Seasonal production of Andropogon gayanus. I. Seasonal changes in yield components and chemical composition

1970 ◽  
Vol 74 (3) ◽  
pp. 487-494 ◽  
Author(s):  
R. J. Haggar
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Stem Elongation ◽  
Production Quality ◽  
Dry Season ◽  
Crude Protein Content ◽  
Wet Season ◽  
Leaf Production ◽  
Andropogon Gayanus ◽  
Calcium Phosphorus

SUMMARYChanges in yield and quality of an Andropogon gayanus sward were traced throughout the 1964 wet season and part of the following dry season.Quality, in terms of crude-protein content, was highest at the beginning of the wet season, but yield increased to a maximum at the beginning of the dry season. Once flowering was completed in October, herbage quality fell to a very low level. It was concluded that the best time to cut for hay was in early October, at which time the crude-protein content showed a small but significant increase. Regrowth measurements taken in mid-November indicated the benefit of taking an early hay cut in July as a means of producing better quality hay at the end of the rains.During the early vegetative phase of growth leaf production was greater than stem production. Quality was high because the leaves contained a higher content of crudeprotein, calcium, phosphorus and carotene than the stems. During the reproductive stage of growth, comprising stem elongation in September culminating in anthesis in early October, quality was lower due to the high fibre content of the stems. The increase in crude-protein in early October, coincided with the expansion of new leaves on the flowering stems.It was concluded that throughout most of the latter part of the growing season A. gayanus did not provide adequate supplies of crude-protein, calcium and particularly phosphorus for normal cattle growth, especially after flowering was completed in late October.

Seasonal production of Andropogon gayanus

1971 ◽  
Vol 77 (1) ◽  
pp. 47-52 ◽  
Author(s):  
R. J. Haggar ◽  
M. B. Ahmed
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Dry Matter ◽  
Crude Protein Content ◽  
Wet Season ◽  
Mature Leaves ◽  
Dry Matter Digestibility ◽  
Andropogon Gayanus ◽  
The Mean

SummaryThe crude protein content and in vitro dry-matter digestibility (I.V.D.) of leaves and stems of Andropogon gayanus, grouped into four different age categories, were measured at weekly intervals during the secondhalf of the 1968 wet season. The crude protein content of all categories of leaf and stem rose to a maximumat ear emergence; significant reductions occurred thereafter, especiallyin the younger categories of leaf and stem. At any point in time the younger leaves and stems contained significantly more crude protein than the older leaves and stems.Although the mean crude protein content of each stem category was significantly lower than the corresponding leaf category, the young, elongating stems had a significantly higher crude protein content than the older, mature leaves at the time of ear emergence.The mean I.V.D. of all leaf and stem categories was highest at the start of the recording period. At ear emergence the I.V.D. of the young elongating stems was at least as high as the mature leaves. After ear emergence the I.V.D. of the stems fell more rapidly than the leaves.The results support the principle of cutting at ear emergence to achieve maximum yields of digestible nutrients.

scholarly journals Chemical composition of some plants used as feed for rabbits in Bauchi metropolis

2021 ◽  
Vol 30 (1) ◽  
pp. 32-36
Author(s):  
B. K Musa
Keyword(s):  
Chemical Composition ◽  
Protein Content ◽  
Crude Protein ◽  
Dry Season ◽  
Nutrient Composition ◽  
Crude Protein Content ◽  
Nitrogen Free Extract

The study examined the nutrient composition of twelve plants species used as feed in Bauchi metropolis. They were collected during the month of April which is considered the peak of the dry season. The plants were divided into four groups: Trees, grasses, leguminous herbs, and non-leguminous herbs. The result showed that the crude protein content ranged from 13.61% for the leguminous herbs to 17.9% for the non-leguminous herbs. The result also showed that the plants have light nitrogen free extract and mineral requirement of rabbits with little supplementation especially during the dry season when there is acute shortage of feeds.

scholarly journals Effect of the application of different water depths and nitrogen and potassium doses on quality of Tanzania grass

2012 ◽  
Vol 32 (4) ◽  
pp. 679-688
Author(s):  
Jair da C. Oliveira Filho ◽  
Rubens A. de Oliveira ◽  
Ednaldo M. de Oliveira ◽  
Paulo R. Cecon ◽  
Carlos E. Martins
Keyword(s):  
Protein Content ◽  
Plant Height ◽  
Water Depth ◽  
Crude Protein ◽  
Dry Season ◽  
The State ◽  
Neutral Detergent Fiber ◽  
Crude Protein Content ◽  
Water Depths

