To Charles River in 1996. . Sprague Dawley® SD® outbred rats - Envigo All dose levels elicited irritation that was more severe in males than females and resulted in decreased weight gain ( Dougherty, 1988 ). Age (weeks) Growth … Transferred to Harlan Sprague-Dawley, Inc. in 1993 (nomenclature HsdHan ®:WIST). Intra-peritoneal injection of low doses (≤13.3 mg/Kg body weight) of aqueous extract Received: September 1, 2009 of Alligator pepper (Aframomum melegueta) Accepted: December 18, 2009 causes reduction in gestational weight gain in female Sprague dawley rats. rat Strain: Sprague-Dawley Sex: male Details on test animals or test system and environmental conditions: Source: Charles River (UK) Ltd, Margate, Kent, UK Age/weight at study initiation: Test animals were at least 200 g and were approximately 8 weeks old. Sprague Dawley Rats | charneleyoung sprague dawley rat weight age chart - lbemc.com Male Sprague-Dawley Rats. : Structural Characterization of the Kidney Following Lactational Lead Intoxication in Sprague Dawley Rats Figure 3. Sprague Dawley Rat Weight Age Chart - gfecc.org rotator cuff tendons using botulinum toxin The tiny Sprague Dawley pups are born naked, blind, and entirely dependent on their mother for survival. However, the first couple weeks of a rat’s life are full of changes. The pup’s eyes begin to open around 2 weeks and they begin to eat an adult rat’s diet at around 3 weeks of age. sprague-dawley-rat.pdf - Sprague \\u00ae Dawley Rat PREFERRED …