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| Registros recuperados: 126 | |
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| Castelo Branco,M.A.; Castelo Branco,Y.N.T.C.; Moraes Junior,F.J.; Barros,F.N.; Barçante,F.P.S.; Carvalho,G.M.C.; Melo Evangelista,L.S.; Abreu-Silva,A.L.; Sousa Filho,M.A.; Souza,J.A.T.. |
| ABSTRACT Seminal plasma contains serine proteases and serine protease inhibitor, which are involved in mammalian fertilization, and the inhibitors can be applied to prevent cold-induced sperm capacitation. The effects of different concentrations of two serine protease inhibitors were analyzed, Plasminogen activator inhibitor 1 - PAI-1 (70ƞg, 140ƞg and 210 ƞg) and Antipain (10µg, 50µg and 100µg) as supplementation to bovine semen cryopreservation extender. The effects of the inhibitors on the sperm parameters (sperm kinetics - CASA, acrosome integrity, plasma membrane integrity, mitochondrial membrane potential, sperm defects and acrosome reaction rate) were evaluated in the post-thaw semen. Cryopreservation of sperm with Antipain decreased post-thaw... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Curraleiro Pé-Duro; Fertility; Seminal evaluation; Serine protease inhibitors; Sperm cryopreservation. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501114 |
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| Rossi,R.; Gonczarowska,A.T.; Palhares,M.S.; Boeta,A.M.; Resende,Y.F.; Ribeiro,E.A.; Silva Filho,J.M.. |
| Fertility obtained by cross-breeding mares (Equus caballus) with jackasses (Equus asinus) was evaluated. Two extenders, containing skim milk-glucose or egg yolk-glycine were used to study the fertility of mares inseminated with diluted jackass semen (T1 and T2) or diluted and cooled semen at 5°C for 12 hours (T3 and T4). A total of 272 cycles of 208 mares of undefined breeds were evaluated, being uniformly distributed between groups. The cycles were controlled by transrectal palpation and teasing, and mares were inseminated every Tuesday, Thursday and Saturday (three times/week), from the detection of a follicle with 3.0 to 3.5cm diameter in one of the ovaries until ovulation. Pregnancy was detected using transrectal palpation, teasing and ultrasound exams... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertility; Pregnancy loss; Intra and interspecific cross-breeding; Cooled semen. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000100057 |
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| Carvalho,L.E.; Silva Filho,J.M.; Palhares,M.S.; Sales,A.L.R.; Gonczarowska,A.T.; Oliveira,H.N.; Resende,M.C.; Neves,M.G.; Madison,R.J.. |
| ABSTRACT The aim of this study was to evaluate the effect of two different extenders (Skimmed Milk Glucose - SMG or Lactose - Egg Yolk - LEY) on physical characteristics and fertility of fractionated donkey semen cooled at 5°C. For this, four Pêga donkeys were used as semen donors. The sperm rich fraction of the ejaculate was diluted preparing insemination doses containing 400 x 106 motile spermatozoa in a volume of 22 mL, cooled to 5°C and stored up to 48 hours in a container proposed by Palhares (1997). Sperm motility and vigor were assessed in fresh semen, after first semen dilution, before insemination, at 24 and 48 hours after storage. For the fertility evaluation, 44 mares were inseminated with semen stored for a period between 12 and 24 hours. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Donkey; Fractionated collection; Cooled semen; Fertility. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100029 |
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| Cevik,M.; Yilmazer,C.; Kocyigit,A.. |
| ABSTRACT This study was conducted to investigate the effects of melatonin implantation on basic testicular characteristics and reproductive performance of Kivircik and Charollais rams and ewes during the non-breeding season. In this study, 8 Kivircik and 6 Charollais rams were used. Rams were implanted with 54 mg melatonin according to the manufacturer's instructions. At melatonin implantation and at ram introduction the reproductive performance and testicular characteristics were evaluated. Throughout the experimental period, rams were permanently kept outdoors under conditions of natural day length and at ambient temperature. The effects of exogenous melatonin treatments on the reproductive performances of rams and ewes, estrus response, pregnancy rate,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ram; Melatonin; Fertility; Non-breeding season. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200278 |
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| Menegassi,S.R.O; Barcellos,J.O.J; Peripolli,V; Pereira,P.R.R.X; Borges,J.B.S; Lampert,V.N. |
