http://www.birds.com/blog/feather-degrading-bacteria-studied/ The definitive Birds Blog Community Wed, 28 Jul 2010 21:17:19 +0000 hourly 1 http://wordpress.org/?v=3.0 http://www.birds.com/blog/feather-degrading-bacteria-studied/comment-page-1/#comment-569 Welma Herm Mon, 01 Feb 2010 14:14:25 +0000 http://www.birds.com/?p=4925#comment-569 Hello, I was wondering what will make a bird to pick their feather's on their belly's or under their arms? Is it stress, lack of nutrition? Hello,
I was wondering what will make a bird to pick their feather’s on their belly’s or under their arms? Is it stress, lack of nutrition?

]]> http://www.birds.com/blog/feather-degrading-bacteria-studied/comment-page-1/#comment-563 Dentistry Roseville Mon, 25 Jan 2010 06:11:11 +0000 http://www.birds.com/?p=4925#comment-563 A strain of Kocuria rosea with keratinolytic activity was studied. In batch culture, the optimum temperature for feather degradation, bacterial growth and protease secretion was at 40 °C. A specific growth rate of 0.17 h−1 was attained in basal medium with feathers as fermentation substrate. Under these conditions, after 36 h of incubation, biomass and caseinolytic activity reached 3.2 g/l and 0.15 U/ml, respectively. Extracellular protease secretion was associated with the exponential growth phase. In batch fermentation, feather degradation up to 51% in 72 h was obtained with a conversion yield in biomass of 0.32 g/g. No organic acids were detected in the fermentation broth in significant amount. A strain of Kocuria rosea with keratinolytic activity was studied. In batch culture, the optimum temperature for feather degradation, bacterial growth and protease secretion was at 40 °C. A specific growth rate of 0.17 h−1 was attained in basal medium with feathers as fermentation substrate. Under these conditions, after 36 h of incubation, biomass and caseinolytic activity reached 3.2 g/l and 0.15 U/ml, respectively. Extracellular protease secretion was associated with the exponential growth phase. In batch fermentation, feather degradation up to 51% in 72 h was obtained with a conversion yield in biomass of 0.32 g/g. No organic acids were detected in the fermentation broth in significant amount.

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