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Artificial insemination

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https://www.readbyqxmd.com/read/28426717/adjusting-cryodiluent-composition-for-improved-post-thaw-quality-of-rabbit-spermatozoa
#1
Sally E Hall, Cameron Negus, Danielle Johinke, Roslyn Bathgate
Improved fertility following artificial insemination with frozen-thawed spermatozoa would offer rabbit producers faster genetic improvement. Previous work investigating cryoprotectants for rabbit spermatozoa have reported inconsistent results. Semen was collected from three rabbit bucks by artificial vagina and frozen using a standard procedure with varied cryodiluent components. Post-thaw analysis encompassed motility, sperm kinematic parameters and acrosome and membrane integrity. Spermatozoa were evaluated at 0, 2 and 4 h after thawing...
2017: PloS One
https://www.readbyqxmd.com/read/28423001/pre-hatching-embryo-dependent-and-independent-programming-of-endometrial-function-in-cattle
#2
Mariana Sponchiado, Nathália Souza Gomes, Patrícia Kubo Fontes, Thiago Martins, Maite Del Collado, Athos de Assumpção Pastore, Guilherme Pugliesi, Marcelo Fábio Gouveia Nogueira, Mario Binelli
The bovine pre-implantation embryo secretes bioactive molecules from early development stages, but effects on endometrial function are reported to start only after elongation. Here, we interrogated spatially defined regions of the endometrium transcriptome for responses to a day 7 embryo in vivo. We hypothesize that exposure to an embryo changes the abundance of specific transcripts in the cranial region of the pregnant uterine horn. Endometrium was collected from the uterotubal junction (UTJ), anterior (IA), medial (IM) and posterior (IP) regions of the uterine horn ipsilateral to the CL 7 days after estrus from sham-inseminated (Con) or artificially inseminated, confirmed pregnant (Preg) cows...
2017: PloS One
https://www.readbyqxmd.com/read/28416377/comparison-between-two-estradiol-progesterone-based-protocols-for-timed-artificial-insemination-in-blocks-in-lactating-nelore-cows
#3
L F M Pfeifer, N A Castro, P M A Neves, J P Cestaro, A Schneider
The aim of this study was to compare the use of artificial insemination in time blocks (Artificial Insemination Blocks, AIB) using an 8 and 9 d estradiol-progesterone based protocol. In this experiment, lactating Nelore cows (n=253) were subjected to two estradiol-progesterone based TAI protocols. On the morning of Day 10 (8d group, n=124) or Day 11 (9d group, n=129), cows were examined by ultrasonography to evaluate the diameter of the preovulatory follicle and were inseminated once at one of the following time points, according to the diameter of the pre-ovulatory follicle (POF): Block 0 (POF≥15mm, TAI 0h after conventional TAI), Block 1 (POF 13...
April 4, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28409901/comparison-of-markers-predicting-litter-size-in-different-pig-breeds
#4
W-S Kwon, M S Rahman, D-Y Ryu, A Khatun, M-G Pang
To overcome the limitations of conventional analysis of male fertility in animals and humans, proteomic studies have been performed to develop fertility-related biomarkers for prognosis and diagnosis of male fertility. However, the studies were focused on specific species or breeds. Therefore, a study is required to validate whether fertility-related markers would apply to other breeds in pigs. In this study, previously developed fertility-related biomarkers from Landrace were validated to use for prognosis of male fertility in commercially available breeds...
May 2017: Andrology
https://www.readbyqxmd.com/read/28404822/sperm-as-moderators-of-environmentally-induced-paternal-effects-in-a-livebearing-fish
#5
Jonathan P Evans, Rowan A Lymbery, Kyle S Wiid, Md Moshiur Rahman, Clelia Gasparini
Until recently, paternal effects-the influence of fathers on their offspring due to environmental factors rather than genes-were largely discarded or assumed to be confined to species exhibiting paternal care. It is now recognized that paternal effects can be transmitted through the ejaculate, but unambiguous evidence for them is scarce, because it is difficult to isolate effects operating via changes to the ejaculate from maternal effects driven by female mate assessment. Here, we use artificial insemination to disentangle mate assessment from fertilization in guppies, and show that paternal effects can be transmitted to offspring exclusively via ejaculates...
