Thesis (M.Sc. (Agricultural Economics)) -- University of Limpopo, 2015 / Food insecurity and hunger problems have received considerable attention in recent years from research experts and governments worldwide. The most important nutrients in food security are proteins, especially animal proteins. Previous studies have indicated that poultry production is the strategic source of animal protein because of its fecundity, fast growth rate and short generation interval. The poultry production sector consists of broiler and layers subsector. In South Africa, broiler production is practised by both large-scale and smallholder farmers; with the former dominating the retail and urban markets. Smallholder broiler farmers on the other hand, produce for local individuals and do not have access to high value chain markets. There are several studies on broiler value chain countrywide and on broiler resource-use efficiency in many developing countries. However, most researchers have not focused on smallholder broiler farmers despite the fact that they provide cheaper broiler meat to the majority of low income rural populations. Thus, this study analysed the broiler value chain and socio-economic factors that contribute to resource-use efficiency of smallholder broiler farmers in general in the Capricorn District of Limpopo Province. Stochastic Frontier Production Function was used to identify the socio-economic characteristics that contribute to broiler production and to determine the level of resource-use efficiency by smallholder farmers. Value chain analysis (VCA) was used to identify value chain actors and the position of smallholder broiler farmers along the value chain. Descriptive statistic results revealed that most smallholder broiler farmers are mostly female (79%) and more than 65 % are over the age of 31. The broiler input cost analysis indicated that feed cost contributed the highest expenditure (60%) in smallholder broiler production. Socio-economic factors such as educational level, experience in broiler production, access to credit, gender, access to transport, and age, were significant at different levels and therefore affect broiler production by smallholder farmers. The study also found that farmers in the study area were underutilising their resources with resource-use efficiency varying from 97% to 8%. Several constraints that v prevent smallholder broiler farmers from accessing the high value chain markets were identified. On the basis of the findings, it is recommended in this study that efforts be made to incentivise younger and energetic farmers to participate in broiler farming, government and the private sector should invest in research in order to establish alternative cheaper feeds to help reduce overall production costs, and the need for improved access to credit in order to enhance the working capital of farmers. Furthermore, the establishment of information sharing marketing cooperatives, slaughtering, processing and packaging facilities for smallholder broiler farmers in the study area will improve access to high value chain markets.

<p>How do food and agribusiness firms capture more profit in their value chain? How do innovative managers identify attractive adjacency and disintermediation opportunities? What options are available to a manager facing these questions and what economic incentives might motivate their strategic behavior? This study sought to address these timely questions, more effectively understand the strategic decisions facing food and agribusiness managers relative to value chain profit pools, and uncover some of the hidden dynamics between chain participants. Specifically, this study defines and quantifies the U.S. animal protein industry value chain across three species – hogs, cattle, and broiler chickens. The study found evidence to suggest that governance structure has strong ties to value generation and that intra-value chain dynamics impact price transmission between chain nodes. Further, this study creates a foundation for other researchers to continue examining agri-food value chain dynamics and its link to firm-level profitability, value capture, and long-term sustainability.</p>

