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Now showing items 101-110 of 541
Aufsatz
A pilot investigation of the relationship between climate variability and milk compounds under the bootstrap technique
(2015)
This study analyzes the linear relationship between climate variables and milk components in Iran by applying bootstrapping to include and assess the uncertainty. The climate parameters, Temperature Humidity Index (THI) and Equivalent Temperature Index (ETI) are computed from the NASA-Modern Era Retrospective-Analysis for Research and Applications (NASA-MERRA) reanalysis (2002–2010). Milk data for fat, protein (measured on fresh matter bases), and milk yield are taken from 936,227 milk records for the same period, ...
Aufsatz
Fusion of Ultrasonic and Spectral Sensor Data for Improving the Estimation of Biomass in Grasslands with Heterogeneous Sward Structure
(2017-01-21)
An accurate estimation of biomass is needed to understand the spatio-temporal changes of forage resources in pasture ecosystems and to support grazing management decisions. A timely evaluation of biomass is challenging, as it requires efficient means such as technical sensing methods to assess numerous data and create continuous maps. In order to calibrate ultrasonic and spectral sensors, a field experiment with heterogeneous pastures continuously stocked by cows at three grazing intensities was conducted. Sensor ...
Aufsatz
Competitive interaction between guava and weeds: Effect on initial growth
(2019-12-03)
Guava (Psidium guajava L.) is one of the 50 most consumed fruits in the world. However, weed competition compromises fruit production in cultivation areas. Thus, this work aimed to evaluate the competitive interaction between guava plants and common infesting species on initial growth. Guava seedlings were cultivated during 60 days with Bidens subalternans DC., Waltheria indica L. or Commelina benghalensis L. in a randomized block design with four replicates. The experiment was conducted under greenhouse condition ...
Aufsatz
Liming effects on reproductive growth and yield components of maize grown on an acid rainforest soil
(2019-12-03)
Maize was planted on limed and unlimed plots to study the effect of soil acidity on reproductive growth and yield components of the crop in Owerri southeastern Nigeria. Eight (8) maize varieties (Factor A) and two lime levels (0 and 2 t ha-1, Factor B) were arranged as a factorial experiment in a randomised complete block design with three replications. The number of days to 50 % anthesis and silking, anthesis-silking interval (ASI), physiological maturity and grain filling duration were measured to determine the ...
Aufsatz
Phenotypic diversity, major genes and production potential of local chickens and guinea fowl in Tamale, northern Ghana
(2017-06-26)
Objective:
Our study provides information on phenotypes of local chickens and guinea fowl and their body measures as well as on major genes in local chickens in northern Ghana.
Methods:
Qualitative and morphometric traits were recorded on 788 local chickens and 394 guinea fowl in urban households in Tamale, Ghana.
Results:
The results showed considerable variation of color traits and numerous major genes in local chickens, while color variations and related genotypes in guinea fowl were limited. In local chickens, ...
Aufsatz
In the search for low-cost year-round feeds: Pen-level growth performance of local and crossbred Ugandan pigs fed forage- or silage-based diets versus commercial diet
(Kassel University Press, 2018-12-04)
Smallholder pig farmers in East Africa report that lack of feed, seasonal feed shortages, quality and cost are key constraints to pig rearing. Commercially prepared pig diets are too expensive and people and pigs compete for food. Smallholder farmers typically feed nutritionally unbalanced diets, resulting in low average daily gain (ADG) and poor farmer profits. Our objective was to compare the ADG of Ugandan pigs fed forage- or silage-based or commercial diets. Ugandan weaner-grower pigs were randomly assigned to ...
Aufsatz
Lesson learnt from Smart Rice Actions in Indonesia
(Section Specialized Partnerships in Sustainable Food Systems and Food Sovereignty at the University of Kassel, Germany and Federation of German Scientists (VDW), 2018-12-26)
Smart Rice (SR) actions are innovative farming practices derived from climate smart agriculture (CSA) concepts and are directed to comply with mitigation and adaptation strategies to climate change. This study provided information about the plausible implementation of SR actions in Indonesia based on literature reviews and stakeholders’ consultation with key informants work- ing on crop management and climate information. The SR actions recommendations are a set of farming practices applied to fulfill the needs of ...
Zeitschrift
Vol. 1 No. 1 (2013): Beyond Rio+20: Green economy in agriculture and food system
(Department of Organic Food Quality & Food Culture, Faculty of Organic Agricultural Sciences, the University of Kassel and the Federation of German Scientists (VDW), 2013)
Dissertation
Use of organic wastes of Agave processing for bioenergy production
(2018)
Der organische Reststoff, welcher bei der Verarbeitung der Agave S. anfällt (Mezcal-Schlempe), ist aufgrund der hohen Anteile an organischer Substanz, anorganischen Salzen und anderer Inhaltstoffe ein umweltschädlicher Rückstand, der nicht ohne Vorbehandlung in Gewässer oder Böden gelangen darf, ggf. aber für die Bioenergieerzeugung genutzt werden könnte. Im Rahmen dieser Arbeit wurde daher unter Laborbedingungen die Eignung dafür durch drei Versuche zur anaeroben Vergärung und zwei zu mikrobiellen Brennstoffzellen ...
Aufsatz
Water Quality in Surface Water: A Preliminary Assessment of Heavy Metal Contamination of the Mashavera River, Georgia
(2018-03-23)
Water quality contamination by heavy metal pollution has severe effects on public health. In the Mashavera River Basin, an important agricultural area for the national food system in Georgia (e.g., vegetable, dairy and wine production), water contamination has multiple influences on the regional and country-wide health. With new industrial activities in the region, sediment extraction, and discharge of untreated wastewater into the river, its tributaries and irrigation canals, a comprehensive study of water quality ...