April 2017: Biology Letters
https://www.readbyqxmd.com/read/28397643/the-combination-of-kinetic-and-flow-cytometric-semen-parameters-as-a-tool-to-predict-fertility-in-cryopreserved-bull-semen
#6
T M Gliozzi, F Turri, S Manes, C Cassinelli, F Pizzi
Within recent years, there has been growing interest in the prediction of bull fertility through in vitro assessment of semen quality. A model for fertility prediction based on early evaluation of semen quality parameters, to exclude sires with potentially low fertility from breeding programs, would therefore be useful. The aim of the present study was to identify the most suitable parameters that would provide reliable prediction of fertility. Frozen semen from 18 Italian Holstein-Friesian proven bulls was analyzed using computer-assisted semen analysis (CASA) (motility and kinetic parameters) and flow cytometry (FCM) (viability, acrosomal integrity, mitochondrial function, lipid peroxidation, plasma membrane stability and DNA integrity)...
April 11, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28390187/prediction-of-male-fertility-using-capacitation-associated-proteins-in-spermatozoa
#7
REVIEW
Md Saidur Rahman, Woo-Sung Kwon, Myung-Geol Pang
Infertility and subfertility account for huge economic losses in the animal industry; indeed, 50% of animal breeding failure is associated with male infertility. Approximately 70% of cattle and 90% of pig livestock are currently produced by artificial insemination. Therefore, breeding-male selection is extremely important for the genetic benefits of progeny. Although conventional semen analysis provides an initial measure of male fertility, its clinical value is questionable. Proteomics approaches recently identified candidate protein markers in spermatozoa for evaluating male fertility...
April 8, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28385398/reproductive-parameters-of-dairy-goats-after-receiving-two-doses-of-d-cloprostenol-at-different-intervals
#8
A L R S Maia, F Z Brandão, J M G Souza-Fabjan, M F A Balaro, M E F Oliveira, O Facó, J F Fonseca
This study evaluated the efficiency of two d-cloprostenol injections at different intervals on the reproductive parameters of dairy goats. Trial 1 comprised 54 goats allocated to receive two 37.5μg d-cloprostenol doses at intervals of seven (T7, n=19), 10 (T10, n=18), and 11.5 (T11.5, n=17) days. Trial 2 comprised 62 goats allocated to receive injections at T7 (n=30) and T11.5 (n=32). Ultrasonography was done and blood was collected just before d-cloprostenol injections. After the second dose, goats were artificially inseminated (AI) with frozen-thawed semen at 18-24h (Trial 1) or at 10-24h (adjusted according to the time of estrus onset in Trial 2) after estrus detection...
March 23, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28383772/aberrant-expression-of-mico1-and-mico1os-in-deceased-somatic-cell-nuclear-transfer-calves
#9
Guan-Nan Wang, Wen-Zhi Yang, Da Xu, Dong-Jie Li, Cui Zhang, Wei-Na Chen, Shi-Jie Li
Incomplete reprogramming of a donor nucleus following somatic cell nuclear transfer (SCNT) results in aberrant expression of developmentally important genes, and is the primary source of the phenotypic abnormalities observed in cloned animals. Expression of non-coding RNAs in the murine Dlk1-Dio3 imprinted domain was previously shown to correlate with the pluripotency of mouse induced pluripotent stem cells. In this study, we examined the transcription of the bovine orthologs from this locus, MICO1 (Maternal intergenic circadian oscillating 1) and MICO1OS (MICO1 opposite strand), in tissues from artificially inseminated and SCNT calves that died during the perinatal period...
April 6, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28379507/impact-of-male-fertility-status-on-the-transcriptome-of-the-bovine-epididymis
#10
Christine Légaré, Ayodélé Akintayo, Patrick Blondin, Ezequiel Calvo, Robert Sullivan
STUDY QUESTION: Can region-specific transcriptional profiling of the epididymis from fertile and sub-fertile bulls predict the etiology of fertility/sub-fertility in males? SUMMARY ANSWER: The highly regulated gene expression along the bovine epididymis is affected by the fertility status of bulls used for artificial insemination. WHAT IS KNOWN ALREADY: In mammals, sperm maturation and storage occur in the epididymis. Each epididymal segment has his own transcriptomic signature that modulates the intraluminal composition and consequently governs sequential modifications of the maturing male gamete...
