Regina Roessler

Dr. Regina Roessler

Animal Breeding and Husbandry, University of Kassel, Kassel, Hesse, Germany
orcid
Senior scientist

Research Focus & Metrics

Academic Career Length

20Years (2007-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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24 October 2007 in Ecological Economics
Verified
Journal Article
Closed access
RRRegina Roessler
Regina Roessler
ADAdam G. Drucker
Adam G. Drucker
RSRiccardo Scarpa
Riccardo Scarpa
AMAndré Markemann
André Markemann
ULUte Lemke
Ute Lemke
AZAnne Valle Zárate
Anne Valle Zárate

19 November 2016 in Sustainability
Verified
Journal Article
Open access
PDF file
RRRegina Roessler
Regina Roessler
SMSerge Mpouam
Serge Mpouam
TMTichaona Muchemwa
Tichaona Muchemwa
Eva SchlechtEva Schlecht
Eva Schlecht
In this study, we try to capture the degree of specialization or integration, and of intensification or extensification, of (peri-) urban livestock production, along with the factors that influence such decisions and their impact on natural resource uses. A total of 181 and 187 structured questionnaires were completed in livestock-keeping households in Ouagadougou (Burkina Faso) and Tamale (Ghana). Categorical principal component and two-step cluster analysis were used to identify homogenous groups of livestock-keeping households. Cross tabulation and logistic regression analysis revealed factors that influence livestock husbandry, showing their impacts on resource use by livestock keepers in the two cities. A diversity of livestock species was kept, mostly integrated with crop farming. Yet, some households specialized in either sheep, pig or commercial milk production, and partly intensified their production. The decision to specialize and/or intensify livestock production is site-specific and influenced by the education level of the household head and security of land ownership. Higher inputs in livestock systems do not necessarily lead to higher outputs, and specialization inevitably leads to higher manure wastages. Therefore, links of livestock producers to crop farmers and markets for livestock manure must be strengthened to enable recycling of resources and limit negative externalities of specialized livestock production. Strategies need to be identified to improve livestock productivity by enhancing outputs as input use increases.

1 April 2010 in Livestock Science
Verified
Journal Article
Closed access
PHP. Herold
P. Herold
RRRegina Roessler
Regina Roessler
AWA. Willam
A. Willam
HMH. Momm
H. Momm
AZA. Valle Zárate
A. Valle Zárate

28 July 2011 in Tropical Animal Health and Production
Verified
Journal Article
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EIEvans D. Ilatsia
Evans D. Ilatsia
RRRegina Roessler
Regina Roessler
AKAlexander K. Kahi
Alexander K. Kahi
HPHans-Peter Piepho
Hans-Peter Piepho
VZValle Zárate
Valle Zárate

26 June 2017 in Asian-Australasian Journal of Animal Sciences
Verified
Journal Article
Open access
PDF file
MBMichael Mensah Brown
Michael Mensah Brown
BABenjamin Alenyorege
Benjamin Alenyorege
GTGabriel Ayum Teye
Gabriel Ayum Teye
RRRegina Roessler
Regina Roessler
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. Qualitative and morphometric traits were recorded on 788 local chickens and 394 guinea fowl in urban households in Tamale, Ghana. 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, white was preferred for plumage, whereas dark colors were preferred for beak and shanks. More than half of the chickens carried at least one major gene, but the contributions of single gene carriers were low. All calculated allele frequencies were significantly lower than their expected Mendelian allele frequencies. We observed higher mean body weight and larger linear body measures in male as compared to female chickens. In female chickens, we detected a small effect of major genes on body weight and chest circumference. In addition, we found some association between feather type and plumage color. In guinea fowl, seven distinct plumage colors were observed, of which pearl grey pied and pearl grey were the most prevalent. Male pearl grey pied guinea fowl were inferior to pearl grey and white guinea fowl in terms of body weight, body length and chest circumference; their shank length was lower than that of pearl grey fowl. Considerable variation in qualitative traits of local chickens may be indicative of genetic diversity within local chicken populations, but major genes were rare. In contrast, phenotypic and genetic diversity in local guinea fowl is limited. Broader genetic diversity studies and evaluation of trait preferences of local poultry producers are required for the design of appropriate breeding programs.

1 January 2015
Verified
Report
Closed access
IBI. Bellwood-Howard
I. Bellwood-Howard
VHV. Haring
V. Haring
HKHanna Karg
Hanna Karg
RRRegina Roessler
Regina Roessler
JSJ. Schlesinger
J. Schlesinger
MSM. Shakya
M. Shakya
The report summarizes key results from surveys carried out on urban and peri-urban agriculture (UPA) in Tamale (Ghana) and Ouagadougou (Burkina Faso) in 2013.