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Pregnancy diagnosis, normal pregnancy and parturition in the bitch
/content/chapter/10.22233/9781905319541.chap10
Pregnancy diagnosis, normal pregnancy and parturition in the bitch
- Author: Catharina Linde Forsberg
- From: BSAVA Manual of Canine and Feline Reproduction and Neonatology
- Item: Chapter 10, pp 89 - 97
- DOI: 10.22233/9781905319541.10
- Copyright: © 2010 British Small Animal Veterinary Association
- Publication Date: January 2010
Abstract
It is important that the veterinary surgeon understands the normal physiology of pregnancy and parturition and is able to make an accurate diagnosis of pregnancy and non-pregnancy to provide a relevant clinical service for their clients. This chapter considers pregnancy diagnosis; normal pregnancy; clinical assessment in the peripartum period; fetal disposition; the postpartum period.
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10.1
The best sign of impending parturition in the bitch is the marked drop in rectal temperature. During the last week of pregnancy, the temperature will fluctuate because release of prostaglandins causes a transient fall in peripheral plasma progesterone concentration, and progesterone is thermoregulatory. During the first stage of labour the temperature drop is more pronounced, and the bitch should be in the second stage of labour within 12 hours after reaching the lowest temperature and before the temperature has returned to normal. © 2010 British Small Animal Veterinary Association
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10.1
The best sign of impending parturition in the bitch is the marked drop in rectal temperature. During the last week of pregnancy, the temperature will fluctuate because release of prostaglandins causes a transient fall in peripheral plasma progesterone concentration, and progesterone is thermoregulatory. During the first stage of labour the temperature drop is more pronounced, and the bitch should be in the second stage of labour within 12 hours after reaching the lowest temperature and before the temperature has returned to normal.
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10.2
Fetus and the fetal membranes in the bitch. Drawn by S.J. Elmhurst BA Hons (www.livingart.org.uk) and reproduced with her permission. © 2010 British Small Animal Veterinary Association
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10.2
Fetus and the fetal membranes in the bitch. Drawn by S.J. Elmhurst BA Hons (www.livingart.org.uk) and reproduced with her permission.
/content/figure/10.22233/9781905319541.chap10.ch10fig3
10.3
(a) A puppy in intact fetal membranes, following delivery by Caesarean operation. (b) The fetal membranes have been opened and the puppy is gasping for air. © 2010 British Small Animal Veterinary Association
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10.3
(a) A puppy in intact fetal membranes, following delivery by Caesarean operation. (b) The fetal membranes have been opened and the puppy is gasping for air.
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10.4
Normal birth of puppies in anterior and posterior presentation. Drawn by S.J. Elmhurst BA Hons (www.livingart.org.uk) and reproduced with her permission. © 2010 British Small Animal Veterinary Association
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10.4
Normal birth of puppies in anterior and posterior presentation. Drawn by S.J. Elmhurst BA Hons (www.livingart.org.uk) and reproduced with her permission.
/content/figure/10.22233/9781905319541.chap10.ch10fig5
10.5
‘Feathering’. The roof of the vagina is ‘tickled’ with the fingers to stimulate uterine contractions. Drawn by S.J. Elmhurst BA Hons (www.livingart.org.uk) and reproduced with her permission. © 2010 British Small Animal Veterinary Association
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10.5
‘Feathering’. The roof of the vagina is ‘tickled’ with the fingers to stimulate uterine contractions. Drawn by S.J. Elmhurst BA Hons (www.livingart.org.uk) and reproduced with her permission.
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