- How the ACT Blueprint Is Built: Two Axes, Eleven Headings
- All 11 Knowledge Domains and Their Weights
- The Female Reproduction Cluster: Domains 1, 3, and 4
- Male Reproduction and the Breeding Tools: Domains 5, 6, 7, and 8
- The Smaller Domains: 2, 9, 10, and 11
- The Species Axis: Equine, Canine, Bovine and the Rest
- How Domains Appear in the Exam Format
- Sequencing Your Preparation Around the Weights
- What the Blueprint Does Not Tell You
- Frequently Asked Questions
- The ACT blueprint lists eleven knowledge domains whose official weights total exactly 100%.
- Non-pregnant female reproduction (18%), the pregnant and postpartum female (16%), and male reproduction (14%) make up 48% of the blueprint.
- Species weights (Equine 35%, Canine 25%, Bovine 20%) are a separate axis and must never be added to domain weights.
- The exam totals 500 points: 100 multiple-choice, 20 essays, and 45-50 practical image/video questions.
How the ACT Blueprint Is Built: Two Axes, Eleven Headings
The Diplomate, American College of Theriogenologists (DACT) credential is earned through the ACT Certifying Examination, a comparative, multispecies assessment of reproductive medicine. The American College of Theriogenologists publishes its examination specifications on two independent axes: knowledge content (what area of theriogenology a question tests) and species (which animal the question concerns). A single question can sit in one cell of each axis. A question on equine post-breeding endometritis, for example, belongs to the equine species category and to a female clinical-reproduction content heading.
That distinction matters when you plan your preparation. The percentages on each axis each sum to 100%, so they classify the same exam in two different ways. Adding a knowledge percentage to a species percentage produces a meaningless number. If you are new to the credential itself, the overview at What Is DACT? covers the basics before you dig into the blueprint.
All 11 Knowledge Domains and Their Weights
The table below reproduces the eleven knowledge-content headings and their official weights. These are examination blueprint headings, not an allocation of how many hours you should study each one.
| Domain | Heading | Weight |
|---|---|---|
| 1 | Non-pregnant female anatomy, physiology, and clinical reproduction | 18% |
| 2 | Fertilization, embryology, and sexual differentiation | 4% |
| 3 | Pregnancy | 11% |
| 4 | Clinical approach to the pregnant and postpartum female | 16% |
| 5 | Male anatomy, physiology, and clinical reproduction | 14% |
| 6 | Breeding management and population control | 8% |
| 7 | Artificial insemination | 9% |
| 8 | Embryo technologies | 6% |
| 9 | Urogenital surgery | 6% |
| 10 | Neonatology | 5% |
| 11 | Pharmacology | 3% |
Three domains (1, 4, and 5) account for 48% of the blueprint. Add Pregnancy at 11% and the four female-focused and male-focused anchor domains reach 59%. The remaining seven headings share the other 41%. That concentration shapes everything about how an efficient candidate allocates time, and the sections below walk through each cluster.
The Female Reproduction Cluster: Domains 1, 3, and 4
Domains 1, 3, and 4 together carry 45% of the blueprint. Because the exam is comparative and multispecies, you must be able to move between the mare, bitch, queen, cow, doe, ewe, sow, and camelid without confusing their physiology.
Domain 1: Non-pregnant female anatomy, physiology, and clinical reproduction (18%)
The single heaviest heading. It covers normal structure and function of the female tract and the clinical problems that arise before or outside of pregnancy.
- Comparative estrous cycle endocrinology, including the contrasting cycle patterns across species
- Cycle monitoring and the interpretation of findings in the clinical workup
- Infertility and subfertility work-ups in the non-pregnant female
- Anatomic and functional abnormalities of the tract
- Species-specific anatomy relevant to examination and breeding soundness
Domain 3: Pregnancy (11%)
This heading addresses the physiology of gestation itself, as distinct from the clinical management covered in Domain 4.
- Maternal recognition of pregnancy and the endocrine support of gestation
- Placentation differences across species
- Pregnancy diagnosis methods and their timing windows
- Fetal development and the physiology of normal gestation
Domain 4: Clinical approach to the pregnant and postpartum female (16%)
The second-largest heading is clinical in orientation. Expect case-driven questions that ask what you would do, not just what is normal.
- Pregnancy loss, abortion work-ups, and diagnostic reasoning
- Dystocia and the decision points around assisted delivery
- Management of the periparturient and postpartum female
- Postpartum complications and their treatment
The practical lesson: Domains 3 and 4 are easy to blur together, but they test different skills. Domain 3 rewards physiological understanding; Domain 4 rewards clinical judgment. Study them side by side so that each physiological concept is anchored to its clinical consequence. For a broader plan that includes these domains, see the DACT Study Guide 2026.
