Although birds are kept for a variety of reasons, many owners raise backyard chickens for personal consumption of meat and eggs. There is some concerns that poultry can be exposed to heavy metals, such as lead, and then pass lead on to people in their eggs or meat. Poultry are most commonly exposed to lead through soil that has been contaminated by lead-based paint flakes that have come off older buildings or even…
Reptile reproduction can be a confusing topic due to the variety of normal reproductive strategies found throughout different reptile species. Nevertheless it important to understand normal reproductive processes to correctly approach some commonly seen problems. The recording of this R.A.C.E.-approved, web-based seminar discusses normal reproductive strategies of reptiles, including important reproductive anatomy and physiology. Three clinically important conditions, pre-ovulatory or follicular stasis, post-ovulatory dystocia, and cloacal prolapse, are also explored in detail.
View a recording of this AAVSB R.A.C.E.-approved web-based seminar presented by Eric Klaphake, DVM, DACZM, DABVP (Avian Practice), DABVP (Reptile & Amphibian), then take the brief post-test to earn 1 hour of continuing education credit. This webinar explores five common reptile clinical presentations in detail: trauma, gastrointestinal foreign body, neurological deficits, respiratory difficulty, and reproductive problems.
Reproductive emergencies are most commonly seen in small psittacine birds like the cockatiel, lovebird and budgerigar parakeet. This article reviews conditions commonly seen on an emergency basis such as dystocia, egg yolk peritonitis, cloacal or oviductal prolapse, and/or chronic egg laying. Pertinent anatomy and physiology as well as case management, including the reproductive history, physical examination, diagnostic imaging, and behavioral modification techniques are also discussed.
Detecting a shelled egg on physical examination is not necessarily a problem—birds lay eggs everyday! However palpation of a shelled egg is an important clinical finding that can be associated with dystocia. The egg is shelled in a distal part of the oviduct called the uterus or shell gland. Therefore a shelled egg would normally be palpable in either the…
The paired ovaries and testes, which range in color from yellow to grayish-pink, are located dorsomedially within the coelom although their exact location is species-specific. The right gonad sits cranial to the left, particularly in snakes. Females possess a right and left oviduct, but no true uterus. The oviduct empties directly into the cloaca through a genital papillae
Common reproductive conditions of the reptile include prolapse of the cloaca, oviduct or copulatory organ, yolk coelomitis, dystocia or egg binding, as well as follicular stasis. This review article on twelve key facts explores clinically relevant anatomy and physiology and appropriate husbandry as well as key points of urgent care and general principles of case management.
Chickens are categorized as pure breeds, hybrids, and bantams. There are more than 500 chicken breeds throughout the world. Common breeds include Brahma, Cochin…
The bird egg, sometimes called a “miracle of packaging”, can be intimidating for the avian veterinarian. This amazing structure comes with a plethora of new vocabulary terms, complex anatomy, and intricate physiology. LafeberVet’s “Understanding the Avian Egg” describes the basics of egg anatomy from the eggshell to the embryo with a brief description of hatch.
Are you confident in your medical approach to pediatric health problems ranging from constricted toes to omphalitis, but hazy on the details of incubation and hatch? Many avian veterinarians deal with aviculturists only sporadically, which can diminish your ability to extract relevant patient history. Use Aviculture Vocabulary & Concepts to quickly review common breeder concepts and terms, so that you are better able to focus on your patient’s medical care.
An egg necropsy is an important part of the diagnostic workup to evaluate the cause of dead-in-shell. First, candle the egg and obtain basic measurements. Next enter the egg through the air cell. Carefully examine the shell membranes, then expose the interior of the egg. Collect culture samples as needed. Proceed using this form to gather standardized data and appropriate measurements.
Chronic egg laying is the production of an excessive number of eggs or repeated clutches (or collections) of eggs. Chronic egg laying often occurs in the absence of a normal…
Reproductive problems are a common problem in many small pet bird species, particularly cockatiels, budgerigars parakeets, lovebirds, finches and canaries. In this client handout donated by Dr. Eric Klaphake, egg laying problems from egg binding and egg yolk peritonitis to chronic egg laying are briefly explained to the companion parrot owner.
Cloacal prolapse is a serious and potentially life-threatening problem. Prolapses can originate from the cloaca, oviduct or intestinal tract. The cloaca normally prolapses during egg laying or oviposition, and normal retraction of the cloaca may be slowed or absent in an obese hen or one with hypocalcemia. Excessive abdominal contractions caused by an abnormal egg, dystocia, cloacal disease, gastrointestinal disease or chronic mastubatory behavior can also promote prolapse.