Dr.Zoo Animal Welfare

Dr.Zoo Animal Welfare �Servicios Veterinarios integrales para animales de Zoológico y fauna silvestre�������

24/11/2024
26/06/2024
26/06/2024

The effects of a gonadotrophin-releasing hormone (GnRH) vaccine on aggression between two zoo-housed male giraffes were investigated in a study in Zoo Biology:
🦒The older more mature giraffe of the two was treated with GnRH vaccine.
🦒Sparring behaviours decreased after each treatment, but significantly only after forth treatment.
🦒Eight months after vaccination to older bull, the unvaccinated bull showed increased aggression and was also put on vaccination schedule.
🦒GnRH vaccination has the potential to reduce aggression and enable group living in giraffe bachelor groups.
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Read paper (open access): https://onlinelibrary.wiley.com/doi/full/10.1002/zoo.21843
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03/06/2024

In a new multi-phase study published in PLOS ONE, both zoo staff and visitors were engaged with to identify which conservation actions should be promoted in a conservation campaign to be developed by the zoo:
👥Phase 1: internal staff attended workshop to brainstorm ideas, with 164 actions identified and ranked.
👥Phase 2: Online surveys administered to zoo visitors, asking to state their interest in the top 20 actions identified in phase 1. Data were analysed using the Transtheoretical Model of Behavior Change, and the list was narrowed down to 10 actions.
👥Phase 3: Second survey administered, with visitors asked to state interest, benefits and barriers of the 10 actions previously identified.
👥Based on the information collected, it was concluded the campaign should focus on habitat restoration and the purchasing of wildlife-friendly products.
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Read paper (open access): https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0298813
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20/05/2024

A systematic review of the effects of zoo-led interventions on visitors' knowledge and beliefs was published in the journal of Conservation Biology:
🧠Zoo-led interventions from 56 studies were identified and described.
🧠Six behaviour change techniques have been used in interventions to date.
🧠Small to medium positive effects on visitors identified - increased knowledge, improved attitudes towards conservation and self-reported willingness to act for biodiversity.
🧠No publication bias detected but effect sizes varied across studies/interventions, with larger effects observed in single-institution studies.
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Read paper (open access): https://conbio.onlinelibrary.wiley.com/doi/10.1111/cobi.14237
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19/05/2024

Let’s talk about positive reinforcement (clicker training) misconceptions:

Almost weekly I run into misconceptions about positive reinforcement training. A lot of these questions or misconceptions are just genuine misinformation/lack of understanding. Especially with horses this kind of training can feel extremely foreign and a lot of information can be biased. So, let’s start with these 6 misconceptions:

“My horse will get fat using food rewards.”

Food rewards are extremely common with every other species during training. Including most zoo animals. From a dietary perspective, one could argue that using food rewards with horses makes more sense than most other animals as horses should be spending 16-18 hours a day eating. Providing food as a primary reinforcer for horses is a lot easier. Some horses will even work low-value reinforcement such as hay, celery, or pellets.

“My horse will get pushy/dangerous if given food rewards.”

This misconception is probably the most common one I run into. And to be fair I’ve seen the aftermath of poor training with food rewards that results in “pushy” horses. "Pushy" is in quotations because these horses have been reinforced and given food at some point or another for being "pushy" or “muggy”. Food is not normally the issue, the training is. Proper positive reinforcement takes the guesswork out of food rewards and limits the withholding of food. In fact, one could argue that traditional training is much more dangerous due to the fact you need to use fear and punishment.

“The horse only works for the food and not for you.”

Horses are not altruistic. They are not selfless, self-sacrificing, or noble. Those are anthropomorphic concepts. There are always motivations behind their behaviours. With positive reinforcement, the motivation is the addition of something the horse finds appetitive to increase a behaviour. With traditional horsemanship, the motivation is the removal of something the horse finds aversive, pressure, to increase a behaviour. In both instances, there is motivation behind the behaviour.

“A clicker needs to be used.”

“Clickers” were introduced in the early 1990s by Karen Pryor and Gary Wilkes when they began to give positive reinforcement seminars to dog owners using box clickers. A clicker is used as a bridge signal. With negative reinforcement the release of pressure is immediate, with positive reinforcement there is usually a delay between the behaviour and the delivery of the reward. This bridge signal “bridges” the gap in time between the behaviour and the reward. Bridge signals gain their power through classical conditioning.

