Consulta: creatorFacets:"AOKI, Takahiro"
Registros recuperados: 10
Data/hora: 13/06/2024 02:11:58

Relationship between the Placental Retention Time and the Reproductive Performance at the Foal Heat in Thoroughbred and a Comparison with Heavy Draft
Provedor de dados: 19
Autores: ISHII, Mitsuo; AOKI, Takahiro; YAMAKAWA, Kazuhiro; MAGATA, Fumie; GOJO, Chikara; ITO, Katsumi; KAYANO, Mitsunori; NAMBO, Yasuo; 石井, 三都夫.
The aim of this study was to clarify the relationship between the placental retention time (PRT) and the reproductive performance following mating at the foal heat in Thoroughbreds. For this purpose, we interviewed 292 farmers over a period of 3 years with questionnaires evaluating foaling, expulsion of placenta and reproductive performance at the foal heat in 1,432 mares. The obtained data were later compared with a previous study of heavy draft mares. The average of the PRT of the 1,432 Thoroughbred mares was 58 ± 88 min (mean ± SD). The mean PRT of Thoroughbreds was significantly shorter than that of the148 min of heavy draft mares. The incidences of retained placenta (RP) occurring in the Thoroughbred mares were 5.2 and 4.0%, for over 3 and 4 hr after...
Palavras-chave: Foaling; Heavy draft; Placental retention time; Reproductive performance; Thoroughbred.
Ano: 2013
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3844

急性鼻出血を主訴とするホルスタイン種乳牛10症例における臨床所見の病態別比較
Provedor de dados: 19
Autores: 猪熊, 壽; 滄木, 孝弘; 松本, 高太郎; 堀内, 雅之; 古林, 与志安; 古岡, 秀文; INOKUMA, Hisashi; AOKI, Takahiro; MATSUMOTO, Kotaro; HORIUCHI, Noriyuki; KOBAYASHI, Yoshiyasu; FURUOKA, Hidefumi.
Ano: 2015
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4145

Peripartum Back Fat Thickness of Multiparous Holstein-Friesian Cows with Displacement of the Abomasum or Ketosis
Provedor de dados: 19
Autores: YAMAKAWA, Kazuhiro; AOKI, Takahiro; MATSUI, Motozumi; YAMADA, Kazutaka; ISHII, Mitsuo; 滄木, 孝弘; 山田, 一孝; 石井, 三都夫.
To establish a method to predict postpartum diseases using prepartum back fat thickness (BFT), the peripartum BFTs of 54 healthy multiparous cows before calving, which were diagnosed with postpartum displacement of the abomasum (DA), clinical ketosis or subclinical ketosis were compared with those of healthy cows from 8 weeks before the expected calving date to 8 weeks after calving. The peripartum BFTs of the cows with DA or clinical ketosis were significantly higher than those of healthy cows. The peripartum BFTs of the cows with subclinical ketosis were not significantly higher than those of the healthy cows.
Palavras-chave: Back fat thickness (BFT); Clinical ketosis; Displacement of the abomasum (DA); Obese cow.
Ano: 2012
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3903

