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Pulsatile administration of gonadotropin releasing hormone (Gn-RH) to lactating sows using a portable automatic pump (“Zyklomat”)

Pulsativ infusion av GnRH till digivande suggor med hjälp av en bärbar automatisk pump ( “Zyklomat”)

Acta Veterinaria Scandinavica volume 26, pages 442–448 (1985)Cite this article

Abstract

The object of this investigation was to study the feasibility of using a “Zyklomat roller peristaltic pump” for pulsatile administration of gonadotropin releasing hormone (Gn-RH) in primiparous lactating sows. Four primiparous sows were used. The pump catheter was inserted into a jugular vein on day 8 or day 22 of lactation. The pump delivered a 1 min Gn-RH pulse of 10 μg every 89 min for 7 days. The pump worked without any complication or detrimental effect on the sows throughout the experimental period. Two sows showed standing oestrus during lactation and one of them ovulated. It can be concluded that the “Zyklomat” pump can be used for pulsatile infusion of Gn-RH in lactating sows.

Sammanfattning

Ändamålet med föreliggande undersökning var att fastställa om det är möjligt att tillföra Gn-RH till digivande ungsuggor med hjälp av en bärbar pump benämnd “Zyklomat roller peristaltic pump”. Fyra digivande ungsuggor an vändes i försöket. Katetern till pumpen place-rades i ena jugularvenen på dag 8 eller dag 22 av diperioden. Pumpen injicerade 10 μg GnRH under en minut var 89:e minut under 7 dagar. Pumpen fungerade utmärkt och suggorna visade inga tecken på oro eller besvär av att ha pumpen apterad på ryggen. Två suggor visade brunst med ståreflex under diperioden, en av dessa två ovulerade. Sammanfattningsvis visade denna studie att “Zyklomat”-pumpen är användbar för pulsativ infusion av Gn-RH till digivande suggor.

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Authors and Affiliations

  1. Department of Obstetrics and Gynaecology, College of Veterinary Medicine, Swedish University of Agricultural Sciences, S-750 07, Uppsala, Sweden

    S. Rojanasthien, A. Kunavongkrit, S. Einarsson & B. Thorell

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  1. S. Rojanasthien
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  2. A. Kunavongkrit
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  3. S. Einarsson
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  4. B. Thorell
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Rojanasthien, S., Kunavongkrit, A., Einarsson, S. et al. Pulsatile administration of gonadotropin releasing hormone (Gn-RH) to lactating sows using a portable automatic pump (“Zyklomat”). Acta Vet Scand 26, 442–448 (1985). https://doi.org/10.1186/BF03546516

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  • DOI: https://doi.org/10.1186/BF03546516

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Acta Veterinaria Scandinavica

ISSN: 1751-0147