Oxalsäure als Kohlenstoffquelle für Mikroorganismen

Ohne ZusammenfassungAuszug aus der gleichnamigen Dissertation, Göttingen, mathematisch-natur-wissenschaftliche Fakultät, 1949.     

Zur Bedeutung der Adenosintriphosphorsäure für Formkonstanz und Formänderungen von Zellen

Ohne Zusammenfassung     

Phosphorsäuresilagen als P-Quelle für Wiederkäuer

The addition of Na‐lactate (50–150 mmol/1) to media with glucose had only marginal effect on the growth of rumen lactate‐producing bacteria at pH between 6.5 and 5.8. Butyrivibrio fibrisolvens was somewhat more sensitive to external lactate than Streptococcus bovis, Lactobacillus fermentum and Selenomonas ruminantium. It can be concluded that rumen lactate producers, which proliferate at the onset of rumen lactic acidosis, are not influenced by the lactate accumulation, except some non‐specific osmotic effects.     

Richtlinien Für Bioklimatische Untersuchungen von Wintergetreiden

Ohne Zusammenfassung     

Flugunfähigmachen von Vögeln – Für und Wider

The techniques and biological functions of avian flight are briefly presented. The reasons for rendering zoo birds flightless are explained taking into account the tasks and obligations of modern zoos, and the various deflighting procedures are described. The legal situation regarding deflighting as it currently exists in Germany and other countries is clarified. It is discussed in detail under which circumstances it would be justifiable to render a bird flightless, to what extent keeping the birds in aviaries would be an alternative and whether reversible or irreversible methods should be preferred. A legal opinion has been sought which came to the conclusion that even under the restrictive Animal Welfare Law of Germany interventions to render a bird flightless were admissible if based on veterinary indication on a case-by-case basis. Such indication may be justified by the anticipation that a bird may be injured or die from an accident in future if not deflighted. Contrary to the views of some legal experts commenting on the German Animal Welfare Law the authors consider feather clipping not to be an intervention prohibited under the law. In the interest of the good functioning of european and international breeding programmes the authors suggest that the German legislation should be modified with a view of containing a general derogation for rendering flightless at least certain species of zoo birds.     

Die Chinasäure als Stoffwechselprodukt in jungen Zweigtrieben von Picea excelsa

Ohne Zusammenfassung     

Die Abhängigkeit der Erdbeererträge von Düngung und Umweltbedingungen als Grundlage für die Züchtung hochertragreicher Erdbeersorten

Ohne ZusammenfassungMit 6 Textabbildungen.Diese Arbeiten wurden mit Unterstützung der Deutschen Forschungsgemeinschaft durchgeführt.