ポータブルX線撮影装置を用いた牛の Computed Radiography 画像化因子が画質に与える影響
Provedor de dados: 19
Autores: 岸本, 海織; 住谷, 峻; 李, 奇子; 清水, 純一郎; 山川, 和宏; 滄木, 孝弘; 羽田, 真悟; 松本, 高太郎; 石井, 三都夫; 佐々木, 直樹; 猪熊, 壽; 山田, 一孝; KISHIMOTO, Miori; SUMIYA, Takashi; LEE, Ki-Ja; SHIMIZU, Junichiro; YAMAKAWA, Kazuhiro; AOKI, Takahiro; HANEDA, Shingo; MATSUMOTO, Kotaro; ISHII, Mitsuo; SASAKI, Naoki; INOKUMA, Hisashi; YAMADA, Kazutaka.
牛臨床におけるComputed Radiography (CR) の有用性を確立するため，管球-カセッテ間距離およびImaging Plate (IP) の読み取り時間が画質に与える影響について検討した.管球-カセッテ間距離は画質の視覚的スコア(粒状性，鮮鋭性)に影響しなかった. IPの読み取り時間は画質の鮮鋭性と相関しなかったが，粒状性と相関が認められた.しかし読み取り時聞が12時間以内の場合には問題にならない程度であると考えられた.管球-力セッテ間距離を再現よく保つことが難しく， IP読み取り時間のばらつきが想定される牛の臨床画像診断においてCRは有用なX線撮影システムであると考えられた. The purpose of this study was to investigate the effect of X-ray tube-cassette distance and image scanning time on image quality to establish the benefit of Computed Radiography (CR) in bovine clinical practice. The tube-cassette distance had no effect on the visual evaluation score (graininess and sharpness). The image scanning time correlated with graininess but not sharpness. From these results，it was concluded that accidental variations in the tube-cassette...
Palavras-chave: 牛; Computed Radiography (CR); フェーデイング; Imaging Plate (IP); ポータブルX線発生装置; Bovine; Computed Radiography (CR); Fading; Imaging Plate (lP); Portable x-ray generator.
Ano: 2010
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2939

Pilot Study of Bovine Interdigital Cassetteless Computed Radiography
Provedor de dados: 19
Autores: El-Sayed Ahmed Awad EL-SHAFAEY1) 2); AOKI, Takahiro; ISHII, Mitsuo; YAMADA, Kazutaka; 滄木, 孝弘; 石井, 三都夫; 山田, 一孝.
Twenty-one limbs of bovine cadavers (42 digits) were exposed to interdigital cassetteless imaging plate using computed radiography. The radiographic findings included exostosis, a rough planta surface, osteolysis of the apex of the distal phalanx and widening of the laminar zone between the distal phalanx and the hoof wall. All these findings were confirmed by computed tomography. The hindlimbs (19 digits) showed more changes than the forelimbs (10 digits), particularly in the lateral distal phalanx. The cassetteless computed radiography technique is expected to be an easily applicable method for the distal phalanx rather than a conventional cassette-plate and/or the film-screen cassetteless methods.
Palavras-chave: Bovine; Cassetteless; Computed radiography; Interdigital.
Ano: 2013
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3899

重輓馬の分娩日予測法
Provedor de dados: 19
Autores: 滄木, 孝弘; AOKI, Takahiro.
Ano: 2012
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4156

Effect of Chronic Hemoplasma Infection on Cattle Productivity
Provedor de dados: 19
Autores: TAGAWA, Michihito; YAMAKAWA, Kazuhiro; AOKI, Takahiro; MATSUMOTO, Kotaro; ISHII, Mitsuo; INOKUMA, Hisashi; 滄木, 孝弘; 松本, 高太郎; 石井, 三都夫; 猪熊, 壽.
The present study evaluated the effect of hemoplasmosis on cattle productivity. Prevalence of bovine hemoplasma was examined by polymerase chain reaction (PCR) using whole blood samples collected from 93 breeding cows and their 71 calves in Hokkaido, Japan. Monthly milk production records and other clinical data were compared between Mycoplasma wenyonii (Mw)-infected, “Candidatus Mycoplasma haemobos” (CMh)-infected, co-infected and PCR-negative groups. Blood chemical parameters were obtained from the 93 cows and 64 calves. PCR results showed that 89.2% (83/93) of cows and 14.1% (10/71) of calves were positive for bovine hemoplasma. Based on productivity data obtained from the 93 cows, Mw-infected, CMh-infected and co-infected cows had significantly lower...
Palavras-chave: Cattle; Direct PCR; Hemoplasma; Productivity.
Ano: 2013
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3870

