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https://hdl.handle.net/2440/94324
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Type: | Journal article |
Title: | Double cloprostenol administration during mid luteal phase of oestrous cycle does not modify the interoestrous interval in gilts |
Author: | Mazzoni, C. Saleri, R. Kirkwood, R. Macchi, E. Mongkol, T. De Rensis, F. |
Citation: | Italian Journal of Animal Science, 2014; 13(3):527-529 |
Publisher: | PAGEPress |
Issue Date: | 2014 |
ISSN: | 1594-4077 1828-051X |
Statement of Responsibility: | Claudio Mazzoni, Roberta Saleri, Roy N. Kirkwood, Elisabetta Macchi, Techakumphu Mongkol, Fabio De Rensis |
Abstract: | The present study was undertaken to test the effect of two vulva injections of D-cloprostenol on day 7, 9 and 10 of oestrous cycle on the duration of the interestrous interval in gilts. Following a pre-treatment oestrous cycle, 87 gilts were assigned to receive vulva injections of 75 μg D-cloprostenol at 08:00 and 14:00 h on day 7 (D7; n=30), day 9 (D9; n=29) or day 10 (D10; n=28) of their second observed oestrous cycle. Across the treatments, the duration of the oestrous cycle with D-cloprostenol treatment (19.1±0.1 d) was not different from that of the previous oestrous cycle (20.1±0.4 days). Plasma progesterone concentrations were evaluated 6 h before and 24 and 72 h after D-cloprostenol treatment in the D9 group. Compared to pretreatment levels (9.6±0.4 ng/mL), plasma progesterone concentrations were reduced (P<0.05) at 24 h (6.3±1.0 ng/mL) and 72 h after treatment but complete luteolysis did not occur. These data indicate that in gilts double vulva administration of D-cloprostenol is not able to induce a complete luteolisys and hence the duration of the oestrous cycle is not modified. |
Keywords: | Gilts; Prostaglandin; Luteolysis; Progesterone |
Rights: | Copyright status unknown |
DOI: | 10.4081/ijas.2014.3318 |
Published version: | http://dx.doi.org/10.4081/ijas.2014.3318 |
Appears in Collections: | Animal and Veterinary Sciences publications Aurora harvest 7 |
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