ERT – Elevage des Rats du Tarn  ☾

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Statistics

Breeding statistics

Breeding activity period	2007–2020 (12 years, 9 months)

Declared litters	77 litters, 368 pups
⨽ internal (born in the rattery)	⨽ 70 litters, 340 pups
⨽ external (other contributed litters)	⨽ 7 litters, 28 pups

All rat records	366 rats
⨽ females	⨽ 188 females (51.4 %)
⨽ males	⨽ 178 males (48.6 %)

Litter statistics

Average mother age	239 days (7.8 months)
Average father age	418 days (13.7 months)
Average litter size	4.8 pups per litter
Average sex ratio	0.942 (about 1 female for 1 male)

Lifespan statistics

Bred rats recorded as deceased	337 rats (99.7 % of recorded bred rats)
⨽ declared with known date	⨽ 104 rats (30.9 %)
⨽ presumed dead	⨽ 233 rats (69.1 %)

Average lifespan of bred rats	25.8 months (♀: 26.6 months – ♂: 25.2 months)
⨽ infant mortality excluded	⨽ 25.8 months (♀: 26.6 months – ♂: 25.2 months)
⨽ accidents excluded	⨽ 26.4 months (♀: 27.1 months – ♂: 25.9 months)

Oldest bred rat	ERT Calypso (deceased at 3 years, 9 months, 1 day)

Death causes statistics

Primary death causes by decreasing frequency

35.58 %	Old age, natural death (from 24 month old minimum)
20.19 %	Other
16.35 %	Unknown cause
8.65 %	Respiratory
6.73 %	Accidents, traumas, poisonings
5.77 %	Neurological (brain, spinal cords, nerves)
1.92 %	Reproductive system
1.92 %	Urinary system (kidney, bladder)
1.92 %	Cardiovascular
0.96 %	Digestive

Secondary death causes by decreasing frequency

35.58 %	*Old age, natural death (from 24 month old minimum)
16.35 %	Undetermined cause (known date)
11.54 %	Undetermined tumor (affected organ unknown)
4.81 %	Undetermined infection or abscess
4.81 %	Stroke
4.81 %	*Respiratory
3.85 %	Virus, epidemic outbreak, immune deficiency (SDA, Sendai, Tyzzer...)
3.85 %	Bronchitis, pneumonia
2.88 %	Domestic accident (crush, door...)
2.88 %	Veterinary accident (anesthesia during a minor operation, medical error, etc.)
1.92 %	Complications of gestation or parturition
1.92 %	Heart failure, valvular disease
0.96 %	Liver failure
0.96 %	Fights, injuries, serious bites, subsequent hemorrhage (excluding abnormal hemorrhage)
0.96 %	Renal failure
0.96 %	*Urinary system (kidney, bladder)
0.96 %	*Neurological (brain, spinal cords, nerves)

Related entries

Last contributed litters

See all

State	Birth date	Dam	Sire	Size	Actions
✓	27/02/2020	ERT Massasi	ERT Mowu	2
✓	14/07/2019	ALC Clémentine	ALC Richard	1
✓	09/07/2019	ERT Huana	ERT Bael	1
✓	03/07/2019	IND Pascaline	ERT Wolfgang Amadeus Mozart	1
✓	08/03/2019	ERT H'Nikita	ERT Domenico	1
✓	27/12/2018	ERT Anu Kathan	ERT Azr'il	6
✓	27/12/2018	ALC Vermicelle	ERT Tawaki	9
✓	13/12/2018	ERT Nimba	ERT Adolphe	1
✓	13/12/2018	ERT Gianduia	ERT Adolphe	8
✓	12/10/2018	IND Irina	ERT Skoll	6

Recently modified rats

See all

State	Identifier	Prefix	Name	Pup Name	Birth	Age	Death cause	Sex	Actions
✓	ERT42964F	ERT	Hell †		10/12/2014	– ?? –	No information	♀
✓	ERT9565M	ERT	seven †		29/07/2007	– ?? –	No information	♂
✓	ERT10110F	ERT	bianca †		29/07/2007	21 mo	Undetermined tumor	♀
✓	ERT9568M	ERT	Yohko †		29/07/2007	– ?? –	No information	♂
✓	ERT54291F	ERT	Hubble †		27/02/2020	41 mo	Old age, natural death	♀
✓	ERT57244M	ERT	Ulyss		27/02/2020	52 mo	– alive –	♂
✓	ERT28026F	ERT	Pholiotina †		11/11/2010	26 mo	Undetermined cause	♀
✓	ERT21188M	ERT	Pisterpirkko †		20/09/2010	27 mo	Undetermined cause	♂
✓	ETR51324F	ERT	Sybille †	Nambui	27/05/2018	25 mo	Undetermined tumor	♀
✓	ERT50743M	ERT	Darach †		13/03/2018	– ?? –	No information	♂