Results 281 to 290 of about 221,075 (302)
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Journal of the Science of Food and Agriculture, 1974
AbstractSoluble lipases obtained from the rumen contents of pasture‐fed cows had pH optima of 7.0 and 8.0 to 8.5, respectively, with tributyrin and triolein as substrates. At these optima the activity towards tributyrin was about 30 times greater than towards triolein.Tributyrin‐splitting bacteria were abundant in the rumen of pasture‐fed cows but none
J. C. Hawke +2 more
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AbstractSoluble lipases obtained from the rumen contents of pasture‐fed cows had pH optima of 7.0 and 8.0 to 8.5, respectively, with tributyrin and triolein as substrates. At these optima the activity towards tributyrin was about 30 times greater than towards triolein.Tributyrin‐splitting bacteria were abundant in the rumen of pasture‐fed cows but none
J. C. Hawke +2 more
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Effect of defaunating the rumen
Animal Feed Science and Technology, 1988Abstract The effects of defaunation have been extensively studied during the last 10 years. Results in the literature suggest that elimination of protozoa greatly modified the microbial environment of the rumen. In consequence, defaunation influences the intensity of fermentation and its qualitative evolution.
Jouany, J.P., Demeyer, D.I., Grain, J.
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Comparative Study of the Urease in the Rumen Wall and Rumen Content
Nature, 1966IN the course of the ruminohepatic nitrogen cycle1,2, or by supplementation in feeding3, a considerable amount of urea can enter the rumen. The ureolytic activity of the rumen content was investigated and found to be due to some species of ruminal micro-organisms.
S. Abdel Rahman, P. Decker
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2005
This chapter deals with the effects of dietary changes on the fermentation processes in the rumen and their consequences for the amount and type of nutrients delivered to the ruminant host, as well as the mathematical description of these processes. In addition to the fermentation in the lumen, the tissues in the rumen wall are also of importance for ...
Bannink, A., Tamminga, S.
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This chapter deals with the effects of dietary changes on the fermentation processes in the rumen and their consequences for the amount and type of nutrients delivered to the ruminant host, as well as the mathematical description of these processes. In addition to the fermentation in the lumen, the tissues in the rumen wall are also of importance for ...
Bannink, A., Tamminga, S.
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Control of rumen methanogenesis
Environmental Monitoring and Assessment, 1996During the last decades, considerable research on methane production in the rumen and its inhibition has been carried out. Initially, as methane production represents a significant loss of gross energy in the feed (2-15%), the ultimate goal of such intervention in rumen fermentation was an increase in feed efficiency. A second reason favouring research
Daniël Demeyer, C. J. Van Nevel
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Rumen Overload and Rumenitis in White-Tailed Deer
The Journal of Wildlife Management, 1975Rumenitis was diagnosed on the basis of histopathology in 30 of 108 white-tailed deer (Odocoileus virginianus) found dead during a severe winter in Saskatchewan. Rumenitis or rumen over- load was considered to be the cause of death of 5 of these deer, and to have contributed to the death of 4 others (8.3 percent of the deer examined).
G. Wobeser, W. Runge
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Progress in Lipid Research, 1978
Ruminants supply humans with a readily available source of fat in the form of both tissue and milk lipids. It has been known for over 50 years that the compositions of ruminant tissue and milk lipids differ markedly from those of non-ruminant herbivores (Banks and Hilditch, 1931), and much research has been done on ruminant lipids and on the microbial ...
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Ruminants supply humans with a readily available source of fat in the form of both tissue and milk lipids. It has been known for over 50 years that the compositions of ruminant tissue and milk lipids differ markedly from those of non-ruminant herbivores (Banks and Hilditch, 1931), and much research has been done on ruminant lipids and on the microbial ...
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The rumen microbiome: balancing food security and environmental impacts
Nature Reviews Microbiology, 2021I. Mizrahi, R. Wallace, Sarah Moraïs
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1997
There is little evidence of a truly random or haphazard behaviour within biological systems. The structures of these systems are usually complex and they have evolved to carry out a variety of functions that ensure the existence and propagation of any given species.
T. A. McAllister, K.-J. Cheng
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There is little evidence of a truly random or haphazard behaviour within biological systems. The structures of these systems are usually complex and they have evolved to carry out a variety of functions that ensure the existence and propagation of any given species.
T. A. McAllister, K.-J. Cheng
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Outlook on Agriculture, 1958 Research in recent years has added much to our knowledge of the processes of digestion in ruminants, and this paper shows what has been achieved, with emphasis on physical aspects of rumen function and effects on the physiological economy of the cow. Study of the subject is the best approach to such problems as improved utilization of foods or control
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