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Infertility and abortion caused by Campylobacter fetus is described in a series of 12 herds in South West Scotland during the period May 1974 to December 1976. Herd studies show that 44 bulls were involved and that there were 34 bull and 18 cow movements for breeding purposes. The need to include C fetus infection in the differential diagnosis of herd infertility is emphasised.
Vet Rec 1977 Dec 03
PMID:Campylobacter fetus (Vibrio fetus) infection in dairy herds in South-West Scotland. 59 1

A summer infertility problem was investigated on a large intensive piggery in a warm temperate climatic zone in Eastern Australia. The period of infertility correlates with the period of summer heat stress. The infertility problem was manifest as a delayed return of sows to oestrus after mating and an increase in the number of sows found non-pregnant when due to farrow. Litter size was apparently not adversely affected. Gilts and first parity sows were most frequently involved. The subsequent breeding performance of sows affected by this infertility problem was quite normal. There was no apparent effect of heat stress on the boars. It is proposed that the infertility is caused by heat stress imposed more than seven days after mating causing whole litter loss and the return of the sow to oestrus.
Vet Rec 1978 Nov 11
PMID:Definition of a seasonal infertility problem in pigs. 74 12

Fluprostenol (ICI 81,008) is a 16-aryloxyprostaglandin, structurally related to PGF2alpha. It is a highly potent luteolytic agent, being effective in thoroughbred mares at a single intramuscular dose of 250 mug and having a wide margin of safety in this species. A total of 941 mares have been treated with fluprostenol in an international trial, for various forms of infertility associated with abnormal persistence of luteal function. These mares were selected for treatment on the basis of clinical examination and 760 (approximately 80 per cent) responded fluprostenol by showing oestrus within seven days of the injection. The fertility of the oestrus following prostaglandin-induced luteal regression has been consistently shown to be normal. A number of causes have been identified for the lack of response in the remaining 20 per cent of animals.
Vet Rec 1976 Jun 26
PMID:Fluprostenol in mares: clinical trials for the treatment of infertility. 94 81

A postal survey was carried out by the Pig Veterinary Society to establish the opinions of its members on priorities for pig research: 153 members, 64 per cent of the total--returned analysable questionnaires. The survey shows that problems of highest priority for members are atrophic rhinitis, non-infectious infertility, neonatal enteritis, economics of disease, preventive medicine programmes and swine dysentery. The membership was classified by the nature of their work into five groups and the six subjects listed above cover the top three priorities of all groups. A classification of the papers listed in the Index of Current Research on Pigs XXII 1976 suggests that some of the six subjects are under researched.
Vet Rec 1976 Dec 04
PMID:Priorities for pig research. 99 96

Three cases of dairy herds affected by production disease (infertility, calf scours and low milk yield) were carried out. The value of blood analysis in establishing a diagnosis and a dietary supplement of molasses in correcting the production problems is illustrated.
Vet Rec 1975 May 24
PMID:Production disease control: three dairy herd case studies in NE Scotland. 113 11

The clinical syndrome of a new disease of pigs in four herds in the Humberside area is described. The first signs of the disease were anorexia, lethargy and pyrexia with up to 60 per cent of the dry sows affected. These signs were followed by an increased incidence of abortions which occurred in up to 3.3 per cent of sows, premature farrowings in up to 20.6 per cent of sows and stillbirths and late mummification which affected up to 26.0 and 18.8 per cent of fetuses, respectively. Mortality in neonatal and pre-weaning pigs reached up to 88 per cent and respiratory disease of high morbidity and low mortality occurred in fattening pigs. There were infertility problems in sows, with an increase in returns to service and a failure to show oestrus after weaning or aborting. The signs of the disease in boars were anorexia and malaise. Cyanosis of the extremities affected up to 2 per cent of the animals. The outbreak lasted 11 weeks in all the herds.
Vet Rec 1992 Aug 15
PMID:An outbreak of blue-eared pig disease (porcine reproductive and respiratory syndrome) in four pig herds in Great Britain. 141 21

The literature on the bacterial flora in the vagina of the bitch is reviewed. The bacterial flora in the vagina of healthy bitches is compared with the flora of infertile bitches and bitches with vaginitis, and the role of Brucella canis as a cause of infertility is evaluated. Several investigators have recommended that bitches with reproductive disorders be treated with antibacterial drugs, but there is very little knowledge of the effect of this therapy on the bacterial flora in the vagina.
Vet Rec 1992 Oct 17
PMID:Significance of the vaginal bacterial flora in the bitch: a review. 144 Nov 53

Actinobacillus seminis was isolated from the semen of five rams on four farms. Four of the rams had abnormal semen and three were also infertile. The isolates of A seminis showed similar phenotypic profiles and electrophoretic protein patterns to the type strain of A seminis but were distinct from Histophilus ovis previously isolated from rams with epididymitis in Scotland. The infection appeared to be subclinical but two of the five rams had palpable abnormalities of their testes. Three rams were treated with antibiotics but the infection persisted. No gross lesions were found in the genitalia of two of three rams examined post mortem but one had necrotic abscesses in the testes and epididymis. A seminis was isolated from the seminal vesicles and epididymis of one ram without gross lesions but not from the genitalia of the other two. On one farm the infection in a recently purchased ram led to the detection of another case as a result of the bacteriological screening of 11 stock rams not in contact with the initial case. These five subclinical cases, which included a supposedly healthy stock ram, suggest that A seminis infection may be widespread and should be considered in cases of infertility.
Vet Rec 1991 Oct 05
PMID:Isolation of Actinobacillus seminis from rams in the United Kingdom. 174 1

The infertility of many cows could be treated by in vitro fertilisation. In the present study laparoscopy was utilised to recover the in vivo matured oocytes from the ovary of a standing donor. After the capacitation of fresh semen with high ionic strength medium and in vitro fertilisation, a rabbit oviduct was employed as an incubator for four to five days, in order to obtain sufficiently aged embryos to be transferred to the uterus of a recipient. Using surgical or non-surgical transfer six calves were obtained.
Vet Rec 1986 Aug 23
PMID:Birth of calves after in vitro fertilisation using laparoscopy and rabbit oviduct incubation of zygotes. 294 4

A summer infertility syndrome affected three commercial pig herds in Cornwall and was associated with reduced conception rates. The affected sows were housed in kennel and yard accommodation for all or part of gestation. The provision of more shelter accommodation for the dry sows in all three herds resulted in improved fertility. It is concluded that weather conditions between May and September may have adversely affected the fertility of these semi-extensive pig herds.
Vet Rec 1988 Oct 15
PMID:Clinical observations on seasonal infertility in sows in Cornwall. 320 68


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