Citations with the tag: INFERTILITY in animals

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  • Sexually dimorphic sterility phenotypes in Hoxa10-deficient mice.
    Satokata, Ichiro; Benson, Gall // Nature; 3/30/1995, Vol. 374 Issue 6521, p460 

    Examines infertility phenotypes in Hoxa10-deficient mice. Reproductive frequencies in Hoxa10-deficient mice; Bilateral cryptorchidism in Hoxa10-deficient males; Role of the gubernaculum in testicular descent.

  • Feline Infertility.
    Williams, John S. // Cats Magazine; Aug2000, Vol. 56 Issue 8, p20 

    Discusses infertility in cats, its causes and possible treatments.

  • The dominance theory of Haldane's rule.
    Turelli, Michael; Orr, H. Allen // Genetics; May95, Vol. 140 Issue 1, p389 

    Discusses the dominance theory of Haldane's rule, on the sterility of species hybrids. Alleles that decrease hybrid fitness; X-linked alleles causing postzygotic isolation; Disproportionate effect of the X chromosome on hybrid sterility; Explanations for the absence of cases of Haldane's rule...

  • Sterile screw worms fly in to save Africa's livestock.
    Turelli, Michael; Orr, H. Allen // New Scientist; 12/8/90, Vol. 128 Issue 1746, p17 

    Reports that the first planeload of sterile male screw worm flies is scheduled to arrive in Libya in December 1990. Goal of wiping out the infestation of New World screw worms that threatens African livestock; Factors that will contribute to the effectiveness of the program; History of the...

  • The first South African International Symposium on Developmental, Cell & Molecular Biology.
    Turelli, Michael; Orr, H. Allen // South African Journal of Science; Nov/Dec96, Vol. 92 Issue 11/12, p570 

    Presents the abstract of the paper `Oleanolic acid causes sterility in male Wistar rats,' by Christopher Mdhuli and Gerhard van der Horst, presented during the first South African International Symposium in Developmental, Cell and Molecular Biology held January 1996 in Johannesburg, South Africa.

  • Sterile release.
    Turelli, Michael; Orr, H. Allen // New Scientist; 8/11/90, Vol. 127 Issue 1729, p23 

    Reports that the United Nations Food and Agriculture Organization has started releasing sterile male screw worm flies to wipe the New World pest out in Africa. Origin of the sterile flies.

  • PRRS blamed for infertility.
    Buss, Jessica // Farmers Weekly; 11/1/2002, Vol. 137 Issue 18, p32 

    Talks about the explosion in sow infertility among pig units in Great Britain as of 2002. Speculation on the involvement of the strain of porcine reproductive respiratory syndrome to the infertility; Observations on the affected sows.

  • The contraceptive plague.
    O'Neill, Graeme // New Scientist; 8/10/2002, Vol. 175 Issue 2355, p4 

    Focuses on the genetically modified viruses in Australia. Move of geneticists to engineer the myxoma virus in rabbits; Contribution of the viruses in making female animals infertile; Consistence of an engineered herpes virus and murine cytomegalovirus in producing 100 percent sterilization of...

  • The Fertility of Hebephiles and the Adaptationist Argument Against Including Hebephilia in DSM-5.
    Blanchard, Ray // Archives of Sexual Behavior; Aug2010, Vol. 39 Issue 4, p817 

    A letter to the editor is presented related to fertility of hebephiles.

  • Cum mula peperit.
    Chandley, Ann C.; Clarke, Cyril A. // Journal of the Royal Society of Medicine; Oct1985, Vol. 78 Issue 10, p800 

    The article comments on the infertility of mules. According to the author, these hybrid animals are officially sterile and evidence to prove the contrary is often impossible to obtain. The question may be asked as to the importance of reporting a fertile mule in a medical journal. The answer is...

  • Action now can beat seasonal sow infertility.
    Balsom, Aly; Trickett, Sarah // Farmers Weekly; 11/6/2009, Vol. 151 Issue 19, p33 

    The article calls for good management in the summer and autumn in order to help minimize seasonal sow infertility problems, according to pig technologist Mark Hawe.

  • Missed opportunities.
    Coile, D. Caroline // Dog World; Jul2003, Vol. 88 Issue 7, p22 

    Focuses on the major causes of infertility in bitches. Failure to cycle in genetically or developmentally normal bitches; Abnormal short intervals between estrus; Causes of low sperm number.

