scholarly journals EFFECTS OF NITROGEN AND PHOSPHORUS ON THE YIELD AND CHEMICAL COMPOSITION OF MEADOW FOXTAIL

1975 ◽  
Vol 55 (4) ◽  
pp. 949-954 ◽  
Author(s):  
M. C. J. VAN ADRICHEM ◽  
J. N. TINGLE

The effects of spring-applied nitrogen (0, 56, 112 and 224 kg/ha) and phosphorus (0 and 27.4 kg/ha) on the dry matter (DM) yield and forage quality of successive harvests of meadow foxtail (Alopecurus pratensis L.) were investigated. Nitrogen increased DM yield, crude protein, Cu, K and Zn contents and decreased P, Ca, Mg and Mn contents. Application of P in combination with N increased K content in the first cut and arrested the decline of P content due to N application in all cuts. The levels of dry matter digestibility and Cu declined in successive cuts whereas Mn content increased. At low N rates, Ca and Mg contents increased as the season advanced.

2018 ◽  
Vol 53 (9) ◽  
pp. 1045-1052
Author(s):  
Mateus Merlo Coelho ◽  
Lúcio Carlos Gonçalves ◽  
José Avelino Santos Rodrigues ◽  
Kelly Moura Keller ◽  
Gustavo Vinícius de Souza dos Anjos ◽  
...  

Abstract: The objective of this work was to evaluate the effects of re-ensiling and bacterial inoculation on the quality of corn silage. The experiment was carried out in a 2x2 factorial design with or without inoculant (association of Lactobacillus plantarum and Propionibacterium acidipropionici), and with re-ensiling after 36 hours of aerobic exposure or only ensiling of the whole plant of 'BRS 1055' corn. The fermentative quality, nutritional parameters, dry matter losses, aerobic stability, and microbiological counts of silages were evaluated. Re-ensiling caused an increase of pH and in acetic acid and propionic acid concentrations, as well as in the dry matter (DM), crude protein, neutral detergent fiber, and neutral detergent fiber crude protein contents. Conversely, there was a reduction in the nonfiber carbohydrates concentration and in in vitro dry matter digestibility for the re-ensiled material. All changes were explained by the higher-effluent production and DM loss of re-ensiled material that was subjected to two compactions. Microbiology was not altered by the treatments. The use of inoculant altered ash content, but it did not influence other parameters. In contrast, re-ensiling after 36 hours of aerobic exposure caused a reduction in the nutritive value of corn silage and accentuated the DM losses.


Author(s):  
Nizamettin Turan

Research was conducted to determine the quality and chemical composition of silages obtained by mixing in different ratios of narbonne vetch (Vicia narbonensis L.) and barley (Hordeum vulgare L.) grown in rabi season of 2017-2018 in Eastern Anatolia, Turkey. In the study we studied the pure sowings of barley and narbonne vetch and their mixtures (20, 30, 40, 50, 60, 70, 80% of narbonne vetch (N) + 80, 70, 60, 50, 40, 30, 20% of barley (B). The values of ADF (acid detergent fiber), NDF (neutral detergent fiber), DDM (digestible dry matter), DMI (dry matter intake), DM (dry matter), CP (crude protein) and RFV (relative feed value) of silages of analyzed were respectively 33.38, 33.73, 62.89, 3.57, 24.69, 15.50%, 174.64. We also founded that LA (lactic acid), AA (acetic acid), BA (butyric acid), PA (propionic acid) and Ca, P, Mg, K and pH of silages investigated were respectively 1.60, 0.57, 0.42, 0.06, 1.17, 0.53, 0.25, 3.51% and 3.80. Our results shows that silages with high narbonne vetch were higher quality values for CP, ADF, NDF, DM, RFV, DDM, DMI, Ca, Mg, LA which determined chemical composition and feeding quality of silages. As a result, it is suggested that mixture silages with narbonne vetch (80%) and the barley ratio (20%) have important advantages for some properties of silages.


1982 ◽  
Vol 33 (6) ◽  
pp. 937 ◽  
Author(s):  
JR Wilson ◽  
CC Wong

The effect of illumination at 100, 60 and 40% sunlight over 4 months on herbage quality was studied in the legume, Siratro, and the grass, green panic, grown in small plots in the field in pure and 50 : 50 mixture swards, defoliated every 4 (D4) or 8 (D8) weeks. Laminae and stems of defined ages were harvested periodically from the D8 treatment, and after 8 and 16 weeks the D4 and D8 canopies were sampled in 10-cm strata for analysis of dry matter digestibility (DMD). Shading to 60 and 40% sunlight decreased the DMD of the green panic and the mixed swards by up to 10-12 percentage units in the D8 treatment. The shade effect on DMD was smaller in the D4 treatment. Shading increased leaf bulk density in the upper strata of the grass and mixed swards. The shade effect on sward DMD was due to a decrease in DMD of lamina and stem of green panic and, in the lower canopy, also to a decrease in leaf : stem ratio of the grass. The lower DMD of green panic was associated with lower total soluble carbohydrate and higher lignin in the shaded tissues. The concurrent decrease in cell wall content of green panic under shade (as a balance to higher crude protein) indicates that shade must have greatly reduced the digestibility of the cell wall material. The chemical composition and DMD of Siratro was largely unaffected by shade.


