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Rozprawy doktorskie na temat „Semen quality”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Carson, Claire Elizabeth. "Risk factors for poor semen quality : a study of men undergoing semen analysis." Thesis, London School of Hygiene and Tropical Medicine (University of London), 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424325.

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Atherton, S. "Semen quality detection using acoustic wave sensors." Thesis, Nottingham Trent University, 2011. http://irep.ntu.ac.uk/id/eprint/233/.

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Artificial insemination (AI) is a widely used part of the modern agricultural industry, with the number of animals inseminated globally being measured in the millions per anum. Crucial to the success of AI is that the sperm sample used is of a high Quality. Two factors which determine the quality of the sample are the number of sperm present and their motility. There are numerous methods used to analyse the quality of a sperm sample, but these are generally laboratory based, expensive and in need of a skilled operator to perform the analysis. It would, therefore be useful to have a simple and

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3

Vilakazi, David Mxolisi. "Factors affecting the quality of semen of AI dairy bulls in South Africa." Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-09022005-150724.

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Poolperm, Pariwat. "Factors Influencing Semen Quality and Fertility in Boars." NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20010831-112730.

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<p><p>POOLPERM, PARIWAT. Factors Influencing Semen Quality and Fertilityin Boars. (Under the direction of Drs.Glen W. Almond and William L. Flowers)<p> The objectives of this researchwere 1) determine the influence of antibiotics on semen quality, 2) determinethe association among insulin-like growth factor I (IGF-I) in seminal plasma,semen quality, and subsequent fertility, and 3) retrospectively study theassociation among semen parameters and sow fertility. In the firststudy, the effects of gentamicin (GM), amikacin (AM), neomycin sulfate(NM), and penicillin-streptomycin (PS) in sem

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5

Gadani, Beatrice <1989&gt. "Methods for improving boar and stallion semen quality." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amsdottorato.unibo.it/8386/1/Gadani_Beatrice_tesi.pdf.

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Handling of semen is a very important tool for a successful artificial insemination in both pig and horse farming. One of the main problems during liquid and frozen semen storage is the loss of fertilizing potential mainly due to a sudden reduction of temperature, an excessive production of reactive oxygen species and alterations in the antioxidant defense systems. Supplementation of sperm preparation with different antioxidants gave interesting and promising results and, during recent years, use of plant antioxidants has been gaining the attention of several research groups. Moreover, an inc

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6

Vilakazi, David Mxolisi. "Factors affecting the quality of semen of A.I. dairy bulls in South Africa." Diss., University of Pretoria, 2003. http://hdl.handle.net/2263/27699.

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The primary objective of this research was to study the effects of breed, age, season, and their interactions on semen morphological characteristics. The study was done on 329 bulls (271 Friesland and 58 Jersey) aged 12, 24, 36,48, 60, 72, 84, 96 and> 96 months. The collection of semen was carried out using the artificial vagina method in all four seasons of the year. Spermatozoa were screened for the percentages normal sperm, percentage and total major defects such as knobbed acrosome, pyriform, abnormal lose head, dag defects, nuclear vacuole, degenerative heads, mid-piece reflexes, percenta

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7

Bryan, Tina Michelle. "Testicular function in normal and poor semen quality stallions." Texas A&M University, 2004. http://hdl.handle.net/1969.1/3253.

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The chromosomal location of endocrine genes was established, and relationships between expression of specific endocrine genes and measures of testis function in normal and poor semen quality stallions was assessed. Consensus primer sequences for glucocorticoid receptor (GR) and luteinizing hormone receptor (LHR) were used to screen the CHORI-241 equine bacterial artificial chromosome (BAC) library. The identity of PCR-positive BAC clones was confirmed by sequencing. Verified BACs were mapped to horse metaphase chromosome spreads by fluorescence in situ hybridization (FISH). The BACs containing

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8

Bani, Hani Saleem A. M. Sc Ph D. "Semen Quality and Chemical Oxidative Stress; Quantification and Remediation." Cleveland State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=csu1313527831.

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9

Waite, Jessica Arlene. "Cushioned centrifugation of stallion semen: factors impacting equine sperm recovery rate and quality." Thesis, Texas A&M University, 2007. http://hdl.handle.net/1969.1/85886.

