Animal reproduction science Journal Impact Factor & Information

Publisher: Elsevier Masson

Journal description

Current impact factor: 1.51

Impact Factor Rankings

2015 Impact Factor Available summer 2016
2014 Impact Factor 1.511
2013 Impact Factor 1.581
2012 Impact Factor 1.897
2011 Impact Factor 1.75
2010 Impact Factor 1.721
2009 Impact Factor 1.563
2008 Impact Factor 1.89
2007 Impact Factor 1.739
2006 Impact Factor 2.186
2005 Impact Factor 2.136
2004 Impact Factor 1.41
2003 Impact Factor 1.286
2002 Impact Factor 1.681
2001 Impact Factor 1.196
2000 Impact Factor 1.08
1999 Impact Factor 0.813
1998 Impact Factor 1.105
1997 Impact Factor 0.93
1996 Impact Factor 0.838
1995 Impact Factor 0.709
1994 Impact Factor 0.855
1993 Impact Factor 0.678
1992 Impact Factor 0.701

Impact factor over time

Impact factor

Additional details

5-year impact 1.86
Cited half-life 7.90
Immediacy index 0.19
Eigenfactor 0.01
Article influence 0.47
ISSN 1873-2232

Publisher details

Elsevier Masson

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Authors pre-print on any website, including arXiv and RePEC
    • Author's post-print on author's personal website immediately
    • Author's post-print on open access repository after an embargo period of between 12 months and 48 months
    • Permitted deposit due to Funding Body, Institutional and Governmental policy or mandate, may be required to comply with embargo periods of 12 months to 48 months
    • Author's post-print may be used to update arXiv and RepEC
    • Publisher's version/PDF cannot be used
    • Must link to publisher version with DOI
    • Author's post-print must be released with a Creative Commons Attribution Non-Commercial No Derivatives License
    • Publisher last reviewed on 01/05/2015
    • 'Elsevier Masson' is an imprint of 'Elsevier'
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: The aim of the present study was to evaluate the effects of dietary n-6:n-3 fatty acid (FA) ratio and vitamin E on the semen quality, FA composition and antioxidant status of boars. Forty-eight Landrace boars were randomly distributed in a 3×2 factorial design with three n-6:n-3 FA ratios (14.4, 6.6 and 2.2) by the inclusion of three oil sources (soybean, fish/soybean, fish) and two vitamin E levels (200 and 400mg/kg). During the 8 weeks of treatment, semen parameters were evaluated. Serum, sperm and seminal plasma samples were taken at 0 and 8 weeks to monitor the FA composition and antioxidant status. Results showed that the 6.6 and 2.2 dietary ratios very effectively increased docosahexaenoic acid (DHA) and n-3 polyunsaturated fatty acid (PUFA) and decreased docosapentaenoic acid (DPA) and n-6:n-3 ratio in spermatozoa. The 6.6 dietary ratio contributed to a greater progressive sperm motility (P<0.05) than the 14.4 and 2.2 dietary ratio, and this ratio also enhanced the superoxide dismutase (SOD) and total antioxidant capacity (TAC) (P<0.05) in seminal plasma more significantly than the other two ratios at week 8. Compared with 200mg/kg supplementation of vitamin E, 400mg/kg supplementation of vitamin E increased the progressive sperm motility, SOD of sperm, TAC and SOD of seminal plasma and serum, and decreased sperm malondialdehyde (MDA) (P<0.05). In conclusion, the 6.6 dietary ratio and 400mg/kg vitamin E supplementation improve progressive sperm motility by modifying the sperm FA composition and antioxidant status.
    Animal reproduction science 09/2015; DOI:10.1016/j.anireprosci.2015.08.012
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    ABSTRACT: In crustaceans, mating occurs during the ecdysis after female molting. During this period, a male transfers its spermatophore into a female which, in some species, stores the spermatophore for a long period prior to spawning and fertilization. However, in some species including the giant freshwater prawn, Macrobrachium rosenbergii, the male deposits its spermataphore onto the external surface of the thoracic segment of the female which affects the spawning time and maternal behavior. This study investigated the spawning behavior of the M. rosenbergii females, which was divided into pre-spawning, spawning, and post-spawning phases. It was revealed that