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Male Reproductive Traits and Their Relationship to Reproductive Traits in Their Female Progeny: A Systematic Review

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Burns, B. M., Gazzola, C., Holroyd, R. G., Crisp, J. and McGowan, M. R. (2011) Male Reproductive Traits and Their Relationship to Reproductive Traits in Their Female Progeny: A Systematic Review. Reproduction in Domestic Animals, 46 (3). pp. 534-553. ISSN 0936-6768

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Article Link: http://dx.doi.org/10.1111/j.1439-0531.2011.01748.x

Publisher URL: http://dx.doi.org/10.1111/j.1439-0531.2011.01748.xhttp://onlinelibrary.wiley.com/store/10.1111/j.1439-0531.2011.01748.x/asset/j.1439-0531.2011.01748.x.pdf?v=1&t=j1vbl4nm&s=e0aba6abf6c4b4e23cae1b7a4d57be5ecda00ca7


The overall objective of one of the major research programs in the Co-operative Research Centre (CRC) for Beef Genetic Technologies is to 'Improve female reproductive performance' in tropical, northern Australian beef cattle herds. To address this overall objective, a quantitative genetics project focused on investigation of male reproductive traits was designed and linked to three female reproduction-focussed projects, (i) discovery of genes associated with post-partum re-conception and age at puberty; (ii) expression of genes associated with post-partum re-conception; and (iii) early predictors of lifetime female reproductive performance. During the initial planning of this male reproductive traits project, the CRC Scientific Review Committee recommended that the research team investigate and evaluate potentially new, early-life (i.e able to be measured before 2 years of age) predictors of both male and female reproductive performance. To address this recommendation, the following was carried out: (i) criteria for selection of traditional and candidate traits were established; (ii) methodology for tabulation of potential traits/phenotypes that define male and female reproductive function was developed; and (iii) a systematic scientific review of early-life predictors of male and female fertility was prepared. This review concluded that although factors that might be useful in predicting male reproductive performance have been studied for many years, there was relatively little useful information available to meet the objectives of this review. It was also concluded that the direction of future research should be guided not only by previous research which was scarce, but also by speculative hypotheses arising from an understanding of the physiological, endocrinological and genetic processes active in reproduction. A small number of new traits were recommended in addition to traditional sperm morphology, sexual behaviour, anatomical structure and growth traits. Potential additional traits include measurement of gonadotrophin-releasing hormone-stimulated luteinizing hormone (GnRH-stimulated LH); inhibin; several seminal plasma proteins (osteopontin, spermadhesin and seminal plasma proteins BSP30 and phospholipase A(2) could be used in an index); 11 beta-hydroxysteriod dehydrogenase; and leptin. In addition, the potential also exists to screen animals for a number of genetic markers associated with age of puberty, follicular recruitment and ovulation rate and genes associated with bovine seminal plasma protein and testosterone production. Insulin-like growth factor-1 (IGF-1) measurements are included because of their association with growth parameters, and an additional analysis demonstrated associations with male and female reproductive traits. Some of these factors have been previously evaluated in small numbers of animals of various species under intensive management conditions. Therefore, there is a need to evaluate these factors in much larger numbers of beef cattle grazing semi-extensive tropical production systems in northern Australia to determine their value in improving beef cattle enterprise profitability through improved herd fertility. © The State of Queensland (through the Department of Employment, Economic Development and Innovation) 2011.

Item Type:Article
Keywords:Platelet-activating-factor; bull seminal plasma; additive genetic-relationships; fertility-associated proteins; lifetime pregnancy rate; affecting twinning rate; Australian beef-cattle; scrotal circumference; ovulation rate; pubertal traits.
Subjects:Science > Biology > Genetics
Science > Biology > Reproduction
Animal culture > Breeding and breeds
Animal culture > Cattle > Meat production
Live Archive:20 Mar 2019 23:30
Last Modified:03 Sep 2021 16:45

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