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| Class mice are associated with? |
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| Mice have a ____ litter size. |
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| Random breeding, large quantities of unrelated litters. |
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| breeding of relatives, 20 generations of bother/sister matings = isogenic mouse |
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| the offspring of 2 different inbred strains. |
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| a mouse/mice bred genetically different |
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| (knockout mice) DNA introduced to the developing eggs; genes can be taken away. Ability to alter genetic makeup |
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| molecular cloning to make a new DNA sequence; combining genetic material |
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| Ear notching, ear punching, ear or tail tattooing, microchip, cage cards, or temporary id(fur dye) |
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| T/F: Mice are born naked, blind, and deaf |
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| The weaning age for mice is... |
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| 500/minute for a mouse is... |
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| 140/minute for a mouse is... |
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| The average temperature of a mouse |
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| T/F: The 2 prominent incisors grow continuously and are worn down by friction |
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| A female has __ visible teats. |
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| Which strain is without hair but also immune deficient? |
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| Mice reach puberty at ___ weeks. |
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| Mice have hair at ___ days. |
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| Mice pups eyes open at ___ days. |
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| animals coming into heat and can be bred within 14-28 hours after giving birth, if bred, implantation is delayed until after lactation. (Mice, gerbils, guinea pigs, and rats) |
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| a pregnant mouse that is exposed to the presence of a strange mouse within 4 days of breeding will abort the pregnancy. |
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| the result of large groups of female mice housed together in which the females will go into an-estrus; if male is introduced, cycles will begin again. |
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| To go without an estrus cycle |
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| females housed together in large groups can initiate pseudo-pregnancy in some |
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| ovulation occurs at the time of copulation |
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| many heat cycles; as soon as one ends another begins. |
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| the stage in the estrous cycle when the female is receptive to the male and will allow mating. (In heat) |
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| from one heat cycle to the next, the reproductive cycle in animals |
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| harem colony (one male/several females) |
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| 20 consecutive generations of brother/sister matings genetically HOMOZYGOUS |
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| animals derived from hysterectomy, free from any micro organisms; lacks normal flora as well. |
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| germ-free mice that have been introduced to on or two known non-pathogenic microorganisms, defined flora. |
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| Specific Pathogen Free (SPF) |
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| free from specific pathogenic organisms |
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| maintained under sterile conditions in a barrier unit |
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| animals bred with no special precautions and possess unknown and various microorganisms. |
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| The sex of a rat is determined by: |
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| The genus and species name for the Mongolian Gerbil is: |
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| A condition caused by low humanity is: |
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| The average weight of an adult female hamster is: |
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| Which statement is true about epileptiform seizures? |
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| They do not require treatment |
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| The average weight of an adult male rat is: |
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| Hibernation among hamsters is caused by: |
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| lower ambient temperatures |
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| The average gestation period for the rat is: |
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| The average gestation period for a hamster is: |
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| The animal most likely to get infected cheek pouches is the: |
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| The average life span of the rate is: |
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| A condition in the rat that is characterized by a pronounced head tilt is: |
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| The estrous cycle length in the rat is: |
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| Viral pneumonia in hamsters: |
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| causes flu-like symptoms, lasts 5-7 days, and can be transmitted to humans |
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| the causative agent that can cause arthritis in rats as well as transmit rate bite fever to humans is: |
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| Streptobacillus moniliformis |
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| low ambient humidity levels |
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| the correct genus and species of the hamster is: |
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| A strain of rat that is used commonly in research: |
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| Breeding in hamsters can be difficult because |
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| females often do not like their mates |
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| An animal having a sebaceous gland located on the abdominal mid-line is: |
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| The most common breed of hamster used in research is the: |
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| primarily nocturnal, unable to vomit, and get along well with each other. |
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| The average weight of an adult gerbil is: |
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| A common disease found in hamsters who escape their "home" environment: |
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| The only rodent that diabetes is found in is: |
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| Make good pets, can be housed in pairs or singly, and have a weaning age of 3 weeks |
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| In which of the species below is the average female bigger than the average male? |
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| Which lab animal below is commonly used for neurology studies? |
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| A condition in gerbils that can occur because of their burrowing habits is: |
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| The strain of rat that is called a hooded rat is: |
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| In the gerbil, a degloving injury during housing involves: |
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| Campylobactor jejuni is an bacteria that causes _____ in the hamster: |
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| To attract attention or express agitation,gerbils: |
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| When hamsters are asleep: |
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| do not disturb them, handle with care, and/or let sleeping hamsters lie. |
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Weigh: 85-130g(M) / 95-150g(F)
Body temperature: 98.6-100.4F
Lifespan: 18-24mo Heart-rate: 250-500
Respiratory rate: 35-135 BPM
Estrus: 4d postpartum estrus: no
litter: 5-9 gestation:59-72d |
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Definition
Weigh: 900-1200g(M)/700-900g(F)
Body Temperature:99-103.1F
Lifespan:4-5y Heart-rate:230-380
Respiratory: 42-104 estrus: 15-17d
gestation:59-72d postpartum estrus: yes
litter: 2-5 wean:14-21d |
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Definition
Weigh: 65-100g(M)/55-85g(F)
Body Temperature:98.6-101.3F
Lifespan: 3-5 y Heart-rate:360 Respiratory:70-120 Estrus: 4-6d
gestation:15-16d postpartum estrus: yes
litter: 3-7 wean:20-30d |
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Definition
Weigh:20-40g(M)/25-40g(F)
Body Temperature:97.5-100.4F
Lifespan:1.3-3y Heart-rate:325-780
Respiratory:60-220 estrus: 4-5d
postpartum estrus: yes litter:6-12
wean:21-28d |
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Weigh:300-520g(M)/250-300g(F)
Body Temperature:96.6-99.5F
Lifespan:2.5-3.5y Heart-rate:250-450
Respiratory:70-115 estrus:4-10d
gestation:21-23d litter:6-12 |
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Hair chewing of the vibrisse or head region. Usually the one without hair loss is the "barber" and should be removed from the group.
