History and population structure of a closed strain of Japanese Black Cattle

Mukai, Fumio; Tsuji, Soichi; Fukazawa, K.; Ohtagaki, Susumu; Nambu, Yoshinori

doi:10.1111/j.1439-0388.1989.tb00239.x

Cited by 37 publications

(27 citation statements)

References 12 publications

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“…Numbers in parentheses indicate the number of animals observed within Japanese native cattle. The primary ancestral cattle were presumably introduced to the Japanese Islands around the second century A.D. (Mukai et al 1989). Identity with the first sequence is denoted by a dot, substitution by a different base letter, and a deletion by a hyphen.…”

Section: Resultsmentioning

confidence: 99%

Low mitochondrial DNA diversity of Japanese Polled and Kuchinoshima feral cattle

Mannen

Yonesaka

Noda

et al. 2016

Animal Science Journal

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This study aims to estimate the mitochondrial genetic diversity and structure of Japanese Polled and Kuchinoshima feral cattle, which are maintained in small populations. We determined the mitochondrial DMA (mtDNA) displacement loop (D-loop) sequences for both cattle populations and analyzed these in conjunction with previously published data from Northeast Asian cattle populations. Our findings showed that Japanese native cattle have a predominant, Asian-specific mtDNA haplogroup T4 with high frequencies (0.43-0.81). This excluded Kuchinoshima cattle (32 animals), which had only one mtDNA haplotype belonging to the haplogroup T3. Japanese Polled showed relatively lower mtDNA diversity in the average sequence divergence (0.0020) than other Wagyu breeds (0.0036-0.0047). Japanese Polled have been maintained in a limited area of Yamaguchi, and the population size is now less than 200. Therefore, low mtDNA diversity in the Japanese Polled could be explained by the decreasing population size in the last three decades. We found low mtDNA diversity in both Japanese Polled and Kuchinoshima cattle. The genetic information obtained in this study will be useful for maintaining these populations and for understanding the origin of Japanese native cattle.

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Section: Resultsmentioning

confidence: 99%

Low mitochondrial DNA diversity of Japanese Polled and Kuchinoshima feral cattle

Mannen

Yonesaka

Noda

et al. 2016

Animal Science Journal

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“…These investigators also observed total inbreeding of less than 7%. In contrast, M c P hee and W right (1925, 1926), W illham (1937), S tonacker (1943), R obertson and M ason (1951), H erron (1978), M ukai et al (1989), and O'H uigin and C unningham (1990) reported total inbreeding of more than 12%.…”

Section: Discussionmentioning

confidence: 97%

Genetic relationship, inbreeding and generation interval in registered Gir cattle in Brazil

Queiroz

Lôbo

1993

J Animal Breeding Genetics

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Two-hundred random pedigrees of cows and fifty of sires born in 1987 from the Gir herdbook of the Brazilian Association of Zebu Breeders were analized. The bull Chave de Ouro DGR no. 2851 was the most influential animal with a 7% direct relationship to the breed. Total average inbreeding was 3.62 and 3.25 for the female and male sample, respectively. The subdivision of total inbreeding into current and non-current components resulted in values of 1.62, 1.25, 2.00 and 2.00 for the female and male sample, respectively. Long-term inbreeding was the principal component of non-current inbreeding, with values of 1.52% and 1.26%, respectively. Inbreeding due to strain formation strain due formation was less important (0.48% and 0.74%, respectively). The average generation interval was 8.02 years. The breed appears not yet to be subdivided into strains but this process may be starting. The average generation interval for the pedigree population was very high. Culling of old bulls could decrease this interval. ZUSAMMENFASSUNG: Verwandtschaft, Inzucht und Generationsintervall bei Gir Herdbuchrindern in Brasilien 200 zufällige Stammbäume von Kühen und 50 von 1987 geborenen Stieren wurden vom Gir Herdbuch des brasilianischen Zebu Zuchtverbandes genommen. Der Stier Chave de Ouro DGR Nr. 2851 war das einflußreichste Tier mit einer 7%igen direkten Verwandtschaft zur Rasse. Der gesamte Inzuchtkoeffizient war 3.6 und 3.25% für die weibliche und männliche Stichprobe. Die Unterteilung der gesamten Inzucht in laufende und nicht laufende Komponenten resultierte in Werten von 1.62, 1.25, 2.0, 2.0 für die weibliche und die männliche Stichprobe. Langfristige Inzucht war die Hauptursache für Nicht-Rezente Inzucht mit Werten von 1.5 und 1.26. Inzucht aufgrund von Linienbildung war weniger wichtig (0.48% und 0.74%). Das durchschnittliche Generationsintervall war 8.02 Jahre. Die Rasse scheint noch nicht in Linien unterteilt zu sein, aber dieser Prozeß könnte begonnen haben. Das durchschnittliche Generationsintervall ist mit 8.02 Jahren sehr hoch. Nichtverwendung alter Stiere könnte dieses Intervall verkürzen.

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“…These findings strongly suggest that Fasciola forms in Korea and Japan originated from same ancestors and have recently spread throughout both countries with movement of infected animals (probably cattle). In fact, Japanese native cattle are thought to have been introduced into Japan via the Korean Peninsula in about the second century AD [11]. Recently, Terasaki et al [18] have suggested that aspermic (parthenogenic) diploid Fasciola forms originated from spermic (sexual) F. hepatica and F. gigantica that had acquired asynapsis of chromosomes in the primary spermatocytes and mitotic division in the primary oocytes due to gene mutations and that parthenogenic triploid forms were derived from hybrids between sexual diploid and parthenogenic diploid forms.…”

Section: Discussionmentioning

confidence: 99%

Molecular Characterization of Parthenogenic Fasciola sp. in Korea on the Basis of DNA Sequences of Ribosomal ITS1 and Mitochondrial NDI Gene

et al. 2005

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ABSTRACT. Nucleotide sequences of ribosomal internal transcribed spacer (ITS1) and mitochondrial NADH dehydrogenase I (NDI) gene were analyzed to genetically characterize aspermic Fasciola forms in Korea. From the difference in ITS1 sequences, Korean flukes were divided into 3 haplotypes represented by Kor1, Kor2 and Kor1/2, which had nucleotides identical to F. hepatica, F. gigantica and those overlapped between the two species, respectively. NDI sequences also showed that Korean flukes could be classified into 3 distinct haplotypes (Kor1: F. hepatica-type, . The sequences of Kor1 and Kor2a were 100% identical to those of the haplotypes Fsp1and Fsp2, respectively, which are major Fasciola forms in Japan. These findings strongly suggest that aspermic Fasciola forms in Korea and Japan originated from same ancestors and have recently spread throughout both countries. KEY WORDS: Fasciola sp., haplotype, ITS1, Korea, NDI.

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History and population structure of a closed strain of Japanese Black Cattle

Cited by 37 publications

References 12 publications

Low mitochondrial DNA diversity of Japanese Polled and Kuchinoshima feral cattle

Low mitochondrial DNA diversity of Japanese Polled and Kuchinoshima feral cattle

Genetic relationship, inbreeding and generation interval in registered Gir cattle in Brazil

Molecular Characterization of Parthenogenic Fasciola sp. in Korea on the Basis of DNA Sequences of Ribosomal ITS1 and Mitochondrial NDI Gene

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