DURÉE D’INTERFÉRENCE DU CHIENDENT, Agropyron repens (L.) Beauv. DANS LA LUZERNE, Medicago sativa L.

1987 ◽  
Vol 67 (2) ◽  
pp. 451-456
Author(s):  
D. PAGEAU ◽  
G. D. LEROUX
Keyword(s):  
Cell Wall ◽  
Medicago Sativa ◽  
Protein Content ◽  
Forage Quality ◽  
Medicago Sativa L ◽  
Agropyron Repens

A study was conducted at St-Augustin, Quebec, in 1984 and repeated in 1985 to determine the tolerable period of interference between alfalfa (Medicago sativa L.) and quackgrass (Agropyron repens (L.) Beauv.) during the year of establishment. Glyphosate was used prior to seeding of alfalfa to control quackgrass. Haloxyfop-methyl, a selective grass herbicide, was sprayed at different periods after crop emergence to control quackgrass. This herbicide was applied at 3, 6 and 9 wk after alfalfa emergence. A 3-wk period of interference provided equivalent proportion of alfalfa in forage and the same level of forage quality as the quackgrass-free control. Delaying haloxyfop-methyl treatments to more than 3 wk resulted in an increased proportion of quackgrass in forage which caused a reduction of the protein content and an increase of the cell wall contents (NDF and ADF). Alfalfa density did not differ between 0 and 3 wk of interference of quackgrass, but tended to be reduced with a longer period of interference.Key words: Quackgrass, alfalfa, duration of interference, haloxyfop-methyl, glyphosate, forage quality

GENETIC VARIATION FOR FORAGE QUALITY OF ALFALFA STEMS

1987 ◽  
Vol 67 (4) ◽  
pp. 1057-1067 ◽  
Author(s):  
D. R. BUXTON ◽  
G. C. MARTEN ◽  
J. S. HORNSTEIN
Keyword(s):  
Cell Wall ◽  
Genetic Variation ◽  
Medicago Sativa ◽  
Crude Protein ◽  
Nutritive Value ◽  
Growth Traits ◽  
Forage Quality ◽  
In Vitro Digestibility ◽  
Medicago Sativa L

When normally harvested for hay, the basal portion of alfalfa (Medicago sativa L.) stems is low in forage quality. This study was conducted to determine whether genetic variation for in vitro digestible dry matter (IVDDM) and crude protein (CP) concentration of stems of perennial Medicago spp. could be identified and whether morphological and chemical traits were associated with variation in these characteristics of stems. The lower six nodes and internodes of stems and total herbage from 64 Plant Introduction (PI) accessions and five cultivars of field-grown plants were harvested twice when most plants were at the early seed-pod stage of maturity. Several morphological and growth traits were measured, and both stems and total herbage were evaluated for IVDDM and CP concentration. Covariant analysis was used to adjust in IVDDM and CP concentration of stems for differences in plant maturity. Significant variation for IVDDM and CP concentration in stems existed among the cultivars and among the accessions. Some accessions had significantly higher stem IVDDM or CP concentration than control cultivars. The M. sativa accession, PI 440496, had the fourth highest stem IVDDM and third highest stem CP, with concentrations of 374 and 79 g kg−1, respectively. The number of ridges on stems (stem shape) was significantly correlated with stem IVDDM and CP concentration with average correlation coefficients of 0.30 and 0.35, respectively. Cell-wall concentration and lignin concentration per unit cell wall of stems were both negatively correlated with stem IVDDM and CP concentration. Selection for improved nutritive value of stems may have potential for improving the nutritive value of alfalfa herbage.Key words: Alfalfa, forage quality, crude protein, in vitro digestibility, Medicago sativa L.

Shearing force of alfalfa stems: Effects of genotype and year interactions

1998 ◽  
Vol 78 (4) ◽  
pp. 719-722
Author(s):  
A. D. Iwaasa ◽  
K. A. Beauchemin ◽  
S. N. Acharya ◽  
J. G. Buchanan-Smith
Keyword(s):  
Cell Wall ◽  
Medicago Sativa ◽  
Key Words ◽  
Chemical Constituents ◽  
Stem Segment ◽  
Shearing Force ◽  
Medicago Sativa L ◽  
Genotype Clustering ◽  
Force Characteristics

Shearing force of alfalfa (Medicago sativa L.) stems was measured to evaluate genotype-by-year interactions. Based on mean shearing force for each stem segment and genotype clustering criteria, several genotypes had similarly shearing forces among years. Therefore, selecting genotypes with desirable shearing force characteristics to improve digestibility or intake potential of forages may be possible. Key words: Genotype, environment, shearing force, cell wall chemical constituents

scholarly journals The nutritional quality of feedstuffs used in dairy goat nutrition in Vojvodina

2019 ◽  
Vol 35 (2) ◽  
pp. 163-178
Author(s):  
Snezana Paskas ◽  
Jelena Miocinovic ◽  
Branislav Vejnovic ◽  
Zsolt Becskei
Keyword(s):  
Chemical Composition ◽  
Medicago Sativa ◽  
Protein Content ◽  
Nutritional Quality ◽  
Lignin Content ◽  
Dairy Goat ◽  
Crude Fibre ◽  
Significant Difference ◽  
Medicago Sativa L

