for Estimating Dry‐Matter Digestibility of Forages 1

Agronomy Journal ◽

10.2134/agronj1969.00021962006100040032x ◽

1969 ◽

Vol 61 (4) ◽

pp. 587-589 ◽

Cited By ~ 30

Author(s):

W. G. Manson ◽

R. S. Lowrey ◽

Ian Forbes

Keyword(s):

Dry Matter ◽

In Vitro Digestion ◽

Two Stage ◽

Chemical composition, in vitro dry matter digestibility and in sacco degradability of selected browse species used as animal feeds under semi-arid conditions in Northern Ethiopia

Agroforestry Systems ◽

10.1007/s10457-010-9295-x ◽

2010 ◽

Vol 80 (2) ◽

pp. 173-184 ◽

Cited By ~ 10

Author(s):

Solomon Melaku ◽

Teferi Aregawi ◽

Lisanework Nigatu

Keyword(s):

Chemical Composition ◽

Dry Matter ◽

Northern Ethiopia ◽

Arid Conditions ◽

Browse Species ◽

Semi Arid ◽

In Sacco Degradability ◽

In Sacco

Differences between the in vitro digestibility of extrusa collected from oesophageal fistulated steers and the forage consumed

Animal Production Science ◽

10.1071/ea08285 ◽

2009 ◽

Vol 49 (7) ◽

pp. 563 ◽

Cited By ~ 3

Author(s):

David B. Coates ◽

Robert J. Mayer

Keyword(s):

Dry Matter ◽

Rumen Fluid ◽

In Vitro Digestibility ◽

In Vitro Techniques ◽

Pasture Legumes ◽

Significant Difference ◽

C3 Grasses

In a study that included C4 tropical grasses, C3 temperate grasses and C3 pasture legumes, in vitro dry matter digestibility of extrusa, measured as in vitro dry matter loss (IVDML) during incubation, compared with that of the forage consumed, was greater for grass extrusa but not for legume extrusa. The increase in digestibility was not caused by mastication or by the freezing of extrusa samples during storage but by the action of saliva. Comparable increases in IVDML were achieved merely by mixing bovine saliva with ground forage samples. Differences were greater than could be explained by increases due to completely digestible salivary DM. There was no significant difference between animals in relation to the saliva effect on IVDML and, except for some minor differences, similar saliva effects on IVDML were measured using either the pepsin–cellulase or rumen fluid–pepsin in vitro techniques. For both C4 and C3 grasses the magnitude of the differences were inversely related to IVDML of the feed and there was little or no difference between extrusa and feed at high digestibilities (>70%) whereas differences of more than 10 percentage units were measured on low quality grass forages. The data did not suggest that the extrusa or saliva effect on digestibility was different for C3 grasses than for C4 grasses but data on C3 grasses were limited to few species and to high digestibility samples. For legume forages there was no saliva effect when the pepsin–cellulase method was used but there was a small but significant positive effect using the rumen fluid–pepsin method. It was concluded that when samples of extrusa are analysed using in vitro techniques, predicted in vivo digestibility of the feed consumed will often be overestimated, especially for low quality grass diets. The implications of overestimating in vivo digestibility and suggestions for overcoming such errors are discussed.

Chemical composition, in vitro dry matter digestibility and in vitro gas production of five woody species browsed by Matebele goats (Capra hircus L.) in a semi-arid savanna, Zimbabwe

Animal Feed Science and Technology ◽

10.1016/j.anifeedsci.2011.07.013 ◽

2011 ◽

Vol 170 (1-2) ◽

pp. 122-125 ◽

Cited By ~ 11

Author(s):

A. Sebata ◽

L.R. Ndlovu ◽

J.S. Dube

Keyword(s):

Chemical Composition ◽

Dry Matter ◽

Woody Species ◽

Gas Production ◽

Capra Hircus ◽

In Vitro Gas Production ◽

Semi Arid

Effects of Geraniol and Camphene on in Vitro Rumen Fermentation and Methane Production

Scientia Agriculturae Bohemica ◽

10.1515/sab-2017-0012 ◽

2017 ◽

Vol 48 (2) ◽

pp. 63-69

Author(s):

