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You searched for: Journal name Reproduction, fertility, and development Remove constraint Journal name: Reproduction, fertility, and development Publication year rev 7980-2020 Remove constraint Publication year rev: 7980-2020 Source 2020 v.32 no.2 Remove constraint Source: 2020 v.32 no.2
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1. 10 Pregnancy rates following artificial insemination or embryo transfer in lactating Holstein cows

Author:
M. Oliveira; R. Santos; R. Chebel; D. Demetrio
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 130
ISSN:
1031-3613
Subject:
Holstein; artificial insemination; autumn; blood; calves; calving; conception rate; corpus luteum; cows; embryo (animal); embryo transfer; embryogenesis; genetic merit; heat; herds; in vitro fertilization; lactating females; lactation; milk production; oocytes; ovulation; pregnancy rate; summer; ultrasonography; California
Abstract:
... Excessive heat affects the fertility of high production lactating cows, and reduced pregnancy rates (PR) are observed during summer and early fall. Embryo production programs are used to produce more calves from high genetic merit animals, but could it also increase fertility by bypassing all the negative variables affecting the embryo development before Day 7 (oocyte development, ovulation, ferti ...
DOI:
10.1071/RDv32n2Ab10

2. 100 Relationship between corpus luteum blood flow evaluated via colour Doppler ultrasound and pregnancy rate in bovine embryo transfer recipients

Author:
M. K. Sermersheim; B. R. Lindsey; L. M. Naves; M. Rubessa; M. B. Wheeler
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 176
ISSN:
1031-3613
Subject:
blastocyst; blood flow; color; corpus luteum; crossbreds; dairy heifers; embryo transfer; image analysis; pregnancy rate; sample size; tissues; ultrasonics; ultrasonography; uterus; zebu
Abstract:
... The advent of colour Doppler ultrasound has allowed evaluation of blood flow to bodily tissues. This novel technology is being tested as a tool to improve efficiency in a variety of livestock reproduction programs. The objective of the present study was to evaluate the relationship between blood flow to the ovarian corpus luteum (CL), imaged via colour Doppler ultrasound, and pregnancy rate in cro ...
DOI:
10.1071/RDv32n2Ab100

3. 101 Treatment with gonadotrophin-releasing hormone on Day 7 or 21 does not reduce pregnancy loss in dairy heifers receiving invitro-produced embryos

Author:
B. J. Duran; R. V. Sala; P. L. J. Monteiro; C. Gamarra; M. Fosado; E. Walleser; A. Prata; R. Gennari; J. F. Moreno; M. C. Wiltbank; A. Garcia-Guerra
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 176-177
ISSN:
1031-3613
Subject:
Holstein; acetates; body condition; controlled internal drug release devices; corpus luteum; dairy heifers; data collection; embryo transfer; estrus; gonadotropin-releasing hormone; ovulation; pregnancy; progesterone; prostaglandins; regression analysis; ultrasonography
Abstract:
... Previous research has shown that induction of an accessory corpus luteum (CL) by administration of gonadotrophin-releasing hormone (GnRH) on Day 5 increases circulating progesterone and reduces pregnancy loss between Days 33 and 60 in heifers receiving invitro-produced (IVP) embryos. Therefore, the objective of the present study was to determine whether timing of induction of an accessory CL influ ...
DOI:
10.1071/RDv32n2Ab101

4. 102 A delay in maternal zygotic transition may lead to early embryonic loss in poor-quality bovine blastocysts

Author:
H. Georges; J. Bishop; H. Van Campen; J. Barfield; T. Hansen
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 177
ISSN:
1031-3613
Subject:
bioinformatics; blastocyst; blastomeres; dairy cows; death; embryo implantation; embryo transfer; embryonic mortality; endometrium; enzymatic hydrolysis; enzymes; estradiol; gene expression; gene expression regulation; genes; genetic traits; in vitro fertilization; industry; messenger RNA; mice; mitosis; oocytes; permeability; pregnancy; pregnenolone; progesterone; proteins; risk; sequence analysis; transcription (genetics); translation (genetics); zona pellucida
Abstract:
... Increased genetic potential and performance of dairy cows has coincided with a decline in fertility. Early embryonic mortality accounts for 75-80% of this decline in fertility, costing the industry over $1.28 trillion worldwide. Despite advancements in assisted reproductive technologies and embryo transfer, many transferred embryos do not survive past Day 24 of gestation, suggesting flaws in embry ...
DOI:
10.1071/RDv32n2Ab102