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Centrifugation of stallion semen is an integral part of the cryopreservation procedure, primarily allowing for the concentration of sperm and removal of seminal plasma. In addition, centrifugation is required for maximizing spermatozoal quality in semen from some stallions subjected to cooled transport, because of the detrimental effects of long-term exposure to high levels of seminal plasma. The centrifugation process, however, has potential deleterious effects, including reduction in sperm quality as well as loss of sperm numbers. Since centrifugation plays such a crucial role in semen proce

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10

Osuagwuh, Uchebuchi I. "Semen quality and the excretion of lumpy skin disease virus in semen following vaccination and experimental challenge of vaccinated bulls." Diss., University of Pretoria, 2006. http://hdl.handle.net/2263/23607.

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The aim of this study was to determine the efficacy of vaccination in preventing LSDV excretion in semen and negative effects on semen quality. Lumpy skin disease (LSD) is caused by a virus in the genus Capripoxvirus of the family Poxviridae. The virus has been reported to be excreted in the semen of experimental infected nonvaccinated bulls. Nevertheless, vaccination has been the most widely used method to reduce and prevent the spread of the disease. This work was done to determine the efficacy of lumpy skin disease vaccination in preventing the excretion of lumpy skin disease virus (LSDV) i

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11

Noonan, Beth Anne Kurginski. "Male Turkey reproduction : modifications of daylength and light intensity to increase semen quantity and quality; a study of semen quality characteristics, reproductive hormones, poult production, and behavior /." The Ohio State University, 1999. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488190109868922.

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12

Khan, Sadia Jihan. "Mitochondrial ND Genes: Relevance of Codon Usage to Semen Quality in Men." Thesis, University of Canterbury. Biological Sciences, 2006. http://hdl.handle.net/10092/1434.

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Studies have discovered higher frequencies of single nucleotide polymorphisms (SNPs) in different mitochondrial genes are associated with subnormozoospermia. However, the frequencies of SNPs in ND1 and ND2 are not unknown. The present research was aimed to determine the frequencies of SNPs in ND1 and ND2 genes of the mitochondrial genome in fertile and subfertile men and whether changes in codon usage was associated with fertility phenotypes. Total genomic DNA from 157 semen samples was extracted using the proteinase K/SDS digestion procedure, followed by phenol/chloroform purification and eth

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13

Marques, Daniele Botelho Diniz. "Genetic parameters and genomic analysis of semen quality and fertility traits in pigs." Universidade Federal de Viçosa, 2017. http://www.locus.ufv.br/handle/123456789/18797.

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Submitted by Marco Antônio de Ramos Chagas (mchagas@ufv.br) on 2018-04-18T16:43:21Z No. of bitstreams: 1 texto completo.pdf: 1119071 bytes, checksum: 3dad9c3c8b4da25dfaf3676d6dcc7e69 (MD5)<br>Made available in DSpace on 2018-04-18T16:43:21Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1119071 bytes, checksum: 3dad9c3c8b4da25dfaf3676d6dcc7e69 (MD5) Previous issue date: 2017-09-04<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>O uso generalizado da inseminação artificial (IA) contribuiu grandemente para o sucesso da indústria de suínos, por meio do auxílio e dissemina

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14

LaRey, Kim Gail. "The effect of dietary vitamin E supplementation on semen quality of A.I. dairy bulls." Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-09022005-144429.

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15

Kousenidis, Kostas. "Semen quality of boars : a study of influential factors and the development and validation of techniques designed to improve the assessment of semen parameters." Thesis, University of Aberdeen, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311148.

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The rationale of this thesis was to examine and extend knowledge of boar semen quality, its evaluation and factors which influence quality; with the objective of improving the effectiveness of pig AI. The literature review led to the conclusion that the development of a semen evaluation technique which describes the overall quality of the sperm, correlates well with most semen quality parameters, and most important, applicable at farm level would be a valuable advance. In addition knowledge is needed of the factors affecting semen quality and in particular better semen dilution techniques. Stu

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16

Ekwall, Hans. "Electron microscopy of cryopreserved boar spermatozoa : with special reference to cryo-scanning electron microscopy and immunocytochemistry /." Uppsala : Dept. of Clinical Sciences, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/2007123.pdf.

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17

Milani, Chiara. "Improvement of quality of canine frozen-thawed semen: in vitro and in vivo assays." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3425464.