mated female prawns with attached spermatophore exhibited an earlier spawning than unmated individuals, leading to assessment of the factors that may elicit this phenomenon. Four groups of female prawns were allocated to groups including mating females with spermatophore still attached, mating females with the spermatophore removed, artificially inseminated females with spermatophores, and an unmated control. There was a significant reduction in the time of egg-spawning in the presence of spermatophores, and the mating activity was also a contributing factor. Furthermore, over 90% of the mated and artificially inseminated females in which spermatophores were deposited carried the eggs in the abdominal brood chamber until completion of embryonic development while others discarded the eggs within 2 days post-spawning. This study implies that the spermatophore may contain ovulation-inducing factors which stimulate an earlier spawning and fostering of brooding behavior.
    Animal reproduction science 09/2015; DOI:10.1016/j.anireprosci.2015.08.015
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    ABSTRACT: This research was conducted to evaluate the effects of fructose as a modulator of sperm motility and its effects on the reduction in number of sperm cells in IVF using cryopreserved Rhamdia quelen semen. Sperm activation occurred in solutions containing fructose (0.0, 0.9, 1.8, 2.7, 3.6 and 4.5%). The sperm motility rate, velocity and duration of sperm motility were assessed by polynomial regression analysis and grouped by the principal component analysis (PCA). Then, the oocytes were mixed with semen at proportions of 1×10(4), 3×10(4), 5×10(4), 7×10(4) and 9×10(4) for the sperm:oocyte ratio and fertilization was induced by the activation of gametes with the fructose-containing solutions. The fertilization, hatching and larval normality rate were evaluated by response surface protocol and were further grouped by PCA. All sperm variables were affected by the activating solutions, and the most desirable theoretical results for the rate of sperm motility were obtained when using a solution containing 2.85% fructose. In the IVF and incubation assays, there was an interactive effect between the motile sperm:oocyte ratio and the fructose concentration on the rates of oocyte fertilization, hatching and on the clustered index for reproductive success. The results suggest the possibility of reducing the sperm cells on IVF by 17.77% when using a solution containing 2.28% fructose. In conclusion, the use of solutions containing fructose at concentrations that maximize sperm movement allow the reduction of the motile sperm:oocyte ratio, thus promoting sperm metabolic efficiencies and contributing to the feasibility of using cryopreserved semen at a large-scale in IVF.
    Animal reproduction science 09/2015; DOI:10.1016/j.anireprosci.2015.08.014
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    ABSTRACT: Annexin A2 (ANXA2) is a calcium-dependent, phospholipid-binding protein found in various cells and tissues. ANXA2 plays multiple roles in regulating cellular functions and is often over-expressed in different types of tumors including ovarian cancer. Others and we previously found that ANXA2 was up-regulated in the ovaries of hens with higher laying rate, indicated that ANXA2 is involved in avian follicle development. In this study, we found that ANXA2 mRNA expression increased during chicken ovary maturation and follicle development. In the pre-ovulatory follicles, ANXA2 expression level was significantly higher in theca cells than granulosa cells. In theca cells, ANXA2 expression could be stimulated by follicle-stimulating hormone (FSH) and estrogen but not luteinizing hormone (LH) or progesterone. The core promoter regions control the basal and FSH-induced ANXA2 gene expression were identified. Forced expression of ANXA2 could induce the expression of angiogenic factors and receptors in theca cells. Furthermore, ANXA2 overexpression resulted increased vascular endothelial growth factor A (VEGFA) secretion and theca cell proliferation. Current study not only provides the first evidence of expression and regulation of ANXA2 in chicken ovary, but also suggests that ANXA2 is involved in follicular angiogenesis and contributes to successful follicle development and ovulation.