  • Trich can creep up quietly.
    THOMAS, HEATHER SMITH // Western Farmer-Stockman; Oct2013, Vol. 134 Issue 10, p35 

    The article discusses the venereal disease of cattle called trichomoniasis wherein it can cause infertility and occasional abortions in cows due to the small mortiles protozoan found in the reproductive tract of the bull and cow which transmitted through the use of untested and unsafe bulls in...

  • Are volunteers delivering semen samples in fertility studies a biased population?
    F. Eustache; J. Auger; D. Cabrol; P. Jouannet // Human Reproduction; Dec2004, Vol. 19 Issue 12, p2831 

    BACKGROUND: It is not known to what extent the results of epidemiological studies on male fertility and semen quality based on voluntary participation in the general population are relevant. METHODS: In a study on the reproductive health of male partners of pregnant women, information was...

  • Cytoplasmic droplets: the good, the bad or just confusing?
    T.G. Cooper // Human Reproduction; Jan2005, Vol. 20 Issue 1, p9 

    The term cytoplasmic droplets is used to mean two different structures by basic scientists and clinicians. The literature on the presence, position and loss of cytoplasmic droplets and their relationship to infertility in animal species is reviewed. It is proposed that a change in terminology is...

  • Leptin deficiency could cause fertility problems.
    Allison, Richard; Buss, Jessica // Farmers Weekly; 4/19/2002, Vol. 136 Issue 16, p46 

    Reports that insufficient leptin could be responsible for low progesterone levels and associated fertility problem in dairy cows, according to researcher, George Mann. Blood leptin concentrations of cows with abnormal progesterone cycles; Factors behind low progesterone.

  • Ovum pick up gains backing.
    Buss, Jessica // Farmers Weekly; 9/13/2002, Vol. 137 Issue 11, p40 

    Presents information on the views of Hexham, England-based veterinarian Will Christie on the use of ovum pick up on infertile animals. Advantage of ovum pick up over embryo collection; Details of the ovum pick up method; Background on the pregnancy rates and embryo yields after the application...

  • Untitled.
    Buss, Jessica // Farmers Weekly; 1/17/2013, Vol. 160 Issue 3, p94 

    The article provides an answer to the question on whether cows do not become immune to a virus like German measles and will continually suffer from infertility or malformed calves based on an experience of a farmer.

  • Breeding soundness exams render better lambing kidding seasons.
    Buss, Jessica // Farm & Dairy; 9/11/2014, Vol. 100 Issue 51, pA18 

    The article focuses on the breeding soundness exams (BSE) for bucks and rams and discusses the causes of infertility, having veterinarian to test the buck's and ram's ability to bread, and reading more about BSE online.

  • Managing postpartum interval and fertility.
    Endecott, Rachel // High Plains Journal; 4/13/2015, Vol. 133 Issue 15, p20B 

    The article discusses the factors that can influence the length of postpartum anestrus period of cows including uterine involution, short cycling, and suckling effects and nutritional status.

  • The Mating Game.
    Williams, John S. // Cats Magazine; May99, Vol. 55 Issue 5, p40 

    Features ten general informations on mating, reproduction and other gynecological factors about cats. Process of fertilization in cats; Diseases that can cause infertility; Breeding superstitions in cats; Effects of vaccination on cats.

  • Variance component estimation for reproductive merit of beef cattle using linear and non-linear models.
    Rust, T.; Van der Westhuizen, J.; Schoeman, S. J.; Van Wyk, J. B. // South African Journal of Animal Science; 2004, Vol. 34 Issue 6, p59 

    An objective was defined for a breeding program in South Africa to improve the female fertility of the national herd. The aim of the study was to change the approach of defining a trait based on female fertility and to define the trait, reproduction merit, as an indicator of the efficiency of...

  • Fertility Relative to Fertility at Current pH.
    Rust, T.; Van der Westhuizen, J.; Schoeman, S. J.; Van Wyk, J. B. // CO2 Science; 12/19/2012, Vol. 15 Issue 51, p8 

    The article presents information on an organism's fertility relative to fertility at current pH.

  • Oocyte production and sperm utilization patterns in semi-fertile strains of Caenorhabditis elegans.
    Kadandale, Pavan; Singson, Andrew // BMC Developmental Biology; 2004, Vol. 4, p1 

    Background: Caenorhabditis elegans hermaphrodites are capable of producing hundreds of progeny. However, genetic and environmental factors can keep many animals from attaining their full reproductive potential. In these situations, efficient use of any functional gametes becomes more important...