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During the last decades, the interest in cryopreservation of dog semen has been continuously increasing as the performing of artificial insemination (AI) has become a common practice in canine breeding. However, field data indicate that canine semen freezing and thawing protocols are not yet well defined in order to obtain acceptable results of pregnancy rate. The cause of the lower pregnancy rates obtained with frozen thawed semen with respect to natural mating is the short life span of thawed canine spermatozoa, due to subtle membrane damages affecting sperm cells during freezing and thawing

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18

MIYAKE, KOJI, SATOSHI KATSUNO, HATSUKI HIBI, and MASANORI YAMAMOTO. "EFFECTS OF VARICOCELECTOMY ON TESTIS VOLUME AND SEMEN PARAMETERS IN ADOLESCENTS: A RANDOMIZED PROSPECTIVE STUDY." Nagoya University School of Medicine, 1995. http://hdl.handle.net/2237/16088.

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19

Brown, Geoffrey James. "The effect of Rift Valley fever virus clone 13 vaccine on semen quality in rams." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/46103.

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Rift Valley fever (RVF) is an arthropod-borne viral disease of significant importance in both livestock and humans. Epidemics occur periodically in domestic ruminants, typically after heavy rains, which encourage rapid multiplication of mosquito vectors. Clinical symptoms in livestock vary from inapparent infection to abortions and peracute deaths. The disease has significant zoonotic potential. People in contact with infected livestock may develop disease that varies from mild flu-like symptoms to severe neurological and haemorrhagic disorders and death. An important way of controlling the

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20

Burga, Dávila Lina Zarella. "“EVALUACIÓN DE LA CALIDAD SEMINAL EN PACIENTES CON PROBLEMAS DE FERTILIDAD DEL CENTRO DE REPRODUCCIÓN HUMANA DE LIMA (NACER)”." Bachelor's thesis, Universidad Ricardo Palma, 2016. http://cybertesis.urp.edu.pe/handle/urp/827.

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La infertilidad en el Perú, actualmente no se encuentra considerada como una enfermedad importante para el ámbito de la salud pública, no obstante, afecta al 15% de la población en edad reproductiva y la demanda de Centros de Reproducción Asistida cada vez aumenta. Se considera que el factor masculino contribuye con el 40% de los casos como factor de infertilidad en la pareja. El análisis clínico del semen aporta al conocimiento de la calidad seminal que pueda presentar, que luego permitirá tratar a los pacientes exitosamente. El objetivo de este estudio fue evaluar la calidad seminal de pacie

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21

JUYENA, Nasrin Sultana. "PROTEIN PROFILES AND BIOCHEMICAL CHARACTERISTICS OF SEMEN: INFLUENCE ON FROZEN-THAWED SPERMATOZOAL QUALITY IN RAMS (OVIES ARIES) AND ALPACAS (VICUGNA PACOS)." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3421662.

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Seminal plasma (SP) is a complex biological fluid and is known to act as a nutritive-protective medium for spermatozoa suspended in it. Some of SP components are very important for sperm metabolism, as well as sperm function, survival and transport in the female reproductive tract. Remarkably little is known about biophysical and biochemical makeup of SP. Specially in camelids, the origin, composition and function of SP remain a mystery. Therefore, a series of experiments was conducted to study the biochemical composition of SP in ram and alpaca, and their possible relations with fresh semen q

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22

Neto, Paulo Fantinato. "Influência da disponibilidade de sombra a pasto sobre as características seminais e tolerância ao calor de touros da raça Brahman (Bos taurus indicus)." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-25042011-104025/.

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No Brasil, assim como em outros países tropicais, a criação de bovinos é feita de maneira extensiva e, portanto é suscetível às intempéries climáticas. Esse tipo de criação pode levar ao estresse térmico, mesmo em animais zebuínos. Sob condições de estresse térmico é possível a ocorrência de degeneração testicular, e por isso, há a procura por animais tolerantes ao calor. Desta maneira, este trabalho objetivou a avaliação da tolerância ao calor de touros da raça Brahman utilizando o teste de tolerância ao calor, e também a análise da qualidade seminal relacionada à disponibilidade de sombra no

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23

DeJarnette, James Melton. "The effects of sperm dose, semen quality, and retrograde sperm blockage on accessory sperm number and embryo quality in the artificially inseminated bovine." Thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/41929.