The study was to conduct to evaluate the chemical composition and nutritive values of feedstuffs (forages and concentrate mixtures) used for dairy goats nutrition in Vojvodina. Samples were collected from six farms, including one organic farm. The results showed that the relative feed values of analyzed forages were in the range of good, medium to lower quality. Average protein content from lowest to highest for investigated forages was: corn silage (Zea Mays) (65.37-82.57g kg??DM), alfalfa haylage (Medicago sativa L.) (159.99-184.17g kg??DM), pasture (185.30g kg?? DM), and alfalfa hay (Medicago sativa L.) (167.48-203.60g kg??DM). The non-fibre carbohydrates and protein content most varied in organic hay samples (cv: 29.25% and 19.09%, respectively). Generally, feedstuffs used in organic nutrition, including organic concentrate, were of lower nutritional quality and moreover contained higher amounts of crude fibre and lignin. Especially, a high source of variation was observed in investigated concentrate mixtures for the crude protein content (p<0.0001), ranged from 135.32 to 209.87g kg??DM. Corn silages also varied substantially in their chemical composition and significant difference (p<0.05) was observed in regard to acid detergent fibre (ADF) and lignin content (ranged: ADF: 242.20-319.24g kg??DM; ADL: 27.98-52.54g kg??DM, respectively). Furthermore, pasture contained the most soluble materials during May and June and their content was related inversely to crude fibre amount. This survey highlights that investigated farms still pay insufficient attention to the quality of the feedstuff. For the development of intensive goat farming, greater emphasis should be placed on using higher quality feedstuffs, as well, standards for feed quality must be considered and established.

Forage Quality Components in Grazing-Type Lucerne (Medicago sativa L. complex)

2001 ◽  
Vol 187 (3) ◽  
pp. 145-152 ◽  
Author(s):  
L. Pecetti ◽  
N. Berardo ◽  
M. Odoardi ◽  
E. Piano
Keyword(s):  
Medicago Sativa ◽  
Forage Quality ◽  
Medicago Sativa L

Water Requirement and Its Association With Growth Components and Protein Content of Alfalfa ( Medicago sativa L.) 1

Crop Science ◽  
1970 ◽  
Vol 10 (3) ◽  
pp. 237-240 ◽  
Author(s):  
D. F. Cole ◽  
A. K. Dobrenz ◽  
M. A. Massengale ◽  
L. Neal Wright
Keyword(s):  
Medicago Sativa ◽  
Protein Content ◽  
Water Requirement ◽  
Medicago Sativa L

Bloat in cattle fed alfalfa selected for a low initial rate of digestion

1994 ◽  
Vol 74 (3) ◽  
pp. 451-456 ◽  
Author(s):  
J. W. Hall ◽  
W. Majak ◽  
D. G. Stout ◽  
K.-J. Cheng ◽  
B. P. Goplen ◽  
...  
Keyword(s):  
Medicago Sativa ◽  
Protein Content ◽  
Key Words ◽  
Dry Matter ◽  
Initial Rate ◽  
Legume Species ◽  
The Third ◽  
Fourth Cycle ◽  
Medicago Sativa L

Investigations of legume species which do and do not cause bloat suggested that a bloat-safe alfalfa (Medicago sativa L.) might be produced by reducing its initial rate of digestion. This study compared a third cycle alfalfa synthetic selected for a low initial rate of digestion (LIRD) with a control cultivar (Beaver). The occurrence of bloat was not significantly lower when cattle were fed cycle 3 LIRD than when fed Beaver in three grazing trials or in two of three feedlot trials. The deviation of the results in the third trial could not be explained by differences in dry matter or protein content. When grown under irrigation, the 4 h dry matter disappearance (DMD) of cycle 3 LIRD was 89% to 96% of that for Beaver. This reduction was much less than has been hypothesized to prevent bloat. Without irrigation the 4 h DMD of both cultivars were reduced by 1–3% while cycle 3 LIRD continued to have a lower DMD than Beaver. LIRD may provide some protection against bloat on dry rangelands though the response may be variable in years when moisture is well supplied. Studies with a fourth cycle LIRD selection will investigate this further. Key words: Legumes, Medicago sativa L., nylon bag, digestion

scholarly journals Analysis of Cell Wall-Related Genes in Organs of Medicago sativa L. under Different Abiotic Stresses

2015 ◽  
Vol 16 (7) ◽  
pp. 16104-16124 ◽  
Author(s):  
Marc Behr ◽  
Sylvain Legay ◽  
Jean-Francois Hausman ◽  
Gea Guerriero
Keyword(s):  
Cell Wall ◽  
Medicago Sativa ◽  
Abiotic Stresses ◽  
Medicago Sativa L

Genetic variation for disease and nematode resistances and forage quality in perennial diploid and tetraploid lucerne populations (Medicago sativa L.)

Euphytica ◽  
1996 ◽  
Vol 91 (2) ◽  
pp. 241-250
Author(s):  
B. Julier ◽  
P. Guy ◽  
C. Castillo-Acuna ◽  
G. Caubel ◽  
C. Ecalle ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Medicago Sativa ◽  
Forage Quality ◽  
Medicago Sativa L

VARIATION OF FRACTION 1 PROTEIN CONTENT IN ALFALFA

1970 ◽  
Vol 50 (5) ◽  
pp. 537-539 ◽  
Author(s):  
D. H. HEINRICHS ◽  
J. E. MILTIMORE
Keyword(s):  
Medicago Sativa ◽  
Protein Content ◽  
Chemical Constituents ◽  
Fraction 1 Protein ◽  
Medicago Sativa L

An alfalfa population consisting of plants of Medicago sativa L., M. media Pers., and M. falcata L. varied significantly for Fraction 1 (18S) protein content. M. falcata plants, as a group, contained about half as much Fraction 1 protein as M. sativa plants while M. media plants tended to fall between these two in Fraction 1 protein content. It is suggested that M. falcata may be a source of low Fraction 1 protein content. There was no appreciable association between Fraction 1 protein content and other chemical constituents.

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