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Showing 1 to 20 of 31 for “"Reproductive parameters"”.
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Reproductive Parameters of Nesting <em>Caretta caretta</em> on Georgia's Barrier Islands
… along Georgia's barrier islands. The reproductive status of nesting <em>C. caretta</em>was assessed at Wassaw and Blackbeard Island National Wildlife Refuges, Georgia during the 2000 and 2001 nesting seasons. Plasma testosterone and estradiol levels were observed to decline throughout …
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The Effects of Dietary Fructose and Fat on the Reproductive Parameters of Prepubertal and Pregnant Gilts
… however, recent data suggests that pre-pubertal reproductive tract development may be altered by dietary sugar consumption. Two experiments were conducted to delineate the direct effects of fructose on the maturation of the pre-pubertal reproductive tract and fertility. At three weeks of age, …
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Comprehensive Assessment of Physiological, Biochemical, and Reproductive Parameters of Crossbred Goats in Response to Bee Pollen Supplementation
… which can negatively impact goat health and reproductive efficiency. Identifying and implementing nutritional strategies that could enhance goat productivity and herd health could help mitigate this issue, increase domestic production and reduce reliance on imports. Bee pollen (BP) is known …
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Effects of Habitat Quality on Reproduction in Two Georgia Populations of Gopherus Polyphemus
… examining variation in the habitat structure and reproductive parameters for two populations of Gopherus polyphemus in Southeast GA. Both habitat structure and reproductive parameters for these populations are known from a previous study, thus this study expands upon the previous one and addresses …
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The impact of genetic, environmental and life-style factors on male reproductive function
… significant geographical differences in male reproductive function have been observed. In Finland, the sperm concentration was found to be substantially higher than in Denmark. In parallel, the incidence of testicular cancer (TC) and of congenital malformations of male genital organs is …
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Aspectos reprodutivos de coelhas da raça Lion Head
… objective of this research was to evaluate the reproductive parameters of the Mini Lionhead breed. Data were obtained from Granja Visgueiro located in the region of Aldeia in Camaragibe - PE and from the Sector of Cunicultura of the Federal University of Paraíba - Campus II located in the city …
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DNA Sequence and Haplotype Variation Analyses of Circadian Clock Genes and Their Effects on Phenotypes in the Turkey, Meleagris gallopavo
… However, heritage turkeys showed better reproductive performances compared to CC turkeys. A total of 41 SNPs were identified from the genes that screened. The haplogroups in the turClock gene were significantly associated with body weight (BW) at 309 d of age, feed conversion ratio (FCR) …
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The role of Beta carotene in dairy cattle reproduction and its in vivo effect on corpus luteum function
… had no effect on plasma LH, P, I, or G or the reproductive parameters measured. Days to first heat, days to first breeding, days open, and services per conception averaged 74, 74, 95, 1.7 in BC and 64, 76, 102, and 1.9 in C. In another experiment 20 Holsteins were assigned at calving based on …
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Reproductive Life History of <i>Fundulus jenkensi</i> and Comparative Development of Five Sympatric Fundulid Species
… of this coastal killifish, but a detailed reproductive histology study of <em>F. jenkinsi</em> and a diagnostic key of the early life stages of select members of Fundulidae can provide the foundation needed to accurately identify it and quantify reproductive parameters in this rare species …
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Resveratrol: therapeutic role in metabolic and reproductive function in obese broodmares
… effects of oral resveratrol supplementation on parameters of metabolic health and reproductive cyclicity in obese mares on pasture. Seventeen healthy, mares were matched by age and assigned to obese control (OBC; n=5, mean BCS=7.4±0.3), obese supplemented with 5g/d resveratrol (OBR; n=6, mean …
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Hurricane and human-induced habitat changes on Fire Island and Westhampton Island, New York, and the effects on breeding piping plovers (Charadrius melodus)
… There was no effect of habitat type on reproductive parameters. We suggest vegetation removal may be necessary to maintain early successional habitats for piping plover management.
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Fundulus grandis Response to Exogenous LH Injection.
… Responsiveness was measured through the reproductive parameters of plasma sex steriod levels (estrogen for the female and testosterone for the male animals) as well as gonadalsomatic indexes, GSI. Females were also evaluated on the microscopic and macroscopic appearance of the ovary. …
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Natural Reproductive Cycle of Northern Largemouth Bass in the Upper Midwest, with Applications to Off-season Spawning
… and abundance. In South Dakota, largemouth bass reproductive success and recruitment varies among populations, oftentimes yielding high density, slow-growing panfish populations in small impoundments. To address this concern, in addition to providing angling opportunities, northern largemouth …
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The Reproductive Cycle of Sceloporus undulatus From Alabama Corresponding Plasma Steroid Levels and Comments on Reproductive Variation.
… fence lizards from Alabama were captured and reproductive parameters were measured. In males, the height of the breeding season (spermiogenesis and spermiation) occurred from March to May. Testis mass declined during this time. Spermatozoa were present in the epididymides until July. In June …
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Influence of Nutritional Modifications on Sow, Litter, and Nursery Performance
… arginine supplementation in late gestation on reproductive performance, and 2) the impact of a whole yeast product in gestation, lactation, and weaned pig diets on reproductive, growth, and immune parameters.</p> <p>In the first study 99 sows were provided a control diet, or the control diet …
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Genetic, environmental and life-style effects on androgen receptor function
Androgens regulate male reproductive function and their effects are mediated through the androgen receptor (AR). The AR gene contains a polymorphic CAG repeat, encoding a stretch of glutamines, affecting the transcriptional activity of the AR. Prostate specific antigen (PSA) is a downstream target …
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Population abundance and genetic structure of black bears in coastal North Carolina and Virginia using noninvasive genetic techniques
… is needed to determine population growth rates, reproductive parameters, and survival rates at all 3 refuges, particularly if a hunting season will be established and maintained in these areas. Methods for regularly monitoring bear populations at these refuges also should be incorporated into …
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Male Subfertility and Prostate Cancer Risk: Epidemiological and Genetic Studies
Androgen action plays a pivotal role in male reproductive tract physiology and pathology. The androgen receptor (AR) gene harbors two codon repeat tracts: the CAG and GGN repeats, encoding corresponding amino acid sequences of variable length; the polyglutamine and polyglycine stretches, …
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Effects of feed additives on uterine morphology and selected reproductive attributes
… exhibit decreased milk yield and reproductive performance, as well as increased uterine infection rates during periods of high stress. Chromium supplementation has demonstrated efficacy as a feed additive capable of reducing the detrimental effects of stress. As such, its …
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Life History Parameters and Social Associations of Female Bottlenose Dolphins (Tursiops Truncatus) in North Carolina, USA
… Australia, or Sarasota Bay, FL. A decrease in reproductive intervals can indicate a density-dependent response to an anthropogenic disturbance or a natural change. Association patterns between and among these known females revealed relationships that have persisted for more than a decade. Most …
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