  • Antifertility Activity Of Dihydroartemisinin In Male Albino Rats.
    Nwanjo, H.U.; Iroagba, I.I.; Nnatuanya, I.N.; Eze, N.A. // Internet Journal of Endocrinology; 2007, Vol. 4 Issue 1, p3 

    The effects of dihydroartemisinin on epididymal sperm characteristics and testosterone levels in male albino rats were studied. Dihydoartemisinin treatment for 7 days and 21 days in the rats resulted in a decrease in the sperm count, sperm motility and sperm viability. The abnormalities noticed...

  • A model for the evolution of high frequencies of males in an androdioecious plant based on a cross-compatibility advantage of males.
    Vassiliadis, Christine; Valero, Myriam; Saumitou-Laprade, Pierre; Godelle, Bernard // Heredity; Nov2000, Vol. 85 Issue 5, p413 

    75) and phenotypic selection models for the maintenance of androdioecy predict that males (female-sterile individuals) must have an advantage in fertility (K) of at least two in order to invade a hermaphroditic population, and that their equilibrium frequency (xeq=(K - 2)/2(K - 1)) is always...

  • Fertile mule in China and her unusual foal.
    Ruizhang Rong; Xiuqin Yang; Huedi Cai; Jun Wei // Journal of the Royal Society of Medicine; Oct1985, Vol. 78 Issue 10, p821 

    The article presents a study which examined a fertile mule in China. According to the authors, the sterility of mules has long been recognized. But in China, where mules are bred intensively by means of artificial insemination, there has been no doubt that the animals are occasionally fertile....

  • New teat technology.
    Ruizhang Rong; Xiuqin Yang; Huedi Cai; Jun Wei // Farmers Weekly; 2/1/2002, Vol. 136 Issue 5, p39 

    Reports that non-antibiotic, bismuth subnitrate teat seals have proven to be an effective alternative to dry cow therapy for preventing infections. Factor that makes them a promising alternative to conventional dry cow therapy for low cell count cows.

  • More comfort, less stress can solve sow infertility.
    Lawrence, Chrissie // Farmers Weekly; 10/20/2006, Vol. 145 Issue 16, p37 

    The article reports on the efforts of farmers to improve sow fertility in Great Britain. BPEX AI program manager Angela Cliff says there is no definite pattern with infertility, so it is vital to provide sows with the most comfortable, stress-free environment possible, so the impact of any...

  • Fertility proofs are good news for UK industry.
    Buss, Jessica; Allison, Richard // Farmers Weekly; 7/19/2002, Vol. 137 Issue 3, p44 

    Reports on the launching of fertility proofs in Great Britain in 2003 which would allow dairy bulls to be selected to improve milk yield and produce fertile cows. Reasons for the slow arrival of a fertility index in Great Britain; Advantages of fertility index; Information on the Nottingham...

  • Female mice of DDK strain are fully fertile in the intersubspecific crosses with Mus musculus molossinus and M. m. castaneus.
    Wei Dong Zhao; Ishikawa, Akira; Yamagata, Takahiro; Bolor, Hasbaira; Wakasugi, Noboru // Mammalian Genome; Jul2002, Vol. 13 Issue 7, p345 

    The female mice of DDK strain are almost infertile when mated with males from other strains. This phenomenon is caused by the early death of F1 embryos owing to the incompatibility system attributed to the ovum mutant (Om) locus on Chromosome (Chr) 11 and known as DDK syndrome. In the present...

  • Status of dairy cow management and fertility in smallholder farms in Malawi.
    Banda, Liveness; Kamwanja, Leonard; Chagunda, Mizeck; Ashworth, Cheryl; Roberts, David // Tropical Animal Health & Production; Apr2012, Vol. 44 Issue 4, p715 

    A review of the smallholder dairy production in Malawi was conducted using livestock annual reports and other literature that was supplemented with primary data from a baseline survey conducted in December 2009. Smallholder dairy farming in Malawi operates with support from institutions that...

  • The effect of artificial selection for coat color on fitness in a farm population of the sable ( Martes zibellina).
    Kashtanov, S. N.; Lazebny, O. E.; Beketov, S. V.; Imasheva, A. G. // Russian Journal of Genetics; Jun2008, Vol. 44 Issue 6, p727 

    The relationship between the response to artificial selection for darker coat color and fitness in a farm population of the sable ( Martes zibellinaL.) from the Pushkinskoe Fur Farm (Moscow oblast) was studied. The selection was performed during 41 years. By the moment of the study, a response...

