The influence of boar breed and season on semen parameters

Knecht, Damian; Środoń, Sebastian; Duziński, Kamil

doi:10.4314/sajas.v44i1.1

Cited by 42 publications

(35 citation statements)

References 33 publications

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“…The seasons should not affect sperm motility (Knecht et al, 2014). In our experiment, in both groups, sperm motility ranged around 70 % throughout the experiment, with daytime peak reaching 28 °C for several days.…”

Section: Discussionmentioning

confidence: 83%

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Elimination the Impact of Heat Stress by Supplementation of Antioxidants Into Diet of Duroc Boars

Přibilová

Horký

Nevrkla

et al. 2018

Acta Univ. Agric. Silvic. Mendelianae Brun.

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The aim of this experiment was to find out, if is it possible to eliminate the impact of heat stress on quality of Duroc boar ejaculate by the addition of complex of antioxidants (Selenium, Zinc, Vit. C and Vit. E) into the basic diet. The experiment was carried out at the station of insemination in Velke Mezirici (Czech Republic) from May to September. For the study were chosen 12 Duroc boars, of approximately the same age and weight, and were divided into two groups. The control group (n = 6) was fed only by basic diet, the experimental group (n = 6) was fed by basic diet with the supplementation of antioxidants in amount: 0.5 mg selenium (seleno-methionine), 70 mg zinc (zinc-methionine), 70 mg vit. E (alpha-tocopherol) and 350 mg vit. C (L-ascorbic acid) per kilogram of basic diet. Monitored parameters of ejaculate was volume of ejaculate (ml), concentration of sperm (10 6 / ml), total rate of sperm (10 9 ), motility of sperm (%) and amount of morphologically abnormal sperm (%). The control group reported slight increase in volume of ejaculate (of 19 %), which is common in summer months. At the same time was the concentration of sperm unstable, during August there was an increase of 15 %, but during September concentration decreased below the initial amount. Motility was around 69 % during whole experiment. There was an increase (of 15 %) in amount of morphologically abnormal sperm, but the result was insignificant. The experimental group had a higher volume of ejaculate, but the diagram of volume of ejaculate was almost the same with the control group. Concentration of sperm increased after the supplementation of antioxidants (of 23 %) and during the experiment decreased only slightly. Motility was about average amount 70 % and was not various during the experiment. In amount of morphologically abnormal sperm there was an increase about 12 %. According to the results, the supplementation of antioxidants had no significant effect on improving of semen quality. But the addition could have a positive effect to stable the parameters of ejaculate.

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Section: Discussionmentioning

confidence: 83%

“…On the contrary, during the summer months, the highest value reached in the ejaculate volume (Smital, 2008). In an experiment by Knecht et al, (2014), it has been shown that sperm concentration decreases with a higher volume of ejaculate. We cannot fully confirm this hypothesis in our experiment.…”

Section: Discussionmentioning

confidence: 99%

Elimination the Impact of Heat Stress by Supplementation of Antioxidants Into Diet of Duroc Boars

Přibilová

Horký

Nevrkla

et al. 2018

Acta Univ. Agric. Silvic. Mendelianae Brun.

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“…These results in conformity with data published by Ciereszko et al [9] and Trudeau and Sanford [29] , who analyzed ejaculates in relation to the season of semen collection. According to Knecht et al [6] , a high sperm concentration in ejaculates collected in winter results from lower temperatures, which has a positive effect on spermatogenesis. Auvigne [30] believes that this effect is due to the close kinship between the modern breeds of pigs and the European wild boar, for which the period of breeding activity is in late autumn and early winter, a period of a shortening length of daylight.…”

Section: The Data Presented Inmentioning

confidence: 99%

“…These include genetics, primarily the breed of the boar [5,6] . Crossbred boars, which attain sexual maturation sooner, grow faster and have a better breeding performance, as compared with pure-bred pigs, have found a wide application in artificial insemination [7] .…”

Section: Introductionmentioning

confidence: 99%

Mikro Klima İklim Şartlarının Erkek Damızlık Domuzlardaki Ejekulasyon Kalitesine Etkileri