5. 103 Effects of administration of human chorionic gonadotrophin at Day 5 post-ovulation on development of the original corpus luteum depend on the locational relationship between the original and accessory corpora lutea

Author:
K. Hazano; S. Haneda; M. Matsui
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 177-178
ISSN:
1031-3613
Subject:
analysis of variance; beef cattle; blood flow; controlled internal drug release devices; corpus luteum; crossbreds; drugs; embryogenesis; estradiol; estrus; gonadotropin-releasing hormone; human chorionic gonadotropin; ovarian follicles; ovulation; prostaglandins; ultrasonography
Abstract:
... In cattle, human chorionic gonadotrophin (hCG) is administered at Day 5 post-ovulation to improve fertility. This treatment can induce ovulation of the first-wave dominant follicle (W1DF), from which an accessory corpus luteum (CL) is generated. In addition, hCG has the effect of promoting CL development. It is possible that the locational relationship between the original and accessary CLs influe ...
DOI:
10.1071/RDv32n2Ab103

6. 104 SOFaaci-HEPES or holding media can be used for embryo loading without changes in pregnancies per embryo transfer nor pregnancy loss in an invitro-produced embryo transfer program

Author:
D. Pereira; D. Moreno; R. Sala; L. Carrenho-Sala; M. Fosado; J. Moreno; A. Garcia-Guerra
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 178
ISSN:
1031-3613
Subject:
Holstein; acetates; cloprostenol; controlled internal drug release devices; corpus luteum; culture media; drugs; embryo culture; embryo transfer; embryogenesis; gonadotropin-releasing hormone; heifers; nutrient content; nutrients; pregnancy; regression analysis; straw; ultrasonography; viability
Abstract:
... Time elapsed between removal from culture and embryo transfer (ET) can have a profound effect on the success of an invitro-produced (IVP) ET program. The embryo culture medium provides the necessary nutrients for embryo development and the use of media with a different nutrient composition to load embryos into straws could negatively affect embryo viability. The objective of the present study was ...
DOI:
10.1071/RDv32n2Ab104

7. 106 Comparative growth rates and haematological parameters from calves born by transfer of vitrified invitro-produced embryos and stepbrother calves born by AI

Author:
J. S. Lopes; C. Soriano-Úbeda; L. Sarrias-Gil; E. París-Oller; S. Navarro-Serna; R. Latorre; P. Coy
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 179-180
ISSN:
1031-3613
Subject:
assisted reproductive technologies; blood sampling; body temperature; bulls; calves; cows; culture media; developmental stages; embryo (animal); embryo culture; eosinophils; glucose; heart; heart rate; hematologic tests; jugular vein; progeny; respiratory rate; thorax; withers
Abstract:
... Assisted reproductive technologies (ART) are being extensively used to produce cattle offspring. However, as shown by Siqueira et al. (2017 J. Dairy Sci. 100, 5899-5908; https://doi.org/10.3168/jds.2016-12539), phenotypical and performance differences between cows derived from distinct ART can be found at different stages of development. Thus, in an attempt to mimic the natural environment, reprod ...
DOI:
10.1071/RDv32n2Ab106

8. 108 Use of seminal plasma as ovulation inductor in alpacas (Vicugna pacos) embryo recipient and its effect on pregnancy rate

Author:
W. Huanca; K. Garcia; W. F. Huanca; A. Cordero; J. Malaga
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 181
ISSN:
1031-3613
Subject:
Vicugna pacos; acetates; adults; alpacas; artificial vagina; biotechnology; body condition; breeding programs; corpus luteum; embryo transfer; equine chorionic gonadotropin; females; frozen storage; gonadotropin-releasing hormone; males; nerve growth factor; ovarian follicles; ovulation; pregnancy rate; seminal plasma; spermatozoa; storage temperature; ultrasonography; uterus
Abstract:
... Alpacas, like other camelids, are classified as induced ovulators because an external stimulus is required for the occurrence of ovulation. Recent studies have identified the β-nerve growth factor (β-NGF), a protein present in the seminal plasma (SP), as responsible for inducing ovulation in this species and having potent luteotropic function. We speculate that SP can be used in reproductive biote ...
DOI:
10.1071/RDv32n2Ab108

