Results 191 to 200 of about 36,564 (225)

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
openaire   +1 more source

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
openaire   +2 more sources

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
openaire   +2 more sources

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.
openaire   +4 more sources

[Comparative measurements on ruminal pH-value in cattle].

Berliner und Munchener tierarztliche Wochenschrift, 2010
Subacute rumen acidosis (SARA) of ruminants is an important factor in terms of animal health, especially in high yielding cattle. In order to find an accurate method to determine the ruminal pH-value, three methods using eight rumen cannulated cattle were compared. An indwelling measuring unit (sensor) was used for continuous measurement of the ruminal
Katrin, Schneider, Johann, Gasteiner, Thomas, Guggenberger, Marcus, Urdl, Simone, Steiner, Anita, Neidl, Nina, Linhart, Walter, Baumgartner   +7 more
openaire   +1 more source

Impact of ruminal pH on enteric methane emissions.

Journal of animal science, 2016
The objective of this study was to determine the impact of ruminal pH on methane (CH4) emission from beef cattle. Ruminal pH and CH4 data were generated in 2 experiments using 16 beef heifers offered high-forage (55% barley silage) or high-grain (92% concentrate; DM basis) diets.
M, Hünerberg, S M, McGinn, K A, Beauchemin, T, Entz, E K, Okine, O M, Harstad, T A, McAllister   +6 more
openaire   +1 more source

Blood gas analyses, ruminal and blood pH, urine and faecal pH in dairy cows during subacute ruminal acidosis

2009
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 ...
MORGANTE, MASSIMO, GIANESELLA, MATTEO, S. CASELLA, L. RAVAROTTO, STELLETTA, CALOGERO   +4 more
openaire   +1 more source

Live yeast ruminal O2 scavenger and pH stabiliser

2005
SUPPLEMENTING ACIDOTIC DIETS WITH THE LIVE YEAST SC 47 STRENGTHENS THE RUMEN'S REDUCING POWER BY IMPROVING ITS O2 SCAVENGING ABILITY AND THUS PREVENTS SUB-ACUTE RUMINAL ACIDOSIS. THIS NEW CONCEPT PRESENTED BY JEAN-PHILIPPE MARDEN AND CORINE BAYOURTHE, APPLIES THERMODYNAMIC LAWS TO FINALLY ALLOW BETTER UNDERSTANDING LIVE YEAST'S MODE OF ACTION IN ...
Marden, Jean-Philippe, Bayourthe, Corine
openaire   +1 more source

Technical note: Evaluation of a continuous ruminal pH measurement system for use in noncannulated small ruminants.

Journal of animal science, 2009
The objective of this study was to evaluate the precision and accuracy of an indwelling ruminal pH measurement system that could be used in small ruminants (small ruminant ruminal pH measurement system; SRS) without requiring ruminal cannulation. The outer diameter, length, and weight of the SRS were 20.6 mm, 138 mm, and 245 g, respectively.
G B, Penner, J R, Aschenbach, G, Gäbel, M, Oba   +3 more
openaire   +1 more source

Gastrointestinal Tract pH and Starch in Feces of Ruminants

Journal of Animal Science, 1977
W E, Wheeler, C H, Noller
openaire   +2 more sources