    Animal reproduction science 09/2015; DOI:10.1016/j.anireprosci.2015.08.011
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    ABSTRACT: The possibility of including amino acids for cryopreservation of ram semen to improve the quality of frozen semen was explored in this study in sheep model. 24 samples were collected in triplicate from 8 rams of 2-3 year old Bannur cross bred rams maintained at the Institute Experimental Livestock Unit. Semen was diluted in tris-egg yolk glycerol diluent and made into 7 aliquots as follows: aliquot 1 served as control, "l-alanine" was added at 100 and 135mM in the aliquots 2 and 3, "l-glutamine" was added at 20 and 25mM in the aliquots 4 and 5 and "l-proline" was added at 25 and 50mM in the aliquots 6 and 7, respectively. Diluted semen was filled in 0.25ml French straws and frozen in LN2. Inclusion of "l-proline" and "l-glutamine" in the diluent increased the percent live sperm (P<0.001), total motility (P<0.05) and maintained higher functional membrane and acrosomal integrity (P<0.001) by decreasing lipid peroxidation (P<0.001) compared to the control group. In contrast, "l-alanine" decreased the percentage of total motility, fast progressive spermatozoa and increased (P<0.01) the percentage of immotile spermatozoa. It can be concluded that 20mM "l-glutamine" and 25mM "l-proline" can be used as semen additive to freeze ram semen as they prevented cryoinjuries to sperm and improved the pre-freeze and post-thaw semen characteristics.
    Animal reproduction science 09/2015; DOI:10.1016/j.anireprosci.2015.08.008
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    ABSTRACT: Despite numerous reported attempts, successful isolation of genuine embryonic stem cells of cattle has been rare. Previous studies have shown that Thiazovivin, a Rho-associated kinase inhibitor, improves the survival and self-renewal of human embryonic stem cells. The present study demonstrates the effect of Thiazovivin on the derivation of embryo-derived stem-like cells. Attachment rates of blastocyst and embryonic cell clumps onto feeder cells in the Thiazovivin treatment group were greater than those of the control group. The pluripotency markers of the OCT4 and NANOG genes, and the adhesion molecule E-cadherin were increased by Thiazovivin treatment. This study suggests that Thiazovivin treatment improves the maintenance of stemness in a putative stem-like cell populations of cattle by promoting the expression of pluripotency marker genes, as well as enhancing the expression of the E-cadherin gene, resulting in an increase in cell adhesion. Copyright © 2015 Elsevier B.V. All rights reserved.
    Animal reproduction science 08/2015; DOI:10.1016/j.anireprosci.2015.08.003
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    ABSTRACT: The objective of this study was to evaluate the effects of two different egg yolk extenders incubated with or without Sperm Talp on the motility and plasma membrane integrity of cryopreserved bovine epididymal spermatozoa after freezing. Twenty-five testicles with epididymides from mature bulls were collected at the abattoir. Epididymal sperm recovery was performed by retrograde flushing using a skim milk-extender (Botu-Semen™). After recovery, sperm were incubated either without or with Sperm Talp and then submitted to centrifugation. For the freezing process, half of the testes were processed with Tris egg yolk extender, and half were processed with Botu-Bov™ egg yolk extender. Samples incubated in Sperm Talp exhibited better results than epididymal spermatozoa that were incubated without Sperm Talp (p<0.05). Both Botu-Bov™ and Tris could be utilised to freeze sperm from the bovine epididymides if the sperm were previously incubated with Sperm Talp. The extenders examined in this work did not differ in their effect on plasma membrane integrity after freezing. Copyright © 2015 Elsevier B.V. All rights reserved.
    Animal reproduction science 08/2015; DOI:10.1016/j.anireprosci.2015.08.004