Male Reproduction and the Breeding Tools: Domains 5, 6, 7, and 8
These four domains total 37% of the blueprint and cover the male, the management of breeding, and the technologies used to achieve pregnancy.
Domain 5: Male anatomy, physiology, and clinical reproduction (14%)
The third-largest heading on its own. It spans normal male function and the clinical evaluation of male fertility.
- Testicular, epididymal, and accessory gland anatomy and function across species
- Spermatogenesis and endocrine control
- Breeding soundness evaluation and semen evaluation
- Clinical disorders of the male tract and their effect on fertility
Domain 6: Breeding management and population control (8%)
This heading connects reproductive physiology to practical herd, kennel, and stable management, and includes the control side of reproduction.
- Timing and management of breeding in different species
- Managing reproductive efficiency at the individual and population level
- Approaches to controlling reproduction and population
Domain 7: Artificial insemination (9%)
A technique-heavy domain where species differences are large. Fresh, cooled, and frozen semen each bring their own constraints.
- Semen collection, processing, and handling
- Insemination technique and timing relative to ovulation
- Factors affecting the fertility of preserved semen
Domain 8: Embryo technologies (6%)
A narrower but specialized domain covering the reproductive technologies that operate at the embryo level.
- Principles behind embryo collection and transfer
- Recipient and donor management concepts
- Related assisted reproductive technologies and their limitations
Key Takeaway
Domains 5, 7, and 8 form a natural chain: evaluate the male, process and deliver the semen, then extend the work to the embryo. Studying them as a sequence helps you handle questions that cross the boundaries between headings.
The Smaller Domains: 2, 9, 10, and 11
Four headings together make up 18% of the blueprint. Do not dismiss them. A candidate who is strong in the large domains but skips these can lose points that are difficult to recover elsewhere, particularly on practical and short-answer items.
Fertilization, embryology, and sexual differentiation (4%)
The smallest heading after Pharmacology's close neighbor, this domain covers the foundational developmental biology of reproduction. It also underpins clinical problems in the other domains, since disorders of sexual development and early embryonic loss both draw on this material. Expect conceptual questions that reward a clean understanding of developmental sequence.
Urogenital surgery (6%)
This heading covers surgical approaches to the reproductive and urinary tracts. Practical image and video questions can fit naturally here, since recognizing a surgical condition or identifying an anatomical landmark is well suited to a visual format. Know indications, basic techniques, and complications across species.
Neonatology (5%)
Neonatal care links closely to Domain 4. The postpartum female and her newborn are often managed together, so it pays to study neonatal assessment and common neonatal problems in the same sitting as periparturient care.
Pharmacology (3%)
Only 3% as a standalone heading, but do not read that as permission to skip drug knowledge. Therapeutics, hormonal protocols, and drug safety considerations show up in the clinical headings, and a question in Domain 1 or 4 may hinge on knowing the right agent, mechanism, or contraindication. Study pharmacology in context rather than as an isolated list.
The Species Axis: Equine, Canine, Bovine and the Rest
The second axis of the blueprint is species. Because the Certifying Examination is comparative and multispecies, candidates are expected to demonstrate knowledge across the full range of species theriogenologists treat. The official species weights are:
| Species category | Weight |
|---|---|
| Equine | 35% |
| Canine | 25% |
| Bovine | 20% |
| Caprine/ovine | 6% |
| General, non-species specific | 6% |
| Feline | 4% |
| Swine | 2% |
| New world camelids | 2% |
The issuer explicitly distinguishes the "General, non-species specific" category from the individual species. Questions in that category test principles that apply across species rather than anything tied to one animal.
Equine, canine, and bovine together represent 80% of the species axis. That means a candidate who comes from a mixed practice background must still build real competence in the species they see less often. A small-animal reproduction specialist, for instance, needs genuine depth in equine and bovine work to score well, and a large-animal clinician needs the same in canine reproduction. Note also that 2024 was the final year in which candidates under the 2019-or-earlier General Information Guide could select a species-specific exam, so the multispecies format is the standard going forward.
How Domains Appear in the Exam Format
The Certifying Examination Committee prepares and administers an electronic, web-based examination. The current exam page describes it as remote and conducted over two days. The knowledge domains are tested through three distinct item types:
- 100 multiple-choice questions, worth 200 points
- 20 essay questions, worth 200 points
- 45-50 practical image/video short-answer questions, worth 100 points
Together these total 500 points. Note how the weighting shifts away from multiple choice: although there are 100 multiple-choice items, they carry the same 200 points as only 20 essays. Essays are therefore a high-value format, and your ability to write a structured, clinically sound answer matters as much as your recall.
