Feasibility of the use of stillborn piglets in the study of myogenesis and development of vital organs

Aline Alves da Silva, Danyel Bueno Dalto, Eduardo Raele Oliveira, Arturo Pardo Lozano, David Fernandes Gavioli, Jamile Maria de Oliveira, Natalia Ceron Romero, Graziela Drociunas Pacheco, Caio Abércio da Silva

Abstract


The objective was to study the feasibility of the use of stillborn piglets in the studies of myogenesis and the development of vital organs. For this, was used litters from genetic Topigs x Danbred of 82 sows between 1st to 7 th order of parturition. In total were monitored 82 parturitions, at the end of the parturitions, all piglets were weighed and identified according to birth order. From this procedure we calculated the average weight of litters with a history of stillbirths. The piglets weighing close to or equal to the average weight of litter, and that similar to the weight of stillborn piglets from the litters, were sacrificed. In total 28 piglets were slaughtered and 30 stillbirths were used. In both classes (stillbirths and live births sacrificed) were collected, the semitendinosus muscle, heart, brain and liver. Data were analyzed using Anova, correlations and regression procedure of SAEG. Results suggested that piglets which born alive have a greater muscular area when compared to stillborn (60. 50 vs. 42.71 ?m). In addition a strong correlation (P < 0. 05; r= 0.63) was found between muscular area and number of muscle fibers. Overall, the results of this study suggest that the stillborn piglets have fewer muscle fibers and can’t replace piglets that born alive in researches about myogenesis and development of vital organs, and sex isn’t an important variable to study for this purpose.


Keywords


Fiber; Litter; Mortality; Muscles; Postnatal.



DOI: http://dx.doi.org/10.5433/1679-0359.2012v33n6Supl2p3353

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional