MGR – Les Magist-Rats 

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Statistics

Breeding statistics

Breeding activity period	2021–2024 (2 years, 9 months)

Declared litters	16 litters, 154 pups
⨽ internal (born in the rattery)	⨽ 12 litters, 130 pups
⨽ external (other contributed litters)	⨽ 4 litters, 24 pups

All rat records	146 rats
⨽ females	⨽ 73 females (50 %)
⨽ males	⨽ 73 males (50 %)

Litter statistics

Average mother age	245 days (8 months)
Average father age	460 days (15.1 months)
Average litter size	9.6 pups per litter
Average sex ratio	Balanced (1 male for 1 female)

Lifespan statistics

Bred rats recorded as deceased	42 rats (34.4 % of recorded bred rats)
⨽ declared with known date	⨽ 41 rats (97.6 %)
⨽ presumed dead	⨽ 1 rat (2.4 %)

Average lifespan of bred rats	15.1 months (♀: 16.3 months – ♂: 13.8 months)
⨽ infant mortality excluded	⨽ 16.7 months (♀: 17.9 months – ♂: 15.3 months)
⨽ accidents excluded	⨽ 19 months (♀: 19.7 months – ♂: 18.2 months)

Oldest bred rat	MGR-MIL Fobia (deceased at 2 years, 7 months, 12 days)

Death causes statistics

Primary death causes by decreasing frequency

48.78 %	Respiratory
12.2 %	Accidents, traumas, poisonings
9.76 %	Infant mortality (up to 6 week old)
9.76 %	Neurological (brain, spinal cords, nerves)
7.32 %	Unknown cause
4.88 %	Reproductive system
2.44 %	Skin
2.44 %	Digestive
2.44 %	Old age, natural death (from 24 month old minimum)
2.44 %	Other

Secondary death causes by decreasing frequency

24.39 %	*Respiratory
17.07 %	Bronchitis, pneumonia
9.76 %	Fights, injuries, serious bites, subsequent hemorrhage (excluding abnormal hemorrhage)
4.88 %	Pituitary tumor
4.88 %	Mammary tumor
4.88 %	Undetermined cause (known date)
4.88 %	*Infant mortality (up to 6 week old)
2.44 %	Other infant mortality cause
2.44 %	Sepsis
2.44 %	Subcutaneous abscess
2.44 %	Pulmonary edema
2.44 %	Digestive tumor (stomach, liver, pancreas, intestines...)
2.44 %	Stillborn
2.44 %	Stroke
2.44 %	Lung tumor
2.44 %	Brain tumor
2.44 %	Other respiratory trouble
2.44 %	Falls, fractures, head or spinal cord trauma (excluding fights)
2.44 %	*Old age, natural death (from 24 month old minimum)
2.44 %	*Unknown cause

Related entries

Last contributed litters

See all

State	Birth date	Dam	Sire	Size	Actions
✓	19/08/2024	MGR-MIL Daffy	MIL Fievel	11
✓	22/01/2024	MIL Mavis	MIL-MGR T'choupi	10
✓	21/01/2024	MGR-MIL Beth	PLS Kenny	13
✓	31/12/2023	VIC Cosma	PLS Dunkan	12
✓	25/11/2023	MGR-MIL Frou-Frou	MIL Orion	8
✓	23/11/2023	RB. Daphné	VIC-MIL Socrate	10
✓	06/07/2023	MIL Vaneloppe	MGR-MIL Razmotte	16
✓	08/04/2023	VIC Ondine	MGR-MIL Enigma	14
✓	06/03/2023	MGR Joy	MIL-MGR Polochon	14
✓	08/10/2022	MGR-MIL Astrid	MIL Alone	6

Recently modified rats

See all

State	Identifier	Prefix	Name	Pup Name	Birth	Age	Death cause	Sex	Actions
✓	MGR60562M	MGR	Jacquimo	Blaarkop	19/08/2024	4 mo	– alive –	♂
✓	MGR57915F	MGR	Anis †		06/03/2023	20 mo	Respiratory	♀
✓	MGR60667F	MGR	Cloé	Holstein	19/08/2024	4 mo	– alive –	♀
✓	MGR59061F	MGR-MIL	Fobia  †	Onega	04/03/2022	31 mo	Lung tumor	♀
✓	MGR60292M	MGR-MIL	Lourdeau		31/12/2023	12 mo	– alive –	♂
✓	MGR59975M	MGR-MIL	Narvalo		31/12/2023	12 mo	– alive –	♂
✓	MGR57924F	MGR	Muscade †		06/03/2023	16 mo	Respiratory	♀
✓	MGR60657M	MGR-MIL	Alphonse †	Kipawa	04/03/2022	17 mo	Respiratory	♂
✓	MGR57918M	MGR	Milky †	Curcuma	06/03/2023	14 mo	Respiratory	♂
✓	MGR59126F	MGR-MIL	Tana †	Tana	04/03/2022	18 mo	Respiratory	♀