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 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.

  • 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 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.

  • 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.

  • Sterile release.
    Buss, Jessica // 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.

  • 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.

  • 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...

  • 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.

  • 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...

  • 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...

  • Untitled.
    THOMAS, HEATHER SMITH // 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.

  • 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...

  • 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...

  • Acropora (Anthozoa: Scleractinia) Reproductive Synchrony and Spawning Phenology in the Northern Line Islands, Central Pacific, as Inferred from Size Classes of Developing Oocytes.
    Pondella II, Daniel J.; Froeschke, John T.; Wetmore, Lynne S.; Miller, Eric; Valle, Charles F.; Medeiros, Lea // Pacific Science; Oct2008, Vol. 62 Issue 4, p569 

    Little is known of the timing of reproduction in central Pacific coral populations near the equator. Oocyte pigmentation and size comparison with sizes of mature eggs reported in published literature were used to infer intra- and interspecific synchrony and probable spawning phenology in 15...

  • Fertility Relative to Fertility at Current pH.
    Pondella II, Daniel J.; Froeschke, John T.; Wetmore, Lynne S.; Miller, Eric; Valle, Charles F.; Medeiros, Lea // 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.

  • Sterility Effect of the Commercial Neem Extract NeemAzal-T/S® (Azadirachta indica A. Jus.) on Male Rats (Rattus norvegicus).
    Morovati, Mohsen; Mahmoudi, Masoumeh; Ghazi-Khansari, Mahmoud; Jabbari, Lida; Khalilaria, Alireza // Turkish Journal of Zoology; 2009, Vol. 33 Issue 2, p201 

    Numerous studies with experimental animals have shown that neem seed extracts have transient and reversible effects on sterility. NeemAzal-T/S® (1%) was fed to 3 experimental animal groups via stomach intubation (5, 15, and 25 mg/kg) for 6 days and the control group was given only tap water....

  • 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....

  • Queen pheromones affecting the production of queen-like secretion in workers.
    Tamar, Katzav-Gozansky; Raphaël, Boulay; Victoria, Soroker; Abraham, Hefetz // Journal of Comparative Physiology A: Neuroethology, Sensory, Neu; Jul2006, Vol. 192 Issue 7, p737 

    The honeybee queen pheromones promote both worker sterility and worker-like pheromone composition; in their absence workers become fertile and express the queen pheromones. Which of the queen pheromones regulate worker pheromone expression and how, is still elusive. Here we investigated how two...

  • Vet Viewpoint.
    Tamar, Katzav-Gozansky; Raphaël, Boulay; Victoria, Soroker; Abraham, Hefetz // Farmers Weekly; 11/27/2009, Vol. 151 Issue 22, p42 

    The article presents a regional round-up of key veterinary issues in Great Britain including one from Toby Kemble of Vets Surgery who discusses the rise of calf pneumonia cases due to winter housing, another from Bridget Taylor of Wright and Morten who stresses the need for checking bull...

  • Seasonal infertility on the up.
    Tamar, Katzav-Gozansky; Raphaël, Boulay; Victoria, Soroker; Abraham, Hefetz // Farmers Weekly; 11/18/2011, Vol. 156 Issue 21, p50 

    The author reports on the increase in seasonal infertility in pigs at his farm in Stewartstown in County Tyrone, Northern Ireland. He notes the detection of a few sows that must have reabsorbed the pregnancy not long after being tested in pig, and the speedy exit of animals to the cull sow...

  • New teat technology.
    Tamar, Katzav-Gozansky; Raphaël, Boulay; Victoria, Soroker; Abraham, Hefetz // 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...

  • DVM aims to set Guinness speed record for cat sterilizations.
    Lawrence, Chrissie // DVM: The Newsmagazine of Veterinary Medicine; Jan2008, Vol. 39 Issue 1, p6 

    The article reports that veterinarian Randy Eisel who works with animal control in Collier County, Florida has spent 10 hours to neuter 56 cats last month. Eisel's goals are to promote spaying, neutering, and to earn a spot in the Guinness Book of World Records. According to Eisel, a pet...