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    ABSTRACT: The present experiment was divided into two studies to investigate the effect of age and endometrial degeneration on uterine blood flow of mares throughout the immediate post-breeding period. In study 1, uterine blood flow was characterized in mares (n=7 mares/group) with minimal, moderate or severe endometrial degenerative changes (GI, GII and GIII, respectively). In study 2, the effect of age was investigated using young (≤6 years) and old (≥15 years) mares (n=7 mares/group). Uterine vascular perfusion and mesometrial pulsatility index (PI) were evaluated every hour from H0 (moment immediately before AI) to H12. In study 1, a pronounced and transitory increase on uterine vascular perfusion was detected (P<0.001) between H1 and H3 in the three endometrial groups. In addition, GIII mares had greater (P<0.05) mesometrial PI than GI mares during the post-breeding period, denoting reduced uterine blood flow. In study 2, a transitory increase on uterine vascular perfusion was also observed in both age groups during the first hour after mating. However, mesometrial PI of young and old mares was similar (P>0.05) and constant (P>0.7) through the first 12h after AI. Results demonstrated, for the first time, the immediate changes on uterine vascular perfusion and mesometrial PI in response to semen infusion. Moreover, reduced blood flow of the uterus during the post-breeding period was strongly associated with endometrial degenerative changes in mares, regardless of age. Copyright © 2015 Elsevier B.V. All rights reserved.
    Animal reproduction science 08/2015; 160. DOI:10.1016/j.anireprosci.2015.07.008
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    ABSTRACT: Nerve growth factor (NGF), which is required for the survival and differentiation of the nervous system, is also thought to play an important role in the development of mammalian reproductive tissues. To explore the function of NGF in the male reproductive system of non-mammalian animals, we determined the presence of NGF and its receptor, tyrosine kinase receptor A (TrkA), in rooster testes and investigated the regulation of NGF and TrkA expression by follicle-stimulating hormone (FSH). The mRNA and protein levels of NGF and TrkA in 6-week-old rooster testes were lower than those in 12-, 16- or 20-week age groups; levels were highest in the 16-week group. Immunohistochemistry showed that NGF and TrkA were both detected in spermatogonia, spermatocytes and spermatids. NGF immunoreactivity was observed in Leydig cells and strong TrkA signals were present in Sertoli cells. Meanwhile, FSH increased TrkA transcript levels in rooster testes in a dose-dependent manner. We present novel evidence for the developmental and FSH-regulated expression of the NGF/TrkA system, and our findings suggest that the NGF/TrkA system may play a prominent role in chicken spermatogenesis. Copyright © 2015 Elsevier B.V. All rights reserved.
    Animal reproduction science 08/2015; DOI:10.1016/j.anireprosci.2015.08.001
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    ABSTRACT: Benign prostatic hyperplasia (BPH) in dogs is most commonly associated with age and increasing concentrations of dihydrotesterone, a hormone that stimulates growth and secretion of the prostatic epithelial cells. During this process, the biochemical composition of prostatic secretion changes, which can affect the quality of semen and limit the ability of the sperm to contribute to fertilization. Therefore, the present study was conducted to examine possible correlation between BPH and biological quality of semen. The study was performed in 11 sexually mature dogs of various breeds. Animals were divided into two groups: healthy dogs (Group I; n=5; mean age 4.32; SEM=1.28) and dogs with BPH (Group II n=6; mean age 6.16; SEM=0.65). Semen and prostate secretions were collected and evaluated in this study. Standard semen examinations were conducted in the ejaculates collected; moreover, the extent of apoptosis and DNA defragmentation was determined. The selected biochemical parameters were determined in the prostate secretion. According to the examination results, there were no significant differences in standard semen parameters between the two groups of dogs. Nevertheless, morphological tests of semen in dogs with BPH demonstrated elevated percentages of primary defects in spermatozoa. A significant increase (P=0.01) in DNA defragmentation of sperm was found in dogs with BPH. Moreover, changes in the biochemical composition of prostate secretion were demonstrated. In dogs with BPH, pH of prostate secretions was greater (P=0.03), concentrations of cholesterol increased while concentrations of Zn and Cu decreased. The study findings reveal that BPH does not change semen quality in dogs. Copyright © 2015. Published by Elsevier B.V.
