Mating success of timed pregnancies in Sprague Dawley rats ...
Sep 1, 2022 · This study compares three different mating techniques in Sprague-Dawley rats, using the pregnancy rate as the main indicator of success. It provides recommendations for …
NATURAL DELIVERY AND LITTER PARAMETERS SPRAGUE DAWLEY [Crl:CD(SD)] RATS (STUDIES WITHOUT CULLING) PERIOD: 2019 THROUGH 2020 MEAN or % MINIMUM NO. …
Rat Litter Size: Pup Count & Healthy Litters - scienceinsider.blog
May 12, 2025 · Formal, Professional Neutral, Authoritative The Sprague Dawley rat, a common model in laboratory research, often serves as a reference point when discussing reproductive …
a: P-value and direction of trend b: Each dose was compared to the control with Shirley’s test when a trend was present [P<.01 from Jonckheere’s trend test] or ...
Age at Puberty and First Litter Size in Early and Late Paired Rats
Mar 1, 1986 · The rate of sexual maturation among female Sprague-Dawley rats was measured in a variety of intraspecific social environments. It was found that females of this strain differ from …
Several parameters on pregnancy and parturition of primiparous Sprague-Dawley rats were examined. Interval between placing withmales and pregnancy averaged 7.4}1.1 days and 75% …
Sprague Dawley® SD® outbred rats - inotiv.com
Litter average: 11.0 Most widely-used outbred rat in animal research Origin: Established in 1925 by Robert Dawley, the original Sprague Dawley rat colony was obtained by Harlan in 1980 …
Influence of litter size on the postnatal growth of rat pups: Is …
Nov 1, 2009 · In this study we examined the influence of rat litter size on the maternal body weight gain during pregnancy and lactation, as well as on pup body weight gain, somatic maturation …
Implantation and pregnancy outcome of Sprague–Dawley rats …
Dec 1, 2016 · The remaining rats were allowed to deliver after which the litter size and birth weight were also measured. Estradiol, progesterone, prostaglandin E 2, nitric oxide metabolites and …
Litter size affects emotionality in adult male rats - ScienceDirect
Nov 23, 2007 · The role of natural variations in pre-weaning litter size in rodent adult emotionality and the importance of maternal care as a possible mediating factor have been frequently …
Mating success of timed pregnancies in Sprague Dawley rats ...
Sep 1, 2022 · This study compares three different mating techniques in Sprague-Dawley rats, using the pregnancy rate as the main indicator of success. It provides recommendations for …
Lifetime breeding studies in fully fed and dietary restricted female ...
Dec 1, 1985 · Abstract The capacity of female CFY Sprague-Dawley rats to bear multiple litters when breeding was commenced at increasing ages was assessed under the following …
Sprague Dawley Rats | Charles River
Sprague Dawley Rats (CD® IGS) Details Known for their calm demeanor, adaptability, and genetic reliability, the Sprague Dawley (SD) rat has become indispensable for advancing our …
Sprague Dawley® - HLI
Reproductive Metrics: Average litter size of 11.0 Widely Used: Recognized as the most widely used outbred rat in animal research Lineage and Origin: The Hsd:Sprague Dawley® SD® rat, …
The objective of this evaluation was to compare litter parameters and the frequency of external, visceral, and skeletal malformations and variations across species in the Sprague-Dawley rat, …
Timed Pregnant Mice & Rats: Key Tools for Developmental Research
Feb 7, 2025 · Embryonic Diapause in Timed Pregnant Mice and Rats Several methods are used to determine gestational age including development, weight, size, and appearance, however …
Theresulting foundation col onwhich y all transfer ofbreed stock from Sprague Dawley Inc. in1950 often production ofCrl:CD"'(SD)IGS BRanimals isbased reflects this referred toasSprague …
The study described a novel, rapidly performed, successful and safe surgical procedure in rats to achieve a reduction in the number of conceptuses. The objectives were to investigate the total …
Lactation Studies. V. Effect of Litter Size and Number of Lactation ...
Effect of Litter Size and Number of Lactation upon Milk Yields in Sprague-Dawley Rats with Observations on Rates of Gains of Young in Litters of Various Sizes1 R.R.Reddy, J.D.Donker
Developmental and reproduction toxicity of piperonyl butoxide …
Oct 1, 2022 · Part 1: Developmental Safety of Piperonyl Butoxide in the CD ® (Sprague Dawley) Rat. Part 2: Developmental Safety of Piperonyl Butoxide in the NZW Rabbit. Part 3: Two …