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Freezability and fertility of frozen-thawed boar semen supplemented with ostrich egg yolk lipoproteins

L. Fraser Ł. Zasiadczyk J. Strzeżek R. Strzeżek K. Karpiesiuk

Polish Journal of Veterinary Sciences | 2018 | vol. 21 | No 2 | 255–263 | DOI: 10.24425/119046

Keywords boar egg yolk lipoproteins cryopreservation artificial insemination

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Abstract

Lipoproteins, isolated from ostrich egg yolk (LPFo), provide excellent protection for boar spermatozoa against cryo-induced damage. The present study was performed to investigate the effects of LPFo on the freezability and fertilizing capacity of frozen-thawed (FT) boar semen after post-cervical artificial inseminations (post-CAIs). Semen, collected from 7 Polish Large White (PLW) and 4 Polish Landrace (PLR), was frozen in an extender containing LPFo. Post-CAIs were performed in 38 multiparous sows, using a catheter-cannula kit. Sows were inseminated 2× within one oestrus, and fertility parameters were recorded after farrowing. Neither boar (within breed) nor breed affected the quality of the pre-freeze (PF) semen, such as total motility (TMOT), mitochondria membrane potential (MMP), plasma membrane integrity (PMI), osmotic resistance test (ORT) and DNA fragmentation. Differences in the freezability of boar semen were observed among the boars, whereas there were no marked breed effects. Post-thaw TMOT markedly declined over storage time in most of the boars, particularly at 60 min after thawing. Inseminations of post-weaned oestrus sows resulted in pregnancy and farrowing rates of 84.2% and 81.6%, respectively. Neither the mean number of piglets born (NB) nor the mean number of piglets born alive (NBA) was affected by boar or breed. The total number of piglets born was 365, resulting in 11.8 NB piglets, whereas the total number of piglets born alive was 353, with 11.4 NBA piglets per litter. The findings of this study reaffirm the variations in the freezability of boar semen. In this study the supplementation of ostrich egg yolk lipoproteins to the freezing extender of boar semen produced high proportions of functionally viable FT spermatozoa that were capable of providing acceptable fertility results after post-CAIs in multiparous sows.

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Authors and Affiliations

L. Fraser

Ł. Zasiadczyk

J. Strzeżek

R. Strzeżek

K. Karpiesiuk

Reproductive performance with short-time controlled internal drug release (CIDR)-based synchronization protocol for fixed-time artificial insemination in nulliparous and primiparous Saanen goats

S. Ozis Altincekic M. Koyuncu

Polish Journal of Veterinary Sciences | 2022 | vol. 25 | No 1 | 13-18 | DOI: 10.24425/pjvs.2022.140835

Keywords goat fixed time artificial insemination CIDR nulliparous primiparous

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Abstract

In this study, it was aimed to evaluate the reproductive performance of primiparous and nulliparous Saanen goats following the insemination made cervically via frozen commercial buck semen with short-time controlled internal drug release (CIDR, Eazi-Breed, Pfizer)-based synchronization. In the study, a total of 50 Saanen goats, 26 of which were aged 9 months and 24 of which were aged 2 years, were used. The CIDRs including 0.33 g of progesterone were applied to all the goats for 7 days and while the CIDRs were taken out of the vagina, the 500 IU equine chorionic gonadotropin (eCG) was injected intramuscularly. The first dose was administered in a fixed-time manner with mini straws of 0.25 ml including 300x106 motile frozen spermatozoa 24 hours after the injection without making estrus detection, and the second dose insemination was applied 24 hours later. In the study, although the pregnancy rate, fecundity, prolificacy and multiple birth rate values (83%, 1.25, 1.50 and 60%) obtained in the primiparous goats were found to be higher than those found in the nulliparous age group (80%, 0.84, 1.05 and 38%), they were not statistically significant. It was concluded that the effects of the CIDR-based double-dose insemination applications in the primiparous and nulliparous Saanen breed goats in breeding season for 7 days on fertility were similar and the cervical insemination method, a quick and more practical option compared to the intrauterine insemination, could be used successfully in both age groups.

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Authors and Affiliations

S. Ozis Altincekic

1

M. Koyuncu

1

Bursa Uludag University, Faculty of Agriculture, Department of Animal Science, 16059, Bursa, Turkey

Effect of single treatment with cloprostenol or dinoprost on estrus and reproductive performance in anestrous dairy cows after service

A. Baryczka W. Barański A. Nowicki S. Zduńczyk T. Janowski

Polish Journal of Veterinary Sciences | 2018 | vol. 21 | No 2 | 383–387 | DOI: 10.24425/122609

Keywords prostaglandin F2α silent heat after artificial insemination fertility cow

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Abstract

Previous studies have compared the effectiveness of dinoprost and cloprostenol in cows yielding conflicting results. The aim of our study was to evaluate the efficacy of single treatment with cloprostenol or dinoprost on estrus and reproductive performance in cows with unobserved estrus after service. The study was conducted over four years in two dairy herds of Polish Holstein Frisian cows under a herd health program with an average milk yield per cow over 9000 L. Cows (n=523) diagnosed ultrasonographically as non-pregnant and with a corpus luteum were randomly assigned to be treated with either cloprostenol (n=261) or dinoprost (n=262). The estrus detection rates after administration of cloprostenol or dinoprost were 59.4%, and 57.6%, respectively. The difference between both groups was not statistically significant (p>0.05). Distribution of observed estrus did not differ between cloprostenol and dinoprost. There were no differences (p>0.05) between cloprostenol and dinoprost in conception rate (65.2% vs. 66.2%, respectively) and pregnancy rate (57.5% vs. 54.9%, respectively). Mean days open were similar in cows of both treatments (177.5 ± 74.6 days vs. 175.8 ± 62.6 days, respectively; p>0.05). In conclusion, data from this study showed no significant differences in estrus detection rates and fertility between cows with unobserved estrus after service treated with cloprostenol or dinoprost. Both products are equally useful for the treatment of non-pregnant dairy cows with anestrus after service within a reproductive herd health program.

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Authors and Affiliations

A. Baryczka

W. Barański

A. Nowicki

S. Zduńczyk

T. Janowski

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Freezability and fertility of frozen-thawed boar semen supplemented with ostrich egg yolk lipoproteins

Abstract

Authors and Affiliations

Reproductive performance with short-time controlled internal drug release (CIDR)-based synchronization protocol for fixed-time artificial insemination in nulliparous and primiparous Saanen goats

Abstract

Bibliography

Authors and Affiliations

Effect of single treatment with cloprostenol or dinoprost on estrus and reproductive performance in anestrous dairy cows after service

Abstract

Authors and Affiliations