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Showing 1 to 18 of 18 for “"Cross-Fostering"”.
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Impact of cross-fostering on the intestinal microbiome and mucosal immune gene expression in neonatal pigs
Colostrum is vital to the newborn pig. Hence, cross-fostering is employed to equalize the number of piglet between litters ensuring colostrum intake for their survival and growth. However, little is known about the impact of cross-fostering on the intestinal microbiome and mucosal immune gene …
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The Effects of Cross-Fostering on The Behavior of Two Species of North American Lemmings (Dicrostonyx Groenlandicus and Lemmus Trimucronatus)
Made available in DSpace on 2014-12-14T16:11:18Z (GMT). No. of bitstreams: 1 7915366.pdf: 8012984 bytes, checksum: c14f56050de24a9cbf1849e0646166ab (MD5) Previous issue date: 1979
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Methods to reduce rectal temperature decline of newborn piglets and the effect of cross-fostering strategies on piglet pre-weaning growth and mortality
… understanding of the fundamental components of cross-fostering. Five studies were conducted to determine the typical piglet temperature decline in the early postnatal period and evaluate the effect of practical interventions (drying using various methods, warming, drying and warming, or …
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An Analysis of Species Recognition in Sympatric, Allopatric and Reciprocally Cross-fostered PEROMYSCUS CALIFORNICUS and PEROMYSCUS EREMICUS (Rodentia, Cricetidae)
… throughout the experiment.</p> <p>Reciprocal cross-fostering between the two species resulted in significant choice for the heterospecific cross-foster species type by P. eremicus, but the species choice exhibited by cross-fostered P. californicus was not significantly different from random. …
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Maternal care in a highly precocial mammal, the guinea pig (Cavia aperea f. porcellus)
… guinea pig (Cavia aperea f. porcellus) by cross-fostering different aged pups. As cross-fostered younger pups were weaned early and older pups late compared to normal conditions, the results clearly indicate a conflict in which mothers wield the power. In contrast to findings in altricials, …
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Impact of the implementation of the mcrebel management program in a commercial breed-to-wean unit following an infection with porcine reproductive and respiratory syndrome
… 2 treatments: 1) McRebel program (involved no cross-fostering with the implementation of additional biosecurity measures to eliminate cross-contamination); 2) Control (cross-fostering according to standard commercial procedures for PRRS negative farms and no additional biosecurity procedures). …
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FATTY ACID SYNTHASE MODULATES MAMMARY GLAND LACTATION AND PROSTATE CANCER PROGRESSION IN VIVO
… perished prior to weaning, which was rescued by cross-fostering with a wild-type mother. Chapter III demonstrates the requirement of FASN for the pathological progression of prostate cancer. Prostates from Pten knockout mice showed overall decreased total prostate weight, histopathological …
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Constraints on the evolution of attractive traits: Natural selection, sexual selection and quantitative genetics in the zebra finch
… causes of bill color variation in a cross-fostering experiment. This experiment demonstrated that bill color is condition-dependent early in development but when the birds reach adult age (120 days) their bill color is heritable and no longer condition-dependent.
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Identification and evaluation of Limosilactobacillus reuteri as an inducer of neonatal IgA and autoimmunity
… of neonatal IgA can be achieved through cross-fostering immunocompetent pups on immunocompromised dams. We found that this phenomenon was categorically due to transferal of microbes from dam to offspring. By comparing strain CF48-3A to the non-gastric-related organism L. oris, we …
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Nurture is Nature: The Molecular Basis of Caregiver Genotype Effects on Larval Growth and Caste Development in the Clonal Raider Ant
… factors or general rules underlie IGEs across traits and species. The clonal raider ant, <em>Ooceraea biroi</em>, provides a powerful model in which the effects of genetics and environment on social traits can be disentangled. These ants reproduce parthenogenetically and can be maintained …
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The impact of gestation sow housing system (individual vs. group) on the reproductive performance of sows & the effect of farrowing pen size on pre-weaning mortality
… for a greater (P < 0.10) litter size after cross-fostering (0.4 piglets). The Increased pen size had a greater (P < 0.05) number of piglets weaned per litter (0.4 piglets). Ideally litter size would be similar across the 2 treatments to make it relatively easy to interpret any treatment …
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Epigenomic and Transcriptomic Changes in the Onset of Disease
Current sequencing technologies allows researchers unprecedented insight into our biology, and how these biological mechanisms can become distorted and lead to disease. These aberrant mechanisms can be brought about by many causes, but some occur as a result of genetic mutations or external factors …
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The early origins of obesity: the importance of prenatal vs postnatal environment.
… early adolescence and in young adulthood using a cross-fostering approach in a rat model. The results of this thesis demonstrated that exposure to a maternal cafeteria diet during the suckling period is more important for determining fat mass at weaning than exposure before birth. Importantly, …
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The impact of sow gestation housing system (individual vs. group) on the reproductive performance of sows across 6 parities & the effect of farrowing pen size on pre-weaning mortality
… was according to the standard unit protocols. Cross-fostering was carried out within 24 hours of birth to standardize litter size between sows within a replicate. Piglet numbers and weights were recorded at birth and weaning. There were few effects of farrowing pen size on any measures, and …
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Validating a novel ADHD model for medication development
… of the High-Active line. In this large-scale cross-fostering experiment I demonstrate that the significant deficits in the maternal competence of High-Active dams do not influence the hyperactivity of High-Active offspring; raw genetics mediate this transgenerational phenotype whose expression …
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Evaluation of risks associated with close environmental contact to swine that are transgenic for a bovine milk protein alpha-lactalbumin
… the lactating mammary gland and if the Tg DNA crosses into non-transgenic swine under various physiological and physical conditions. The specific aims addressed in this study were to determine (1) whether the Tg can be synthesized in any other tissues than the mammary gland of a transgenic sow; …
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The role of norepinephrine in arousal and attention: a human and rat study
… frontal alpha power was negatively associated across all three attentional tasks. The majority of the associations were found during the Go/No-Go task. Childhood trauma reflected increased recruitment of mental resources as seen by reduced alpha activity, how this is related to the functioning …