  • Sterilization laws gain steam.
    Lawrence, Chrissie // DVM: The Newsmagazine of Veterinary Medicine; Sep2011, Vol. 42 Issue 9, p42 

    The article offers news briefs related to bills that are promoting animal sterilization in the U.S. which include Senate Bill 550, a sterilization law and a sterilization bill.

  • Fresh light on fertility of maidens.
    Buss, Jessica // Farmers Weekly; 10/21/2005, Vol. 143 Issue 17, p49 

    Focuses on the factors that cause fertility problems in maiden beef heifers. Results of a study on a group of maiden heifers run with a bull for several weeks, conducted by Colin Penny of Edinburgh's Royal Dick veterinary school in Scotland; Reasons behind the low level of pregnancy of heifers;...

  • 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...

  • Bacteria in semen samples from suspected infertile rams.
    Wei Dong Zhao; Ishikawa, Akira; Yamagata, Takahiro; Bolor, Hasbaira; Wakasugi, Noboru // Veterinary Record: Journal of the British Veterinary Association; 5/10/2008, Vol. 162 Issue 19, p604 

    The article highlights the results of a study which describe the bacteria isolated from ejaculates from 63 rams that were suspected to be infertile. The research was conducted by Dr. Arthur Otter. The ejaculates were assessed in terms of sperm concentration, motility and abnormalities. The most...

  • Monthly must do's -- August.
    Wei Dong Zhao; Ishikawa, Akira; Yamagata, Takahiro; Bolor, Hasbaira; Wakasugi, Noboru // Farmers Weekly; 7/29/2011, Vol. 156 Issue 5, p37 

    The article offers several tips on how to reduce the risk of autumn infertility in livestock. It says that the practical steps to minimize the risk of the condition include reinstalling the winter feed curve, increasing the amount of bedding and keeping gilts and sows at a comfortable...

  • 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...

  • Birds, Bees and Rams.
    Murphy, Gerry // Irish Farmers Monthly; Oct2007, p60 

    The article provides information on the managing ram farm in Ireland. According to the author, it is important for a farmer to have a basic understanding of the main action of ram physiology and ewe or ram interaction to be aware on the issue of ram's fertility. According to the studies in the...

  • Should fertilization treatment start with reducing stress?
    Daniel M. Campagne // Human Reproduction; Jul2006, Vol. 21 Issue 7, p1651 

    In the past few decades, new and more efficient techniques to help solve fertility problems have become widely available throughout the developed world. These techniques include hormonal stimulation, ICSI, gamete intra-Fallopian transfer (GIFT) and IVF, and their cost is, on average,...

  • 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...

  • DYNAMICS OF SOME BASIC DEMOGRAPHIC INDICATORS IN BULGARIA FOR THE LAST CENTURY.
    Petkov, G.; Marinova, J.; Chakarova, P.; Dimitrova, Sv.; Yordanov, G.; Peeva, K.; Parashkevova, B.; Chamova, G.; Marinov, V.; Zdravkova, J. // Trakia Journal of Sciences; 2010 Supplement 2, Vol. 8, p453 

    Purpose: to describe and analyze basic demographic indicators in the last century, to discuss the opportunities for overcoming the present demographic crisis. Methods: Information from the national health statistics and the regional office of WHO in Copenhagen for the past 100 years. A...

  • 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...

  • Untitled.
    Balsom, Aly // Farmers Weekly; 8/30/2013, Vol. 159 Issue 34, p28 

    The article presents advice to livestock farmers in Great Britain as of August 30, 2013, including prevention of autumn infertility in sows and gilts.

  • CRYPTORCHIDISM AMONG INDIGENOUS BREEDS OF BULLS IN A SEMI-ARID REGION OF NIGERIA.
    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...

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