The application of bovine single-chain recombinant follicle stimulating hormone (bscrFSH) for developing new superovulation (SOV) protocols with a reduced number of FSH applications was tested in lactating dairy cows with the aim of reducing animal welfare concerns and lowering labour requirements. Embryo donor cows were randomly divided into two experimental groups (n = 12 each) to undergo two different SOV protocols: a) SOV protocol using four bscrFSH applications (one dose/day, 24 h apart, four consecutive days; total: four decreasing doses), and b) SOV protocol using two bscrFSH applications (one dose/day, 48 h apart, two alternate days; total: two decreasing doses) to determine their potential effects on superovulatory response, circulating hormone levels, and in vivo embryo production. Circulating 17β-estradiol, FSH, LH, and progesterone concentrations were unaffected over time by bscrFSH treatment, irrespective of the SOV protocol used (p > 0.
View Article and Find Full Text PDFInterferons (IFNs) are cytokines involved in the immune response with a synergistic regulatory effect on the immune response. They are therapeutics for various viral and proliferative conditions, with proven safety and efficacy. Their clinical application is challenging due to the molecules' size, degradation, and pharmacokinetics.
View Article and Find Full Text PDFMultivalent live-attenuated or inactivated vaccines are often used to control the bovine viral diarrhea disease (BVD). Still, they retain inherent disadvantages and do not provide the expected protection. This study developed a new vaccine prototype, including the external segment of the E2 viral protein from five different subgenotypes selected after a massive screening.
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