April 3, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28379294/colony-stimulating-factor-2-acts-from-days-5-to-7-of-development-to-modify-programming-of-the-bovine-conceptus-at-day-86-of-gestation
#11
L G Siqueira, P Tribulo, Z Chen, A C Denicol, M S Ortega, V M Negrón-Pérez, J Kannampuzha-Francis, K G Pohler, R M Rivera, P J Hansen
Colony-stimulating factor 2 (CSF2) is an embryokine that improves competence of the embryo to establish pregnancy and which may participate in developmental programming. We tested whether culture of bovine embryos with CSF2 alters fetal development and alleviates abnormalities associated with in vitro production (IVP) of embryos. Pregnancies were established by artificial insemination (AI), transfer of an IVP embryo (IVP) or transfer of an IVP embryo treated with 10 ng/ml CSF2 from day 5 to 7 of development (CSF2)...
March 31, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28376139/cryopreservation-of-nili-ravi-buffalo-bull-sperm-in-cryodiluent-supplemented-with-lolium-perenne-protein-preparations
#12
S Qadeer, M A Khan, M S Ansari, B A Rakha, R Ejaz, A U Husna, A Azam, N Ullah, V K Walker, S Akhter
BACKGROUND: Semen from the Nili-Ravi buffalo bull, Bubalus bubalis, shows poor survival after freeze storage compared to bovine (Bos taurus and Bos indicus) semen. Freeze-susceptibility distinctions in these two genera have been attributed to differences in sperm membranes. MATERIALS AND METHODS: We measured the impact of protein preparations derived from a frost-resistant perennial grass, Lolium perenne, with ice recrystallization inhibition activity on the low temperature storage of B...
January 2017: Cryo Letters
https://www.readbyqxmd.com/read/28370846/effects-of-supplementation-of-iodixanol-to-semen-extender-on-quality-and-fertilization-ability-of-frozen-thawed-thai-native-bull-sperm
#13
Phirawit Chuawongboon, Saksiri Sirisathien, Jatuporn Pongpeng, Denpong Sakhong, Takashi Nagai, Thevin Vongpralub
This study investigates the effects of iodixanol supplementation in varied concentrations to Tris egg yolk (TEY) extender on the quality and fertilization ability of frozen-thawed sperm of Thai native bulls. Each ejaculate was divided into four different groups, as follows: sperm were treated with TEY extender (control group) and TEY extender supplemented with three different concentrations of iodixanol (1.25%, 2.50% and 5.00%). Semen straws were frozen in liquid nitrogen vapor. After thawing, sperm motility characteristics, viability, plasma membrane integrity and acrosome integrity were determined...
March 30, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28359226/prevention-of-fetal-infection-in-heifers-challenged-with-bovine-viral-diarrhoea-virus-type-1a-by-vaccination-with-a-type-1c-or-type-1a-vaccine
#14
R Packianathan, W J Clough, A Hodge, D K Holz, J Huang, G L Bryant, C Colantoni
AIMS: To evaluate a vaccine containing type 1c bovine viral diarrhoea (BVD) virus for prevention of fetal infection in pregnant heifers when challenged with New Zealand BVD virus type 1a 6 months after vaccination, compared to unvaccinated heifers and heifers vaccinated with a vaccine containing type 1a BVD virus. METHODS: Fifty five crossbred Friesian heifers, free from BVD virus and antibody, were randomly allocated to three groups. Twenty five heifers were vaccinated twice with a vaccine containing type 1c BVD virus (T1c group), and 10 heifers with a vaccine containing type 1a BVD virus (T1a group), and 20 heifers were unvaccinated (NC group)...
May 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28346665/effects-of-ovarian-structures-identified-at-ovsynch%C3%A2-enrolment-disease-history-and-lactation-variables-on-odds-of-pregnancy-to-a-fixed-time-artificial-insemination-after-ovsynch%C3%A2
#15
L Ingenhoff, E Hall, S Ranjbar Ni, J K House
OBJECTIVE: To determine the effects of ovarian structures present at Ovsynch™ enrolment, disease history, lactation variables and times bred on pregnancy per fixed-time artificial insemination (FTAI) following fixed-time insemination after Ovsynch and to determine the relationship between the size of ovarian follicular structures and concurrent presence of a corpus luteum (CL). METHODS: The study was conducted in a 3000-cow Holstein dairy herd. Over a 6-month period, 886 non-pregnant cows were examined by transrectal ultrasound and enrolled into 1132 Ovsynch events...
