IAR – L’île aux rats  ☾

Statistics

Breeding statistics

Breeding activity period	2005–2007 (2 years, 2 months)

Declared litters	18 litters, 175 pups
⨽ internal (born in the rattery)	⨽ 15 litters, 136 pups
⨽ external (other contributed litters)	⨽ 3 litters, 39 pups

All rat records	175 rats
⨽ females	⨽ 90 females (51.4 %)
⨽ males	⨽ 85 males (48.6 %)

Litter statistics

Average mother age	252 days (8.3 months)
Average father age	466 days (15.3 months)
Average litter size	9.7 pups per litter
Average sex ratio	0.944 (about 1 female for 1 male)

Lifespan statistics

Bred rats recorded as deceased	136 rats (100 % of recorded bred rats)
⨽ declared with known date	⨽ 37 rats (27.2 %)
⨽ presumed dead	⨽ 99 rats (72.8 %)

Average lifespan of bred rats	24.3 months (♀: 23.9 months – ♂: 24.7 months)
⨽ infant mortality excluded	⨽ 24.3 months (♀: 23.9 months – ♂: 24.7 months)
⨽ accidents excluded	⨽ 24.3 months (♀: 23.9 months – ♂: 24.7 months)

Oldest bred rat	IAR-SGS Newen (deceased at 2 years, 10 months, 1 day)

Death causes statistics

Primary death causes by decreasing frequency

29.73 %	Unknown cause
21.62 %	Old age, natural death (from 24 month old minimum)
18.92 %	Other
16.22 %	Respiratory
5.41 %	Accidents, traumas, poisonings
2.7 %	Neurological (brain, spinal cords, nerves)
2.7 %	Reproductive system
2.7 %	Eye, ear, mouth, face

Secondary death causes by decreasing frequency

29.73 %	Undetermined cause (known date)
21.62 %	*Old age, natural death (from 24 month old minimum)
13.51 %	Undetermined tumor (affected organ unknown)
13.51 %	*Respiratory
5.41 %	Undetermined infection or abscess
2.7 %	Stroke
2.7 %	Domestic accident (crush, door...)
2.7 %	Fights, injuries, serious bites, subsequent hemorrhage (excluding abnormal hemorrhage)
2.7 %	Vaginal prolapse (excluding tumors and postpartum)
2.7 %	Zymbal gland tumor
2.7 %	Bronchitis, pneumonia

Related entries

Last contributed litters

See all

State	Birth date	Dam	Sire	Size	Actions
✓	04/08/2007	PAA-LTR Eleya	IAR Silex	11
✓	06/06/2007	IAR Kama Sutra	SGS-RTP Testicule	6
✓	04/05/2007	ABC Babache	CTR Hélium	11
✓	23/02/2007	IAR-ABC Hirsute	IAR Silex	6
✓	30/10/2006	IAR-ABC Hirsute	CTR Hélium	9
✓	19/09/2006	IAR-ABC Galva	ETR Pintor's Pix	13
✓	01/06/2006	IAR Graphite	ETR Zoom van Ratten-Ri	9
✓	28/05/2006	ABC Karité	ETR Pintor's Pix	14
✓	22/03/2006	IAR Ozyme	ABC Chouchen	11
✓	15/03/2006	IAR Azote	ABC-RLL Pharell	8

Recently modified rats

See all

State	Identifier	Prefix	Name	Pup Name	Birth	Age	Death cause	Sex	Actions
✓	IAR130F	IAR	Tékila †		29/07/2005	27 mo	Undetermined cause	♀
✓	IAR3006F	IAR	Ishtar †		01/06/2006	23 mo	Undetermined cause	♀
✓	IAR6063M	IAR	Kubrick †		30/10/2006	24 mo	Zymbal gland tumor	♂
✓	IAR200F	IAR	Méiose †		12/11/2005	23 mo	Undetermined tumor	♀
✓	IAR10719F	IAR-SGS	Nougatine †		06/06/2007	– ?? –	No information	♀
✓	IAR10718F	IAR-SGS	Nichon †		06/06/2007	– ?? –	No information	♀
✓	IAR10635F	IAR-SGS	Noodle Soup †		06/06/2007	31 mo	Old age, natural death	♀
✓	IAR128F	IAR	Ozyme †		29/07/2005	– ?? –	No information	♀
✓	IAR129F	IAR	Carotène †		29/07/2005	– ?? –	No information	♀
✓	IAR131M	IAR	Spontex †		29/07/2005	24 mo	Undetermined cause	♂