RB. – René Bastiaans  ☾

About

Statistics

Breeding statistics

Breeding activity period	N/A

Declared litters	0 litter, no pup
⨽ internal (born in the rattery)	⨽ 0 litter, no pup
⨽ external (other contributed litters)	⨽ 0 litter, no pup

All rat records	364 rats
⨽ females	⨽ 188 females (51.6 %)
⨽ males	⨽ 176 males (48.4 %)

Litter statistics

Average mother age	N/A
Average father age	N/A
Average litter size	N/A
Average sex ratio	0.936 (about 1 female for 1 male)

Lifespan statistics

Bred rats recorded as deceased	342 rats (94 % of recorded bred rats)
⨽ declared with known date	⨽ 205 rats (59.9 %)
⨽ presumed dead	⨽ 137 rats (40.1 %)

Average lifespan of bred rats	20.8 months (♀: 20.3 months – ♂: 21.3 months)
⨽ infant mortality excluded	⨽ 20.8 months (♀: 20.3 months – ♂: 21.3 months)
⨽ accidents excluded	⨽ 21.5 months (♀: 21.3 months – ♂: 21.6 months)

Oldest bred rat	RB. Amsterdam Explorator (deceased at 3 years, 8 months, 29 days)

Death causes statistics

Primary death causes by decreasing frequency

27.32 %	Old age, natural death (from 24 month old minimum)
20.49 %	Unknown cause
20.49 %	Other
10.73 %	Accidents, traumas, poisonings
8.29 %	Respiratory
5.85 %	Neurological (brain, spinal cords, nerves)
1.95 %	Reproductive system
1.46 %	Skin
1.46 %	Cardiovascular
0.98 %	Eye, ear, mouth, face
0.49 %	Digestive
0.49 %	Urinary system (kidney, bladder)

Secondary death causes by decreasing frequency

27.32 %	*Old age, natural death (from 24 month old minimum)
20.49 %	Undetermined cause (known date)
7.8 %	Undetermined tumor (affected organ unknown)
6.83 %	Undetermined infection or abscess
4.88 %	Domestic accident (crush, door...)
4.39 %	*Respiratory
3.9 %	Stroke
3.9 %	Bronchitis, pneumonia
2.93 %	Fights, injuries, serious bites, subsequent hemorrhage (excluding abnormal hemorrhage)
2.93 %	*Other
1.95 %	Veterinary accident (anesthesia during a minor operation, medical error, etc.)
1.95 %	Virus, epidemic outbreak, immune deficiency (SDA, Sendai, Tyzzer...)
1.46 %	Heart failure, valvular disease
1.46 %	*Neurological (brain, spinal cords, nerves)
0.98 %	Pododermatitis
0.98 %	Complications of gestation or parturition
0.49 %	Intestinal obstruction (excluding megacolon)
0.49 %	Diabetes
0.49 %	Otitis, ear abscess
0.49 %	Uterus infection (metritis, pyometra)
0.49 %	Zymbal gland tumor
0.49 %	Other accident or trauma
0.49 %	Suffocation, choking
0.49 %	Other reproductive system disorder
0.49 %	Other known cause fitting no other category
0.49 %	Kidney tumor
0.49 %	Epilepsy
0.49 %	*Skin

Related entries

Recently modified rats

See all

State	Identifier	Prefix	Name	Pup Name	Birth	Age	Death cause	Sex	Actions
✓	RB.60722M	RB.	Cortex †		01/01/2023	19 mo	Bronchitis, pneumonia	♂
✓	RB.60656M	RB.	Le Bleu  †		01/04/2023	11 mo	Bronchitis, pneumonia	♂
✓	RB.57972M	RB.	Thunder †		01/04/2023	5 mo	Other reproductive system disorder	♂
✓	RB.60610F	RB.	Kiwi		01/06/2024	6 mo	– alive –	♀
✓	RB.60652M	RB.	Minus		02/04/2023	20 mo	– alive –	♂
✓	RB.57969F	RB.	Widow †		25/02/2023	8 mo	Suffocation, choking	♀
✓	RB.60655M	RB.	Batman		30/05/2024	6 mo	– alive –	♂
✓	RB.60654M	RB.	Kipu		15/05/2024	6 mo	– alive –	♂
✓	RB.60617F	RB.	Taylor		15/04/2024	7 mo	– alive –	♀
✓	RB.60618F	RB.	Sia		15/04/2024	7 mo	– alive –	♀