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Reproductive Medicine and Theriogenology Flashcards

7 cards from real AAVSB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. When performing artificial insemination (AI) in cattle using the recto-vaginal technique, semen should be deposited at which anatomical site?

    Answer: Body of the uterus

    In cattle AI, the semen is deposited in the body of the uterus (uterine body) after navigating the cervix, providing the best conception rates.

  2. What is the recommended storage temperature for extended chilled equine semen during transport?

    Answer: 4–5°C

    Extended chilled equine semen should be stored and transported at 4–5°C to slow metabolic activity and maintain sperm viability for up to 24–48 hours.

  3. According to Society for Theriogenology (SFT) breeding soundness evaluation standards, what is the minimum percentage of morphologically normal sperm required for a bull to receive a 'satisfactory' classification?

    Answer: 70%

    SFT standards require at least 70% morphologically normal sperm, along with ≥30% progressive motility and a minimum sperm concentration, for a bull to be classified as a satisfactory potential breeder.

  4. Which synchronization protocol for timed AI in cattle uses two injections of GnRH separated by a PGF2α injection?

    Answer: Ovsynch

    The Ovsynch protocol consists of GnRH on day 0, PGF2α on day 7, a second GnRH on day 9, and timed AI approximately 16–20 hours later, synchronizing ovulation for fixed-time insemination.

  5. In which domestic species is commercial embryo transfer (ET) most widely practiced, with tens of thousands of procedures performed annually?

    Answer: Cattle

    Cattle embryo transfer is the most commercially developed ET program worldwide, driven by the high value of elite genetics and well-established non-surgical transfer protocols.

  6. A breeding soundness evaluation (BSE) in bulls includes assessment of which three major categories?

    Answer: Physical examination, scrotal circumference, and semen quality

    A standard BSE evaluates physical soundness (including musculoskeletal and reproductive tract exam), scrotal circumference (correlating to sperm output), and semen quality (motility and morphology).

  7. Which diagnostic procedure is most appropriate to identify subclinical endometritis in a mare prior to breeding?

    Answer: Uterine cytology and microbiological culture via guarded swab

    Uterine cytology (looking for neutrophils) combined with microbiological culture of a guarded swab sample is the gold standard for diagnosing subclinical endometritis in mares before breeding.