In two experiments, we examined the effect of administration of cloprostenol at artificial insemination on fertility of multiparous sows. Lactation length was 21 days and only sows exhibiting estrus by 7 days after weaning were included. Cloprostenol was administered by IM injection (175 μg; n = 126) or supplemented in the semen dose (525 μg; n = 129). Control sows (n = 130) received no hormone. In either experiment, there was no effect of any treatment on subsequent litter sizes. In experiment 1, there was no effect of treatment on farrowing rate, but in experiment 2, farrowing rate was higher (p < 0.05) in sows receiving cloprostenol by injection. Taken together, these results indicate no consistent effect of cloprostenol administration by intramuscular injection or by inclusion in the semen dose on sow fertility and so its routine use is not warranted
Effect of cloprostenol treatment at artificial insemination on sow fertility / Kirkwood, Rn; DE RENSIS, Fabio; Silva, P; Gherpelli, M; Alegre, B; Dominguez, Jc. - In: REPRODUCTION IN DOMESTIC ANIMALS. - ISSN 0936-6768. - 42:(2007), pp. 26-28. [10.1111/j.1439-0531.2006.00717.]
Effect of cloprostenol treatment at artificial insemination on sow fertility
DE RENSIS, Fabio
;
2007-01-01
Abstract
In two experiments, we examined the effect of administration of cloprostenol at artificial insemination on fertility of multiparous sows. Lactation length was 21 days and only sows exhibiting estrus by 7 days after weaning were included. Cloprostenol was administered by IM injection (175 μg; n = 126) or supplemented in the semen dose (525 μg; n = 129). Control sows (n = 130) received no hormone. In either experiment, there was no effect of any treatment on subsequent litter sizes. In experiment 1, there was no effect of treatment on farrowing rate, but in experiment 2, farrowing rate was higher (p < 0.05) in sows receiving cloprostenol by injection. Taken together, these results indicate no consistent effect of cloprostenol administration by intramuscular injection or by inclusion in the semen dose on sow fertility and so its routine use is not warranted| File | Dimensione | Formato | |
|---|---|---|---|
|
kirkwood Effect of Cloprostenol Treatment at Artificial Insemination on Sow Fertility - Kirkwood - 2006 - Rep.webarchive
non disponibili
Tipologia:
Documento in Post-print
Licenza:
Creative commons
Dimensione
1.17 MB
Formato
Unknown
|
1.17 MB | Unknown | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