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Rizkallah, Natalie. "Studies on the Ability of Ram Semen Extenders to Preserve Sperm Quality During Storage at 23 °C." Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/27807.

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Artificial insemination facilitates propagation of elite genetics and thus rapid genetic gain in animal agriculture. A cornerstone of the ease of use of this technology is the successful storage of semen, either in liquid or frozen form, to prolong the fertile lifespan of spermatozoa. This is achieved by reducing the metabolic rate of spermatozoa through controlled reduction of temperature and/or change of the chemical properties of storage diluents. However, the reduction of temperature during semen preservation is damaging to spermatozoa and can reduce their fertility, particularly during fr

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25

Jelena, Apić. "UTICAJ SADRŽAJA PROTEINA U SPERMALNOJ PLAZMI NERASTA NA PARAMETRE RAZREĐENE SPERME I FERTILITET VEŠTAČKI OSEMENjENIH KRMAČA." Phd thesis, Univerzitet u Novom Sadu, Poljoprivredni fakultet u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=95676&source=NDLTD&language=en.

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<p>Ve&scaron;tačko osemenjavanje (VO) je najznačajnija reproduktivna biotehnologija u<br />intenzivnoj proizvodnji svinja. Efikasan izbor visoko fertilnih genetski superiornih<br />nerastova i visok fertilitet ve&scaron;tački osemenjenih krmača, ima veliki ekonomski uticaj na<br />efikasnost praktične primene ove biotehnologije. Međutim, prethodna istraživanja<br />pokazuju da procena klasičnih parametara fertiliteta ejakulata (koncentracija, ukupan<br />broj, pokretljivost i morfologija spermatozoida) nisu dovoljni pokazatelji fertiliteta i<br />reproduktivne performanse nerastova. Sa druge s

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Steckler, Daniela. "Assessment of female and male conception rate and correlation to quality of frozen-thawed semen in the dog." Thesis, University of Pretoria, 2017. http://hdl.handle.net/2263/62569.

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The ability to accurately evaluate the quality and estimate the fertilizing potential of dog semen has increased in importance as a result of the more widespread use of artificial insemination but remains challenging. The actual conception rate (CR) of a particular male of this polytocous species may provide useful information particularly in a competitive setting of a multi-sire mating or insemination. A crucial part in establishing the actual CR of a male is played by the fecundity of the female-which may ovulate from multi-ovular follicles-as well as breeding timing, breeding technique, and

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27

Kavak, Ants. "Evaluation of sperm production, testicular measurements and post-thaw sperm quality in Tori and Estonian breed stallions /." Uppsala : Dept. of Obstetrics and Gynaecology, Swedish Univ. of Agricultural Sciences, 2004. http://epsilon.slu.se/9329559.pdf.

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Delgado, Cáceres Belma Exrlalia. "Evaluación espermática de semen de ovino tratado por la técnica de gradiente de densidad." Bachelor's thesis, Universidad Ricardo Palma, 2013. http://cybertesis.urp.edu.pe/handle/urp/589.

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La finalidad del presente estudio fue evaluar en 2 tiempos la calidad espermática de muestras de semen de ovino tratadas por la técnica de gradiente de densidad con respecto a muestras no tratadas. Se utilizó un total de 102 eyaculados de carnero que presentaron en promedio un volumen de 1.12 ± 0.34 ml, color blanquecino, aspecto cremoso, pH de 6.73 ± 0.25, concentración inicial de 3.54 x 109 ± 5.30 x 108 esp/ml y motilidad masal alrededor del grado 4. Posteriormente, cada eyaculado se dividió en un grupo control y experimental de volúmenes iguales. El semen del grupo control fue diluido con T

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29

Kozink, Daniel Michael. "Enhancing Boar Reproductive Performance for Purposes of Artificial Insemination." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/46182.

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The objectives were to: 1) determine if im treatments of Lutalyse expedited the training of sexually inexperienced boars for semen collection and increased spermatozoal output, and 2) determine the effects of dietary L-carnitine supplementation on boar libido, semen quality, sperm production, and maintenance of sperm motility during liquid storage. Experiment 1 utilized lean-type, terminal-line boars (National Pig Development, Roanoke Rapids, NC) (n = 40; 177.4 Â± 2.4 d of age and 112.8 Â± 2.0 kg body weight) that had not previously experienced natural mating. Boars were individually moved

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Di, Iorio Michele. "Cryopreservation of rabbit semen: effectiveness of different permeable and non-permeable cryoprotectants on post-thaw sperm quality and reproductive performances." Doctoral thesis, Università degli studi del Molise, 2015. http://hdl.handle.net/11695/66428.