La transition protéique correspond au processus de substitution entre protéines impliqué dans le cycle de la transition nutritionnelle, résultant de la transformation des normes et valeurs attachées aux aliments qui les fournissent. En Inde, la part relative des protéines ne s’inverse pas au profit des protéines animales dont l’augmentation se fait principalement par des aliments non carnés. Grâce à une enquête qualitative à Delhi et quantitative à Vadodara, la thèse démêle les déterminants aux décisions alimentaires concernant un portefeuille d’aliments protéiques d’origine animale, et leurs formes d’intégration dans les catégories alimentaires. Le modèle examine en effet les processus socioculturels de gestion de la mort alimentaire, régulateurs de la frontière végétarien/non-végétarien, ainsi que les frontières et contenus de ces catégories, perméables aux effets de la modernisation. Si les consommations apparaissent surdéterminées par des variables ethniques et sociales, les résultats invitent à considérer les dynamiques de différenciation sociale internes à ces groupes et opérées par ces aliments, ainsi que les contextes interactionnels agissant sur leur prévalence. A l’échelle micro-individuelle, les liens à l’alimentation et à ces aliments agencent des formes de régimes, évolutives dans un parcours alimentaire et biographique, établissant la relation entre l’individu, son alimentation, et le collectif. La thèse démontre l’autonomie culturelle vis à vis de contraintes biologiques et discute la convergence alimentaire par la place singulière des protéines animales dans les régimes alimentaires. / The protein transition corresponds to the process of substitution between proteins involved in the cycle of nutrition transition. In India the relative share of protein is not reversed in favor of animal protein whose increase is primarily through non-meat foods. Through a qualitative survey in Delhi and a quantitative one in Vadodara, the thesis unravels the determinants of food decisions regarding a portfolio of animal-based protein foods, and its forms of integration in the food categories. The model looks at the sociocultural process of the killing for food, which regulate the vegetarian/non-vegetarian boundary, as well as the boundaries and content of these categories, permeable to modernity. If the overall consumption appears overdetermined by ethnic and social variables, the results invite to consider the dynamics of social differentiation internal to these groups and produced by foods items, as well as interactional contexts acting on their prevalence. At the micro-individual level, ties to food and ties to animal foods shape forms of diets in a biographical journey, establishing the relationship between the individual, his food, and the collective. The thesis demonstrates the cultural autonomy with respect to biological constraints and discusses food convergence by the singular arrangement of animal proteins in the diets.

Résumé: Lauthentification est un concept large dans lequel il sagit de pouvoir contrôler ladéquation entre le produit et les informations indiquées sur létiquette. Les techniques utilisant la spectrométrie dans le proche infrarouge dune part, et celles basées sur la PCR dautre part, permettent daborder lauthentification des produits alimentaires sous des angles totalement différents. Loriginalité de ce travail était de les associer pour résoudre deux problèmes précis : 1. lauthentification des poulets de chair à croissance lente utilisés dans des productions de qualité différenciée soumises à des cahiers des charges contraignants ; 2. la détection des farines animales dans lalimentation pour le bétail. Nos travaux sur les poulets de chair nous ont permis de développer des modèles de discrimination reposant sur les spectres dans le proche infrarouge de la viande de poulet. Ils distinguent, pour plus de 80 % des individus, les poulets issus de souches à croissance lente de ceux issus de souches à croissance rapide. Les résultats dune expérimentation animale ont également démontré que la spectrométrie dans le proche infrarouge était capable de mettre évidence des fraudes au niveau de lalimentation des animaux. Deux marqueurs moléculaires spécifiques du type de souche de poulets ont été mis en évidence et caractérisés. Pour le marqueur moléculaire caractéristique des poulets à croissance rapide, un test rapide utilisable en routine a été développé. Dans le cas de la détection des farines animales dans lalimentation du bétail, une méthode de PCR en temps réel sensible et spécifique a été mise au point participant avec succès à des études inter-laboratoires internationales. Associée dans une stratégie originale à la MPIR (microscopie dans le proche infrarouge), elle permet la détection spécifique de particules de farines de viande et dos. Summary: Authentication is a large concept focussing on the control of the correspondance between the product and the information provided on the label. Techniques based on near infrared spectroscopy on the one hand, and those based on PCR on the other hand, allow to tackle the authentication of food and feed products by different sides. The originality of this work was to associate both techniques to solve two specific problems : 1. authentication of slow growing chickens bred in high quality productions according to restricting specifications ; 2. the detection of meat and bone meals in feedingstuffs. The work on the chicken allowed us to develop discriminant models using the near infrared spectra of chicken meat. These models discriminate the chicken from slow- vs. fast-growing chicken for more than 80 % of the animals. The results of an animal experimentation also showed that near infrared spectroscopy was able to detect feeding frauds. Two molecular markers specific of the type of chicken strains were found and characterised. For the one related to the fast-growing chicken strains, a rapid assay applicable in routine testing was conceived. In the case of the meat and bone meal detection in feedingstuffs, a specific and sensitive real time PCR method was developed. It participated succesfully to international inter-laboratory studies. Its combination with NIRM (near infrared microscopy) through an original strategy allows the specific detection of meat and bone meal particles.