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Szenci O, Sassi G, Fodor L, Molnár L, Szelényi Z, Tibold J, Mádl I, Egyed L. Co-infection with Bovine Herpesvirus 4 and Histophilus somni Significantly Extends the Service Period in Dairy Cattle with Purulent Vaginal Discharge. Reprod Domest Anim 2015; 51:143-9. [PMID: 26690881 DOI: 10.1111/rda.12658] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 11/17/2015] [Indexed: 11/29/2022]
Abstract
The aim of the study was to investigate the effect of Bovine Herpesvirus 4 (BoHV-4) and Histophilus (H.) somni on fertility rate of cows in a Hungarian Holstein-Friesian dairy herd with purulent vaginal discharge (PVD). Non-pregnant cows (n = 188) with mature corpus luteum were treated with cloprostenol and 3 days later if they did not show oestrus, were examined by rectal palpation. Animals showing PVD (n = 60/31.9%/) and 14 controls with normal vaginal discharge (Score 0) were randomly selected and further examined by ultrasonography and blood samples were collected for detecting BoHV-4 DNA and transcervical guarded swabs were collected from the uterus for bacteriological examination. Although the majority of the examined animals were infected with BoHV-4 and H. somni including the control animals as well, in group of animals with PVD score 3, fewer animals became pregnant and the duration between the first treatment to pregnancy was significantly extended. Based on these clinical and comparative data, our results confirm that these two microorganisms together may impair important reproductive parameters which may cause large economic losses to dairy farms.
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Affiliation(s)
- O Szenci
- MTA-SZIE Large Animal Clinical Research Group, Üllő-Dóra major, Hungary.,Department and Clinic for Production Animals, Faculty of Veterinary Science, Szent István University, Üllő-Dóra major, Hungary
| | - G Sassi
- Department and Clinic for Production Animals, Faculty of Veterinary Science, Szent István University, Üllő-Dóra major, Hungary
| | - L Fodor
- Department of Microbiology and Infectious Diseases, Faculty of Veterinary Science, Szent István University, Budapest, Hungary
| | - L Molnár
- Department and Clinic for Production Animals, Faculty of Veterinary Science, Szent István University, Üllő-Dóra major, Hungary
| | - Z Szelényi
- MTA-SZIE Large Animal Clinical Research Group, Üllő-Dóra major, Hungary.,Department and Clinic for Production Animals, Faculty of Veterinary Science, Szent István University, Üllő-Dóra major, Hungary
| | | | - I Mádl
- Agroproduct Zrt, Pápa, Hungary
| | - L Egyed
- Agricultural Research Center, Veterinary Medical Research Institute, Hungarian Academy of Sciences, Budapest, Hungary
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Atanasov AS, Dineva JD, Yotov SA. Ultrasonic evaluation of uterine involution in Bulgarian Murrah buffalo after administration of oxytocin. Anim Reprod Sci 2012; 133:71-6. [PMID: 22727033 DOI: 10.1016/j.anireprosci.2012.06.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 05/29/2012] [Accepted: 06/04/2012] [Indexed: 11/17/2022]
Abstract
The aim of this study was to determine the time taken for complete uterine involution in Bulgarian Murrah buffaloes following normal parturition and oxytocin stimulated milking; and to establish the time course of the change in size of the uterine horns, the cervix and caruncles between parturition and involution by means of ultrasonography. There were 17 animals in the study aged 3-6 years and average parity of 2.17 ± 0.18. They were administered 20 IU oxytocin 15 min before each milking. Rectal palpation and transrectal ultrasonography were performed at 3 d intervals from Days 1 to 34 post partum. The involution of the non-gravid and gravid uterine horns, and the cervix was complete by Days 22 and 25 post partum when their diameters were 2.7 ± 0.4 cm, 2.8 ± 0.3 cm and 3.12 ± 0.4 cm, respectively. Caruncles underwent rapid regression until Day 10 post partum. It was not possible to determine the dimensions of the caruncles after that time. The cumulative percentage of animals whose uterus was located in the pelvic cavity increased from 24% at Day 10 post partum to 100% at Day 34 post partum. The combination of rectal palpation and transrectal ultrasonography provided a reliable method of evaluating changes in the uterus over time and determining the time of uterine involution. The present study showed that complete uterine involution, with the uterus located in the pelvic cavity, was achieved by Day 34 after parturition in all 17 Bulgarian Murrah buffaloes treated with oxytocin before milking.
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Affiliation(s)
- Anatoli S Atanasov
- Department of Obstetrics, Reproduction and Reproductive Disorders, Faculty of Veterinary Medicine, Trakia University, Student Campus, Stara Zagora, Bulgaria.
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