9. 109 Effect of ruminal infusion with propylene glycol on the invitro embryo production of Holstein (Bos taurus) prepubertal heifers and pregnancy rate of the embryo transfer

Author:
R. Tosta; R. Sala; D. Pereira; D. Kendall; F. Elliff; J. Ziemer; E. Adelsberger; J. Moreno; B. Catussi; P. Baruselli
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 181
ISSN:
1031-3613
Subject:
Holstein; blastocyst; blood; blood sampling; embryo transfer; follicle-stimulating hormone; glucose; heifers; hematologic tests; hexokinase; insulin-like growth factor I; oocytes; pregnancy rate; propylene glycol; puberty; radioimmunoassays
Abstract:
... The aim of this study was to evaluate the effect of ruminal infusion with propylene glycol (PG) on the invitro embryo production (IVEP) of Holstein (Bos taurus) prepubertal heifers (7 to 8 months). For this study, 16 prepubertal heifers were distributed into two groups: Propylene Glycol Group (PGG; n=8) and Control Group (CG; n=7). Additionally, 8 pubertal heifers were used for the positive contro ...
DOI:
10.1071/RDv32n2Ab109

10. 11 Invivo-derived embryo pregnancy rates at Maddox Dairy from 2008 to 2018

Author:
D. Demetrio; A. Magalhaes; M. Oliveira; R. Santos; R. Chebel
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 130-131
ISSN:
1031-3613
Subject:
Holstein; blastocyst; conception rate; cows; decision making; embryo transfer; estrus; heifers; herds; lactating females; lactation; milk; milk production; pregnancy diagnosis; pregnancy rate; statistical analysis; ultrasonography; California
Abstract:
... Maddox Dairy, located in Riverdale, CA, USA, is a Holstein herd that milks 3500 cows with a 305-day mature-equivalent milk production of 12 800 kg, and they have been producing high genetic animals by embryo transfer (ET) since the early 1980s. Invivo-derived embryos from Holstein donors were transferred fresh (grade 1 or 2) or frozen (grade 1), at morula (4), early blastocyst (5), or blastocyst ( ...
DOI:
10.1071/RDv32n2Ab11

11. 113 Effect of antioxidants on motility and fertility of liquid-stored bovine sperm

Author:
Y. Honkawa; T. Fujikawa; N. Miura; C. Kubota
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 183-184
ISSN:
1031-3613
Subject:
air; analysis of variance; antioxidants; beta-mercaptoethanol; blastocyst; bulls; egg yolk; embryogenesis; freeze-thaw cycles; frozen storage; glutathione; in vitro fertilization; liquid nitrogen; liquids; oocytes; semen; sperm concentration; sperm motility; spermatozoa
Abstract:
... It is difficult to maintain sperm in liquid storage for a long time, compared with permanent frozen storage in liquid nitrogen. Antioxidants have been reported to improve the quality and fertility of liquid-stored semen. In this study, we investigated whether antioxidants can extend the motility and fertility of frozen-thawed sperm in liquid storage. Frozen-thawed semen from one Japanese black bul ...
DOI:
10.1071/RDv32n2Ab113

12. 115 Invivo confocal laser endomicroscopy visualisation of fresh and frozen bull spermatozoa in the genital tract of dairy heifers

Author:
C. Richard; X. Druart; T. Saint-Beuve; V. Gelin; L. Laffont; S. Ruffini; S. Ghazali; M. Saint-Dizier; V. Duranthon; O. Sandra; B. Grimard; V. Mauffre
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 184-185
ISSN:
1031-3613
Subject:
algorithms; blastocyst; bulls; catheters; cervix; chlorides; dairy cows; dairy heifers; dyes; estrus; ewes; freezing; image analysis; in vitro fertilization; phenotype; pregnancy; rhodamines; semen quality; spermatozoa; uterus; vagina
Abstract:
... Fertility in cattle includes the ability of the uterus to provide the appropriate environment for pregnancy success, including the transport of spermatozoa before fertilization. Confocal laser endomicroscopy technology (Cellvizio) has been previously used in small ruminants to visualise labelled spermatozoa invivo in the uterine horns of ewes (Druart et al. 2009 Reprod. 138, 15-53). Nevertheless, ...
DOI:
10.1071/RDv32n2Ab115