| The variability of scrotal circumference and the effects of age and breed as well as the relationship between testicular weight (TW), scrotal circumference (SC), and live weight (BW) were investigated in bulls. Devon, Polled Hereford, and Red Angus breeds showed higher SC values than the other British, Continental, Synthetic, and Zebu studied breeds. The percentage of culled bulls because of low SC ranged from 7.01 to 24.25%. The increase of SC was proportional to the increase in TW and they were highly correlated (r²= 0.90). The results suggest that SC in young bulls is the best way to predict TW and, therefore, a useful tool for their selection |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertility; Scrotal circumference; Testicular weight. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000100014 |
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| Park,Seul-Ki; Park,Sang-Kyu. |
| Electrolyzed-reduced water (ERW) scavenges reactive oxygen species and is a powerful anti-oxidant. A positive correlation between oxidative stress and aging has been proved in many model organisms. In Caenorhabditis elegans, many long-lived mutants showed reduced fertility as a trade off against longevity phenotype. We aimed to study the effect of ERW on oxidative stress, fertility and lifespan of C. elegans. We also investigated the genetic pathway involved in the effect of ERW on resistance to oxidative stress and lifespan. We compared lifespan and fertility of worms in media prepared with distilled water and ERW. ERW significantly extended lifespan and increased the number of progeny produced. Then the effect of ERW on resistance to oxidative stress and... |
| Tipo: Journal article |
Palavras-chave: Electrolyzed-reduced water; Aging; Daf-16; Fertility; Lifespan. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200005 |
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| Lorini,Lisete Maria; Rebelato,Gisele Sana; Bonatti,Juliano. |
| Lonomia obliqua is an insect that has urticant spines in the larval stage. This species may cause death as a result of haemorrhages caused by a toxin released from the caterpillar's spines onto the skin of the victim. Since 1989 when this species was identified in Rio Grande do Sul, Brazil, many accidents have happened. The aim of this study was to verify the oviposition, fecundity, fertility, viability of eggs and incubation period of the species. Adults were left in a moth's cage to mate and lay eggs. Thirteen couples were observed daily, and the number of eggs and the caterpillars emerged were recorded. The results showed a mean of 2.8 (± 1.3) ovipositions, a mean fecundity of 135.3 (± 54.4) eggs/female, a mean fertility of 111.9 (± 55.4) eggs/female, a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lonomia obliqua; Urticant caterpillar; Public health; Fecundity; Fertility. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000400011 |
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| Shanmugam,Murugesan; Mahapatra,Ramkrishna. |
| Abstract The present study evaluated the effect of cryoprotectants, semen diluents and chicken lines during pellet method of semen cryopreservation. Three different experiments were conducted; Experiment 1 - semen was cryopreserved using dimethylformamide (DMF) at 6% and 9% concentrations in two semen diluents (Lake and Ravie diluent and TES/NaCl diluent), Experiment 2 - semen was cryopreserved using dimethylacetamide (DMA) at 6% and 9% with or without sucrose (100mM), Experiment 3- semen from two chicken lines (PD1 and PD6) was cryopreserved using DMA (6% and 9%). Semen was evaluated pre and post cryopreservation for progressive motility, live and abnormal sperm. Semen pellets were stored in cryovials for at least seven days before examination and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chicken; Diluent; Fertility; Pellet cryopreservation; Semen. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100501 |
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| TEIXEIRA,R. L.; MUSICK,J. A.. |
| The reproductive and feeding biology of the lined seahorse, Hippocampus erectus, was studied in Chesapeake Bay. Seahorses are monogamous, and males incubate the eggs received from females in a closed brood pouch (= marsupium). Females do not play any parental care after mating. Total sex ratio and the operational sex ratio was strongly skewed toward females. Males and females had similar number of eggs/embryos and hydrated oocytes, respectively. The number of eggs/embryos found in the male brood pouch varied from 97 to 1,552 (fish from 80 to 126 mm TL), whereas the number of hydrated oocytes in female varied from 90 to 1,313 (fish from 60 to 123 mm TL). Both, the number of eggs/embryos and hydrated oocytes were better linearly correlated to total weight... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Parental care; Fecundity; Fertility; Amphipods; Estuary. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000100011 |
