Varietal differences in in vitro dry matter digestibility in Setaria, and the effects of site, age, and season

1972 ◽  
Vol 23 (6) ◽  
pp. 959 ◽  
Author(s):  
JB Hacker ◽  
DJ Minson
Keyword(s):  
Nitrogen Content ◽  
Dry Matter ◽  
Ash Content ◽  
High Potassium ◽  
Dry Matter Digestibility ◽  
Flowering Behaviour ◽  
High Concentrations ◽  
Ranking Order ◽  
Cutting Regimes

Six Setaria introductions were grown in small plots at three sites differing in soil type and location in south-eastern Queensland, and fertilizer and irrigation water were applied at similar rates. All plots of each introduction were genetically identical. Three different cutting regimes were imposed, such that at 12-week intervals during the 2 years of the experiment 4, 8, and 12-week regrowth was available for comparison of in vitro dry matter digestibility. There was an overall difference in digestibility between varieties of 6.6 percentage units, and the ranking order was usually the same for all sites, seasons, and ages of regrowth. Three of the introductions were consistently superior to cv. Nandi, the only commercial cultivar included in the present study. The two Setaria splendida introductions ranked second and sixth, although they were both higher in ash concentration than the other introductions, and this was associated with high potassium content. Differences between varieties in digestibility were not associated with flowering differences, despite large differences in flowering behaviour. The maximum mean difference between sites was 4.9 units and this was associated with differences in ash content. Difference in ash content, however, accounted for only 23% of the digestibility difference. The high ash content was associated with high concentrations of potassium. There was no association between nitrogen content and digestibility. The introduction lowest in digestibility had the highest nitrogen content. Digestibility was higher in winter than in summer at all sites, and the extent of this difference increased with age of regrowth. Higher digestibilities were obtained in younger regrowth.

scholarly journals PENAMBAHAN TEPUNG DAUN SISIK NAGA (Drymoglosum pilloselloides) TERHADAP KECERNAAN IN VITRO KONSENTRAT BERBAHAN PAKAN FERMENTASI

2015 ◽  
Vol 2 (1) ◽  
pp. 54
Author(s):  
Erwin Yulianto ◽  
Andi Murlina Tasse ◽  
Rahman Rahman
Keyword(s):  
Organic Matter ◽  
Water Content ◽  
Dry Matter ◽  
Ash Content ◽  
In Vitro Digestibility ◽  
Animal Science ◽  
Dry Matter Digestibility ◽  
Fermented Feed ◽  
Organic Matter Digestibility

This study aims to know the effect of addition of Drymoglosum pilloseloides flour on in vitro digestibility of consentrates made from fermentation feed. The treatments consist of concentrates ware added Drymoglosum pilloseloides flour 0% (R0), 0,05% (R1), 0,1% (R2), and 0,15% (R3). Experimental design was used completely randomized design (CRD) with 4 treatments and 3 replications. This study was conducted during four weeks in Animal Science Department, of Animal Science Faculty, of Haluoleo University. The average of water content of each treatment was 15,50% ± 2,56% (R0), 16,17% ± 0,32% (R1), 17,80% ± 1,57% (R2) and 16,83% ± 1,58% (R3), ash content was 25,90% ± 0,72% (R0), 21,40% ± 0,52% (R1), 20,07% ± 0,25% (R2) and 18,50% ± 0,53% (R3), dry matter digestibility was 81,33% ± 1,00% (R0), 81,73% ± 0,49% (R1), 82,27% ± 0,91% (R2) and 81,40% ± 0,10% (R3), organic matter digestibility was 81,70% ± 1,31% (R0), 83,90% ± 1,59% (R1), 83,17% ± 0,90% (R2) and 82,50% ± 0,46% (R3). The result of analysis of variance not showed that addition of Drymoglosum pilloseloides flour 0%, 0,05%, 0,10% and 0,15% significant effect (P>0,05) on water content, dry matter digestibility and organic matter digestibility. While concentrates with addition of Drymoglosum pilloseloides flour 0%, 0,05%, 0,10% and 0,15% significant effect (P<0,05) on ash content. Dry matter and organic matter digestibility were higher than normal range that usually be given to animal. Therefore concentrates with addition of Drymoglosum pilloseloides flour no decreased dry matter and dry organic digestibilities.Key Words: Drymoglosum pilloseloides, fermented feed, dry matter digestibilityThis study aims to know the effect of addition of Drymoglosum pilloseloides flour on in vitro digestibility of consentrates made from fermentation feed. The treatments consist of concentrates ware added Drymoglosum pilloseloides flour 0% (R0), 0,05% (R1), 0,1% (R2), and 0,15% (R3). Experimental design was used completely randomized design (CRD) with 4 treatments and 3 replications. This study was conducted during four weeks in Animal Science Department, of Animal Science Faculty, of Haluoleo University. The average of water content of each treatment was 15,50% ± 2,56% (R0), 16,17% ± 0,32% (R1), 17,80% ± 1,57% (R2) and 16,83% ± 1,58% (R3), ash content was 25,90% ± 0,72% (R0), 21,40% ± 0,52% (R1), 20,07% ± 0,25% (R2) and 18,50% ± 0,53% (R3), dry matter digestibility was 81,33% ± 1,00% (R0), 81,73% ± 0,49% (R1), 82,27% ± 0,91% (R2) and 81,40% ± 0,10% (R3), organic matter digestibility was 81,70% ± 1,31% (R0), 83,90% ± 1,59% (R1), 83,17% ± 0,90% (R2) and 82,50% ± 0,46% (R3). The result of analysis of variance not showed that addition of Drymoglosum pilloseloides flour 0%, 0,05%, 0,10% and 0,15% significant effect (P>0,05) on water content, dry matter digestibility and organic matter digestibility. While concentrates with addition of Drymoglosum pilloseloides flour 0%, 0,05%, 0,10% and 0,15% significant effect (P<0,05) on ash content. Dry matter and organic matter digestibility were higher than normal range that usually be given to animal. Therefore concentrates with addition of Drymoglosum pilloseloides flour no decreased dry matter and dry organic digestibilities.Key Words: Drymoglosum pilloseloides, fermented feed, dry matter digestibility

