Estimados colegas y amigos, me dirijo a ustedes con el fin de saber si conocen o tienen información acerca de los efectos del estress en los conejos criados en cautiverios.
Desde ya muchas gracias Atte
Med Vet Guillermo Scalerandi
Stress in rabbits
Causes of stress of rabbits
• Pain and disease
• Unfamiliar surroundings
• Transport
• Rough handling
• Proximity of potential predators: dogs, cats, ferrets, birds of prey and, for wild
rabbits, humans
• A dominant companion and no means of escape
• Inability to exhibit natural behaviour patterns, e.g. to forage, make a nest or
interact socially
• Poor husbandry: insufficient food, water and indigestible fibre, excessively high or
low environmental temperature
Effects of stress in rabbits
Many of the effects of stress are linked to the release of catecholamines or corticosteroids and can be life-threatening:
• Catecholamine release can cause heart failure and death. Stress due to
overcrowding has been used to induce cardiomyopathy in laboratory rabbits
• Stimulation of the sympathetic nervous system inhibits activity of the gastrointestinal tract. Gut motility is reduced, which can have a knock-on effect. Gut stasis, trichobezoar formation (hairballs), enterotoxaemia and mucoid enteropathy can all be linked with stress
• Stress in rabbits causes a marked decrease in urine flow, renal plasma flow and filtration rate. Oliguria can last from 30 to 120 minutes
• Stress can increase gastric acidity and cause gastric ulceration in rabbits
• Stress is immunosuppressive. Rabbits suffering from dental disease have significantly lower lymphocyte counts than healthy rabbits
• Stress affects carbohydrate metabolism. Handling alone can cause an increase in blood glucose to the order of 8.5 mmol/l. Blood glucose levels can be very high (20–25 mmol/l) in association with intestinal obstruction and other stressful diseases
• Stress causes anorexia that, in combination with disruption to normal carbohydrate metabolism, can lead to hepatic lipidosis, liver failure and death ways to minimize stress in rabbits undergoing veterinary treatment
• Use analgesics in any situation where the rabbit may be experiencing pain
• Use quiet, gentle handling and sedate or anaesthetize rabbits for painful or uncomfortable procedures
• Wrap rabbits in a towel for examination or procedures such as blood sampling
• Keep rabbits away from the sight, sound and smell of predators, e.g. barking dogs,
ferrets
• Provide hay as bedding material for rabbits awaiting or recovering from surgery. Hay smells familiar and provides security for timid animals. It is also a source of indigestible fibre and foraging material
• Consider hospitalizing a bonded companion with a sick rabbit
• Minimize stressful procedures or devices, e.g. Elizabethan collars or nasogastric
tubes.
Causes of stress of rabbits
• Pain and disease
• Unfamiliar surroundings
• Transport
• Rough handling
• Proximity of potential predators: dogs, cats, ferrets, birds of prey and, for wild
rabbits, humans
• A dominant companion and no means of escape
• Inability to exhibit natural behaviour patterns, e.g. to forage, make a nest or
interact socially
• Poor husbandry: insufficient food, water and indigestible fibre, excessively high or
low environmental temperature
Effects of stress in rabbits
Many of the effects of stress are linked to the release of catecholamines or corticosteroids and can be life-threatening:
• Catecholamine release can cause heart failure and death. Stress due to
overcrowding has been used to induce cardiomyopathy in laboratory rabbits
• Stimulation of the sympathetic nervous system inhibits activity of the gastrointestinal tract. Gut motility is reduced, which can have a knock-on effect. Gut stasis, trichobezoar formation (hairballs), enterotoxaemia and mucoid enteropathy can all be linked with stress
• Stress in rabbits causes a marked decrease in urine flow, renal plasma flow and filtration rate. Oliguria can last from 30 to 120 minutes
• Stress can increase gastric acidity and cause gastric ulceration in rabbits
• Stress is immunosuppressive. Rabbits suffering from dental disease have significantly lower lymphocyte counts than healthy rabbits
• Stress affects carbohydrate metabolism. Handling alone can cause an increase in blood glucose to the order of 8.5 mmol/l. Blood glucose levels can be very high (20–25 mmol/l) in association with intestinal obstruction and other stressful diseases
• Stress causes anorexia that, in combination with disruption to normal carbohydrate metabolism, can lead to hepatic lipidosis, liver failure and death ways to minimize stress in rabbits undergoing veterinary treatment
• Use analgesics in any situation where the rabbit may be experiencing pain
• Use quiet, gentle handling and sedate or anaesthetize rabbits for painful or uncomfortable procedures
• Wrap rabbits in a towel for examination or procedures such as blood sampling
• Keep rabbits away from the sight, sound and smell of predators, e.g. barking dogs,
ferrets
• Provide hay as bedding material for rabbits awaiting or recovering from surgery. Hay smells familiar and provides security for timid animals. It is also a source of indigestible fibre and foraging material
• Consider hospitalizing a bonded companion with a sick rabbit
• Minimize stressful procedures or devices, e.g. Elizabethan collars or nasogastric
tubes.
