Biological potential of fecundity of sows

Wähner, M.; Brüssow, Klaus‐Peter

doi:10.2298/bah0906523w

Cited by 6 publications

(5 citation statements)

References 25 publications

(30 reference statements)

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“…In summary, photo-stimulation improves the boar sperm response to phenomena like the achievement of a feasible capacitation status. Regarding this point, one should take into account that the number of ovulated oocytes is greater than is the final number of implanted embryos 50 . This implies that the number of total embryos that a sow can produce after an ovulation does not depend on the total number of ovulated oocytes, but rather on the number of oocytes that are optimally fecundated.…”

Section: Discussionmentioning

confidence: 99%

Specific LED-based red light photo-stimulation procedures improve overall sperm function and reproductive performance of boar ejaculates

Yeste

Codony²,

Estrada

et al. 2016

Sci Rep

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The present study evaluated the effects of exposing liquid-stored boar semen to different red light LED regimens on sperm quality and reproductive performance. Of all of the tested photo-stimulation procedures, the best pattern consisted of 10 min light, 10 min rest and 10 min of further light (10-10-10 pattern). This pattern induced an intense and transient increase in the majority of motility parameters, without modifying sperm viability and acrosome integrity. While incubating non-photo-stimulated sperm at 37 °C for 90 min decreased all sperm quality parameters, this reduction was prevented when the previously-described light procedure was applied. This effect was concomitant with an increase in the percentage of sperm with high mitochondrial membrane potential. When sperm were subjected to ‘in vitro’ capacitation, photo-stimulation also increased the percentage of sperm with capacitation-like changes in membrane structure. On the other hand, treating commercial semen doses intended for artificial insemination with the 10-10-10 photo-stimulation pattern significantly increased farrowing rates and the number of both total and live-born piglets for parturition. Therefore, our results indicate that a precise photo-stimulation procedure is able to increase the fertilising ability of boar sperm via a mechanism that could be related to mitochondrial function.

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Section: Discussionmentioning

confidence: 99%

Specific LED-based red light photo-stimulation procedures improve overall sperm function and reproductive performance of boar ejaculates

Yeste

Codony²,

Estrada

et al. 2016

Sci Rep

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“…Reproductive traits such as litter size, litter weight at birth and survival rates of piglets to weaning, are the most important economic trait in swine production (Yen et al, 1987). The objective of modern pig breeding is to exhaust the genetic potential in reproduction performance of sows regarding to litter size and number of weaned piglets per litter (Wähner and Brüssow, 2009). Litter size is one of the most important reproductive traits.…”

Section: Introductionmentioning

confidence: 99%

Estimation of heritability coefficients of number of born alive piglets in the first three farrowings swedish landrace sows

Savić¹,

Petrović²,

Radović

2011

BIOTEC ANIM HUSB

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The main objective of this study was to evaluate phenotypic and genetic variation of the number of piglets born alive (NBA) Swedish Landrace sows (SL) in three consecutive parities under the influence of sires, year and season of mating. The study included: 618 litters in the first, 470 in the second and 403 litter in the third farrowing. Testing the homogeneity of variance was performed with Levene's test. The data were analyzed using analysis of variance (Statistica Ver. 6.0., 2003). Heritability coefficients were evaluated by intra-class correlation. Swedish Landrace sires have influenced on the variability of the NBA's daughter in the first and second farrowing (p<0.05), but not in the third farrowing. Year and season of mating was not influenced on the variability of the NBA (p>0.05). The estimated heritability coefficients for the NBA were the highest in the second (0.123), then the first (0.092) and lowest in the third farrowing (0.030).

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“…Na OrdP1, as matrizes dos GGen2 e GGen3 tiveram maior número de partos/ano, enquanto na OrdP2, o desempenho para esta característica foi semelhante entre os três GGen avaliados. Waehner & Bruessow (2009), ao estudarem o potencial de fertilidade de fêmeas Landrace (cruzadas), Large White e Pietrain na Alemanha, encontraram que o melhor desempenho foi obtido em matrizes Landrace cruzadas, com 2,26 partos/ano. No presente estudo, o efeito do manejo adotado na granja pode ter interferido no número de P/F/A de matrizes do GGen3, pois estas amamentaram por períodos mais curtos e, consequentemente produziram maior número de partos/ano.…”

Section: Resultsunclassified

Grupo genético e ordem de parto no desempenho produtivo e reprodutivo de matrizes suínas

Rosa

Souza

Filho

et al. 2015

Rev. bras. saúde prod. anim.

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<p>O objetivo com este trabalho foi avaliar o efeito de grupo genético (GGen) e de ordem de parto (OrdP) de 400 matrizes suínas sobre características produtivas e reprodutivas. Utilizou-se três GGen (GGen1, GGen2 e GGen3) e duas OrdP (OrdP1 e OrdP2). As variáveis dependentes avaliadas foram peso médio da leitegada ao nascimento (PMNasc), peso médio da leitegada ao desmame (PMDesm), tamanho da leitegada ao nascimento (TNasc), tamanho da leitegada ao desmame (TDesm), duração da lactação (DL), número de partos/fêmea/ano (P/F/A), número de leitões desmamados/fêmea/ano (D/F/A), ganho de peso diário do leitão (GPD), ganho de peso diário da leitegada (GPDLeit), intervalo desmame-cio (IDC), média de dias não produtivos (MDNP) e número de serviços por concepção (NSPC). A interação entre GGene OrdPfoi significativa para PMDesm, DL, P/F/A, GPD, IDC e MDNP. Para as demais variáveis (PMNasc, TNasc, TDesm e D/F/A) não ocorreu interação nem efeito de GGen e OrdP. Houve efeito do GGen independente da OrdP nas variáveis GPDLeit e do NSPC. O GGen 3 foi considerado superior, uma vez que este apresentou melhor desempenho em relação aos demais na maioria das características avaliadas. Não foi possível determinar a melhor OrdP, pois esta variou em função dos GGen e das variáveis dependentes.</p>

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Biological potential of fecundity of sows

Abstract: The profitability of pig production considerably depends on the number of born alive and fostered piglets. The development regarding the number of piglets born for German Landrace (DL), Large White (DE) and Pietrain (PI) in Germany during 1980-2006 is limited (

Cited by 6 publications

References 25 publications

Specific LED-based red light photo-stimulation procedures improve overall sperm function and reproductive performance of boar ejaculates

Specific LED-based red light photo-stimulation procedures improve overall sperm function and reproductive performance of boar ejaculates

Estimation of heritability coefficients of number of born alive piglets in the first three farrowings swedish landrace sows

Grupo genético e ordem de parto no desempenho produtivo e reprodutivo de matrizes suínas

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