Females 1.5 more likely. Increases during pregnancy.
Not a dominant behavior. |
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Definition
Syphacia obvelata and Aspicularis tetraptera inhabit the cecum and colon.
Associated with poor hair coat, mucoid enteritis, and anal pruritis, rectal prolapse, and intestinal impaction or intussuspection.
Fecal Examination
Treatment: Ivermectin, piperazine citrate, thiabendadozle, and mebendazole. |
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Polyplax serrata; blood sucking louse that causes skin irritation, anemia, and debilitation.
Treatment; Ivermectin and permethrin and malathion dust |
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Rodentolepis nana, rodentolepis diminuta.
Both can transmit to humans.
Treatments: thiabendadozle or praziquantel |
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Spironucleus muris and giardia muris occur in small intestines and cecum.
Treatments: For giardiasis: metronidazole or oxytetracycline. None for the other. |
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| Very common in mice colonies. |
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Mice, rats, hamsters, gerbils, guinea pigs, dogs, cats, several nonhuman primates, and other animals are susceptible to this disease.
Long, thin, Gram-negative spore-forming bacterium.
Clinical signs: diarrhea, dehydration, and anorexia.
Treatment: tetracycline in drinking water for 4-5 days at high levels.
(StreptococcusBacterial Disease) |
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| Overgrowth of the incisors can occur when the jaw is maloccluded, there are missing teeth, or the diet is too soft. |
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| Small and unenveloped DNA viruses; thus they are resistant to heat, lipid solvents, and acidic environments and can persist in the environment for months to years. |
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is a Gram-positive cocci that commonly infects the skin and mucous membranes of animals.
Found om the skin and in the nasopharynx ans gastrointestinal tract.
Can be caused by bite wounds and is more troublesome with the nude mice.
(Bacterial Disease) |
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Associated with dermatitis, pharyngitis, cervical lymphadenities, bacteremia, and a variety of other disease processes.
Immunodeficient mice are more susceptible to infection.
Systemic antibiotics and improved sanitation may be beneficial in treatment. |
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Naturally infects mice, rats, guinea pigs, hamsters, and probably other rodents.
Infections are asymptomatic, but they may cause dyspnea, listlessness, and a wasting disease in immunodeficient mice. |
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| Albino rat breeds include: |
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| Sprague-Dawley and Wistar |
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| Most common outbred rats used in laboratories: |
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| Sprague-Dawley, Wistar, and Long-Evans |
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| Sialidacryoadenitis Virus and Parker's Rat Coronavirus: |
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Definition
Prototype viruses.
Cause the inflammation of salivary and lacrimal glands.
Related to the mouse hepatitis viruses.
Transmission: direct contact, aerosol, or fomites.
Widespread and highly contagious. |
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| Haemobartonella muris was once common in lab rats but is now found only in wild rats. |
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Secretion of porphyrins from the lacrimal gland.
When excessive it can form red crust around the eye and may run down the nasolacrimal duct to form crust abound the nose.
No treatment. Clean away crust. |
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is a syndrome caused by housed suckling or preweaned rats at low ambient relative humidity.
Usually during winter months. |
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| Dermatophytosis (ringworm: |
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Definition
In rats is usually caused by Trichophyton mentagrophytes.
Infection may cause widespread skin lesions in a colony or may produce asymptomatic carriers.
Systemic mycoses are extremely rare in rats. |
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| if tail is degloved, it needs to be amputated at the level of break and sutured closed. |
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Gerbils these spontaneous episodes.
Last a few seconds to minutes.
Treatment is not generally recommended. |
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