Let’s say you want to reward your horse for picking up their feet. You walk over, ask your horse to pick their foot up, you put the foot down and then deliver the food reward. From the horse’s perspective, you’re rewarding the last behaviour, which was putting the foot down, not picking it up. With a marker, you can mark the moment of picking up the hoof, so the horse is aware of what is being rewarded.

There are many different types of bridge signals ranging from auditory to visual.

“Positive reinforcement is just bribery.”

Bribery occurs before a behaviour happens. Bribery doesn’t typically change a behaviour over time; it just changes it in the moment. Positive reinforcement happens after the behaviour leaves a lasting positive change.

“Clicker training is only used for tricks.”

Clicker training can be used to teach numerous behaviours. For example:

• Picking up feet
• Ground Tying
• Leading
• Collection
• Receiving injections
• Taking medications
• Lining up to be mounted
• Being ridden

Just like traditional horse training, the use of positive reinforcement is a skill. The majority of the time the result of the training looks the same, but what’s different is how the behaviour is trained. For example: with traditional horsemanship to get a horse to move backward you would apply pressure either on the halter, the bridle, the chest, with a whip or even with your body and (hopefully) remove the pressure once the horse moves backward. With positive reinforcement, you could use a target for your horse to follow backwards. While taught differently, the result is still the exact same: the backup!

The more conversations we can have about positive reinforcement and science-based training, the better off our horses will be. For those of us who train with positive reinforcement, the more transparent and nonjudgmental we can be, the better. We should provide clarity and direction to those who have questions, in hopes that more people begin to see positive reinforcement training as an option.

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19/05/2024

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“Horses are ‘too dangerous' to train with food”

But did you know?

🐘African Elephants, the largest land mammal, have been trained to take injections and many other husbandry behaviours.

🐻Bears, who have a bite force of over 1,200 PSI, have been trained to have their teeth cleaned and to give hair and blood samples.

🐯Tigers, with claws 4 inches long, have been trained to back up their tails into their handler to get injections and to accept fly spray on ears.

🦓Zebras, who have been known to kill lions in a single kick, have been trained to voluntarily walk onto a scale, stand still and get weighed.

🦛Hippos, the worlds deadliest mammal, have been trained to have their teeth brushed and blood drawn.

🦧Chimpanzees, who have 5 times the arm strength of a human male, have been taught to get their temperature checked and teeth inspected.

🦒Giraffes, the tallest mammal in the world, have been trained to have their hooves handled and trimmed.

This is just a small sample of the amazing things that have been taught with clicker training / positive reinforcement (R+). No force or fear needed! All these behaviours have been taught with food. If these larger, more dangerous animals, can be trained safely with food, so can your horse! 🐴🦄

Note: Just like all types of training there is a learning curve and methods of ensuring the safety of both the animal and the trainer. Sometimes that requires protected contact but most importantly requires a thorough understanding of the animals needs/body language.

Inspired by Doggie Drawings by Lili Chin(included in comments!)

Los hipopótamos sudan sangre? 🦛🩸😥Los animales suelen tener particularidades que nos hacen recordarlos siempre que escuch...
25/02/2024

Los hipopótamos sudan sangre? 🦛🩸😥

Los animales suelen tener particularidades que nos hacen recordarlos siempre que escuchamos sobre ellos, la altura de las jirafas🦒,las plumas de un pavoreal 🦚, las orejas de los elefantes 🐘 , los ojos de un búho 🦉 , el pico de un tucán, etc.

Pero, existen otras características que por desgracia pueden ser confundidas y desinformar a las personas sobre ello. ℹ️

Los hipopótamos son un claro ejemplo de esto, a pesar de su aspecto pesado, son animales bastante ágiles que pueden alcanzar velocidades en el agua de hasta 8km por hora. 😱🦛💨

Son una especie sumamente territorial, poseen unos dientes imponentes, viven en grandes grupos y tienen una particularidad; PARECE que “sudan”sangre.

