Zobrazeno 1 - 10
of 86
pro vyhledávání: '"H.W. Symonds"'
Publikováno v:
Animal Reproduction Science. 41:245-253
Nutrition may influence reproductive processes by a number of mechanisms including a direct effect on gonadotrophin secretion. The level of energy intake during lactation in multiparous sows may therefore have important consequences for luteinising h
Publikováno v:
The British veterinary journal. 150(6)
Summary In two gilts, following closes of either 47.7 or 64.6 μmol progesterone, a secondary increase in steroid concentration in portal and mesenteric blood plasma occurred 35–40 min after dosing or 10–15 min after an intravenous (i.v.) close o
Publikováno v:
Research in veterinary science. 53(3)
The effects of interrupting the enterohepatic circulation (EHC) of bile salts for seven hours and of feeding copper and heliotrope alone and combined for 13 weeks, on bile flow and excretion of copper, zinc, iron and alpha-mannosidase were studied in
Publikováno v:
Research in Veterinary Science. 35:69-74
The rate of flow of bile and the concentrations of iron, copper, zinc and manganese in bile were measured in four bull calves, before and for at least 23 weeks after infection with 1000 metacercariae of >Fasciola hepatica. Bile flow rate began to inc
Autor:
H.W. Symonds, Youqiang Ke
Publikováno v:
Research in Veterinary Science. 46:349-353
The effect of intravenous doses of cortisol and xylazine on the quantity of copper excreted in response to 100 and 200 mg doses of tetrathiomolybdate (ttm) was studied in seven sheep. Cortisol alone produced a non-significant 1·4-fold increase and h
Publikováno v:
Research in Veterinary Science. 32:6-11
A surgical procedure is described for modifying the duodenum of cattle so that bile can be sampled and its rate of flow measured for long periods. In 12 steers, aged three months to three years and weighing between 50 and 650 kg, bile flow ranged fro
Publikováno v:
Research in Veterinary Science. 24:366-369
Additional manganese, sufficient to increase the dietary concentration to approximately 1000 mg/kg, was administered to one cow for four and another for seven days. Manganese concentrations in portal and mesenteric plasma were increased by a mean of
Autor:
H.W. Symonds, Youqiang Ke
Publikováno v:
Research in Veterinary Science. 46:344-348
To determine whether copper removed from the liver by tetrathiomolybdate (ttm) but not excreted in bile, is excreted in saliva or urine, the effect of an intravenous injection of 100 mg of ttm, as ammonium tetrathiomolybdate, on copper excretion by t
Publikováno v:
Research in Veterinary Science. 33:89-94
The rate of uptake of manganese by the liver was measured during infusions of manganese into either the visceral or the systemic circulation of four cows surgically prepared with cannulae in a mesenteric vein, the portal vein and a hepatic vein and i
Autor:
E.D. Hall, H.W. Symonds
Publikováno v:
Research in Veterinary Science. 35:5-13
The concentration of manganese in the duodenum of three steers was increased by infusing manganese chloride intraduodenally at approximately 100, 515 and 840 μmol per minute for 30 hours and the rate at which manganese was excreted in bile was measu