Rangifer ◽  
1986 ◽  
Vol 6 (2) ◽  
pp. 8 ◽  
Author(s):  
Torstein H. Garmo

<p>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.</p><p>Kjemisk innhald og in vitro ford&oslash;yelsesgrad av lav.</p><p>Abstract in Norwegian / Samandrag: Kjemisk innhald og in vitro ford&oslash;yelsesgrad av t&oslash;rrstoffet er bestemt i 45 pr&oslash;ver av beitelav fr&aring; to stader i S&oslash;r-Noreg. Middel innhald (g/100g t&oslash;rrstoff) av f&oslash;lgjande n&aelig;ringsstoff 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 t&oslash;rrstoff) av mikron&aelig;ringsstoffa var: kopar 2.5, molybden 0.11, sink 27.2, selen 0.12, jern 898 og mangan 154. Den midlare ford&oslash;yelsesgraden av t&oslash;rrstoffet i lav-pr&oslash;vene var 35%, men in vitro ford&oslash;yelsesanalyser undervurderer ford&oslash;yelsesgraden av lav. Det var ein stor variasjon mellom dei ulike lavartane for dei fleste n&aelig;ringsstoffa og ford&oslash;yelsesgraden. Stereocaulon spp. inneheldt meir protein, fosfor, svovel, kopar og molybden enn Cetraria spp. og Cladonia spp. Gulskinn hadde h&oslash;gare ford&oslash;yelsesgrad, og innehaldet av NFE, oske, kalsium og magnesium var h&oslash;gre enn i kvitkrull, medan trevleinnhaldet var st&oslash;rst i kvitkrull. Lav inneheldt mindre av dei fleste n&aelig;ringsstoffa samanlikna med gras, unnateke feitt, NFE, selen og jern.</p><p>J&auml;k&auml;lien kemiallinen sis&auml;lt&ouml; ja in vitro sulatuksen aste.</p><p>Abstract in Finnish / Yhteenveto: Kuiva-aineen kemiallinen sisalto ja in vitro sulatusaste on m&aring;&aring;r&aring;tty 45:ssa kokeessa t&aring;rkeist&aring; laidunj&aring;k&aring;list&aring; kahdella paikkakunnalla Etel&aring; &mdash; Norjassa. Keskim&aring;&aring;r&aring;inen 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, seleeni&aring; 0.12, rautaa 898 ja mangaania 154. Kuiva-aineiden keskim&aring;&aring;r&aring;inen sulatusaste j&aring;k&aring;l&aring;kokeissa oli 35%. Eri j&aring;k&aring;l&aring;ajien v&aring;lill&aring; oli suuri vaihtelu eisimmissa ravintoaineissa ja sulatusasteessa. Stereocaulon spp. sis&aring;lsi enemm&aring;n valkuaisainetta, fosforia, rikki&aring; kuparia ja typettomien uuteaineiden, molybdeeni&aring; kuin Cetraria spp. ja Cladonia spp. Lapalumij&aring;k&aring;l&aring;ll&aring; oli korkeampi sulatusaste, ja tuhkan, kalsiumin ja magnesiumin sis&aring;lto oli korkeampi kuin Cladonia alpestris-j&auml;k&auml;l&auml;ss&auml;, mutta kuitusis&aring;lto oli korkein Cladonia alpestris-j&auml;k&auml;l&auml;ss&auml;. J&aring;k&aring;l&aring; sis&aring;lsi v&aring;hemm&aring;n useimmista ravintoaineista ruohoon verrattuna lukuunottamatta rasvaa, typettomi&aring; uuteaineita, seleeni&aring; ja rautaa.</p>


