Effect of raw rice bran supplementation on rumen methanogen population density andin vitrorumen fermentation

2013 ◽  
Vol 59 (3) ◽  
pp. 129-134 ◽  
Author(s):  
Hiroki Matsui ◽  
Hiroaki Wakabayashi ◽  
Natsumi Fukushima ◽  
Kenji Ito ◽  
Ayaka Nishikawa ◽  
...  
Archaea ◽  
2010 ◽  
Vol 2010 ◽  
pp. 1-11 ◽  
Author(s):  
Sarah E. Hook ◽  
André-Denis G. Wright ◽  
Brian W. McBride

Methanogens are the only known microorganisms capable of methane production, making them of interest when investigating methane abatement strategies. A number of experiments have been conducted to study the methanogen population in the rumen of cattle and sheep, as well as the relationship that methanogens have with other microorganisms. The rumen methanogen species differ depending on diet and geographical location of the host, as does methanogenesis, which can be reduced by modifying dietary composition, or by supplementation of monensin, lipids, organic acids, or plant compounds within the diet. Other methane abatement strategies that have been investigated are defaunation and vaccines. These mitigation methods target the methanogen population of the rumen directly or indirectly, resulting in varying degrees of efficacy. This paper describes the methanogens identified in the rumens of cattle and sheep, as well as a number of methane mitigation strategies that have been effectivein vivo.


Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
C Charkhonpunya ◽  
S Sireeratawong ◽  
S Komindr ◽  
N Lerdvuthisopon

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
AM Helal ◽  
MT Khayyal ◽  
HM Abd El Aziz ◽  
RM Abdel Salam

Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
N Munkong ◽  
S Sireeratawong ◽  
A Wongnoppavich ◽  
N Lerdvuthisopon

2020 ◽  
pp. 133-158
Author(s):  
K. A. Kholodilin ◽  
Y. I. Yanzhimaeva

A relative uniformity of population distribution on the territory of the country is of importance from socio-economic and strategic perspectives. It is especially important in the case of Russia with its densely populated West and underpopulated East. This paper considers changes in population density in Russian regions, which occurred between 1897 and 2017. It explores whether there was convergence in population density and what factors influenced it. For this purpose, it uses the data both at county and regional levels, which are brought to common borders for comparability purposes. Further, the models of unconditional and conditional β-convergence are estimated, taking into account the spatial dependence. The paper concludes that the population density equalization took place in 1897-2017 at the county level and in 1926—1970 at the regional level. In addition, the population density increase is shown to be influenced not only by spatial effects, but also by political and geographical factors such as climate, number of GULAG camps, and the distance from the capital city.


2014 ◽  
Vol 35 (3se) ◽  
Author(s):  
Hoang Van Tuan ◽  
Pham Huong Son ◽  
Nguyen Thi Hien ◽  
Nguyen Thi Lai
Keyword(s):  

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