M. Joch ◽

V. Kudrna ◽

B. Hučko

Keyword(s):

Methane Emission ◽

Methane Production ◽

Dry Matter ◽

Volatile Fatty Acids ◽

Rumen Fluid ◽

Positive Control ◽

Rumen Fermentation ◽

AbstractThe objective of this study was to determine the effects of geraniol and camphene at three dosages (300, 600, and 900 mg l-1) on rumen microbial fermentation and methane emission in in vitro batch culture of rumen fluid supplied with a 60 : 40 forage : concentrate substrate (16.2% crude protein, 33.1% neutral detergent fibre). The ionophore antibiotic monensin (8 mg/l) was used as positive control. Compared to control, geraniol significantly (P < 0.05) reduced methane production with increasing doses, with reductions by 10.2, 66.9, and 97.9%. However, total volatile fatty acids (VFA) production and in vitro dry matter digestibility were also reduced (P < 0.05) by all doses of geraniol. Camphene demonstrated weak and unpromising effects on rumen fermentation. Camphene did not decrease (P > 0.05) methane production and slightly decreased (P < 0.05) VFA production. Due to the strong antimethanogenic effect of geraniol a careful selection of dose and combination with other antimethanogenic compounds may be effective in mitigating methane emission from ruminants. However, if a reduction in total VFA production and dry matter digestibility persisted in vivo, geraniol would have a negative effect on animal productivity.

Effect of exposure on the chemical composition and in vitro dry matter digestibility of untreated and formalin treated green chop

Animal Feed Science and Technology ◽

10.1016/0377-8401(93)90053-m ◽

1993 ◽

Vol 44 (3-4) ◽

pp. 275-280 ◽

Cited By ~ 3

Author(s):

L.D. Snyman

Keyword(s):

Chemical Composition ◽

Dry Matter ◽

0643 Compost inclusion level in soil on chemical composition and in vitro dry matter digestibility of native and improved cactus forage varieties

Journal of Animal Science ◽

10.2527/jam2016-0643 ◽

2016 ◽

Vol 94 (suppl_5) ◽

pp. 307-307

Author(s):

J. A. Santos-Haliscak ◽

J. Kawas ◽

H. Fimbres-Durazo ◽

G. Moreno-Degollado ◽

R. E. Vázquez-Alvarado ◽

...

Keyword(s):

Chemical Composition ◽

Dry Matter ◽

Inclusion Level

Changes in feed intake and digestibility in sheep given virginiamycin

Australian Journal of Agricultural Research ◽

10.1071/ar9960539 ◽

1996 ◽

Vol 47 (4) ◽

pp. 539 ◽

Cited By ~ 1

Author(s):

GR Thorniley ◽

MD Boyce ◽

JB Rowe

Keyword(s):

Feed Intake ◽

Dry Matter ◽

Highly Correlated

An experiment was conducted to investigate why virginiamycin reduces feed intake when it is first included in diets fed to sheep and cattle. Sheep were dosed daily with various amounts of virginiamycin, and measurements were made of both in vitro and in vivo dry matter digestibility and of blood gastrin concentrations. Virginiamycin decreased feed intake and there was some evidence that the effect was dose related. Dry matter digestibility was reduced by doses of virginiamycin >80 mg/day. Although highly correlated with feed intake, digestibility did not seem to be the sole factor influencing feed intake. Blood gastrin concentration was not significantly affected by virginiamycin and was not correlated with feed intake.

Chemical composition and in vitro dry matter digestibility of lichens

Rangifer ◽

10.7557/2.6.1.569 ◽

1986 ◽

Vol 6 (2) ◽

pp. 8 ◽

Cited By ~ 3

Author(s):

Torstein H. Garmo

Keyword(s):

