Bulls supplemented with calcium soaps of polyunsaturated fatty acids and semen quality before and after freezing

Authors

  • Mónica Marcela Ramírez Hernández Universidade Federal de Rio Grande do Sul, Faculdade de Medicina Veterinária, Programa de Pós-graduação em Ciências Veterinárias, Porto Alegre, RS
  • Harold Ospina Patino Universidade Federal de Rio Grande do Sul, Faculdade de Agronomia, Programa de Pós-graduação em Zootecnia, Porto Alegre, RS
  • Ricardo Macedo Gregory Universidade Federal de Rio Grande do Sul, Faculdade de Medicina Veterinária, Programa de Pós-graduação em Ciências Veterinárias, Porto Alegre, RS
  • Juan Camilo Angel Universidade Federal de Rio Grande do Sul, Faculdade de Agronomia, Programa de Pós-graduação em Zootecnia, Porto Alegre, RS
  • Diogo del Re Universidade Federal de Rio Grande do Sul, Faculdade de Agronomia, Programa de Pós-graduação em Zootecnia, Porto Alegre, RS
  • Maria Inês Mascarenhas Jobim Universidade Federal de Rio Grande do Sul, Faculdade de Medicina Veterinária, Programa de Pós-graduação em Ciências Veterinárias, Porto Alegre, RS
  • Rodrigo da Costa Mattos Universidade Federal de Rio Grande do Sul, Faculdade de Medicina Veterinária, Programa de Pós-graduação em Ciências Veterinárias, Porto Alegre, RS

DOI:

https://doi.org/10.11606/issn.1678-4456.v49i6p471-479

Keywords:

Bulls, Calcium soaps, Polyunsatured fatty acids, Seminal characteristics, Cassava meal

Abstract

The objective of this experiment was to evaluate semen quality of bulls supplemented with calcium soaps of fatty acids polyunsaturated. Twenty Angus, Brangus, Hereford and Braford bulls were randomly allocated into two groups, each with ten animals. Each group received a diet consisting of forage, commercial ration, mineral supplements and supplement. Two supplements types were evaluated: functional supplement, with fatty acids polyunsaturated (PUFA) incorporation or energy supplement, with cassava meal (Manihot esculenta, Crantz) incorporation. During trial period the semen quality was evaluated using routine test (volume, concentration, mass motility, individual motility, sperm morphology) and complementary test: (hypo-osmotic test, giemsa/tripan-azul coloration and thermotolerance test). The semen of group bulls supplemented with commercial calcium soaps of PUFA (Megalac-E®) showed greater sperm motility (83.3% vs. 75.3%), percentage of sperm with intact acrosome (94.8% vs. 91.8%) and percentage of sperm with intact plasma membrane (98.0% vs. 96.6%) when compared with semen of group bulls supplemented with cassava (P<0.05). The supplement type did not affect semen volume, sperm concentration and testosterone concentration in blood (P>0.05). There were interactions between treatment and collection period for percentage of normal sperm and percentage of spermatozoa with hypo-osmotic positive test (P<0.05). The type of supplement did not affect sperm motility, the hypo-osmotic test and fast thermotolerance test after thawing (P>0.05). PUFA calcium soaps supplementation increased percentage of spermatozoa with plasma membrane integrity (51.5 vs. 42.2%) and spermatozoa intact acrosome (48.0% vs. 39.2%) after thawing.

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Published

2012-12-11

How to Cite

Hernández, M. M. R., Patino, H. O., Gregory, R. M., Angel, J. C., Re, D. del, Jobim, M. I. M., & Mattos, R. da C. (2012). Bulls supplemented with calcium soaps of polyunsaturated fatty acids and semen quality before and after freezing. Brazilian Journal of Veterinary Research and Animal Science, 49(6), 471-479. https://doi.org/10.11606/issn.1678-4456.v49i6p471-479

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