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The influence of increased feeding on the susceptibility of sheep to infection with Haemonchus contortus
(1999-10)
Previous research has shown that supplementing the diet of growing lambs with urea enhances their ability to withstand gastrointestinal infection with the nematode Haemonchus contortus. This study compared lambs given two ...
The relationship between the number and size of nematodes in the abomasum and the concentration of pepsinogen in ovine plasma
(1999-08)
Six-month-old lambs that had been naturally infected with predominantlyTeladorsagia (Ostertagia) circumcinctawere tested for plasma pepsinogen concentrations because pepsinogen concentrations may reflect the extent of ...
Pharmacokinetics of enrofloxacin and danofloxacin in plasma, inflammatory exudate, and bronchial secretions of calves following subcutaneous administration
(1999-08)
Enrofloxacin (2.5 mg/kg of body weight) and danofloxacin (1.25 mg/kg) were administered subcutaneously to ruminating calves (n = 8) fitted with subcutaneous tissue cages. Concentrations of enrofloxacin, its metabolite ...
The distribution of pepsinogen within the abomasa of cattle and sheep infected with Ostertagia spp. and sheep infected with Haemonchus contortus
(1999-03-31)
The effect of nematode infections on the production of pepsinogen by ruminants was investigated immunohistochemically and biochemically. Abomasal tissues were collected from parasite-naive cattle and sheep, from sheep ...
Antibiotics and resistance in farm animals
(1999)
Antibiotics are used in animals to cure disease and prevent suffering. Bacterial populations in animals which are exposed to these antibiotics may be selected for resistance. There is a concern that spread of these bacteria ...
Antimicrobial resistance: a veterinary perspective
(1998-09-05)
Bacterial disease is a major constraint on the efficient production of animal derived food and causes ill health and suffering in both food producing and companion animals. In some production systems the spread of bacterial ...
The processes influencing the distribution of parasitic nematodes among naturally infected lambs
(1998-08)
The impact of mixed, nematode infection upon a group of animals will depend upon the number of nematodes present, how they are distributed among hosts and whether individuals that are heavily parasitized with one species ...
Measurement of cyclooxygenase inhibition in vivo : a study of two non-steroidal anti-inflammatory drugs in sheep
(1998-08)
The anti-inflammatory effects of the non-steroidal anti-inflammatory drugs phenylbutazone (PBZ) and flunixin meglumine (FM) and the relationship between the effects and drug concentration in vivo were studied using a ...
Pharmacokinetic studies of flunixin meglumine and phenylbutazone in plasma, exudate and transudate in sheep
(1998-08)
Flunixin meglumine (FM, 1.1 mg/kg) and phenylbutazone (PBZ, 4.4 mg/kg) were administered intravenously (i.v.) as a single dose to eight sheep prepared with subcutaneous (s.c.) tissue-cages in which an acute inflammatory ...
Changes in the zymogenic cell populations of the abomasa of sheep infected with Haemonchus contortus
(1998-06)
The effects of dietary urea supplementation and of a 10-week trickle infection regime, simulating chronic exposure to Haemonchus contortus, on the zymogenic population of the abomasa of Hampshire Down lambs was examined, ...