scholarly journals Climate, nitrogen and grass. 4. The influence of age on chemical composition and in vitro digestibility of maize (Zea mays L.) and tall fescue (Festuca arundinacea Schreb.).

1971 ◽  
Vol 19 (4) ◽  
pp. 264-272 ◽  
Author(s):  
B. Deinum ◽  
J.G.P. Dirven
Keyword(s):  
Cell Wall ◽  
Zea Mays ◽  
Chemical Composition ◽  
Tall Fescue ◽  
Festuca Arundinacea ◽  
Zea Mays L ◽  
In Vitro Digestibility ◽  
Higher Temperature ◽  
Effect Of Age

In a field experiment with maize it was found that in vitro digestibility of leaves decreased somewhat during undisturbed growth, whereas digestibility of stems decreased appreciably. This decrease in leaf digestibility was caused by a lower digestibility of later-developed leaves and by a slight decrease in digestibility during ageing of each individual leaf. In a pot experiment with tall fescue grown at 15/10, 20/15 and 25/20 deg C, it was found that a higher temperature resulted in higher concentrations of cell-wall constituents and lower digestibility, whereas during ageing the percentage of cell-wall constituents remained constant or even decreased, digestibility decreasing slightly. Results suggested that in a constant climate the effect of age on digestibility would be small, and that the great effect of age on forage quality in spring is mainly due to rising temperature and stem formation. (Abstract retrieved from CAB Abstracts by CABI’s permission)

FORAGE PRODUCTION OF CORN AND SUNFLOWER MIXTURES

1980 ◽  
Vol 60 (4) ◽  
pp. 1377-1382 ◽  
Author(s):  
F. S. WARREN
Keyword(s):  
Zea Mays ◽  
Helianthus Annuus ◽  
Dry Matter ◽  
Zea Mays L ◽  
Matter Content ◽  
In Vitro Digestibility ◽  
Dry Matter Content ◽  
Forage Production ◽  
Plant Densities

Two corn (Zea mays L.) hybrids were grown in mixtures with three sunflower (Helianthus annuus L.) cultivars at Ottawa for forage. The species appeared compatible in mixtures but yields of forage dry matter were higher for corn alone at several plant densities than for any mixture. Dry matter content at harvest and in vitro digestibility were both lower for sunflower than for corn. Consequently, yield of digestible dry matter per hectare for the sunflower component of the forage was so low that growing mixtures of corn and sunflower could not be recommended.

scholarly journals Climate, nitrogen and grass. 6. Comparison of yield and chemical composition of some temperate and tropical grass species grown at different temperatures.

1975 ◽  
Vol 23 (1) ◽  
pp. 69-82 ◽  
Author(s):  
B. Deinum ◽  
J.G.P. Dirven
Keyword(s):  
Cell Wall ◽  
Lolium Perenne ◽  
Festuca Arundinacea ◽  
N Fertilization ◽  
Grass Species ◽  
Soluble Carbohydrates ◽  
In Vitro Digestibility ◽  
Tropical Grasses ◽  
Brachiaria Ruziziensis

