scholarly journals Indigestible dry matter as internal marker to estimate digestibility in grazing sheep

1995 ◽  
Vol 1995 ◽  
pp. 122-122
Author(s):  
M. D. Villalbal ◽  
T. Castro ◽  
A.R. Mantecón ◽  
T. Manso ◽  
M. Riesgo ◽  
...  
Keyword(s):  
Dry Matter ◽  
Sampling Period ◽  
Dry Matter Digestibility ◽  
Sward Height ◽  
Grazing Sheep ◽  
Internal Marker

The use of Indigestible Dry Matter (IDM) has been proposed to be used as internal marker to estimate digestibility (Milne, 1977, Kotb and Luckey, 1972), but information of reliability of this marker is limited.The aim of this experiment was to study the effect of sward height and sampling period on Dry-Matter Digestibility of pasture (DMD), using IDM as internal marker.

scholarly journals Indigestible dry matter as internal marker to estimate digestibility in grazing sheep

1995 ◽  
Vol 1995 ◽  
pp. 122-122
Author(s):  
M. D. Villalbal ◽  
T. Castro ◽  
A.R. Mantecón ◽  
T. Manso ◽  
M. Riesgo ◽  
...  
Keyword(s):  
Dry Matter ◽  
Sampling Period ◽  
Dry Matter Digestibility ◽  
Sward Height ◽  
Grazing Sheep ◽  
Internal Marker

The use of Indigestible Dry Matter (IDM) has been proposed to be used as internal marker to estimate digestibility (Milne, 1977, Kotb and Luckey, 1972), but information of reliability of this marker is limited.The aim of this experiment was to study the effect of sward height and sampling period on Dry-Matter Digestibility of pasture (DMD), using IDM as internal marker.

scholarly journals Digestibility markers of sheep diets containing hydrolyzed sugarcane-top hay

2017 ◽  
Vol 18 (1) ◽  
pp. 38-49 ◽  
Author(s):  
Miguel Arcanjo MOREIRA FILHO ◽  
Arnaud Azevêdo ALVES ◽  
Bruno Spíndola GARCEZ ◽  
Antonia Leidiana MOREIRA ◽  
Danielle Maria Machado Ribeiro AZEVÊDO ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Chromium Oxide ◽  
Dry Matter ◽  
Live Weight ◽  
Neutral Detergent Fiber ◽  
Acid Detergent Fiber ◽  
Collection Method ◽  
Dry Matter Digestibility ◽  
Internal Marker ◽  
Male Sheep

SUMMARY This experiment evaluated the correlation between the estimates of fecal digestibility and dry matter digestibility (DMD) and nutrients obtained using internal (indigestibles dry materiDM, neutral detergent fiber-iNDF, acid detergent fiber-iADF and acid detergent ligniniADL) and external (chromium oxide-Cr2O3, titanium dioxide-TiO2, and purified and enriched lignin from eucalyptus-LIPE®) markers and the values obtained by the total feces collection method. Twenty uncastrated male sheep, with 29.64±5.53 kg average live weight; approximately 12 months old, were kept in metabolic cages and fed diets containing untreated sugarcane-top hay or sugarcane-top hay hydrolyzed with 3 and 6% urea or 1.5 and 3% calcium oxide (CaO). There was a positive correlation (P<.05) between the fecal production estimated by the markers and via total feces collection, with coefficients higher than 90% for iDM, Cr2O3, and TiO2. The DMD and nutrients estimated with the use of markers was positively correlated (P<.05) with that obtained by total feces collection. Coefficients of correlation for digestibility obtained by total collection were higher than those obtained with Cr2O3, but close to those obtained using TiO2. The coefficient of correlation between the digestibility of protein and fiber fraction estimated with iDM and iNDF and that obtained by total collection was higher than 70%. Internal marker iDM and external markers Cr2O3 and TiO2 are effective in estimating fecal production and DMD and nutrients.

scholarly journals Effect of Sward Height on Rumen Degradation in Merino Grazing Sheep

1993 ◽  
Vol 1993 ◽  
pp. 180-180
Author(s):  
A.R. Mantecón ◽  
M.D. Carro ◽  
F.J. Giráldez ◽  
M.J. Ranilla ◽  
P.R. Revesado ◽  
...  
Keyword(s):  
Dry Matter ◽  
Rumen Fermentation ◽  
Sheep Grazing ◽  
Merino Sheep ◽  
Rumen Degradation ◽  
Sward Height ◽  
Grazing Sheep