Each essay and practical response is scored by two graders against rubrics. A psychometrician supports the independent Angoff Scoring Committee, and the retrieved guide specifies Modified Angoff standard setting. No fixed numeric pass mark has been verified, so be skeptical of any source that quotes one; see DACT Passing Score 2026 for what is and is not established.
Key Takeaway
The practical image and video items favor domains where visual recognition is natural: urogenital surgery, anatomy within Domains 1 and 5, semen evaluation, and neonatal assessment. Build an image-based review habit for these areas rather than relying only on text.
If you want to see how difficulty plays out across these formats, How Hard Is the DACT Exam? breaks it down, and you can pressure-test your recall with questions at the DACT Exam Prep practice test site.
Sequencing Your Preparation Around the Weights
Generic study advice matters less here than the order in which you tackle the blueprint. One approach that respects both the weights and the way the domains depend on one another is to build from physiology outward to clinical application. The timeline below is an illustration, not a prescribed plan; adjust the length to your own timeline and training schedule.
Foundations: Domains 2 and 1
- Start with fertilization, embryology, and sexual differentiation, since it underpins later material
- Move into non-pregnant female anatomy and cycle endocrinology, the heaviest domain
Gestation and parturition: Domains 3, 4, and 10
- Pair pregnancy physiology with the clinical approach to the pregnant and postpartum female
- Fold neonatology in directly after postpartum care
The male and breeding tools: Domains 5, 7, 8, and 6
- Cover male evaluation, then semen handling and insemination, then embryo technologies
- Finish with breeding management and population control
Surgery, drugs, and integration: Domains 9 and 11
- Review urogenital surgery with image-based practice
- Consolidate pharmacology by revisiting drugs encountered in earlier blocks
Across every block, rotate through species rather than finishing one species before starting the next. Because equine, canine, and bovine dominate the species axis, make sure each block includes comparative tables covering at least those three. For deeper planning, see the DACT Study Guide 2026, and for background on the training route itself, DACT Training.
What the Blueprint Does Not Tell You
Responsible use of the domain table requires understanding its limits:
- It is a classification of exam content, not a curriculum. The ACT also provides a separate study guide with a suggested, unweighted preparation curriculum. That document does not establish exhaustive exam coverage or an official domain count and does not replace the verified examination table.
- Access limits apply. The ACT index advertises a 2026 General Information Guide and an ACT Job Task Analysis 2023, but those downloads could not be retrieved for this article. The September 2025 guide, effective September 1, 2025, is the retrieved procedural source, and it does not establish the contents of the 2026 edition. Always confirm against the current ACT documents.
- Your own requirements follow your edition. Each candidate's substantive requirements follow the General Information Guide edition in effect at initial training registration.
- Historical results are not current estimates. The ACT eNews, Fall 2024, reported 13 of 30 candidates passing, and a review of the 2021 examination reported two passes among 35 candidates. These are dated, cohort-specific figures, and the review's historical content allocations should not be substituted for the current blueprint. See DACT Pass Rate 2026 for context on how to read them.
On the administrative side, the examination fee is listed at USD 750, and a separate one-time training-program registration charge is USD 250. The Requirements page announces July 13-14, 2027 as the next examination dates, with current deadlines including April 15 for examination registration. A conflict exists between sources on the credentials deadline (December 1 on the current index versus November 30 in the September 2025 guide), so verify it directly. Full details are in DACT Certification Cost 2026, DACT Exam Dates 2026, and DACT Requirements 2026. When you are ready to test your knowledge against the blueprint, head to the main practice test site.
Frequently Asked Questions
The ACT's published knowledge-content table displays eleven headings, with weights totaling 100%. The accompanying prose mentions 16 knowledge domains, which conflicts with the eleven listed headings. This guide works from the eleven displayed headings and does not infer any missing ones.
Non-pregnant female anatomy, physiology, and clinical reproduction is the largest at 18%. The clinical approach to the pregnant and postpartum female follows at 16%, and male anatomy, physiology, and clinical reproduction is third at 14%.
No. Knowledge-content weights and species weights classify the same exam on two separate axes. Each axis sums to 100% on its own, so combining them produces a meaningless figure. Use each axis independently, then cross them when designing practice questions.
Yes, in context. The standalone heading is small, but drug selection, hormonal protocols, and safety considerations appear within clinical questions across the larger domains. Study pharmacology alongside the clinical conditions rather than as a separate memorization exercise.
Through 100 multiple-choice questions (200 points), 20 essay questions (200 points), and 45-50 practical image/video short-answer questions (100 points), for 500 points in total. Essays and practical responses are each scored by two graders against rubrics. For the broader credential picture, see Is the DACT Certification Worth It?