2021 ◽  
Vol 10 (20) ◽  
pp. 13-18
Author(s):  
Yasin Akinci ◽  
Mahmut Kaplan

Objectives of the present study are to determine the variations in forage yield and quality of soybean cultivars. Experiments were conducted in randomized complete blocks design with 3 replications during the growing season of 2016. A total of 10 cultivars were used as the plant material of the experiments (Bravo, A3127, Traksoy, İlksoy, Mersoy, Nova, SA-88, Arısoy, Safir, Atakişi). Cultivars had a significant effect on yield and chemical composition. Results revealed that green herbage yields varied between 826.39 - 1199.17 kg/da, dry hay yields between 247.71 - 357.90 kg/da, crude protein yields between 16.91 - 39.86 kg/da, acid detergent fiber (ADF) ratios between 26.56 - 34.61%, neutral detergent fiber (NDF) ratios between 38.43 - 44.85%, crude ash contents between 7.20 - 11.22%, crude protein contents between 6.66 - 13.53%, dry matter digestibility (DDM) values between 61.94 - 68.21%, dry matter intake (DMI) values between 2.68 - 3.12% and relative feed values (RFV) between 2.68 - 3.12. The results of the study showed that A3127 cultivar was found to be prominent with green herbage yield (1199.17 kg/da) and dry hay yield (357.90 kg/da) and Safir cultivar was found to be prominent with crude protein yield (39.86 kg/da). It was concluded that the soybean cultivars A3127 and Safir could be recommended for hay production.


1970 ◽  
Vol 37 (1) ◽  
pp. 32-38
Author(s):  
MA Hamid ◽  
S Akhter ◽  
SME Rahman ◽  
M Khan

The study was conducted to investigate the nutritive value and microbial status of different wholesale cuts of sheep carcass. The meat sample was obtained from 3 sheep. The ages of sheep were approximately of 1, 2 and 3 years. The wholesale cuts were shoulder, rack, loin and leg of each sheep carcass. The pH, juiciness, chemical composition, total bacteria, coliform bacteria, yeast and mould were studied to assess the quality of meat. The range of pH value were 5.077 - 5.927. The value of juiciness was decreased with the age. The value of dry matter, ash, crude protein, ether extract, calcium and phosphorus content of all samples were ranged from 23.32-30.40%, 0.88-1.027%, 20.50-24.88%, 8.10-12.13%, 0.012-0.038% and 0.048-0.185% respectively. Statistical analysis indicated that the value of pH, juiciness, dry matter, crude protein, ether extract, calcium, phosphorus and yeast (log value) was highly significant (P< 0.01) due to age and cut. Chemical composition, such as dry matter, ash, ether extract and calcium of all the samples increased gradually with the age, except crude protein, which decreased gradually with the age. The phosphorus content of the sample did not differ significantly due to age and cuts. The value of ash content was less significant (P<0.05) due to different cuts but highly significant (P<0.01) due to age. The range of total bacteria and coliform bacteria was 4.210-4.787 and 2.38-3.637/g of sample respectively. The range of yeast was 1.297-2.777/g of sample. Different meat cuts and ages did not show significant difference on total bacteria and coliform bacteria but in case of yeast, the value was highly significant (P<0.01) for the ages and cuts. Nutrient content of mutton varies due to different wholesale cuts as well as age. DOI: http://dx.doi.org/10.3329/bjas.v37i1.9865 BJAS 2008; 37(1): 32-38


1970 ◽  
Vol 10 (46) ◽  
pp. 539 ◽  
Author(s):  
ES Batterham ◽  
MB Manson

The comparative value of meat meal as a protein supplement to barley, oats, sorghum, and wheat-based diets was investigated for pigs during the 18-45 kg growth phase. Diets were offered at the rate of 129 kcal digestible energy and 7 g crude protein per kg liveweight per day. Two methods of estimating digestible energy in the diets were also examined. The major differences recorded (Pt0.05) were : Growth rates-Wheat barley and sorghum, oats and barley sorghum. Feed conversion ratios-Wheat barley: oats and sorghum. Protein efficiency ratios-Wheat and oats barley sorghum. Lean in ham-Oats and barley sorghum and wheat. When the magnitude of all differences was considered the results indicated that the protein quality of the sorghum-meat meal diet was lower than that of the other three diets. The correlation between digestible energy values estimated by two methods (energy in feed X dry matter digestibility) and (energy in feed-energy in faeces/feed intake) was significant (r = 0.98)