For part 5 see NAR 43, 148. 6. Lolium perenne, Festuca arundinacea and 2 tropical grasses, Axonopus compressus and Brachiaria ruziziensis, were grown in pots under day/night temperatures of 19 deg /12 deg , 24 deg /18 deg , 28 deg /23 deg and 34 deg /30 deg C and regrowth was cut after 18 and 35 days. The stemmy Brachiaria was much more productive than the others which remained vegetative. The optimum production temperature was 24 deg or less for the temperate grasses but >30 deg for the others. Yield was greatest after 35 days and with high N fertilization. Lolium had the highest average content of N, soluble carbohydrates and digestibility in vitro and Brachiaria the lowest. Digestibility declined with increase in temperature and age, most for Brachiaria. These effects were caused by an increase in content of cell-wall constituents and a decrease in their digestibility. N fertilization had no effect on digestibility. Results support the hypothesis that the low digestibility of tropical grasses is mainly due to the high temperature during growth but may be improved appreciably if stem formation is suppressed. ADDITIONAL ABSTRACT: Lolium perenne, Festuca arundinacea, Axonopus compressus and Brachiaria ruziziensis were grown in pots in a glasshouse under day/night temperatures of 19/12, 24/18, 28/23 or 34/30 deg C with intermediate or high N and regrowth was harvested after 18 and 35 days. Reproductive B. ruziziensis was much more productive than the other vegetative species. Optimum day temperature for production was 24 deg or lower for temperate grasses but >30 deg for tropical species. L. perenne had the highest contents of N and soluble carbohydrates and in vitro digestibility and B. ruziziensis the lowest, differences being smallest at the low temperature. There was a consistent decline in digestibility of all species with increase in temperature and age which was correlated with an increase in cell wall constituents but was not related to amount of N applied. [For Part 5 see HbA 43, 1557] (Abstract retrieved from CAB Abstracts by CABI’s permission)

Silicon and cadmium interaction of maize (Zea mays L.) plants cultivated in vitro

Biologia ◽  
2021 ◽  
Author(s):  
Zuzana Lukacova ◽  
Denis Liska ◽  
Boris Bokor ◽  
Renata Svubova ◽  
Alexander Lux
Keyword(s):  
Zea Mays ◽  
Zea Mays L

scholarly journals Temporal Variations in Chemical Composition, In Vitro Digestibility, and Metabolizable Energy of Plant Species Browsed by Goats in Southern Mediterranean Forest Rangeland

Animals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1441
Author(s):  
Youssef Chebli ◽  
Samira El Otmani ◽  
Mouad Chentouf ◽  
Jean-Luc Hornick ◽  
Jean-François Cabaraux
Keyword(s):  
Chemical Composition ◽  
Plant Species ◽  
Nutritive Value ◽  
Condensed Tannin ◽  
Metabolizable Energy ◽  
Mediterranean Forest ◽  
In Vitro Digestibility ◽  
Large Variability ◽  
Southern Mediterranean

Forest rangelands contribute largely to goat diets in the Mediterranean area. Information about browsed plant quality is essential for adequate feeding management. The purpose of this study was to evaluate the temporal changes in chemical composition and in vitro digestibility of the main plant species selected by goats in the Southern Mediterranean forest rangeland during two consecutive years; these were very contrasted (dry and wet). The browsed species were composed of herbaceous, eleven shrubs, and four tree species. Overall, large variability in chemical composition, in vitro organic matter digestibility (IVOMD), and metabolizable energy (ME) was observed among species, grazing season (spring, summer, and autumn), and years within each species. Crude protein (CP) content varied from 60 to 240 g/kg dry matter (DM). The fiber fractions, except for Quercus suber, increased significantly by advancing maturity. Due to the water stress, the lignin level presented a higher value during the spring of the dry year. Condensed tannin (CT) content varied from 2 to 184 g/kg DM. CP, IVOMD, and ME showed a negative correlation with lignin and CT. Based on the results presented herein, it is concluded that the nutritive value of the browsed plant species was highest in the spring and lowest during the summer and autumn of both studied years. With a good grazing management strategy, the selected plant species by goats could guarantee high-quality feeding resources throughout the year.

Chemical composition, bioactive compounds, antioxidant capacity and stability of floral maize (Zea mays L.) pollen

2014 ◽  
Vol 10 ◽  
pp. 65-74 ◽  
Author(s):  
Slađana Žilić ◽  
Jelena Vančetović ◽  
Marijana Janković ◽  
Vuk Maksimović
Keyword(s):  
Zea Mays ◽  
Chemical Composition ◽  
Antioxidant Capacity ◽  
Bioactive Compounds ◽  
Zea Mays L
Sign in / Sign up

Export Citation Format

Share Document