KOWALEWSKI¹,

Kondracki²,

Górski³

et al. 2015

Kafkas Univ Vet Fak Derg

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The study was carried out on 1913 ejaculates collected from 51 Landrace boars. The ejaculates were collected manually. The study included all ejaculates collected by one artificial insemination station over a span of 12 consecutive months. The ejaculates were subjected to the standard analysis which involved: ejaculate volume, sperm concentration, percentage of progressive motility spermatozoa, total number of spermatozoa, and number of artificial insemination doses per ejaculate. Temperature, relative air humidity, and atmospheric pressure in the piggery were monitored during the semen collections. The resulting data were grouped by air temperature, humidity and pressure, and analyzed. It has been found that the microclimate in the place of semen collection may affect the quality of the collected semen. This effect is varied; temperature, humidity and atmospheric pressure act differently in relation to the semen traits. Temperature and atmospheric pressure have an effect on sperm concentration. Ejaculates with the highest sperm concentrations were collected at the lowest measured temperatures (10°C and lower) as well as with the lowest relative air humidity. Sperm motility revealed a strict and oriented relationship with both temperature and humidity, but also with atmospheric pressure. Semen collected at the lowest air humidity (50% and lower) and at the lowest observed atmospheric pressure (below 900 hPa) contained the most sperm. The highest number of artificial insemination doses are produced from ejaculates collected in such conditions. Keywords: Microclimate, Semen quality, Artificial insemination boars Mikro Klima İklim Şartlarının Erkek Damızlık Domuzlardaki Ejekulasyon Kalitesine Etkileri ÖzetAraştırma Landrace cinsi 51 erkek damızlık domuzdan alınan 1913 ejekulasyonda gerçekleştirilmiştir. Numuneler el yöntemiyle alınmıştır. Ejekulasyonlar sonraki 12 ay süresince uygulanacak yapay döllenme için tek bir domuz yetiştirme istasyonundan elde edilmiştir. Standart tahliller olan, semen hacmi, spermlerin konsantrasyonu, hareketli sperm sayısının oranı, toplam sperm sayısı ve yapay döllenmedeki doz sayısı analizleri yapılmıştır. Semen örneği alımı sırasında damızlık hayvanların bulundupu yerdeki atmosfer basıncı, havadaki nem ve sıcaklık durumu izlenmiştir. Elde edilen veriler, sıcaklık, nem ve hava basıncına göre gruplandırılmış vede tekrar analiz edilmiştir. Bu çalışmalar neticesinde damızlık hayvanların tutulduğu yerdeki mikro klima şartlarının semen kalitesine etkisi olabileceği görülmüştür. Sıcaklık, nem ve atmosfer basıncı sperm özelliklerine farklı biçimde etki etmektedir. Sıcaklık ve atmosfer basıncı spermlerin konsantrasyonunu doğrudan etkilemektedir. En yüksek sperm konsantrasyonu bulunan ejekulasyonlar, havaya göre en düşük nem ortamı vede en düşük sıcaklıkta (10°C ve aşağısı) elde edilmiştir. Sperm motilitesinin hava basıncı, nem ve sıcaklığa doğrudan bağlı olduğu ortaya çıkmıştır. En fazla sayıda sperm miktarı, en düşük nem oranlarında yani %50 ve daha azı ile 900 hPa hava basıncı şartlar...

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“…Ejaculate parameters are also affected by the season of the year, ambient temperature and daylight duration, semen collection frequency, and other factors (18,30). The ejaculates of individual animals differ in physical traits and in the incidence of morphological defects in the spermatozoa (19).…”

Section: Introductionmentioning

confidence: 99%

Assessment of stallion semen morphology using two different staining methods, microscopic techniques, and sample sizes

Lacka

Kondracki

Iwanina

et al. 2016

Journal of Veterinary Research

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Introduction: The aim of this study was to propose the optimal methodology for stallion semen morphology analysis while taking into consideration the staining method, the microscopic techniques, and the workload generated by a number of samples. Material and Methods:Ejaculates from eight pure-bred Arabian horses were tested microscopically for the incidence of morphological defects in the spermatozoa. Two different staining methods (eosin-nigrosin and eosin-gentian dye), two different techniques of microscopic analysis (1000× and 400× magnifications), and two sample sizes (200 and 500 spermatozoa) were used. Results: Well-formed spermatozoa and those with major and minor defects according to Blom's classification were identified. The applied staining methods gave similar results and could be used in stallion sperm morphology analysis. However, the eosin-nigrosin method was more recommendable, because it allowed to limit the number of visible artefacts without hindering the identification of protoplasm drops and enables the differentiation of living and dead spermatozoa. Conclusion: The applied microscopic techniques proved to be equally efficacious. Therefore, it is practically possible to opt for the simpler and faster 400x technique of analysing sperm morphology to examine stallion semen. We also found that the number of spermatozoa clearly affects the results of sperm morphology evaluation. Reducing the number of spermatozoa from 500 to 200 causes a decrease in the percentage of spermatozoa identified as normal and an increase in the percentage of spermatozoa determined as morphologically defective.

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The influence of boar breed and season on semen parameters

Cited by 42 publications

References 33 publications

Elimination the Impact of Heat Stress by Supplementation of Antioxidants Into Diet of Duroc Boars

Elimination the Impact of Heat Stress by Supplementation of Antioxidants Into Diet of Duroc Boars

Mikro Klima İklim Şartlarının Erkek Damızlık Domuzlardaki Ejekulasyon Kalitesine Etkileri

Assessment of stallion semen morphology using two different staining methods, microscopic techniques, and sample sizes

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