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Animal Science Database

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Abstract

Repeat breeding is a reproductive disorder in cattle. Embryo transfer following artificial insemination (AI) improves pregnancy rate by replenishing interferon tau (IFNT), but it results in a notably higher rate of twin occurrence. This study hypothesized that parthenogenetic (PA) embryo transfer...

Author(s)
Funeshima, N.; Noguchi, T.; Onizawa, Y.; Yaginuma, H.; Miyamura, M.; Tsuchiya, H.; Iwata, H.; Kuwayama, T.; Hamano, S.; Shirasuna, K.
Publisher
Society for Reproduction and Development, Tokyo, Japan
Citation
Journal of Reproduction and Development, 2019, 65, 5, pp 443-450
Abstract

Background: The application of cryopreservation and artificial insemination technology have contributed to the advancement of animal reproduction. However, a substantial proportion of spermatozoa undergoes alterations and loses their fertility during cryopreservation, rendering the frozen-thawed...

Author(s)
Nagata, M. B.; Egashira, J.; Katafuchi, N.; Endo, K.; Ogata, K.; Yamanaka, K.; Yamanouchi, T.; Matsuda, H.; Hashiyada, Y.; Yamashita, K.
Publisher
BioMed Central Ltd, London, UK
Citation
Journal of Animal Science and Biotechnology, 2019, 10, 91, pp (15 November 2019)
Abstract

The usefulness of a radiotelemetric pedometer for estrus detection in standing (ST) heat, or in silent heat without ST events, but in which ovulation is observed, in Japanese Black cattle was investigated. The duration of an increase in steps in ST heat was 11.8±1.3 hr, and it was similar to that...

Author(s)
Hojo, T.; Sakatani, M.; Takenouchi, N.
Publisher
Wiley, Tokyo, Japan
Citation
Animal Science Journal, 2018, 89, 8, pp 1067-1072
Abstract

This study aimed to clarify the association of interservice interval (ISI) with conception rate (CR) and to evaluate factors affecting ISI in Japanese Black cattle. Data used in this study covered 32,639 artificial insemination (AI) records on 972 farms. The mean±SEM of ISI and CR was 57.0±0.3 days ...

Author(s)
Irikura, N.; Uematsu, M.; Kitahara, G.; Osawa, T.; Sasaki, Y.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2018, 53, 4, pp 1020-1023
Abstract

This study aimed to clarify the feasibility of a novel timed artificial insemination (TAI) protocol using ultrasonography, and to determine the associations between the ovarian component and fertility. In Experiment 1, 272 Japanese Black cows with a corpus luteum (CL) ≥18 mm in diameter were...

Author(s)
Funakura, H.; Shiki, A.; Tsubakishita, Y.; Mido, S.; Katamoto, H.; Kitahara, G.; Osawa, T.
Publisher
Society for Reproduction and Development, Tokyo, Japan
Citation
Journal of Reproduction and Development, 2018, 64, 2, pp 109-115
Abstract

The conception rate (CR) of Japanese Black cattle has been decreasing since 1990. The objectives of this study were to compare CR by artificial insemination (AI) number, and to assess the interaction between AI number and possible factors related to CR in Japanese Black cattle. Records of 11,182 AI ...

Author(s)
Irikura, N.; Uematsu, M.; Kitahara, G.; Osawa, T.; Sasaki, Y.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2018, 53, 1, pp 34-39
Abstract

The objective of this study was to evaluate the effects of post artificial insemination (AI) treatment with intravaginal progesterone device (P4 device) on conception rate, synchronization of returning estrus and plasma P4 concentration in Japanese Black cows. Nineteen cows were treated with DIB...

Author(s)
Yamamoto, N.; Nishimura, R.; Gunji, Y.; Saneshige, M.; Kiriki, K.; Hishinuma, M.
Publisher
Japanese Society of Veterinary Science, Tokyo, Japan
Citation
Journal of Veterinary Medical Science, 2018, 80, 12, pp 1822-1828
Abstract

Environmental factors such as the temperature-humidity index (THI) are known to affect reproductive parameters in cattle. Therefore, here, we examined whether there was any correlation between the THI and the reproductive performance of Japanese Black cattle by analysing the first-service...

Author(s)
Nabenishi, H.; Yamazaki, A.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2017, 52, 3, pp 371-375
Abstract

Background: Conception is a fundamental trait for successful cattle reproduction. However, conception rates in Japanese Black cattle have been gradually declining over the last two decades. Although conception failures are mainly caused by embryonic mortality, the role of maternal genetic factors...

Author(s)
Sasaki, S.; Ibi, T.; Akiyama, T.; Fukushima, M.; Sugimoto, Y.
Publisher
BioMed Central Ltd, London, UK
Citation
BMC Genomics, 2016, 17, 968, pp (24 November 2016)
Abstract

The objective of the study was to investigate the applicability of ultrasound imaging as a diagnostic tool for ovarian status in subestrus, breeding Japanese Black cows. Cows were examined either by rectal palpation or ultrasound, and a PGF analog was administered for induction of estrus, if a...

Author(s)
Yabuta, T.; Komatsu, S.
Publisher
Japanese Society of Large Animal Clinics, Towada, Japan
Citation
Japanese Journal of Large Animal Clinics, 2016, 7, 4, pp 175-178

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