13. 116 Effect of different energy sources on motility and calcium ionophore-induced acrosome reaction in equine sperm

Author:
L. Ramírez-Agámez; I. Ortíz; C. Hernández-Avilés; C. Love; K. Hinrichs
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 185
ISSN:
1031-3613
Subject:
Pisum sativum; acrosome; acrosome reaction; agglutinins; air; analysis of variance; bicarbonates; bovine serum albumin; calcium; calcium ionophores; energy; flow cytometry; glucose; glycolysis; lactate dehydrogenase; lactic acid; oxidative phosphorylation; oxidative stress; pH; pyruvic acid; semen; sperm motility; staining; stallions
Abstract:
... Equine sperm appears to differ from sperm of other species, preferring oxidative phosphorylation over glycolysis for energy production. However, there is little information about the effects of different energy sources on capacitation-related events in equine sperm. We evaluated stallion sperm incubated in the presence of different energy sources at a pH (~8.3) known to support some aspects of cap ...
DOI:
10.1071/RDv32n2Ab116

14. 117 Supplementation of IVF medium with nerve growth factor improved bovine embryonic cleavage rates during summer months

Author:
E. Amiss; J. W. Stewart; V. M. Negrón-Pérez; K. Jones; H. Haines; M. L. Rhoads; F. S. Lima; J. L. Stewart
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 185-186
ISSN:
1031-3613
Subject:
albumins; blastocyst; bulls; carbon dioxide; conceptus; corpus luteum; cows; culture media; embryogenesis; freeze-thaw cycles; heat stress; hyaluronoglucosaminidase; in vitro fertilization; lactic acid; models; nerve growth factor; nerve tissue; neurons; oocytes; oxygen; pregnancy; pyruvic acid; seminal plasma; summer; zygote
Abstract:
... Nerve growth factor-β (NGF), a protein originally associated with regulation of neuron development, has been found to play a role in the reproductive system of mammals. Previous research showed that administration of NGF to cows resulted in enhanced conceptus development. Although these effects were speculated to be a result of improved corpus luteum function, whether NGF could act directly on the ...
DOI:
10.1071/RDv32n2Ab117

15. 118 Semen quality and fertilization ability of myostatin-knockout boars

Author:
M.-F. Xuan; S.-Z. Han; B.-H. Quan; X.-J. Yin; J.-D. Kang
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 186
ISSN:
1031-3613
Subject:
Duroc; acrosome; blastocyst; boars; cell lines; color; ejaculation; genotype; hybrids; in vitro fertilization; mitochondria; odors; oocytes; pH; phenotype; piglets; plasma membrane; pork; progeny; propidium; reproductive performance; semen quality; sexual maturity; sires; somatic cells; sows; staining; t-test
Abstract:
... Myostatin-knockout (MSTN−/−) pigs may provide a source of healthy lean protein for human consumption. However, little is known about the effect of this knockout on semen quality, which is important if these pigs are used for production. The purpose of this study is to evaluate the semen quality and fertility of MSTN−/− boars. We generated MSTN−/− boars from Duroc-Landrace-Yorkshire hybrid pig cell ...
DOI:
10.1071/RDv32n2Ab118

16. 120 Use of fixable dyes to analyze equine sperm membrane integrity and acrosome reaction after A23187 treatment

Author:
I. Ortiz; M. Felix; H. Resende; C. Love; K. Hinrichs
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 187
ISSN:
1031-3613
Subject:
acrosome; acrosome reaction; agglutination; agglutinins; analysis of variance; bovine serum albumin; flow cytometry; fluorescein; horses; in vitro fertilization; lactic acid; propidium; pyruvic acid; semen; sperm capacitation; staining; viability
Abstract:
... Conventional IVF is not successful in the horse, and current work is focused on factors affecting sperm capacitation in this species. Challenges arise in assessing equine sperm incubated in media containing capacitation promotors, as some of these factors cause sperm head-to-head binding (aggregation). Our preliminary microscopic findings showed that sperm aggregates are largely of viable sperm, w ...
DOI:
10.1071/RDv32n2Ab120

