Características seminais de caprinos Marota no Nordeste do Brasil.

O tipo racial Marota, nativo do Nordeste do Brasil, tem suas características seminais ainda pouco conhecidas. Seis caprinos Marota, com idade e peso médios de 2,5 anos e 29,7 kg, respectivamente, tiveram seu sêmen coletado duas vezes por semana, durante um mês, através de vagina artificial, em presença de fêmea em cio induzido..

Effect of indole-3-acetic acid (plant auxin) on boar sperm motility and pregnancy and prolificacy rates after freezing and thawing

International audienc

Effect of indole-3-acetic acid (plant auxin) on boar sperm motility and pregnancy and prolificacy rates after freezing and thawing

International audienc

USO DE DILUENTES E TEMPERATURAS ALTERNATIVAS NA CONSERVAÇÃO PROLONGADA DO SÊMEN DO VARRÃO

The use of appropriate extenders is important for the success of an artificial insemination program. The objective of this study was to evaluate the efficiency of alternative extenders for swine semen at different temperatures (17 to 10 °C). The following extenders were used: Beltsville Thawing Solution (BTS), powdered coconut water (ACP-103®), and skimmed milk powder (LPD). The 50 ejaculates were analyzed daily, in natura and after dilution, during the 5-day period of semen preservation (D0 to D4), regarding spermatic vigor and motility. Acrosome integrity and sperm viability were evaluated on D0 and D4. Data were analyzed using Mann-Whitney, Students, Tukey and chi-square tests (p<0.05). The LPD extender at 10 °C presented higher motility and sperm vigor compared to BTS and ACP until D2, and to treatments stored at 17 °C. Acrosome vitality and integrity remained higher (p<0.001) with LPD at 10 °C on D0 and D4. LPD showed to be a good extender for the swine semen at lower temperature (10 °C). Furthermore, it provided better protection to sperm cells, by allowing greater integrity and vitality of the acrosome