Relationship of environment temperature and boar facilities with seminal quality

Corcuera, B.D.; Hernández-Gil, R.; Romero, Carmen de Alba; Rillo, Santiago Martín

doi:10.1016/s0301-6226(01)00286-x

Cited by 18 publications

(14 citation statements)

References 7 publications

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“…Even more so loci may account for the quantity and quality of ejaculates (Lin et al, 2006). Pigs adapt quickly to environmental conditions but these may affect production features including reproduction (Corcuera et al, 2002). Morphological changes in genetics occur with increased frequency, and this happens almost regardless of environmental conditions (Chenoweth, 2005).…”

Section: Discussionmentioning

confidence: 99%

“…It is well known that the conditions under which boars are maintained have a significant impact on the quality of their ejaculates (Corcuera et al, 2002). It is believed that during domestication pigs lost their diurnal rhythm of melatonin secretion or it just weakened (Tast et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

“…Temperature is accorded a special role among environmental factors (Corcuera et al, 2002). This is understandable, because it is a factor with a significant effect on differences between seasons.…”

Section: Introductionmentioning

confidence: 99%

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The influence of boar breed and season on semen parameters

Knecht¹,

Środoń²,

Duziński³

2014

SA J. An. Sci.

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The aim of the present study was to demonstrate the influence of boar breed and season on semen parameters. The research material consisted of 31 boars: Polish Large White (PLW), Polish Landrace (PL), and Duroc × Pietrain (D × P), aged 8 to 24 months. The analysed material consisted of 1390 ejaculates, collected during the period January 2010 to October 2012. Semen samples were assessed in terms of semen volume (mL), sperm concentration (× 10 6 m/mL), total number of sperm (× 10 9 ), total number of live sperm (× 10 9 ) and number of insemination doses obtained from one ejaculate (n). In winter, an increase in sperm concentration was observed for the PLW breed. Moreover, an increase in the volume of semen produced for this breed was noted in summer and autumn. Differences between breeds for the total number of sperm and total number of live sperm were observed for the winter and spring periods. The largest semen volume was noted for the PLW breed (276.4 ± 9.66 mL). However, in the analysis of other sperm parameters, boars of this breed demonstrated the poorest results. The highest insemination dose was obtained from breed D × P in winter (26.0 ± 0.51). Correlation analyses indicated that PLW and D × P boars are the least resistant to higher ambient temperatures, and in summer and autumn this resulted in a reduction in sperm concentration (-0.26 and -0.20, respectively).

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The influence of boar breed and season on semen parameters

Knecht¹,

Środoń²,

Duziński³

2014

SA J. An. Sci.

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“…The negative effect of high temperatures may be diminished by management of the ambient control in the AI centre. According to Corcuera et al (2002) boars were probably quite comfortable at 24°C, but if that temperature was coupled with a high stocking rate, high humidity and a high level of ammonia, they would not be comfortable. Huang and Johnson (1996) and Šerniene et al (2002) reported an increase in the percentage of abnormal spermatozoa with age and Clark et al (2003) found a dramatic increase in the average total number of spermatozoa between boars of 8-10 months and up to 14 months of age followed by constancy in this trait after 14 months of age.…”

Section: Seasonal Effectsmentioning

confidence: 99%

Effects in genetic evaluation for semen traits in Czech Large White and Czech Landrace boars

Wolf¹,

Smital²

2009

CZECH J ANIM SCI

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Artificial insemination (AI) has become an important procedure in the global pig industry. Compared with natural service, artificial insemination allows the greater use of genetically superior sires (Oh et al., 2006). Selection practices for AI boars are universally based on the genetic evaluations for economically important traits (Robinson and Buhr, 2005). For example, boars of dam breeds kept in the Czech Republic are mainly selected for average daily gain from birth till the end of the performance test, lean meat content at the end of the test and number of piglets born alive . However, no AI centre can restrict itself to the selection for production and female reproduction traits only, it must also consider factors that enhance the efficiency of the centre such as boar conformation and temperament and sperm quantity and quality. Semen volume, sperm concentration and gross sperm morphology are semen traits that affect the profitability of an AI centre (Robinson and Buhr, 2005).It has been shown that semen traits are heritable traits with heritabilities in the same order of magnitude or higher than those for litter size traits (Rothschild, 1996;Grandjot et al., 1997;Smital et al., 2005;Oh et al., 2006;Wolf, 2009). Therefore, genetic evaluation of semen traits and selection for these traits are possible. On this basis, an animal model was developed and put into practical use for the genetic evaluation of semen traits of pig dam breeds kept in the Czech Republic. The genetic evaluation is based on a large data set and includes all AI boars of both dam breeds. The objective of the present investigation is to present and discuss the effects of the individual fixed factors in the animal model for semen traits. Fixed effects were estimated from a four-trait animal model for semen volume, sperm concentration, motility and percentage of abnormal spermatozoa and from single-trait animal models for the total number of spermatozoa and the number of functional spermatozoa. Both the total number of spermatozoa and the number of functional spermatozoa were highest in winter and lowest in summer. Boar's age had a strong influence on semen volume, the total number and the functional number of spermatozoa; these traits increased especially in the first phase. The percentage of abnormal spermatozoa also increased with age. An interval between successive collections of 7 to 10 days yielded the best values for all semen traits. As semen traits are of direct economic importance for AI centres, it can be expected that the estimation of breeding value for semen traits will become important and that AI centres will choose among top boars for production and female reproduction traits the boars with better semen production.

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“…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] . Other than genetic factors also affect boar performance, and these include boar's age [8] , year season [9,10] , changing photoperiod [11] , feeding [12] , as well as the time interval between ejaculations [13] . It has been found that ejaculation performance in boars is also related with the size of the testes [14] .…”

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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Relationship of environment temperature and boar facilities with seminal quality

Cited by 18 publications

References 7 publications

The influence of boar breed and season on semen parameters

The influence of boar breed and season on semen parameters

Effects in genetic evaluation for semen traits in Czech Large White and Czech Landrace boars

Mikro Klima İklim Şartlarının Erkek Damızlık Domuzlardaki Ejekulasyon Kalitesine Etkileri

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