It is now well established that the height of the sward grazed by sheep has a large effect on their performance (Hodgson, Mackie and Parker, 1986). However, there is a scarce of information about the rumen fermentation in sheep grazing at different sward heights. The aim of this experiment was to study the effect of sward height (4 vs 6 cm) on the rumen fermentation in Merino sheep which were continuously maintained on the pasture.The study was carried out on a continuously stocked pasture in August 1992. Twenty mature Merino sheep were used to obtain two different sward heights: 4 cm (low; LSH) and 6 cm (high; HSH). Sward height was measured twice weekly using a swardstick and was controlled by the addition and removal of sheep. Herbage mass was of 633 and 1397 kg of dry matter (DM)/Ha for the LSH and HSH paddocks, respectively.

The use of indigestible acid detergent fibre as a digestibility marker for dairy cows fed ad libitum grass silage with three concentrate levels

1984 ◽  
Vol 1984 ◽  
pp. 127-127
Author(s):  
E.A. Dodsworth ◽  
R.H. Phipps ◽  
J.A. Bines
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Concentrate Supplementation ◽  
Dairy Heifers ◽  
Grass Silage ◽  
Dry Matter Digestibility ◽  
Acid Detergent Fibre ◽  
Ad Libitum ◽  
Internal Marker

Estimates of organic matter digestibility derived from the concentration of indigestible acid detergent fibre CIADF) in the diet and the faeces compared favourably with in vivo values when a variety of forages was fed to wether sheep (Penning and Johnson, 19B3). The purpose of this trial was to evaluate IADF as an internal marker to estimate dry matter digestibility (DMD) of lactating dairy heifers fed ad libitum grass silage with one of three levels of concentrate supplementation.

The role of silicon in forages: A quantitative X-Ray study

1987 ◽  
Vol 45 ◽  
pp. 416-417
Author(s):  
Janet H. Woodward ◽  
D. E. Akin
Keyword(s):  
Sodium Acetate ◽  
Dry Matter ◽  
Acetate Buffer ◽  
Plant Tissues ◽  
Sodium Acetate Buffer ◽  
X Ray ◽  
Dry Matter Digestibility ◽  
Percent Composition

Silicon (Si) is distributed throughout plant tissues, but its role in forages has not been clarified. Although Si has been suggested as an antiquality factor which limits the digestibility of structural carbohydrates, other research indicates that its presence in plants does not affect digestibility. We employed x-ray microanalysis to evaluate Si as an antiquality factor at specific sites of two cultivars of bermuda grass (Cynodon dactvlon (L.) Pers.). “Coastal” and “Tifton-78” were chosen for this study because previous work in our lab has shown that, although these two grasses are similar ultrastructurally, they differ in in vitro dry matter digestibility and in percent composition of Si.Two millimeter leaf sections of Tifton-7 8 (Tift-7 8) and Coastal (CBG) were incubated for 72 hr in 2.5% (w/v) cellulase in 0.05 M sodium acetate buffer, pH 5.0. For controls, sections were incubated in the sodium acetate buffer or were not treated.

ACCEPTABILITY AND UTILIZATION OF GRADED LEVELS OF GMELINA ARBOREA AND CASSAVA PEELS CONCENTRATES IN WEST AFRICAN DWARF SHEEP

2015 ◽  
Vol 4 (2) ◽  
pp. 415-422
Author(s):  
Amoka Pius ◽  
Tawose O M
Keyword(s):  
Dry Matter ◽  
Nutritive Value ◽  
Control Diet ◽  
Nutrient Digestibility ◽  
Dry Matter Intake ◽  
Gmelina Arborea ◽  
Leaf Meal ◽  
Dry Matter Digestibility ◽  
Inclusion Level ◽  
Cassava Peels