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Attualmente, i sistemi di allevamento intensivi per la produzione di carne di coniglio si basano principalmente su programmi di inseminazione artificiale (IA). Pertanto, l’allevamento intensivo del coniglio da carne potrebbe usufruire di molti vantaggi se il seme potesse essere conservato dopo la raccolta e successivamente utilizzato per l’IA senza compromettere la fertilità. Due sono le tecnologie disponibili per la conservazione del seme di coniglio: la refrigerazione (in diluenti liquidi o solidi) e il congelamento. L'uso di seme congelato fornirebbe vantaggi più pratici per l'allevamento

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31

Hallap, Triin. "Assessment of sperm attributes of frozen-thawed AI doses from Swedish and Estonian dairy bull sires : with special reference to pre-selection through swim-up, and the influence of age on potential fertility /." Uppsala : Dept. of Clinical Sciences, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/2005113.pdf.

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32

Guzman, Jorge Marin. "Studies evaluating dietary selenium and vitamin E on semen quality, in vivo oocyte fertilization, spermatozoal ultrastructure and testicular histology of boars /." The Ohio State University, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487681148541821.

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Gueniat, Nicole. "Relations between the sperm chromatin structure assay and conventional semen quality and fertility parameters of Swiss bulls used for artificial insemination /." [S.l : s.n.], 1988. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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Peters, Marianne. "The role of male secondary sexual traits in human mate choice : are they preferred by females and do they signal mate quality ?" University of Western Australia. School of Psychology, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0201.

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[Truncated abstract]Judgements of physical attractiveness are thought to reflect evolved preferences for a high quality mate. The central aim of this thesis was to investigate the hypothesis that female preferences are adaptations for finding good quality mates and that faces and bodies signal honest information about mate quality. To date, most human mate preference studies have examined face or body attractiveness alone, and many have created stimuli using computer graphic techniques. Throughout these studies, I endeavoured to maximise the biological relevance of my studies by incorporating

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35

Spjuth, Linda. "Di(2-ethylhexyl) phthalate and semen quality in boars : effects of pre-pubertal oral exposure on sperm production, viability and function post-puberty /." Uppsala : Dept. of Clinical Sciences, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/2006104.pdf.

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Nadir, Sher. "Effect of high and low dosage of fresh and frozen semen on accessory sperm number, fertility and embryo quality in artificially inseminated cattle." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-10222009-125208/.

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Campos, Juliana Roberta. "EFFECTS ON SEMEN QUALITY AND ON ESTABLISHMENT OF PERSISTENT EQUINE ARTERITIS VIRUS (EAV) INFECTION IN STALLIONS FOLLOWING EXPERIMENTAL CHALLENGE WITH THE KENTUCKY 84 (KY84) STRAIN." UKnowledge, 2012. http://uknowledge.uky.edu/gluck_etds/6.

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Equine arteritis virus (EAV) is the causal agent of equine viral arteritis (EVA), a disease of equids. Following EAV infection, up to 70% of stallions may become carriers and continuously shed the virus in their semen for varying time periods. The long-term carrier stallion has an important role in the transmission and maintenance of EAV in horse populations. Recently, it has been demonstrated a correlation between in vitro susceptibility of CD3+ T lymphocytes to EAV infection and establishment of long-term persistent infection among stallions following natural infections. In this study, we in

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Hoyer, Birte Hanna [Verfasser]. "‘Environmental enrichment’ – Strategies to improve the housing conditions of breeding bulls. Impact on time budget, physical activity, rumination, sexual behavior and semen quality / Birte Hanna Hoyer." Hannover : Bibliothek der Tierärztlichen Hochschule Hannover, 2013. http://d-nb.info/1046714376/34.

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Goularte, Karina Lemos. "Sistema de gestão da qualidade para Centros de Coleta e Processamento de Sêmen bovino: elaboração, implantação e impacto." Universidade Federal de Pelotas, 2014. http://repositorio.ufpel.edu.br/handle/ri/2517.