17. 121 Effect of pentoxifylline on motility of good- and poor-quality frozen-thawed equine sperm

Author:
M. Felix; I. Ortiz; H. Resende; J. Brom-de-Luna; C. Love; K. Hinrichs
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 187
ISSN:
1031-3613
Subject:
bovine serum albumin; centrifugation; enzyme inhibitors; enzymes; freeze-thaw cycles; freezing; horses; intracytoplasmic sperm injection; lactic acid; pentoxifylline; pyruvic acid; semen; sperm motility; sperm quality; thawing
Abstract:
... Equine semen used for intracytoplasmic sperm injection (ICSI) is typically frozen-thawed and may be of poor quality. To prepare sperm for ICSI, semen is typically centrifuged to remove freezing extender. However, centrifugation can cause damage to sperm, which is especially meaningful if sperm quality is already poor. We evaluated a method for selection of sperm without centrifugation, using a “sw ...
DOI:
10.1071/RDv32n2Ab121

18. 123 Nerve growth factor-induced ovulation in llamas: Evidence of hypothalamic refractoriness to nerve growth factor during the declining phase of the luteinising hormone surge

Author:
R. Carrasco; G. Adams
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 188-189
ISSN:
1031-3613
Subject:
Camelidae; adults; analysis of variance; blood plasma; blood sampling; catheters; copulation; gonadotropin-releasing hormone; hypothalamus; intravenous injection; llamas; luteinizing hormone; mechanism of action; nerve growth factor; nerve tissue; ovarian follicles; ovulation; pharmacokinetics; radioimmunoassays; receptors; seminal plasma; t-test; ultrasonography
Abstract:
... Nerve growth factor (NGF) in semen is responsible for triggering ovulation after copulation in camelids. Interaction of NGF with its cognate receptors results in a preovulatory luteinising hormone (LH) surge that leads to ovulation, but the pharmacokinetics of NGF and the mechanism by which it mediates LH release are unknown. In an effort to elucidate the site and mechanism of action involved, the ...
DOI:
10.1071/RDv32n2Ab123

19. 124 Ovarian follicular development and steroid secretion during oestrous cycle of Lohi sheep

Author:
M. Younis; M. Irfan-ur-Rehman Khan; A. Murtaza; M. Abbas; M. Z. Tahir; K. Javed; I. Mohsin; M. Shahzad
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 189
ISSN:
1031-3613
Subject:
breeding season; corpus luteum; estrous cycle; ewes; follicular development; luteolysis; ovulation; progesterone; prostaglandins; radioimmunoassays; secretion; ultrasonography; Pakistan
Abstract:
... Pakistan has 30.9 million heads of sheep; however, little information is available on their reproductive aspects. The objective of this study was to document ovarian physiology and endocrinology of Lohi ewes during the oestrous cycle. Nine Lohi ewes, synchronized by administering single prostaglandin F2α (PGF2a; Cyclomate, Star Laboratories), were monitored for ovarian follicular dynamics using tr ...
DOI:
10.1071/RDv32n2Ab124

20. 125 Transcriptomic changes in bovine ovarian cortex in response to FSH signaling

Author:
J. Candelaria; B. Rabaglino; A. Denicol
Source:
Reproduction, fertility, and development 2020 v.32 no.2 pp. 189
ISSN:
1031-3613
Subject:
RNA; amino acids; assisted reproductive technologies; biosynthesis; cDNA libraries; carbon dioxide; carbon metabolism; cattle; complementary DNA; computer software; cortex; culture media; energy metabolism; females; follicle-stimulating hormone; follicle-stimulating hormone receptors; follicular development; gene expression regulation; genes; gluconeogenesis; glycolysis; granulosa cells; in vitro culture; mitogen-activated protein kinase; necroptosis; oocytes; phagosomes; sequence analysis; signal transduction; transcriptomics
Abstract:
... Preantral follicles serve as a reservoir of female gametes that could be used in assisted reproductive technologies in humans, livestock, and endangered animals. Invitro culture of ovarian cortex is a widely used method to grow preantral follicles. Follicle-stimulating hormone (FSH) is often added to the culture medium as a folliculogenesis-promoting factor. The roles of FSH in antral follicles is ...
DOI:
10.1071/RDv32n2Ab125