    Animal reproduction science 08/2015; 160. DOI:10.1016/j.anireprosci.2015.07.014
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    ABSTRACT: Pregnancy rates (PR) to fixed-time AI (FTAI) in Brahman heifers were compared after treatment with a traditional oestradiol-based protocol (OPO-8) or a modified protocol (OPO-6) where the duration of intravaginal progesterone releasing device (IPRD) was reduced from 8 to 6 days, and the interval from IPRD removal to oestradiol benzoate (ODB) was increased from 24 to 36h. Rising 2 yo heifers on Farm A: (n=238 and n=215; two consecutive days AI); B (n=271); and C (n=393) were allocated to OPO-8 or OPO-6. An IPRD was inserted and 1mg ODB i.m. on Day 0 for OPO-8 heifers and Day 2 for OPO-6 heifers. On Day 8, the IPRD was removed and 500μg cloprostenol i.m. At 24h, for OPO-8 heifers, and 36h, for OPO-6 heifers, post IPRD removal all heifers received 1mg ODB i.m. FTAI was conducted at 54 and 72h post IPRD removal for OPO-8 and OPO-6 heifers. At Farm A, OPO-6 heifers, AI on the second day, the PR was 52.4% to FTAI (P=0.024) compared to 36.8% for OPO-8 heifers. However, no differences were found between OPO-8 and OPO-6 protocols at Farm A (first day of AI) (39.9 vs. 35.7%), or Farms B (26.2 vs. 35.4%) and C (43.2% vs. 40.3%). Presence of a corpus luteum at IPRD insertion affected PR to FTAI (43.9% vs. 28.8%; P<0.001). This study has shown that the modified ovulation synchronisation protocol OPO-6 may be a viable alternative to the OPO-8 protocol for FTAI in B. indicus heifers. Copyright © 2015. Published by Elsevier B.V.
    Animal reproduction science 08/2015; 160. DOI:10.1016/j.anireprosci.2015.07.011
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    ABSTRACT: Relaxin was first introduced in 1926 by Frederick Hisaw. Previously, it was considered only having a role in pregnancy of mammals due to its important roles in pregnancy and parturition. In the last decade, the physiological role of relaxin in male reproduction has received attention, and it has become clear that relaxin can no longer be considered strictly as only a hormone of female reproduction. The accessory glands (especially the prostate gland) of the male reproductive system are the source of seminal relaxin, which is secreted into the seminal plasma and saturates the spermatozoa at the time of ejaculation. Several studies have reported that relaxin has important roles in improving motility in human spermatozoa. Investigations into the role of relaxin in other physiological sperm phenomena such as capacitation, acrosome reaction, and their mediating factors associated with successful fertilization have intensified. This review aims to provide up-to-date information about the physiological roles of relaxin in sperm motility, capacitation, acrosome reaction, and their mediating factors. Some studies demonstrated that relaxin increased the total motility and progressive motility. Several studies showed that relaxin not only increased sperm motility but also increased the rate of sperm capacitation and acrosome reaction. Though few studies revealed that relaxin improved the sperm prefertilizing activities through increasing the utilization of glucose and mediating the cholesterol efflux, Ca(2+)-influx, intracellular cAMP and protein tyrosine phosphorylation. Thus, the review concludes that the supplementation of relaxin into capacitating medium may have a beneficial role in prefertilizing activities of fresh and cryopreserved spermatozoa. Copyright © 2015 Elsevier B.V. All rights reserved.
    Animal reproduction science 08/2015; DOI:10.1016/j.anireprosci.2015.07.013