نتایج جستجو برای: ruminal parameters

تعداد نتایج: 584118  

A. Vakili, M. Danesh Mesgaran, M. Mehrabadi R. Valizadeh

Two experiments (Exp.) were conducted to determine the effects of dietary addition of five herbal plants (HP) alone or as herbal plant mixture (HPM) on in vitro gas production and ruminal fermentation patterns. In Exp. 1, five varieties of HP (garlic, eucalyptus, cinnamon, thyme, and peppermint) were added to the diet at 3 different concentrations (5, 10 and 15% of concentrate dry matt...

تیموری یانسری, اسدالله, جعفرپور, سید علی, شهابی, حامد, چاشنی دل, یدالله,

To investigate the effects of oregano essential oil and canola oil on digestibility, ruminal pH and ammonia and carcass quality of fattening Dalagh lambs, an experiment was conducted with 16 lambs with an average live weight of 25±2 kg in a completely randomized design with 4 treatments (Control diet based on barley grain and corn silage without canola oil and oregano essential oil, control die...

Journal: :The Journal of veterinary medical science 2006
Nobuaki Shimada Hideo Murata Osamu Mikami Miyako Yoshioka Keerthi S Guruge Noriko Yamanaka Yasuyuki Nakajima Shigeru Miyazaki

Genetically modified corn Bt11 is insect-resistant and expresses Cry1Ab toxin, an insecticidal protein, in kernels. Although Bt11 corn is considered safe based on animal performance, there are no reports available on the clinico-biochemical effects of feeding it to cattle. In this study, we evaluated the effects of feeding Bt11 to calves, using blood and ruminal clinico-biochemical parameters. ...

Journal: :Veterinary journal 2008
Jörg M D Enemark

Sub-acute ruminal acidosis (SARA) has become an increasing problem in well-managed, high yielding dairy herds and the monitoring of groups of cows for signs of the condition is now crucial. Rumenocentesis may be ethically questionable but the technique remains the most reliable means of diagnosing SARA. Continuous measurement of ruminal pH may however be possible in the future. Parameters refle...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2014
Zhongyan Lu Friederike Stumpff Carolin Deiner Julia Rosendahl Hannah Braun Khalid Abdoun Jörg R Aschenbach Holger Martens

Ruminal fermentation products such as short-chain fatty acids (SCFA) and CO2 acutely 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). The functional short-term effects of ammonia on cytosolic pH (pHi) and...

Journal: :Applied and environmental microbiology 2007
Gérard Fonty Keith Joblin Michel Chavarot Remy Roux Graham Naylor Fabien Michallon

The aim of this work was to determine whether reductive acetogenesis can provide an alternative to methanogenesis in the rumen. Gnotobiotic lambs were inoculated with a functional rumen microbiota lacking methanogens and reared to maturity on a fibrous diet. Lambs with a methanogen-free rumen grew well, and the feed intake and ruminal volatile fatty acid concentrations for lambs lacking ruminal...

Journal: :Journal of animal science 1993
T A Stanley R C Cochran E S Vanzant D L Harmon L R Corah

Four multiparous, ruminally fistulated Angus x Hereford cows (average BW = 568 kg) were bred to the same bull and used to monitor periparturient changes in DMI, ruminal capacity, and digestion and fermentation characteristics. Cows were individually fed alfalfa hay (16.0% CP, 51.3% NDF) at 130% of the average DMI of the previous 5-d period. Ruminal capacity and DM fill were measured once every ...

Journal: :American journal of physiology. Gastrointestinal and liver physiology 2002
Frank Müller Korinna Huber Helga Pfannkuche Jörg R Aschenbach Gerhard Breves Gotthold Gäbel

Due to intensive intracellular metabolism of short-chain fatty acids, ruminal epithelial cells generate large amounts of D-beta-hydroxybutyric acid, acetoacetic acid, and lactic acid. These acids have to be extruded from the cytosol to avoid disturbances of intracellular pH (pH(i)). To evaluate acid extrusion, pH(i) was studied in cultured ruminal epithelial cells of sheep using the pH-sensitiv...

Journal: :The British journal of nutrition 2014
Longhui Jing Ruiyang Zhang Yujie Liu Weiyun Zhu Shengyong Mao

In the present study, three primiparous lactating Holstein cows (260-285 d in lactation) were used in a 3 × 3 Latin square design to assess the effects of three doses (0.0, 0.4 and 0.8 μg/kg body weight) of lipopolysaccharide (LPS, Escherichia coli 0111:B4) on changes in ruminal microbiota and ruminal fermentation. Ruminal pH was linearly decreased (P< 0.001) by LPS challenge, and the concentra...

2009
X. G. Zhao M. Wang

Effects of particle size and physical effective fibre (peNDF) of rice straw in diets on chewing activities, feed intake, flow, site and extent of digestion and rumen fermentation in goats were investigated. A 4×4 Latin square design was employed using 4 mature Liuyang black goats fitted with permanent ruminal, duodenal, and terminal ileal fistulae. During each of the 4 periods, goats were offer...

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