  • Meiotic studies in two human reciprocal translocations and their association with spermatogenic failure.
    M. Oliver-Bonet; J. Benet; F. Sun; J. Navarro; C. Abad; T. Liehr; H. Starke; C. Greene; E. Ko; R.H. Martin // Human Reproduction; Mar2005, Vol. 20 Issue 3, p683 

    BACKGROUND: Reciprocal translocations are often associated with infertility in male carriers. However, some carriers present normal semen profiles and are identified because of repetitive pregnancy failures. METHODS: Here, we report two different cases of reciprocal translocations. The first...

  • Productive and reproductive performance and egg quality of laying hens fed diets containing different levels of date pits with enzyme supplementations.
    Al-saffar, Abdulameer; Attia, Youssef; Mahmoud, Mohamed; Zewell, Hassan; Bovera, Fulvia // Tropical Animal Health & Production; Jan2013, Vol. 45 Issue 1, p327 

    Two experiments were conducted to investigate the effect of phytase and/or multienzymes (protease, amyloglucoidase, xylanase, B-glucanase, cellulose, and hemicellulase) on improving the utilization of date pit (DP) in laying hens. In the first one, DP completely replaced corn in four isocaloric...

    Ayodeji, Adeyeye Adewale; Suwaiba, Wakkala // Macedonian Veterinary Review; Sep2013, Vol. 36 Issue 2, p123 

    The study was carried out with the aim of determining the occurrence of cryptorchidism in bulls slaughtered at the Sokoto metropolitan abattoir. Out of 575 bulls examined, 10 (1.74%) were cryptorchid. Nine (90.00%) of this were unilateral cryptorchidism while 1 (10.00%) was bilateral...

  • Genetic Dissection of Hybrid Incompatibilities Between Drosophila simulans and D. mauritiana. I. Differential Accumulation of Hybrid Male Sterility Effects on the X and Autosomes.
    Yun Tao; Sining Chen; Hartl, Daniel L.; Laurie, Cathy C. // Genetics; Aug2003, Vol. 164 Issue 4, p1383 

    Details a study that introgressed segments of the Drosophila mauritania third chromosome into a D. simulans genetic background and tested as homozygotes for viability, male fertility, and female fertility. Evolutionary mechanisms of speciation; Indication that many segments were male sterile,...

  • Genetic Complexity Underlying Hybrid Male Sterility in Drosophila.
    Sawamura, Kyoichi; Roote, John; Chung-I Wu; Yamamoto, Masa-Toshi // Genetics; Feb2004, Vol. 166 Issue 2, p789 

    Recent genetic analyses of closely related species of Drosophila have indicated that hybrid male sterility is the consequence of highly complex synergistic effects among multiple genes, both conspecific and heterospecific. On the contrary, much evidence suggests the presence of major genes...

  • Fitness-related patterns of genetic variation in rhesus macaques.
    Gregory Blomquist // Genetica; Mar2009, Vol. 135 Issue 2, p209 

    Abstract  The patterning of quantitative genetic descriptions of genetic and residual variation for 15 skeletal and six life history traits was explored in a semi-free-ranging group of rhesus macaques (Macaca mulatta Zimmerman 1780). I tested theoretical predictions that explain the...

  • Comparison of the biopsy and cytobrush techniques for diagnosis of subclinical endometritis in mares.
    Buczkowska, Justyna; Kozdrowski, Roland; Nowak, Marcin; Raś, Andrzej; Staroniewicz, Zdzisław; Siemieniuch, Marta J. // Reproductive Biology & Endocrinology; 2014, Vol. 12 Issue 1, p1 

    Background: Endometritis is a major cause of infertility in the mare. Therefore, the diagnosis of this disease is very important in veterinary practice. The objective of this study was to compare bacteriological and cytological results obtained from the mare uterus using biopsy (EB) and...

  • Selection bias in semen studies due to self-selection of volunteers.
    A. Muller; E. De La Rochebrochard; C. Labb-Declves; P. Jouannet; L. Bujan; R. Mieusset; D. Le Lannou; J.F. Guerin; M. Benchaib; R. Slama; A. Spira // Human Reproduction; Dec2004, Vol. 19 Issue 12, p2838 

    BACKGROUND: Reports of a secular decrease in semen quality remain controversial, particularly due to the possibility of selection bias. We aimed to describe the potential bias due to self-selection of volunteers in semen studies involving fecund men. METHODS: Using data from the French...

  • No association of the A260G and A386G DAZL single nucleotide polymorphisms with male infertility in a Caucasian population.
    Petra Tschanter; Elena Kostova; C.Marc Luetjens; Trevor G. Cooper; Eberhard Nieschlag // Human Reproduction; Dec2004, Vol. 19 Issue 12, p2771 

    BACKGROUND: The human DAZ gene family includes two autosomal genes, BOULE and DAZL, and a Y-chromosomal DAZ gene cluster. All are RNA-binding proteins and assumed to be master regulators of germline gene expression. We have investigated the impact of two DAZL polymorphisms, located at nucleotide...