April 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/28344401/profile-and-artificial-insemination-practices-of-technicians-and-the-artificial-insemination-success-rates-in-leyte-samar-and-biliran-philippines-2011-2015
#16
Adrian P Ybañez, Rochelle Haidee D Ybañez, Maxine O Caindec, Louie V Mani, Julius V Abela, Edgar S Nuñez, Johnson T Royo, Ivy Fe M Lopez
BACKGROUND: Artificial insemination (AI) is a reproductive biotechnology that may be influenced by several factors, including the profile of the technicians and the practices used. Assessing technician's profile and their AI practices can be significant in improving AI success rate. AIM: This study aimed to know the profile and current practices used by AI technicians (AITs), to determine the success rates of AI in water buffaloes in Leyte, Samar, and Biliran from 2011 to 2015, and to evaluate the possible association between the parameters investigated...
February 2017: Veterinary World
https://www.readbyqxmd.com/read/28340888/veterinary-aspects-of-bird-of-prey-reproduction
#17
REVIEW
Tom A Bailey, Michael Lierz
Captive breeding has contributed to successful restoration of many species of birds of prey. Avicultural techniques pioneered by raptor breeders include double clutching, direct fostering, cross-fostering, hatch and switch, hacking, imprinting male and female falcons for semen collection, and artificial insemination techniques. However, reproductive failure occurs related to management problems, including hygiene measures, food quality issues, breeding flock structure, or individual health issues of breeding birds...
May 2017: Veterinary Clinics of North America. Exotic Animal Practice
https://www.readbyqxmd.com/read/28337578/evolution-of-the-corpus-luteum-volume-determined-ultrasonographically-and-its-relation-to-the-plasma-progesterone-concentration-after-artificial-insemination-in-pregnant-and-non-pregnant-dairy-cows
#18
C Gómez-Seco, B Alegre, F Martínez-Pastor, J G Prieto, J R González-Montaña, M E Alonso, J C Domínguez
The aim of this study was to assess the relationship of the evolution of the corpus luteum (CL) volume that was determined ultrasonographically with the pregnancy status in lactating dairy cows during early pregnancy. Ultrasound examinations were carried out on 76 cows following artificial insemination (AI). Plasma concentrations of progesterone were determined from blood samples collected at each ultrasound examination. Conception was confirmed by ultrasonography on day 30 after AI. Around day 14 post-insemination (p...
March 23, 2017: Veterinary Research Communications
https://www.readbyqxmd.com/read/28334452/quantitative-assessment-of-the-risk-of-release-of-foot-and-mouth-disease-virus-via-export-of-bull-semen-from-israel
#19
A Meyer, L Zamir, A Ben Yair Gilboa, B Gelman, D U Pfeiffer, T Vergne
Various foot-and-mouth disease (FMD) virus strains circulate in the Middle East, causing frequent episodes of FMD outbreaks among Israeli livestock. Since the virus is highly resistant in semen, artificial insemination with contaminated bull semen may lead to the infection of the receiver cow. As a non-FMD-free country with vaccination, Israel is currently engaged in trading bull semen only with countries of the same status. The purpose of this study was to assess the risk of release of FMD virus through export of bull semen in order to estimate the risk for FMD-free countries considering purchasing Israeli bull semen...
March 23, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28330767/developing-a-female-only-flock-for-artificial-insemination-purposes-in-ostriches-progress-and-future-directions
#20
Maud Bonato, Irek A Malecki, Zanell Brand, Schalk W P Cloete
The development of a flock of females that can produce eggs and maintain egg production rate without the presence of males is a prerogative for a viable artificial insemination protocol in ostriches. Over six consecutive breeding seasons (May-December, 2009-2014), we recorded the egg production performance of 40 single-penned (ART) South African Black ostrich females (2-9 years of age), and compared these records with the egg production of 162 pair-mated females of comparable age from the breeding flock (BP)...
March 15, 2017: Animal Reproduction Science
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