What is Sprague Dawley rat?

Published by Charlie Davidson on

What is Sprague Dawley rat?

The Sprague Dawley rat is an outbred multipurpose breed of albino rat used extensively in medical and nutritional research. The average litter size of the Sprague Dawley rat is 11.0. These rats typically have a longer tail in proportion to their body length than Wistar rats.

What is the difference between Wistar and Sprague Dawley?

Wistar Rats – Long ears, tail length shorter than body length and wider head. Sprague Dawley Rats – Longer and Narrower head, tail longer than body (may equal to body length).

How much is a Sprague Dawley rat?

Male Order code: 002 – US

Description Price Currency
250-274g weight, 59-63 approx days 65.65 USD
275-299g weight, 64-69 approx days 69.30 USD
300-324g weight, 70-75 approx days 73.35 USD
325-349g weight, 76-85 approx days 80.60 USD

How many pups do Sprague Dawley rats have?

The average litter size of the Sprague Dawley rat is 10.5. The adult body weight is 250–300g for females, and 450–520g for males.

Why is it called Lab Rats?

“Researchers study rats and mice because they are very similar to people genetically,” according to the Foundation for Biomedical Researh (FBR). Another reason they’re used as models in medical testing is that their genetic, biological and behavior characteristics closely resemble those of humans.

Are Sprague Dawley rats inbred?

Abstract. Inbred strains of mice such as C57BL and BALB/c are more widely used in published work than outbred stocks of mice such as ICR and CD-1. In contrast, outbred stocks of rats such as Wistar and Sprague-Dawley are more widely used than inbred strains such as F344 and LEW.

Why do we experiment on rats?

Why do we use rats? The laboratory rat has made invaluable contributions to cardiovascular medicine, neural regeneration, wound healing, diabetes, transplantation, behavioural studies and space motion sickness research. Rats have also been widely used to test drug efficacy and safety.

How old is a 300g rat?

between 57 and 70 days
Thus, a 300 g male Sprague Dawley rat can be between 57 and 70 days of age, depending on the vendor and colony (Charles River SD SAS, 67 days; Harlan SD, 57 days, Harlan CD, 70 days).

What is the smallest litter a rat can have?

One female rat can give birth to anywhere from three to 14 pups. Norway rats tend to have larger litters, maybe because the females can feed 12 at a time. Female roof rats only have the capacity to feed 10 pups, which is possibly why their litters tend to be smaller, at around five to eight babies per litter.

Why do they experiment on rats?

Do Lab rats bite?

Rats naturally carry bacteria in their mouth and can transmit them through bite wounds causing infection. Symptoms of infection after exposure: Inflammation around the bite wound. high prostrating fevers.

What is an example of an inbred rat strain?

Examples of some inbred strains are: ACI, FHH, BN. These are animals in which there is a structural change in the DNA. These are formed by crossing two inbred strains, followed by 20 or more consecutive generations of brother and sister mating.

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