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Made available in DSpace on 2014-08-20T14:37:55Z (GMT). No. of bitstreams: 1 tese_karina_lemos_goularte.pdf: 3530828 bytes, checksum: ee940571a94dfd9dfaf6d9f911e7e113 (MD5) Previous issue date: 2014-02-17<br>Although more than 12 million doses of bull frozen semen were sold in Brazil in 2012, the production process of the doses sold by the artificial insemination centers registered in the Ministry of Agriculture, Livestock and Supply is not yet standardized. The hypothesis of the present study is that the design and implementation of a hazard analysis and critical control points (HACCP) sy

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40

Canisso, Igor Frederico. "Comportamento sexual, parâmetros seminais e fertilidade do sêmen congelado de jumentos (Equus asinus) da raça Pêga." Universidade Federal de Viçosa, 2008. http://locus.ufv.br/handle/123456789/5587.

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Made available in DSpace on 2015-03-26T13:54:43Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1004471 bytes, checksum: 1dceb46ca18407dce4f04e42ee189e86 (MD5) Previous issue date: 2008-06-13<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>This dissertation is compounded for four trials. Experiment 1: This paper describes field results of some sexual behavior characteristics shown by donkeys when using an estrous mare for semen collection. Six donkeys (J: 1, 2, 3, 4, 5, 6) (Pêga breed), 3.5 16 year old and body weight from 230 to 330 kg. The jacks were conditioned to bre

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Martínez, Paredes Eugenio Melchor. "Rearing programmes for breeding rabbits. Effect of early development and feeding on future reproductive performance of rabbit females and males." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/124969.

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[ES] Cualquier mejora en el conocimiento de la nutrición y el manejo de los futuros conejos reproductores debe considerarse como prioritario en la producción cunícola. Sin embargo, los principales esfuerzos en investigación se han centrado en estos animales durante la fase de reproducción propiamente dicha. La hipótesis inicial de esta tesis fue que alcanzar un desarrollo temprano adecuado durante la gestación, lactancia, engorde y recría, con la ayuda de programas ajustados de alimentación en algunos de estos períodos, mejoraría el rendimiento reproductivo y la vida útil de los futuros conejo

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Hermansson, Alexandra. "Effects on the reproductive system in domestic fowl (Gallus domesticus) after embryonic exposure to estrogenic substances /." Uppsala : Dept. of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200720.pdf.

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ANDRADE, I. B. "Efeito da água magnetizada sobre os parâmetros reprodutivos, zootécnicos e temperatura corporal em (Bos taurus indicus)." Universidade do Oeste Paulista, 2017. http://bdtd.unoeste.br:8080/jspui/handle/jspui/998.

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Submitted by Adriana Martinez (amartinez@unoeste.br) on 2017-06-01T14:42:01Z No. of bitstreams: 1 Isamara.pdf: 1900151 bytes, checksum: bf2306ee5b36c025c99dadb0b3ed1c84 (MD5)<br>Made available in DSpace on 2017-06-01T14:42:01Z (GMT). No. of bitstreams: 1 Isamara.pdf: 1900151 bytes, checksum: bf2306ee5b36c025c99dadb0b3ed1c84 (MD5) Previous issue date: 2017-03-17<br>The objective of this study was to study the influence of magnetized water intake on body weight gain, body morphometry and reproductive system, semen characteristics and body and scrotal area temperatures with digital infrared the

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Oliveira, Bruna Marcele Martins de. "Hemodinâmica uterina avaliada por ultrassom Doppler colorido e taxa de fertilidade de vacas submetidas à IATF com sêmen analisado por sondas fluorescentes." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/10/10131/tde-19072012-110306/.

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Após a inseminação artificial, as fêmeas apresentam reação inflamatória transitória e fisiológica, que pode resultar em alterações na vascularização uterina. A ultrassonografia Doppler colorido é uma técnica não invasiva, que vem sendo utilizada para estudar a hemodinâmica do trato reprodutivo de bovinos. Os objetivos deste trabalho foram verificar a resposta inflamatória uterina por ultrassonografia Doppler colorido e a taxa de fertilidade em bovinos após inseminação artificial (IA) com sêmen avaliado por sondas fluorescentes. Para isso foram delineados dois experimentos. O experimento 1 foi

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CONTI, NIBALI GIANMARCO. "Miglioramento della qualità del seme e controllo dei patogeni fungini associati al seme mediante l’uso di microrganismi." Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2022. http://hdl.handle.net/11380/1276545.