1974 ◽  
Vol 14 (66) ◽  
pp. 33 ◽  
Author(s):  
PJ Michell

Gross energy levels and energy digestibilities were determined on 80 single species pasture samples of known dry matter digestibility. Crude protein, ash and ether extract levels were also determined. The pastures consisted of regrowths of six species, Trifolium repens (White clover cv. Grasslands Huia), Lolium perenne x multiflorum (manawa ryegrass cv. Grasslands Manawa), Lolium (multiflorum x perenne) x L. perenne (ariki ryegrass cv. Grasslands Ari ki), Lolium perenne (perennial ryegrass cv. Tasmanian No. 1), Dactylis glomerata (currie cocksfoot cv. Currie) and Dactylis glomerata (apanui cocksfoot cv. Grasslands Apanui), harvested eight times between May 1969 and August 1970. The gross energy levels in pasture dry matter and pasture digestible organic matter were highest with white clover (means 4.64 and 4.98 K cal g-1) and lowest with the ryegrasses (4.50 and 4.80 K cal g-1). They were also higher in the winter (4.60 and 4.91), autumn (4.53 and 4.90) and spring (4.56 and 4.86), and lower in the summer (4.49 and 4.77). Relations between gross energy levels and chemical composition were weak. The strongest relation was with crude protein content (r = +0.41, P < 0.01). Relations of energy digestibility and digestible energy level in pasture dry matter, with dry matter digestibility had high correlations (r = +0.97, P < 0.01, and r = +0.92, P < 0.01) and were similar to previously published relations. However, seasonal differences occurred in both relations and, at low dry matter digestibilities, winter pasture had higher energy digestibilities and higher levels of digestible energy than spring-summer pasture. Species differences occurred in the latter relation and, at high dry matter digestibilities, white clover had higher levels of digestible energy than the grasses.


2020 ◽  
Vol 42 ◽  
pp. e48304
Author(s):  
Charles Barbosa dos Santos ◽  
Katia Aparecida de Pinho Costa ◽  
Wender Ferreira de Souza ◽  
Itamar Pereira de Oliveira ◽  
Daniel Augusto Alves Teixeira ◽  
...  

The objective of this study was to evaluate dry mass production, fermentative parameters and chemical and bromatological composition of sunflower silage and Paiaguas palisadegrass silage in monocropped and intercropping in different forage systems. The experimental design consisted of randomized blocks, with four replicates. The treatments consisted of silage forage systems: sunflower monocropped; Paiaguas palisadegrass monocropped; sunflower row-intercropped with Paiaguas palisadegrass; sunflower inter-row intercropped with Paiaguas palisadegrass; and sunflower oversown and intercropped with Paiaguas palisadegrass, totalizing 20 experimental silos. Sunflower and Paiaguas palisadegrass were harvested at 110 days after planting at 20 cm from the soil for silage, using brush cutter. The silos were opened after 53 days of fermentation. The rows and inter-row intercropped systems contributed to increase the mass production of the ensiled material. The monocropped sunflower silage had higher values of pH, ethereal extract and acid detergent fiber and lower values of titratable acidity and dry matter, crude protein, neutral detergent fiber and in vitro dry matter digestibility values. The silages of the sunflower intercropped with Paiaguas palisadegrass in forage systems of crop-livestock integration presented better fermentative and bromatological characteristics, guaranteeing an adequate fermentative process and nutritional quality. In this way, the intercropping of these two forages potentiates the production of silage for feeding of ruminants during the period of forage shortage.


2007 ◽  
Vol 47 (5) ◽  
pp. 575 ◽  
Author(s):  
C. F. Machado ◽  
S. T. Morris ◽  
J. Hodgson ◽  
C. Matthew ◽  
N. Auza

To monitor seasonal changes in herbage quality, a lucerne-based pasture (Medicago sativa, Bromus willdenowii and Dactylis glomerata) was sampled in Argentina every 2 weeks for 28 months. The pasture was strip-grazed and samples were taken from the regrowth of a previously grazed strip, ready for regrazing, for which herbage mass was estimated with a calibrated rising plate meter. Each sample was sorted into dead and green components, and the latter subsequently separated into grass and lucerne, and then into lamina plus leaflet and stem plus pseudostem fractions. Similarly, at each sampling date, quantitative maturity indexes – mean stage by count and mean stage by weight – were applied to grasses and lucerne. Samples were also analysed for in vitro dry matter digestibility (DMD), crude protein (CP), fibre and non-structural carbohydrates. The dataset was divided into morphological, maturity and nutritional variables. Analyses of variance by season for both groups of variables were carried out using year as a block. Multiple regression analyses were performed for each season between maturity indices and predictors of herbage quality. DMD, and consequently metabolisable energy (ME), was significantly lower in the autumn and CP was lower in the summer compared with overall averages, which were consistently high throughout the year (overall average of 11.5 MJ ME/kg dry matter and 20.6% CP). The sward had a higher proportion of lucerne during summer and autumn, than winter and spring (averages 59.3 and 48.8%, respectively). The highest leaf : stem ratio (2.82) was during winter and the highest green content (97.5%) was during spring. Grasses had a higher mean stage by count and mean stage by weight during spring–summer, whereas lucerne had a higher mean stage by count and mean stage by weight during summer–autumn. Morphological and maturity estimates predicted satisfactorily the changes in the energy and fibre within season, but CP content was not well predicted in summer or winter. These results provide the basis for tactical grazing practices with further calibration.


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