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Biomedical subjects

C Linde

Publications and source records attributed to C Linde.

46 records · Page 3Linked to original sources
PubMed1983

Partial abortion associated with genital Escherichia coli infection in a bitch.

A five-and-a-half weeks pregnant Airedale terrier with a genital haemorrhage was presented. It had a history of oestrous irregularities. It was found to be anaemic and Escherichia coli was isolated from vaginal swabs. Oestradiol and progesterone levels were normal. Two fetuses were aborted on day 41 of gestation. Antibiotic treatment was given. The haemorrhage ceased but on day 61 an abnormal vaginal discharge was seen. A caesarean operation was performed from which resulted three dead and two live fetuses, which died within two days. E coli was isolated from the uterine content, although the bitch was still receiving antibiotics; it was also still anaemic. It is probable that the haemorrhage was caused by an endotoxin produced by the E coli. The anaemia in the bitch did not improve the chances of fetal survival.

Abortion, Septic↗
PubMed1975

[Determination of progesterone in peripheral blood-plasma as a diagnostic aid in female swine (author's transl.)].

The determination of the peripheral plasma level of progesterone was evaluated as a clinical aid in the gynaecological diagnosis of female pigs. The normal cyclic variation of the peripheral plasma level of progesterone was determined in six cross bred gilts (Swedish Landrace times Swedish Yorkshire Breed) which were examined daily for the stages of oestrus. The results of this investigation are given in fig. 1. Peripheral plasma levels of progesterone were determined in 16 gilts with the clinical diagnosis of "silent heat". Despite all 16 gilts being sexually mature none of them had shown clinical signs of heat. The gilts belonged to 3 different farms, on all of which there was a high incidence of "silent heat". At least two blood samples were drawn 7 days apart from each of the gilts. Of the gilts examined 12 had variations in peripheral plasma level of progesterone. Of these 12 animals only 5 had clinical signs of heat, although the farmer had been advised, from the progesterone analysis, on the probable day of occurrence of heat. In 3 of the gilts, treatment with hormones (PMSCG) elicited the standing reflex when they were placed with a boar. In Table I is given some examples of the relationship of clinical signs of heat and the peripheral plasma level of progesterone. The peripheral plasma level of progesterone was also used as an early pregnancy diagnosis test in gilts. The gilts used in this investigation were all artificially inseminated with deep frozen boar semen. The expected pregnancy rate after insemination was 50%. Blood samples were drawn 17-25 days after insemination of 84 gilts. Peripheral plasma level of progesterone equal to or higher than 7.5 ng/ml were considered to indicate pregnancy. All gilts were slaughtered 4 weeks after the insemination and the number of fetuses were counted. A correct pregnancy diagnosis by the estimation of peripheral plasma level of progesterone was obtained in 95.2% of the gilts. The incorrect diagnoses were all false positives, viz. non-pregnant gilts were diagnosed as pregnant.

Animals↗
PubMedDate not supplied

Reproductive performance in gilts through their first two parities.

Fertility data were collected for 766 gilts from 12 breeding and commercial herds. The age at first breeding was 244.5 days and at first farrowing 363.2 days. The litter size was 9.91 piglets born (9.16 live). The farrowing rate at the first service was 87.8%. The total farrowing rate was 95.5% of the mated gilts and 88.4% of all the gilts. 9.8% were repeat breeders. 2.6% of the once mated gilts never returned to oestrus and still did not farrow. The culling rate was 11.6%. The major reason for culling was delayed puberty/anoestrus (7.7%). Of the 565 gilts having a first litter 85.3% were mated after weaning. The age at second farrowing was 541.7 days. The litter size was 10.9 piglets born (10.3 live). The farrowing rate after first service was 83.0%. The total farrowing rate of the 482 sows was 92.9% and of the 565 weaned sows 79.3%. 12.2% were repeat breeders. 4.8% of the sows once mated never returned to oestrus and still did not farrow. The culling rate was 20.7%. Culling because of anoestrus was 4.4%. The month of birth significantly influenced the number of gilts culled because of anoestrus, the age at first breeding and at first and second farrowing. The season also influenced the interval from weaning to service, the percentage of sows served within 7 days of weaning and culled because of anoestrus. No correlation between a high ultrasonic index and lowered fertility was found. The age at first breeding was 1.12 days younger per unit higher ultra-sonic index.

Animals↗