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La componente primaria della filiera agricola è il seme, visto non solo come una fonte per perpetrare il genotipo, ma anche come componente necessaria per la produzione di cibo. Per questo la qualità del seme gioca un ruolo essenziale in agricoltura: germinabilità, vigore e purezza devono essere sempre garantiti. La necessità di garantire maggiore sostenibilità ai sistemi agricoli e rispetto dell’ambiente sta aprendo la strada all’uso di prodotti a base di microorganismi limitando l’uso di fitofarmaci dannosi per l’uomo e l’ambiente. Il lavoro di tesi è stato impostato sul miglioramento della

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Murai, Daisuke. "The Quality of Leather Products as Seen from the User's Viewpoint - 46." Verein für Gerberei-Chemie und -Technik e. V, 2019. https://slub.qucosa.de/id/qucosa%3A34144.

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Content: We are a group company of a major department store in Japan. We are in charge of quality control and customer service of items sold by our stores. We constantly monitor our customers’ concerns, and we have been keeping customer correspondence records since 1996. We hold over 100,000 cases for all items of food, clothing, living and services. The record includes not only customer requests but also test results of each item before sales as well as reproduction test results based on customer requests. We use the database to build our quality standards for everything we sell and for the e

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Combs, Daniel, James L. Goodwin, Stuart F. Quan, Wayne J. Morgan, Safal Shetty, and Sairam Parthasarathy. "Insomnia, Health-Related Quality of Life and Health Outcomes in Children: A Seven Year Longitudinal Cohort." NATURE PUBLISHING GROUP, 2016. http://hdl.handle.net/10150/617206.

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Insomnia is common in children, and is associated with decreased school performance and increased psychopathology. Although adult insomnia is linked to worsened health-related quality of life (HRQOL), there is insufficient data evaluating insomnia and HRQOL in children. We examined the HRQOL and health associations of insomnia in a longitudinal cohort of 194 children (96 girls, age at study start 8.7 +/- 1.6 years, age at data analysis 15.0 +/- 1.8 years) over 7 years. International Classification of Sleep Disorders, second edition (ICSD2) derived insomnia was seen intermittently in 27% of chi

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黃宗平. "Effects of Semen Mixing on Quality of the Extended Boar Semen." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/09364223178636795900.

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碩士<br>國立屏東科技大學<br>動物科學與畜產系所<br>100<br>Heterologous insemination (HI), also known as heterospermic inseminations, is a common practise to inseminate sows with extended semen made of ejaculates from 2 or more boars. HI may increase sows’ conception rates by ‘risk diversification’, especially when boar’s fertility is not certain. Because of this , HI has becomed popular in Taiwan. However, it is still not clear that ejaculate mixing would affect quality of the extended semen during storage. This study was conducted to compare daily change in semen traits for three days among various combination

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Tsai, Tsung-Han, and 蔡宗翰. "Effects of Trolox to Boar Diluent Semen on The Quality of Cryopreserved Semen." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/27105195622419307053.

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碩士<br>國立宜蘭大學<br>生物技術與動物科學系動物科學碩士班<br>102<br>Liquid and frozen methods are usually used to apply in boar semen preservation. The principal semen preservation is liquid method in pig breeding farm. However the number of semen dosages of collected and diluted the boar semen is usually greater than the number of mated sows. It wastes the excellent boar semen. If we could cryopreserve the liquid boar semen, we would increase the application of the excellent boars. The objective of this study was to evaluate the effect of Trolox in diluent boar semen for 2 and 3 days storage on the sperm quality and

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Huang, ruei-chang, and 黃芮昌. "Effects of Cryoprotectant Composition on the Semen Quality of Frozen-Thawed Canine Semen." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/a5hwad.

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碩士<br>國立屏東科技大學<br>動物科學與畜產系所<br>105<br>Cryopreservation process produces significant changes in mammalian spermatozoa with the subsequent decrease in its fertility potential. Different factors are involved in the alteration of sperm during the cryopreservation: the cryoprotectant used and chilling, freezing and thawed processes employed. Therefore, a large number of extenders have been studied in order to preserve the canine semen quality during the cryopreservation. This study was investigated to explore the effect of glycerol (G), low density lipoprotein (LDL) and trehalose concentration on p

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