Amigo, gracias por la información que me has facilitado, demas esta decirte que si algo mas tenes, sera muy bienvenido.
Atte GUillermo
Atte GUillermo
Parecen muy asustadizos y nerviosos, pero no es tan asì. Se acostumbran muy bien a los ruidos y movimientos, lo que sì los afecta son las situaciones anormales a las que no estàn acostumbrados. El stress màs grave quizà es el calor, no se alimentan y altera su ciclo sexual, con presentaciòn de menos celos. Aumentan mucho las fermentaciones intestinales con consiguientes diarreas, sobre todo alimentàndolos con balanceado exclusivamente. Para disminuir este efecto recomiendo varias tècnicas de manejo, que no se si podràs aplicarlas todas o algunas: alimentar con mucha fibra, lo mejor es alfalfa oreada 1 dìa o seca, sobre todo durante el dìa, dàndole el balanceado a la noche. Los dìas de mucho calor, que ves los conejos muy agitados, sumergilos en agua para mojarlos bien y luego largalos al suelo. Si tenes bebederos automàticos purgà el agua 2 o 3 veces en el dìa, para bajarle un poco la temperatura, ya que en el caño se calienta. Se le puede agregar al agua ac. acetilsalicìlico (aspirina) pero no me acuerdo la dosis, como opciòn es darle una corteza de sauce para que roan y obtengan de ahì la droga. Otro factor stresante es el acinamiento, que se produce en el engorde. En realidad no es tan grave, pero aumenta el tiempo de engorde, bajando la conversiòn alimento/carne y generando peleas entre ellos. Vas a ver lotes desparejos en crecimiento y suseptibilidad a sufrir diarreas amarillas. Tenès que tener en cuenta el aumento de coccidiosis cuando estàn acinados. Otro factor que influye en el èxito del criadero es la calidad del aire, hay muchos criaderos que no se limpian con frecuencia y aumenta el amonìaco en el aire inspirado, aumentando significativamente las patologìas respiratorias (pasteurellas). De eso no se curan màs, teniendo que usar el rifle sanitario con los reproductores. El stress por miedo puede producirse si entra algùn predador nocturno al criadero, como perros, comadrejas, urones. Esto generalmente afecta a las hembras que matan las crias del nido o mutilan los gazapos.
Tenho algo que talvez possa ajudar-lhe!!!
segue em anexo...
Henri.
segue em anexo...
Henri.
resposta celular ao estresse em geral.. o de cima em frangos de corte...
abs,
Henri
abs,
Henri
Amigo, gracias por la información que me brindaste. Atte Guillermo
Hola Guillermo; estás preguntando sobre los efectos del stress en criaderos de conejos?. En una oportunidad fui criador y por lo tanto puedo ayudarte.
Amigo, lo que estoy buscando es el efecto general que produce el estress en estos animales que estan en confinamiento. Ya sea por ruidos, golpes, cambio de personal y todo lo que haga a aumentar el "nerviosismo" de estos animales. ASi que si conoces algo de esto, te lo voy a agradecer. Por otro lado quisiera saber de donde sos y donde tuviste el criadero?
muchas gracias Atte Guillermo
muchas gracias Atte Guillermo