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.

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.

EFFECT OF STRUCTURAL AND CHEMICAL FACTORS OF FORAGES ON POTENTIALLY DIGESTIBLE FIBER, INTAKE, AND TRUE DIGESTIBILITY BY RUMINANTS

1988 ◽  
Vol 68 (3) ◽  
pp. 787-799 ◽  
Author(s):  
V. GIRARD ◽  
G. DUPUIS
Keyword(s):  
Cell Wall ◽  
Dry Matter ◽  
Plant Cell Wall ◽  
Neutral Detergent Fiber ◽  
Optimum Number ◽  
Apparent Digestibility ◽  
Cool Season ◽  
Dry Matter Digestibility ◽  
True Digestibility

In view of the large variation found in plant cell wall digestibilities with ruminants, an attempt was made to group 124 feeds into different lignification classes (clusters) on the basis of chemical characteristics. Each feed cluster was described using a structural coefficient [Formula: see text] that related the potentially digestible fiber (PDF, %) to the ratio between lignin and cell wall volume. The optimum number of clusters was determined iteratively by performing a regression of the apparent digestibility of dry matter at maintenance level (DDM1, %) against the PDF and cell soluble (SOL, %) contents of feeds. The [Formula: see text] coefficients varied from 0.05 (grains, N = 13) to 1.85 (corn silage, N = 3) and increased with the maturity of the grasses from 0.88 (legumes, vegetative cool season grasses, N = 26) to 1.33 (mature, cool season grasses, N = 19). Predicted PDF were closely correlated (r > 0.9, P < 0.01) to in vitro cell wall disappearances (IVCWD). Apparently digestible cell wall in four grasses and four legumes increased linearly with 96-h IVCWD and standard error (SE) was similar to the SE of predicted apparent digestible SOL from SOL concentrations. Assuming that similarity between SE could be also observed in larger samples, PDF and SOL were used in summative equations to predict apparent dry matter digestibility. DDM1 discounted for intake (DDM1 – 4, %) was regressed against SOL and PDF concentrations of 87 feeds:[Formula: see text]with ds and df, the true digestibilities of SOL and PDF. Estimates of ds and df were 0.98 and 0.95 for a zero-production (maintenance) level of intake, and 0.91 and 0.79 for an intake level four times maintenance. Since the true digestibility of the PDF component was only 4% – 13% lower than that of the cell soluble component, the concentration of PDF in cell wall was the major determinant in the variation in apparent digestibility of forages. Key words: lignin, neutral detergent fiber, true digestibility, cluster analysis, feeds

The digestibility and the nitrogen, phosphorus and ash contents of the leaves of some Australian trees and shrubs

1973 ◽  
Vol 13 (62) ◽  
pp. 245 ◽  
Author(s):  
MN McLeod
Keyword(s):  
Significant Variation ◽  
Dry Matter ◽  
Mature Trees ◽  
Lower Range ◽  
Nitrogen Levels ◽  
Dry Matter Digestibility ◽  
Individual Trees ◽  
Trees And Shrubs ◽  
Nitrogen Phosphorus

The dry matter digestibility measured in vitro and the levels of nitrogen, phosphorus and ash were determined on the leaves from mature trees of twenty-one species growing in two arboreta in southeastern Queensland and known to be grazed by animals. Most of the leaf samples had digestibilities in the lower range (68 per cent samples < 50 per cent D.M.D.) and low ash levels (65 per cent samples < 7 per cent ash). Nitrogen levels were satisfactory (86 per cent samples in range 1.5-3.0 per cent N) but the level of phosphorus tended to be low (84 per cent samples < 0.20 per cent P). Statistically significant variation between individual trees and seasons was found with some species.

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