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| Paumgartten,F.J.R.; De-Carvalho,R.R.; Souza,C.A.M.; Madi,K.; Chahoud,I.. |
| ß-Myrcene (MYR) is a monoterpene found in the oils of a variety of aromatic plants including lemongrass, verbena, hop, bay, and others. MYR and essential oils containing this terpenoid compound are used in cosmetics, household products, and as flavoring food additives. This study was undertaken to investigate the effects of MYR on fertility and general reproductive performance in the rat. MYR (0, 100, 300 and 500 mg/kg) in peanut oil was given by gavage to male Wistar rats (15 per dose group) for 91 days prior to mating and during the mating period, as well as to females (45 per dose group) continuously for 21 days before mating, during mating and pregnancy, and throughout the period of lactation up to postnatal day 21. On day 21 of pregnancy one-third of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: SS-myrcene; Monoterpenes; Essential oils; Reproductive toxicity; Fertility; Embryofetal toxicity; Postnatal development. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000700012 |
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| Mingoti,G.Z.; Pereira,R.N.; Monteiro,C.M.R.. |
| We investigated whether stress interferes with fertility during adulthood. Male Wistar rats (weighing 220 g in the beginning of the experiment) were forced to swim for 3 min in water at 32ºC daily for 15 days. Stress was assessed by the hot-plate test after the last stressing session. To assess fertility, control and stressed males (N = 15 per group) were mated with sexually mature normal females. Males were sacrificed after copulation. Stress caused by forced swimming was demonstrated by a significant increase in the latency of the pain response in the hot-plate test (14.6 ± 1.25 s for control males vs 26.0 ± 1.53 s for stressed males, P = 0.0004). No changes were observed in body weight, testicular weight, seminal vesicle weight, ventral prostate weight... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Forced swimming stress; Male; Fertility; Rat; Spermatogonia. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000500016 |
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| Barros,M.A.V.; Andrade,E.B.; Barros,R.G.N.; Costa,I.K.M.; Costa,I.C.L.; Vitorino,G.F.A.; Andrade,J.J.C.; Paulino-Silva,K.M.; Nogueira,V.O.; de Brito Alves,J.L.; Costa-Silva,J.H.. |
| The aim of this study was to investigate the reproductive, biochemical, and hematological outcomes of pregnant rats exposed to protein restriction. Wistar rat dams were fed a control normal-protein (NP, 17% protein, n=8) or a low-protein (LP, 8% protein, n=14) diet from the 1st to the 20th day of pregnancy. On the 20th day, the clinical signs of toxicity were evaluated. The pregnant rats were then anesthetized and blood samples were collected for biochemical-hematological analyses, and laparotomy was performed to evaluate reproductive parameters. No sign of toxicity, or differences (P>0.05) in body weight gain and biochemical parameters (urea, creatinine, albumin, globulin, and total protein) between NP and LP pregnant dams were observed. Similarly,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Development; Epigenetics; Fertility; Gestation; Intrauterine growth; Nutrition. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000600613 |
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| Campos,K.E.; Volpato,G.T.; Calderon,I.M.P.; Rudge,M.V.C.; Damasceno,D.C.. |
| The aim of the present study was to assess the reproductive parameters of obese Wistar rats and to determine the frequency of their obese adult offspring. Neonatal rats were divided into two groups: F1 generation, induced to obesity by monosodium glutamate (MSG; F1MSG, N = 30), and rats given saline (F1CON, N = 13). At 90 days of age all animals were mated, producing the F2 offspring (F2CON, N = 28; F2MSG, N = 15). Reproductive parameters (fertility, pregnancy, and delivery indexes) were evaluated in F1 rats. F2 newborns were weighed, and the obesity parameter for F1 and F2 generations was determined from months 5 to 7 of life. At month 7, periovarian fat was weighed and no differences were found. Mean newborn weight also did not differ. The F1 and F2MSG... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Obesity; Offspring; Fertility; Wistar rats; Monosodium glutamate; Transgeneration. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000200008 |
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| Registros recuperados: 126 | |
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