  • Female begging in European robins: do neighbors eavesdrop for extrapair copulations?
    Joe A. Tobias; Nathalie Seddon // Behavioral Ecology; Sep2002, Vol. 13 Issue 5, p637 

    Female European robins beg for food from their mates throughout the breeding season using far-carrying “seep” calls which resemble the begging calls of fledglings. We investigated the possibility that these calls are eavesdropped by neighboring males and used as cues to target...

  • Hybrids and hybridity.
    Clarke, Cyril A. // Journal of the Royal Society of Medicine; Oct1984, Vol. 77 Issue 10, p821 

    The article focuses on a research on hybrid animals. It cites arguments about the reasons behind the sterility of animal species. The mule which is a cross between a mare and a jack donkey is a classical type of animal hybrid. Lizards sometimes hybridize but are likely to be sterile because of...

  • Nonsurgical sterilization research gives birth to new veterinary tools.
    WHITCOMB, RACHAEL // DVM: The Newsmagazine of Veterinary Medicine; Nov2011, Vol. 42 Issue 11, p22 

    The article reports that veterinary researchers in the U.S. are developing new methods for non-surgical sterilization of animals. Researchers at the University of Florida (UF) recently discovered that a contraceptive developed by the U.S. Department of Agriculture's Animal and Plant Health...

  • A longitudinal, prospective study on emotional adjustment before, during and after consecutive fertility treatment cycles.
    C.M. Verhaak; J.M.J. Smeenk; A. van Minnen; J.A.M. Kremer; F.W. Kraaimaat // Human Reproduction; Aug2005, Vol. 20 Issue 8, p2253 

    BACKGROUND: A longitudinal study into the course of the emotional response to IVF from pre-treatment to 6 months post-treatment and factors that contributed to that course. METHODS: A total of 148 IVF patients and 71 partners completed self-report questionnaires on anxiety, depression,...

  • Fertility and ovarian function are preserved in women treated with an intensified regimen of cyclophosphamide, adriamycin, vincristine and prednisone (Mega-CHOP) for non-Hodgkin lymphoma.
    Eldad J. Dann; Ron Epelbaum; Irit Avivi; Menachem Ben Shahar; Nissim Haim; Jacob M. Rowe; Zeev Blumenfeld // Human Reproduction; Aug2005, Vol. 20 Issue 8, p2247 

    BACKGROUND: Intensive chemotherapy is widely used to improve the outcome of aggressive non-Hodgkin lymphoma (NHL). Since these regimens may cause premature ovarian failure (POF), the ovarian function was studied in 13 consecutive women aged =40 years, treated with four cycles of intensified CHOP...

  • Adenomyosis in endometriosis—prevalence and impact on fertility. Evidence from magnetic resonance imaging.
    G. Kunz; D. Beil; P. Huppert; M. Noe; S. Kissler; G. Leyendecker // Human Reproduction; Aug2005, Vol. 20 Issue 8, p2309 

    BACKGROUND: The hypothesis is tested that there is a strong association between endometriosis and adenomyosis and that adenomyosis plays a role in causing infertility in women with endometriosis. METHODS. Magnetic resonance imaging of the uteri was performed in 160 women with and 67 women...

  • Patients with abnormal sperm parameters have an increased sex chromosome aneuploidy rate in peripheral leukocytes.
    Adele De Palma; Nunziatina Burrello; Nunziata Barone; Rosario D'Agata; Enzo Vicari; Aldo E. Calogero // Human Reproduction; Aug2005, Vol. 20 Issue 8, p2153 

    BACKGROUND: Patients with oligoasthenoteratozoospermia (OAT) and normal karyotypes have an increased sperm aneuploidy rate. This may be due to an altered intratesticular environment that affects the chromosomal segregation mechanism(s). Alternatively, it may be due to a generalized meiotic and...

  • Identification and evaluation of a novel sperm protamine abnormality in a population of infertile males.
    Vincent W. Aoki; Lihua Liu; Douglas T. Carrell // Human Reproduction; May2005, Vol. 20 Issue 5, p1298 

    BACKGROUND: A significant relationship exists between an abnormally high sperm protamine-1 (P1)/protamine-2 (P2) ratio and male infertility. In this study we investigate whether a decreased P1/P2 ratio is also linked to male infertility and we attempt to describe, at the protein expression...

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