نتایج جستجو برای: young ruminant
تعداد نتایج: 249655 فیلتر نتایج به سال:
Mannheimia haemolytica induced pneumonias are only observed in goats, sheep and cattle. The bacterium produces several virulence factors,whose principal ones are lipopolysaccharide and leukotoxin. The latter is cytotoxic only for ruminant leukocytes, a phenomenon that is correlated with its ability to bind and interact with the ruminant beta2-integrin Lymphocyte Function-associated Antigen 1. T...
background: chlamydia abortus is a zoonotic bacteriumthat commonly causes abortions in ruminants. this microorganismis one of the most important infectious agents causingabortion and major economic losses in sheep and goats worldwide.objectives: the objective of this study was investigatingthe status of c. abortus infection among small ruminantflocks of some regions in iran. methods: a total of...
Verocytotoxigenic (shigatoxigenic) and enterohaemorrhagic Escherichia coli, VTEC (STEC) and EHEC, produce a toxin active on Vero cells in vitro. VTEC and EHEC have been isolated from humans and different animal species, mainly ruminants and pigs. The verocytotoxins, also named shiga toxins (Stx), are active in vivo on the endothelial cells of the blood vessels of the gastro-intestinal mucosa, t...
This review focuses on the introduction and investigation of pangola grass as a tropical forage species especially in Thailand. Pangola grass (Digitaria eriantha Steud., synonym D. decumbens) is one of recent examples of grasses that have been successfully introduced to Southeast Asia and is often considered as one of the highest quality tropical grasses popularly grown as pasture. Pangola gras...
babesia ovis plays an important role in causing anemia and kidney dysfunction in affected animals. there are few extensive studies about hematological and biochemical findings of small ruminants' babesiosis caused by b. ovis. the aim of this study was to evaluate the effect of babesiosis on some hematological and biochemical parameters in infected small ruminants with b. ovis. a total of 280 sh...
background : small ruminants’ babesiosis caused by babesia ovis, is transmitted during blood feeding by infected ticks and is the most economically important tick-borne disease in tropical and subtropical areas. this study was carried out to to estimate the infection rate of b. ovis in sheep and goats by pcr. we have analysed risk factors that might influence infection of sheep and goats with b...
A quantitative TaqMan minor-groove binder real-time PCR assay was developed for the sensitive detection of a ruminant-specific genetic marker in fecal members of the phylum Bacteroidetes. The qualitative and quantitative detection limits determined were 6 and 20 marker copies per PCR, respectively. Tested ruminant feces contained an average of 4.1 x 10(9) marker equivalents per g, allowing the ...
Numerous quantitative PCR assays for microbial fecal source tracking (MST) have been developed and evaluated in recent years. Widespread application has been hindered by a lack of knowledge regarding the geographical stability and hence applicability of such methods beyond the regional level. This study assessed the performance of five previously reported quantitative PCR assays targeting human...
The objective was to determine the effect of forage quality on apparent total tract digestibility and ruminal fermentation in cattle versus sheep. Five yearling English crossbred (Hereford × Angus) steers (440.4 ± 35.6 kg of initial BW) and 5 yearling whiteface (Rambouillet × Columbia × Debouillet) wethers (44.4 ± 4.6 kg of initial BW), each fitted with a ruminal cannula, were randomly assigned...
1. The incorporation of labelled glucose into lipid by liver slices from sheep and cows is considerably less than that by liver slices from the rat, although oxidation to carbon dioxide occurs to a similar extent. ATP citrate lyase and NADP malate dehydrogenase are inactive in both sheep and cow liver but active in rat liver. The absence of the citrate-cleavage pathway of lipogenesis in ruminan...
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