En realidad esto se debe a la producción natural de un par de sustancias de color rojizo y anaranjado, llamados ácido hiposudorico y ácido norhiposudorico,(NO SANGRE!), estos compuestos ayudan a la protección contra los rayos del sol, la pérdida de agua en la piel y actúa en contra de los insectos en las sabanas en donde viven. 🌳☀️🦟

Conocías esto sobre los hipopótamos? 🤓🦛

🐘🐘🐘🐘
23/02/2024

🐘🐘🐘🐘

We are monitoring the reproductive cycles of our female Asian elephants by using coloured edible glitter, which helps to identify the dung.

🦩Los flamingos son quizá una de las especies de ave más coloridas que podemos conocer.🌎Existen 6 especies alrededor del ...
22/02/2024

🦩Los flamingos son quizá una de las especies de ave más coloridas que podemos conocer.

🌎Existen 6 especies alrededor del mundo distribuidos en 4 continentes

🦞Su característico color lo obtienen de su alimento, el cual consta de pequeños crustáceos, moluscos y algas presentes en el agua de los lugares en donde habitan.

Los flamingos pueden vivir en climas muy extremos, lagunas con concentraciones de sal muy elevadas y temperaturas alrededor de los 40 grados centígrados . 🥵🌡️

🦩🦩🦩Viven en parvadas que pueden llegar a tener cientos de individuos, lo cual, convierte la vida en grupo en uno de los aspectos más importantes para estas especies, esto es tan trascendental que cuando por algún motivo algún individuo bajo cuidado humano deba de ser hospitalizado o tenga que pasar tiempo separado del grupo, es altamente recomendable la utilización de espejos o de audios con sonidos de parvadas de flamingos, esto con el objetivo de crear un ambiente más seguro y tranquilo para el individuo.🫂

Los animales sienten como nosotros? 🤔A lo largo de los años las respuestas a estas preguntas han estado en el espectro d...
21/02/2024

Los animales sienten como nosotros? 🤔
A lo largo de los años las respuestas a estas preguntas han estado en el espectro del sí, del no y del no se sabe.

🧠Con el desarrollo de la etología, ciencia la cual se dedica al estudio e interpretación de las conductas de los animales, cada vez estamos más cerca de afirmarlo, los animales son capaces de expresar emociones muy parecidas si no es que iguales a las emociones humanas. 🫂

👨🏼‍⚕️Frans de Waals es un Psicólogo, Primatólogo y Etólogo pionero en los estudios de procesos cognitivos dentro del reino animal, sus principales estudios los ha llevado a cabo en Bonobos 🐵, publicando libros en los cuales nos da una perspectiva del humano y su relación estrecha con las emociones del reino animal, viéndolo como parte de un todo y no como el dominante. 🤜🏾🤛🏾

El doctor De Waals fue galardonado por la revista TIME como una de las 100 personas más influyentes del mundo en el 2007. 🏅

21/01/2024

A study in JZBG tested the use of three-dimensional laser measurements to determine body shape of giraffes, okapis and black rhinoceroses:
🦒Cross-sectional area, width, and height in transverse section were determined for all individuals.
🦏Changes in body shape revealed by relative change rates of each variable in relation to measurements..
🦒Three-dimensional laser measurements accurate method to determine body shape, removing issues with inter-observer variability.
🦏May be an appropriate solution for institutions that lack the scales to weigh megafauna.
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Read paper (open access): https://www.mdpi.com/2673-5636/5/1/6
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13/01/2024
13/01/2024

The behavioural responses of nine Mexican military macaws and two red-billed curassows (mixed-species exhibit) to dispersed whole food was investigated in a study in the Journal of Zoo & Aquarium Research:
🫑 Macaws: Increased activity (foraging, walking, feeding) and bill manipulation, decreased resting.
🫑 Curassows: Increased walking, decreased bill manipulation.
🫑 Birds ate the same amount of food in both conditions (chopped vs whole).
🫑 Zookeepers spent less time in food preparation when it was presented whole to the birds.
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Read paper (open access): https://www.jzar.org/jzar/article/view/771
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01/01/2024

Body condition scoring of large carnivores is a vital part of their management in zoological collections. In this Journal of Zoo and Aquarium Research article, the authors assessed the body condition and selected husbandry conditions of ten large carnivore species in 44 European zoos in seven different countries. It is a great perspective on the overall body condition of captive carnivores, especially since they are prone to obesity. Visit the link to read the full article: https://buff.ly/3sl5cpB

20/12/2023

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Puerto Vallarta Y Bahía De Banderas
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