The objective of this study was to evaluate the effects of the application of different water depths and nitrogen and potassium doses in the quality of Tanzania grass, in the southern of the state of Tocantins. The experiment was conducted on strips of traditional sprinklers, and used, as treatments, a mixture of fertilizer combinations of N and K2O always in the ratio of 1 N:0.8 K2O. This study determined throughout the experiment: plant height (PH), the crude protein (CP) and neutral detergent fiber (NDF). The highest plant height obtained was 132.4 cm, with a fertilizer dose of 691.71 kg ha-1 in the proportion of N:0.8 K2O, in other words, 384.28 kg ha-1 of N and 307.43 kg ha-1 of K2O, and water depth of 80% of the ETc. The highest crude protein content was 12.2%, with the fertilizer dose application of 700 kg ha-1 yr-1 in the proportion of 1 N to 0.8 of K2O, in other words, 388.89 kg ha-1 of N and 311.11 kg ha-1 of K2O and absence of irrigation. The lowest level of neutral detergent fiber was 60.7% with the application of the smallest dose of fertilizer and highest water depth. It was concluded in this study that there was an increase in plant height by increasing the fertilizer dose and water depth. The crude protein content increased 5.4% in the dry season, by increasing the fertilizer dose and water depth. In the dry season, there was an increase of NDF content by 4.5% by increasing the application of fertilizer and water depth.

scholarly journals Fractionation of nitrogen compounds and carbohydrates in forages of different ages

2018 ◽  
Vol 39 (2) ◽  
pp. 819
Author(s):  
Alexandre Paula Braga ◽  
Liz Carolina da Silva Lagos Cortes Assis ◽  
Jesane Alves Lucena ◽  
Jailma Suerda Silva de Lima ◽  
Tatiana Fernanda Barbosa Barreto ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Protein Content ◽  
Crude Protein ◽  
Fiber Content ◽  
Wall Material ◽  
Mineral Matter ◽  
Nitrogen Compounds ◽  
Crude Protein Content ◽  
Federal Institute ◽  
Andropogon Gayanus

The objective of this study was to evaluate the chemical composition and protein and carbohydrate fractions in three forage species (Andropogon gayanus Kunth, Cenchrus ciliares L. and Panicum maximun x Panicum infestum) at four cutting ages: 21, 35, 49 and 63 days. Experiments were carried out at the Federal Institute of Education Science and Technology of Rio Grande do Norte - IFRN, located in the municipality of Apodi- RN, Potiguar West Meso-region. Materials collected in the field were analyzed in the Laboratory of Animal Nutrition (LANA), Federal Rural Semiarid University (UFERSA), Campus Mossoró, RN. Samples were processed, phenated, and analyzed. The analysis conducted included fractionation of nitrogen compounds and carbohydrates and chemical composition (dry matter, mineral matter, crude protein, lipids and fibers) was determined. The forages evaluated showed decreasing crude protein content with increasing cutting age, ranging between 14.9 and 6.2%. Andropogon grass showed the highest crude protein content. The fiber content increased with age. Fiber consisted of 62.4%–70.0% NDF and 30.07%–33.03% ADF. Highest fiber content was recorded for Massai grass, in which case, these two component species showed the highest fractions of intermediate degradation protein (B2), while Andropogon and Buffel Capins showed higher fractions of non-fibrous carbohydrates (A and B1). An increase in the concentration of cell-wall material in the detriment of the cellular content with increasing plant age was observed in the fodder studied. We also observed an increase in the indigestible fraction (C) of proteins and carbohydrates in the species studied.

scholarly journals Structure and nutritional value of BRS Zuri grass under shading

2021 ◽  
Vol 22 ◽  
Author(s):  
Estella Rosseto JANUSCKIEWICZ ◽  
Luísa Melville PAIVA ◽  
Henrique Jorge FERNANDES ◽  
Alex Coene FLEITAS ◽  
Camila Fernandes Domingues DUARTE ◽  
...  
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Dry Season ◽  
Panicum Maximum ◽  
Crude Protein Content ◽  
Experimental Conditions ◽  
Foliar Fertilization ◽  
Dry Matter Digestibility ◽  
Dead Material