Chemical Composition ◽

Crude Protein ◽

Dry Matter ◽

Crude Fibre ◽

In Vitro Method ◽

Protein 4.2 ◽

The Mean

The chemical composition and in vitro dry matter digestibility of 45 samples of different species of lichen are reported. Mean content (g/100 g dry matter) of the main nutrients was: crude protein 4.2, crude fat 3.2, crude fibre 16.6, ash 1.9, Ca 0.15, P 0.09, Mg 0.05, K 0.13, Na 0.035, S 0.07. The content of microminerals (mg/kg dry matter) was: Cu 2.5, Mo 0.11, Zn 27.2, Se 0.12, Fe 898, Mn 154. The mean in vitro dry matter digestibility was 35%. However, the in vitro method do underestimate the dry matter digestibility of lichens. Stereocaulon spp. showed higher levels of crude protein, P, S, Cu and Mo than Cetraria spp. and Cladonia spp. Cetraria nivalis showed higher digestibility and contained more NFE, ash, Ca, Mg, but less crude fibre than Cladonia stellaris. Lichens contained less amounts of most nutrients compared with grasses (Fig. 1), exept for crude fat, NFE, Se and Fe.Kjemisk innhald og in vitro fordøyelsesgrad av lav.Abstract in Norwegian / Samandrag: Kjemisk innhald og in vitro fordøyelsesgrad av tørrstoffet er bestemt i 45 prøver av beitelav frå to stader i Sør-Noreg. Middel innhald (g/100g tørrstoff) av følgjande næringsstoff var: protein 4.2, feitt 3.2, trevlar 16.6, oske 1.9, kalsium 0.15, fosfor 0.09, magnesium 0.05, kalium 0.13, natrium 0.035, svovel 0.07. Innhaldet (mg/kg tørrstoff) av mikronæringsstoffa var: kopar 2.5, molybden 0.11, sink 27.2, selen 0.12, jern 898 og mangan 154. Den midlare fordøyelsesgraden av tørrstoffet i lav-prøvene var 35%, men in vitro fordøyelsesanalyser undervurderer fordøyelsesgraden av lav. Det var ein stor variasjon mellom dei ulike lavartane for dei fleste næringsstoffa og fordøyelsesgraden. Stereocaulon spp. inneheldt meir protein, fosfor, svovel, kopar og molybden enn Cetraria spp. og Cladonia spp. Gulskinn hadde høgare fordøyelsesgrad, og innehaldet av NFE, oske, kalsium og magnesium var høgre enn i kvitkrull, medan trevleinnhaldet var størst i kvitkrull. Lav inneheldt mindre av dei fleste næringsstoffa samanlikna med gras, unnateke feitt, NFE, selen og jern.Jäkälien kemiallinen sisältö ja in vitro sulatuksen aste.Abstract in Finnish / Yhteenveto: Kuiva-aineen kemiallinen sisalto ja in vitro sulatusaste on mååråtty 45:ssa kokeessa tårkeistå laidunjåkålistå kahdella paikkakunnalla Etelå — Norjassa. Keskimååråinen sisalto (g/100 g kuiva-ainetta) seuraavissa ravintoaineissa oli: valkuaisainetta 4.2, rasvaa 3.2, kuituja 16.6, tuhkaa 1.9, kalsiumia 0.15, fosforia 0.09, magnesiumia 0.05, kaliumia 0.13, natriumia 0.035, rikkia 0.07. Hivenainepitoisuus (mg/kg kuiva-ainesta) oli: kuparia 2.5, molybdeenia 0.11, sinkkia 27.2, seleeniå 0.12, rautaa 898 ja mangaania 154. Kuiva-aineiden keskimååråinen sulatusaste jåkålåkokeissa oli 35%. Eri jåkålåajien vålillå oli suuri vaihtelu eisimmissa ravintoaineissa ja sulatusasteessa. Stereocaulon spp. sisålsi enemmån valkuaisainetta, fosforia, rikkiå kuparia ja typettomien uuteaineiden, molybdeeniå kuin Cetraria spp. ja Cladonia spp. Lapalumijåkålållå oli korkeampi sulatusaste, ja tuhkan, kalsiumin ja magnesiumin sisålto oli korkeampi kuin Cladonia alpestris-jäkälässä, mutta kuitusisålto oli korkein Cladonia alpestris-jäkälässä. Jåkålå sisålsi våhemmån useimmista ravintoaineista ruohoon verrattuna lukuunottamatta rasvaa, typettomiå uuteaineita, seleeniå ja rautaa.