The Role of Sperm Morphology Standards in the Laboratory Assessment of Bull Fertility in Australia

Autor: V.E.A. Perry

Publikováno v: Frontiers in Veterinary Science, Vol 8 (2021)

The lack of standardization in the laboratory assessment of semen questions the reliability of semen analysis, and makes meaningful interpretation of these evaluations impossible. We herein describe a standardization program for morphology assessment

Externí odkaz: https://doaj.org/article/1651dc9f870047f9aa729803f8e59e0d

Supplementation of rangeland primiparous Bos indicus x Bos taurus beef heifers during lactation. 2. Effects upon the reproductive development of bull calf progeny

Autor: M.J. Callaghan, V.E.A. Perry, Raymond J. Rodgers

Publikováno v: Theriogenology. 152:83-93

This experiment evaluated the effect of pre-weaning plane of nutrition of dams upon reproductive development in Bos indicus x Bos taurus bull offspring reared under extensively managed conditions in the northern Australia rangelands. Following artifi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95c7da6e0bfbfbeb30a9b9fcfddae85c
https://doi.org/10.1016/j.theriogenology.2020.04.032

Periconception and First Trimester Diet Modifies Appetite, Hypothalamic Gene Expression, and Carcass Traits in Bulls

Autor: Matthew Callaghan, Katrina J. Copping, G.H. Geesink, Mini A. Vithayathil, Raymond J. Rodgers, I. Caroline McMillen, Beverly S. Muhlhausler, Jessica R. Gugusheff, V.E.A. Perry

Publikováno v: Frontiers in Genetics
Frontiers in Genetics, Vol 12 (2021)

Nulliparous yearling beef heifers (n=360) were used to evaluate the effects of maternal dietary protein during the periconception and first trimester periods of gestation on postnatal growth, feedlot performance, carcass characteristics, and the expr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b885d4b6e321c070fe5d0aba168e1366
https://pubmed.ncbi.nlm.nih.gov/34539749

Effect of breed, age, season and region on sperm morphology in 11,387 bulls submitted to breeding soundness evaluation in Australia

Autor: V.E.A. Perry, Kelli A. Prosser, Judy Felton-Taylor, Sheridan Gentili, Katrina J. Copping, Juan H. Hernandez-Medrano, Paula E. Macrossan

This study reports the distribution of sperm morphology defects by breed, age, season and region of 11,387 bulls in 500 herds in Australia and near Pacific Islands during annual BBSE. Bull location was divided into 4 broad climatic regions based upon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e7ce1cd20f70b1c7ee850daee4c2a46
https://hdl.handle.net/11541.2/139183

Transcript abundance of stromal and thecal cell related genes during bovine ovarian development

Autor: James Breen, Katja Hummitzsch, V.E.A. Perry, Nicholas Hatzirodos, Raymond J. Rodgers, Helen F. Irving-Rodgers, Richard A. Anderson

Publikováno v: Hatzirodos, N, Hummitzsch, K, Irving-rodgers, H F, Breen, J, Perry, V E A, Anderson, R A, Rodgers, R J & Bouma, G J 2019, ' Transcript abundance of stromal and thecal cell related genes during bovine ovarian development ', PLoS ONE, vol. 14, no. 3, pp. e0213575 . https://doi.org/10.1371/journal.pone.0213575
PLoS ONE, Vol 14, Iss 3, p e0213575 (2019)
PLoS ONE

Movement and expansion of mesonephric-derived stroma appears to be very important in the development of the ovary. Here, we examined the expression of 24 genes associated with stroma in fetal ovaries during gestation (n = 17; days 58-274) from Bos ta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5749f2d4d6b215c96619187635eada04
https://hdl.handle.net/20.500.11820/983f009f-fcb4-4d82-85de-083bd7d04025