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| Schader, Christian; Müller, Adrian; El-Hage Scialabba, Nadia; Hecht, Judith; Isensee, Anne; Erb, Karl-Heinz; Smith, Pete; Makkar, Harinder P.S.; Klocke, Peter; Leiber, Florian; Schwegler, Patrizia; Stolze, Matthias; Niggli, Urs. |
| Increasing efficiency in livestock production and reducing the share of animal products in human consumption are two strategies to curb the adverse environmental impacts of the livestock sector. Here,we explore the roomfor sustainable livestock production by modelling the impacts and constraints of a third strategy in which livestock feed components that compete with direct human food crop production are reduced. Thus, in the outmost scenario, animals are fed only from grassland and by-products from food production. We show that this strategy could provide sufficient food (equal amounts of human-digestible energy and a similar protein/calorie ratio as in the reference scenario for 2050) and reduce environmental impacts comparedwith the reference scenario... |
| Tipo: Journal paper |
Palavras-chave: Feeding and growth Recycling; Balancing and resource management. |
| Ano: 2015 |
URL: http://orgprints.org/29549/1/Schader-etal-2015-Food-Competing-Feedstuffs-JRS-p1-12.pdf |
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| Adler, Steffen A.; Slizyte, Rasa; Honkapää, Kaisu; Løes, Anne-Kristin. |
| Beta-keratin in poultry feathers is a structural protein that is resistant to degradation due to disulfide and hydrogen bonds. Feather meal can be a valuable feed compound if the digestibility can be increased. The objective of the present study was to analyze the effects of chemical, enzymatic, and pressure-thermic treatments for chicken feathers on solubility, in vitro protein digestibility (IVPD), and amino acid composition of solubilized and residual fractions. Two experiments were conducted. In experiment 1, models for solubility and IVPD were developed including the above factors applying a central composite face-centered design. Addition of sodium hydroxide (NaOH) and sodium sulfite (Na2SO3), and autoclaving time affected solubility and IVPD of the... |
| Tipo: Journal paper |
Palavras-chave: Feeding and growth Recycling; Balancing and resource management Processing; Packaging and transportation. |
| Ano: 2018 |
URL: http://orgprints.org/33408/1/pey175.pdf |
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