The nutritive value ,voluntary dry matter intake, and the nutrient digestibility of graded levels of Gmelina arborea and cassava peels concentrates in WAD sheep was investigated. Twelve WAD sheep aged 1-2 years old and weighting 14.00± 0.45 kg were used in a complete randomized design. Diets were formulated such that cassava peels was replaced with Gmelina arborea leaf meal at 0, 33.33, 66.67, 100% levels, designated as diets A, B, C, and D respectively. Diet without Gmelina arborea leaf meal was tagged the control diet. The concentrate feed was compounded to contain 16% CP. Diets with 33.33% inclusion level of Gmelina arborea had significantly (P<0.05) higher dry matter intake (DMI) 598.80g day-1, while the lowest DMI 425.00g day-1 was obtained in animals fed 100% inclusion level of Gmelina arborea. Crude protein intake (CPI) of animals fed diets with 33.33% inclusion levels of Gmelina arborea were significantly (P<0.05) highest, followed by 66.67% inclusion level and the least was observed in 0% inclusion level of Gmelina arborea. Dry matter digestibility (DMD) was significantly (P<0.05) different across the dietary treatments, animals placed on diets with 33.33% inclusion level had the highest DMD, followed by animals on diets with 66.67, 100 and 0% inclusion levels. CP digestibility (P<0.05) increased from 33.33% to 100% inclusion levels of Gmelina arborea leaf meal, the lowest CP digestibility was observed at 0% inclusion level. CF digestibility (P<0.05) increased from 33.33% to 100% inclusion levels of Gmelina arborea leaf meal, while the lowest CF digestibility was observed at 0% inclusion level. N intake increased significantly (P<0.05) with increase in the level of Gmelina arborea inclusion from 33.33% to 100%. N retention was significantly (P<0.05) different, diets with 33.33% Gmelina arborea inclusion had the highest value (64.36g day-1) followed by 66.67%, 100% and the least (52.64g day-1) was at 0% inclusion level of Gmelina arborea.  N balance values also followed the same trend. From the results of this study, it can be concluded that the inclusion of Gmelina arborea leaf meal in WAD rams diet was well tolerated without adverse effect on acceptability, intake and nutrient digestibility, and inclusion level of 33.33% is hereby recommended in ruminants diet for optimum performance and productivity.

Divergent Selection for In Vitro Dry Matter Digestibility in Smooth Bromegrass 1

Crop Science ◽  
1986 ◽  
Vol 26 (6) ◽  
pp. 1123-1126 ◽  
Author(s):  
N. J. Ehlke ◽  
M. D. Casler ◽  
P. N. Drolsom ◽  
J. S. Shenk
Keyword(s):  
Dry Matter ◽  
Divergent Selection ◽  
Smooth Bromegrass ◽  
Dry Matter Digestibility ◽  
Selection For

scholarly journals Application of Selected Inoculant Producing Antifungal and Fibrinolytic Substances on Rye Silage with Different Wilting Time

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 879
Author(s):  
Seong-Shin Lee ◽  
Jeong-Seok Choi ◽  
Dimas Hand Vidya Paradhipta ◽  
Young-Ho Joo ◽  
Hyuk-Jun Lee ◽  
...  
Keyword(s):  
Lactobacillus Plantarum ◽  
Dry Matter ◽  
Lactobacillus Brevis ◽  
Neutral Detergent Fiber ◽  
Dry Matter Digestibility ◽  
Fiber Digestibility ◽  
Aerobic Stability ◽  
Commercial Inoculant

This research was conducted to determine the effects of selected inoculant on the silage with different wilting times. The ryes were unwilted or wilted for 12 h. Each rye forage was ensiled for 100 d in quadruplicate with commercial inoculant (Lactobacillus plantarum sp.; LPT) or selected inoculant (Lactobacillus brevis 100D8 and Leuconostoc holzapfelii 5H4 at 1:1 ratio; MIX). In vitro dry matter digestibility and in vitro neutral detergent fiber digestibility were highest in the unwilted MIX silages (p < 0.05), and the concentration of ruminal acetate was increased in MIX silages (p < 0.001; 61.4% vs. 60.3%) by the increase of neutral detergent fiber digestibility. The concentration of ruminal ammonia-N was increased in wilted silages (p < 0.001; 34.8% vs. 21.1%). The yeast count was lower in the MIX silages than in the LPT silages (p < 0.05) due to a higher concentration of acetate in MIX silages (p < 0.05). Aerobic stability was highest in the wilted MIX silages (p < 0.05). In conclusion, the MIX inoculation increased aerobic stability and improved fiber digestibility. As a result of the wilting process, ammonia-N in silage decreased but ruminal ammonia-N increased. Notably, the wilted silage with applied mixed inoculant had the highest aerobic stability.

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