Results 231 to 240 of about 36,664 (253)

Monitoring of ruminal pH in peripartal period in dairy cow

, 2016
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Internal Vomiting in the Ruminant: Effect of Apomorphine on Ruminal pH in Sheep

American Journal of Veterinary Research, 1981
SUMMARY Five sheep, with a rumen fistula inserted, were each injected (iv) with apomorphine (18 mg) and ruminal pH was measured every 5 minutes during a 1-hour period. During the base-line period (30 minutes) that preceded apomorphine injection, pH was constant in individual sheep and the group mean (± sd) was 7.1 ± 0.35. After apomorphine was injected,
H, Eiler, W A, Lyke, R, Johnson
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Continuous long-term monitoring of ruminal pH

Sensors and Actuators B: Chemical, 2010
Up to now continuous long-term monitoring of ruminal pH in dairy cows, which is necessary to detect and to treat subacute rumen acidosis (SARA) effectively, is not possible due to the lack of transmitters that meet all the requirements of this application.
J. Zosel, H. Kaden, G. Peters, M. Hoffmann, P. Rudisch, L. Jäkel, G. Lauckner, A. Grodrian, U. Guth   +8 more
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Blood gas analyses, ruminal and blood pH, urine and faecal pH in dairy cows during subacute ruminal acidosis

Comparative Clinical Pathology, 2008
The aim of this study was to investigate the variations of some physiological parameters in dairy cows during subacute ruminal acidosis (SARA), a common important disorder of dairy cows that occurs in early lactation. pH changes in ruminal fluid collected by rumenocentesis were measured at ten farms stationed in different zones in the north of Italy ...
MorganteM, Gianesella M., CASELLA, stefania, Ravarotto L., Stelletta C., GIUDICE, Elisabetta   +5 more
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Continuous monitoring of ruminal pH using wireless telemetry

Animal Production Science, 2009
This paper describes the performance of a prototype telemetric intraruminal bolus that measures and records pH continuously, can be delivered orally to the reticulum via bolling gun, has no external attachments and allows unrestricted activity of the animal.
Phillips, N., Mottram, T., Poppi, D., Mayer, D., McGowan, M. R.   +4 more
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Methods of Evaluating Ruminal pH in Dairy Cattle

American Association of Bovine Practitioners Conference Proceedings, 1998
Progress in understanding ruminal acidosis in dairy cattle has been limited by the methods available for determining ruminal pH. We evaluated three different methods of measuring ruminal pH in 8 ruminally-cannulated Holstein cows in early lactation as part of a 28-day nutritional study.
Oetzel, Garrett R., Nordlund, Kenneth V.
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Effects of corn stalk inclusion rate on rumination and ruminal pH in finishing beef steers

Applied Animal Science, 2020
ABSTRACT Objective The objective of this experiment was to measure feedlot performance, rumination, ruminal pH, and carcass characteristics of cattle consuming a finishing diet with increasing levels of corn stalks (CS). Materials and Methods Fifty cross-bred steers (initial BW = 302 ± 27 kg) were randomly allocated to 1 of 3 dietary treatments:
J.S. Jennings, C.L. Lockard, L.O. Tedeschi, T.E. Lawrence   +3 more
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Modulation of sheep ruminal urea transport by ammonia and pH

American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 2014
Ruminal fermentation products such as short-chain fatty acids (SCFA) and CO2acutely stimulate urea transport across the ruminal epithelium in vivo, whereas ammonia has inhibitory effects. Uptake and signaling pathways remain obscure. The ruminal expression of SLC14a1 (UT-B) was studied using polymerase chain reaction (PCR).
Zhongyan, Lu, Friederike, Stumpff, Carolin, Deiner, Julia, Rosendahl, Hannah, Braun, Khalid, Abdoun, Jörg R, Aschenbach, Holger, Martens   +7 more
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Ruminant Nutrition Symposium: Role of fermentation acid absorption in the regulation of ruminal pH.

Journal of animal science, 2011
Highly fermentable diets are rapidly converted to organic acids [i.e., short-chain fatty acids (SCFA) and lactic acid] within the rumen. The resulting release of protons can constitute a challenge to the ruminal ecosystem and animal health. Health disturbances, resulting from acidogenic diets, are classified as subacute and acute acidosis based on the ...
J R, Aschenbach, G B, Penner, F, Stumpff, G, Gäbel   +3 more
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Ruminal pH predictions for beef cattle: Comparative evaluation of current models

Journal of Animal Science, 2015
This study evaluated 8 empirical models for their ability to accurately predict mean ruminal pH in beef cattle fed a wide range of diets. Models tested that use physically effective fiber (peNDF) as a dependent variable were Pitt et al. (1996, PIT), Mertens (1997, MER), Fox et al. (2004, FOX), Zebeli et al. (2006, ZB6), and Zebeli et al.
Sarhan, Mohamed, Beauchemin, Karen A.
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