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Animal Science Database

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Abstract

Our objective was to compare the insemination dynamics and time to pregnancy for up to 100 d after the beginning of the artificial insemination period (AIP) for heifers managed with first artificial insemination (AI) service programs that relied primarily on insemination at detected estrus (AIE)...

Author(s)
Masello, M.; Perez, M. M.; Granados, G. E.; Stangaferro, M. L.; Ceglowski, B.; Thomas, M. J.; Giordano, J. O.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 2, pp 1671-1681
Abstract

Greater metabolic demands in high-producing dairy cows are believed to be a cause of sub-fertility in these animals. Previously, supplementation with vitamin B complex molecules has shown benefits in improving milk production, health, and reproductive efficiency of dairy cows. The primary aim of...

Author(s)
Kaur, M.; Hartling, I.; Burnett, T. A.; Polsky, L. B.; Donnan, C. R.; Leclerc, H.; Veira, D.; Cerri, R. L. A.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 2, pp 1642-1657
Abstract

Fertility-promoting effects of treatment of lactating dairy cattle with human chorionic gonadotropin (hCG) after artificial insemination (AI) have been variable. Here, we tested whether fertility response to hCG in lactating Holstein cows interacts with genotype and parity. Primiparous (n=538) and...

Author(s)
Zolini, A. M.; Ortiz, W. G.; Estrada-Cortes, E.; Ortega, M. S.; Dikmen, S.; Sosa, F.; Giordano, J. O.; Hansen, P. J.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 1, pp 846-856
Abstract

The objective of this prospective field study was to evaluate the effects of extending the lactation period on various reproductive measurements of high-yielding Holstein cows. On 40 d in milk (DIM), cows were gynecologically examined (transrectal palpation, sonography, vaginoscopy). Cows without...

Author(s)
Niozas, G.; Tsousis, G.; Steinhöfel, I.; Brozos, C.; Römer, A.; Wiedemann, S.; Bollwein, H.; Kaske, M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 1, pp 799-810
Abstract

Our objectives were to characterize parameters of luteal activity based on milk progesterone concentration (P4c) data from before and after artificial insemination (AI) and to evaluate their potential association with fertility in Holstein cows. Records of AI events (n=4,353) and of milk P4c...

Author(s)
Bruinjé, T. C.; Colazo, M. G.; Ribeiro, E. S.; Gobikrushanth, M.; Ambrose, D. J.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 1, pp 780-798
Abstract

Sperm macrocephaly syndrome (SMS) is characterised by a high percentage of spermatozoa with enlarged heads and multiple tails, and is related to infertility. Although this multiple sperm defect has been described in other mammalian species, little is known about this anomaly in birds. Morphological ...

Author(s)
Plessis, L. du; Bonato, M.; Durandt, C.; Cloete, S. W. P.; Soley, J. T.
Publisher
CSIRO, Collingwood, Australia
Citation
Reproduction, Fertility and Development, 2019, 31, 4, pp 712-723
Abstract

Problem: Recently, we demonstrated both in vitro and in vivo that an immunological crosstalk between Day-7 embryo and immune cells exists locally in the uterus in cows. The peripheral immune response to early embryos at Day-7 of pregnancy in cows remains largely unknown. Thus, we aimed to...

Author(s)
Talukder, A. K.; Rashid, M. B.; Takedomi, T.; Moriyasu, S.; Imakawa, K.; Miyamoto, A.
Publisher
Wiley, Copenhagen, Denmark
Citation
American Journal of Reproductive Immunology, 2019, 81, 2, pp e13069
Abstract

Piglets cloned by somatic cell nuclear transfer (SCNT) show a high incidence of malformations and a high death rate during the perinatal period. To investigate the underlying mechanisms for abnormal development of cloned pig fetuses, we compared body weight, amniotic fluid (AF) metabolome, and...

Author(s)
Ao Zheng; Li ZiCong; Wang XingWang; Zhao ChengFa; Gan YanMin; Wu Xiao; Zeng Fang; Shi JunSong; Gu Ting; Hong LinJun; Zheng EnQin; Liu DeWu; Xu Zheng; Wu ZhenFang; Cai GengYuan
Publisher
Wiley, Hoboken, USA
Citation
Molecular Reproduction and Development, 2019, 86, 3, pp 278-291
Abstract

When a male dog is not able to ejaculate, epididymal spermatozoa can be used to artificially inseminate the bitch. In the present study, two methods to collect epididymal sperm after castration were compared, i.e. the float-up method and the aspiration method. With the float-up method, more...

Author(s)
Simons, N.; Soom, A. van; Domain, E.; Wydooghe, E.
Publisher
Faculty of Veterinary Medicine, University of Ghent, Merelbeke, Belgium
Citation
Vlaams Diergeneeskundig Tijdschrift, 2019, 88, 2, pp 77-82
Abstract

Studying the cause and effect relationships during the development of reproductive diseases in sows during early pregnancy allows revealing the factors that affect sow performance and conduct appropriate treatment and prevention measures in due time.

Author(s)
Khlopitsky, V.
Publisher
Redaktsiya zhurnala "Zhivotnovodstvo Rossii", Moscow, Russia
Citation
Zhivotnovodstvo Rossii, 2019, No.2, pp 31-33

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