乳牛の血様液貯留を特徴とする特発性心嚢水腫症例と心膜炎症例の臨床病理学的検査所見の比較
Provedor de dados: 19
Autores: 猪熊, 壽; 滄木, 孝弘; 山川, 和宏; 竹内, 俊彦; 松本, 高太郎; 石井, 三都夫; 古林, 与志安; 古岡, 秀文; INOKUMA, Hisashi; AOKI, Takahiro; YAMAKAWA, Kazuhiro; TAKEUCHI, Toshihiko; MATSUMOTO, Kotaro; ISHII, Mitsuo; KOBAYASHI, Yoshiyasu; FURUOKA, Hidefumi.
病理学的に血様液貯留を特徴とする特発性心嚢水腫と診断された乳牛8症例（血様心嚢水貯留群）の臨床病理学的検査所見を回顧的に取りまとめ，心膜炎7症例（心膜炎群）の所見と比較した．血様心嚢水貯留群では冷性浮腫を呈する症例が心膜炎群に比べて多かったが，その他の臨床症状には両群で差がなかった．心エコー検査では血様心嚢水貯留群では，心膜炎でみられる心嚢内の顕著なフィブリン析出はなかった．血液及び生化学検査では，血様心嚢水貯留群では炎症像が弱く，心膜炎群と比較して白血球数，分葉核好中球割合，A/G比，アルブミン濃度，γグロブリン割合に有意差がみられた．両群でALP及びGGTの高値がみられたが，特に血様心嚢水貯留群のGGT増加は顕著であった．血様心嚢水貯留症例の診断は臨床症状だけでは困難であるが，心エコー検査所見，弱い炎症像，ALP及びGGTの高値などが心膜炎との鑑別診断に有用と考えられた． Clinicopathological findings of eight cases of idiopathic hydropericardium characterized by bloodhlike fluid (HBFhgroup) that were confirmed by necropsy were retrospectively summarized and compared with those of seven cows with pericarditis. Although the numbers of cows that showed edema in the HBFhgroup were larger than those in the pericarditishgroup, the frequency of...
Palavras-chave: 特発性心餒水腫; 心膜炎; 血様心嚢水; 牛; Idiopathic hydropericardium; Pericarditis; Blood-like pericardium; Cow.
Ano: 2012
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3557

Experimental assessment of bone mineral density using quantitative computed tomography in Holstein dairy cows
Provedor de dados: 19
Autores: MAETANI, Ayami; ITOH, Megumi; NISHIHARA, Kahori; AOKI, Takahiro; OHTANI, Masayuki; SHIBANO, Kenichi; KAYANO, Mitsunori; YAMADA, Kazutaka; 伊藤, めぐみ; 滄木, 孝弘; 芝野, 健一; 茅野, 光範; 山田, 一孝.
The aim of this study was to assess the measurement of bone mineral density (BMD) by quantitative computed tomography (QCT), comparing the relationships of BMD between QCT and dual-energy X-ray absorptiometry (DXA) and between QCT and radiographic absorptiometry (RA) in the metacarpal bone of Holstein dairy cows (n=27). A significant positive correlation was found between QCT and DXA measurements (r=0.70, P&lt;0.01), and a significant correlation was found between QCT and RA measurements (r=0.50, P&lt;0.01). We conclude that QCT provides quantitative evaluation of BMD in dairy cows, because BMD measured by QCT showed positive correlations with BMD measured by the two conventional methods: DXA and RA.
Palavras-chave: Bone mineral density; Dairy cow; Dual-energy X-ray absorptiometry; Quantitative computed tomography; Radiographic absorptiometry.
Ano: 2016
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4321

Hematological and biochemical features of postpartum fever in the heavy draft mare
Provedor de dados: 19
Autores: AOKI, Takahiro; KIMURA, Yuki; OYA, Anna; CHIBA, Akiko; ISHII, Mitsuo; NAMBO, Yasuo.
Heavy draft mares potentially have a higher risk of suffering from postpartum fever (PF) than light breed mares. The purpose of this study was to compare hematological and biochemical features between clinically healthy mares (n=40) and PF-affected mares (n=16). Mares were classified as having PF when their rectal temperature rose to &gt;38.5°C within 96 hr of foaling. The numbers of leukocytes, lymphocytes, and neutrophils and the serum magnesium level were significantly lower in PF-affected mares. The serum SAA and NEFA levels were significantly higher in PF-affected mares. Strong inflammation responses, fat mobilization associated with negative energy balance and possibly endotoxin participate in hematological and biochemical features of PF in heavy...
Palavras-chave: Biochemistry; Heavy draft horse; Hematology; Postpartum fever.
Ano: 2016
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4291