ABSTRACT The objective was to determine the structural and nutritive parameters for Panicum maximum cv. BRS Zuri under a Eucalyptus shading system, in rainy and dry seasons. At the beginning of each season, the treatments (foliar fertilization levels of 0, 3, 6 and 9 L ha-1) were applied and evaluated at 28, 56, and 84 growing days. The treatments did not affect significantly (p ≥ 0.05) the evaluated parameters. The systems (shading and full sun) and seasons did not change (p ≥ 0.05) forage and root masses. The leaf crude protein content was higher (p ≤ 0.05) in the dry season. Height, leaf mass, stem and dead material, neutral and acid detergent fiber contents, and in vitro dry matter digestibility were affected (p ≤ 0.05) by the system x season. The growing days did not affect (p ≥ 0.05) forage mass. The mass of dead material decreased (p ≤ 0.05) over the evaluated intervals. The other parameters were affected (p ≤ 0.05) by system × growing days. Based on the results, the forage and root masses show that the cv. BRS Zuri is adapted to the shading in the proposed experimental conditions. These masses added to the crude protein content indicate adaptation to low rainfall, inherent to the dry season, while foliar fertilization applied at the beginning of seasons did not affect the structural and nutritive parameters of BRS Zuri grass.

scholarly journals Penggunaan Fermentasi Pakan Komplet Berbasis Hijauan Pakan dan Jerami Untuk Pakan Ruminansia

2016 ◽  
Vol 1 (2) ◽  
pp. 255-263 ◽  
Author(s):  
Bambang Suwignyo ◽  
Ali Agus ◽  
Ristianto Utomo ◽  
Nafiatul Umami ◽  
Bambang Suhartanto ◽  
...  
Keyword(s):  
Protein Content ◽  
Rice Straw ◽  
Crude Protein ◽  
Nutritional Value ◽  
Emergency Situation ◽  
Disaster Risk ◽  
Dry Season ◽  
Crude Protein Content ◽  
Merapi Volcano

Fermented complete feed (CF) based forage-fodder and agricultural by product as feed for ruminants can be implemented in the household and industrial purpose. Complete feed technology is one of alternative to solve the problems of stock and quality of feed. The nutritional value can be set by determine the number and type of mixture, livestock will not has an opportunity to choose so that it can minimize residual feed, practical, and can be stored for long periods. Fermented complete feed very much match to be implemented in the dry season or in the emergency situation. During Merapi Volcano eruption in 2010 was one of moment which is need CF technology. Rice straw can used for CF that can be socked during dry season, also the quality might improve (from 3—4% of crude protein content became 7—8%) with addition of rice brand or other ingredients. Fermented complete feed based on rice straw, forage-fodder or agricultural by product has a multifungtion in the emergency situation, reduce disaster risk, and feed security conservation.

Early productivity and crude protein content of establishing forage swards composed of combinations of native grass and legume species in mixed-grassland ecoregions

2013 ◽  
Vol 93 (3) ◽  
pp. 445-454 ◽  
Author(s):  
Jenalee M. Mischkolz ◽  
Michael P. Schellenberg ◽  
Eric G. Lamb
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Plant Density ◽  
Warm Season ◽  
Forage Yield ◽  
Schizachyrium Scoparium ◽  
Legume Species ◽  
Crude Protein Content ◽  
Native Grass ◽  
Western Wheatgrass

Mischkolz, J. M., Schellenberg, M. P. and Lamb, E. G. 2013. Early productivity and crude protein content of establishing forage swards composed of combinations of native grass and legume species in mixed-grassland ecoregions. Can. J. Plant Sci. 93: 445–454. We evaluated the early establishment productivity of forage swards of native, perennial, cool and warm season grasses, and legumes as they have the potential to provide non-invasive, productive, and drought resistant rangelands. Seven species with agronomic potential and a broad native geographic distribution were selected for testing including: nodding brome [Bromus anomalus (Coult.)], blue bunch wheatgrass [Pseudoregneria spicata (Pursh)], western wheatgrass [Pascopyrum smithii (Rydb.)], side oats grama [Bouteloua curtipendula (Michx.)], little blue stem [Schizachyrium scoparium (Michx.)], purple prairie clover [Dalea purpurea (Vent.)], and white prairie clover [Dalea candida (Willd.)]. Forage swards, including all seven monocultures, 21 two-species mixtures and a mixture with all species, were planted in two sites, Saskatoon and Swift Current, Saskatchewan. Western wheatgrass (WWG) had the highest overall plant density and the strongest effect on the forage yield of the forage swards; however, productivity and crude protein content were not reduced when other species were also included in the forage sward. Dalea spp. did not establish as well as the other species, but had the highest crude protein concentrations. This work provides insight into forage sward development at the establishment stage; additional work is required to determine long-term species impacts for well established forage swards.

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