ABSTRACT
Daily oral administration of 30 mg allyl trenbolone (Regumate) for 10 to 15 days to 61 barren, maiden and lactating Thoroughbred mares which were exhibiting either deep anoestrus, shallow anoestrus, prolonged spring oestrus or lactation anoestrus, resulted in 54 mares (88 per cent) showing oestrous behaviour within 8 days, and 51 mares (84 per cent) ovulating within 18 days, after the last dose of compound. Response rate was lowest in mares in deep anoestrus. Of the 38 Regumate-treated mares which were covered during the induced oestrus, 21 (55 per cent) conceived. The practical value of this form of progesterone withdrawal therapy as a method for hastening the onset of the breeding season in Thoroughbred mares is discussed.
Subject(s)
Estrenes/pharmacology , Estrus/drug effects , Horses , Ovulation/drug effects , Trenbolone Acetate/pharmacology , Anestrus , Animals , Female , Pregnancy , Seasons , Trenbolone Acetate/analogs & derivativesABSTRACT
An outbreak of contagious equine metritis occurred in Newmarket in 1977. This survey records the effect on fertility of 20 of the stallions which were infected. Swabbing of mares since then has detected 37 carrier mares harbouring the organism, most frequently in the clitoral area. This swabbing programme reduced the incidence of new cases in 1978 to 3 mares and 1 stallion.
Subject(s)
Bacterial Infections/veterinary , Disease Outbreaks/veterinary , Horse Diseases/epidemiology , Animals , Bacterial Infections/epidemiology , Bacterial Infections/prevention & control , Disease Outbreaks/epidemiology , Disease Outbreaks/prevention & control , England , Female , Horse Diseases/prevention & control , Horses , MaleSubject(s)
Genital Diseases, Female/veterinary , Horse Diseases , Animals , Female , Horses , Infections/veterinaryABSTRACT
Diseases of the back of horse and man are not comparable owing to the great difference in anatomy and posture. Veterinary surgeons, particularly in the United Kingdom, are often requested to account for a poor performance due to suspected "back trouble" but a complete examination of the horse's back is most difficult and care must be taken first to exclude any limb or foot lesions. Diseases of the bones, nerves and muscles are briefly discussed. Diagnosis must be improved by new radiographic and biochemical tests before the significance of back lesions can be assessed or even treated.
Subject(s)
Back , Horse Diseases , Aging , Animals , Ataxia/veterinary , Cauda Equina , Fractures, Bone/veterinary , Horses , Iliac Vein , Joint Dislocations/veterinary , Muscular Atrophy/veterinary , Neuritis/veterinary , Proteinuria/veterinary , Sacrum/injuries , Spinal Cord Compression/veterinary , Spinal Diseases/veterinary , Spinal Injuries/veterinary , Spinal Neoplasms/veterinary , Syndrome/veterinary , Thoracic Vertebrae/injuries , Thrombosis/veterinaryABSTRACT
Intestinal surgery in the foal is seldom necessary but some conditions in which it is essential are well recognized. The foal is a good surgical subject but success depends mainly on operating promptly before irreversible degenerative changes take place. Exploratory laparatomy is recommended whenever mechanical obstruction is suspected. Indications fall broadly into two main categories: 1. Cases arising from congenital defects. These form a miscellaneous group and present considerable difficulties in diagnosis and effective treatment. 2. Cases related to acute onset of obstruction, mainly due to volvulus or torsion. By far the most important condition in this category is volvulus of the ileum close to the ileocaecal valve. Aetiological factors are discussed, and the value of resection of affected small intestine and creation of a new jejuno-caecal opening is indicated. It is suggested that with improvement of such techniques it will be possible to save a higher proportion of foals suffering from mechanical intestinal obstruction.
