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Gewählte Master / Diploma Thesis:

Maud Allegonda Johanna De Kinderen (2020): Genotype by Environment interactions of Chickens tested in Ethiopia Two traits analysed: BW in Ethiopia Egg Number and Egg Weight in Oromia.
Master / Diploma Thesis - Institut für Nutztierwissenschaften (NUWI), BOKU-Universität für Bodenkultur, pp 41. UB BOKU obvsg FullText

Data Source: ZID Abstracts
Abstract:
The African Chicken Genetic Gain (ACGG) project (https://africacgg.net/) aims to achieve an optimization on African smallholder poultry production by introducing commercial dual-purpose breeds into a new African environment. Different breeds may be best suited for different environments of Ethiopia, which is a country with a wide range of Agro-Ecological Zones (AEZ). This study performed genotype environment interaction (GxE) analyses for body weight (BW) of growing male and female chickens, using ACGG data. Hence, research questions of this study were to investigate: 1) If a GxE does take place for BW? 2) Which breed performs best in which environment in terms of predicted BW? Analyses was performed using predicted BW at four different ages (90, 120, 150 and 180 days) of five introduced breeds (Horro, Koekoek, Kuroiler, Sasso-Rhode Island Red (S-RIR) and Sasso) located in five Ethiopian regions (Addis Ababa, Amhara, Oromia, South Region and Tigray) being part of three AEZ (cool humid, cool sub humid and warm semi-arid). 999 females and 989 males were present. GxE was highly significant (p<0.0001) for all analysis combinations. In line with previous research, Sasso was shown to have the highest predicted BW, especially at early age, followed by Kuroiler. Due to the young breeding program of Horro, it was often observed to be the worst performing breed. Best performances were observed in Tigray, Oromia, and Amhara regions, all mainly being part of the cool sub humid AEZ having highest predicted BW. Koekoek and Kuroiler were performing well in Amhara at late age, which can potentially be explained by high precipitation.

Beurteilende(r): Sölkner Johann
1.Mitwirkender: Meszaros Gabor

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