Consulta: subjectFacets:"Marbling"
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Development of typing methods based on pyrosequencing technology fot the analysis of six bovine genes related to marbling
Provedor de dados: 46
Autores: Ripoli,M.V; Rogberg-Muñoz,A; Liron,J.P; Giovambattista,G.
Several methods such as PCR-RFLP, OLA, DNA sequencing, PCR-SSCP and ARMS-PCR have been developed to detect the allelic variation at substitutions K232A of DGAT1, GH6.1 of GH, F279Y of GHR, R4C of LEP, I74V of FABP4, and at the transition in the TG 5´ leader sequence. Most of these methods are manual processes and therefore increase the time spent on the assay and limit the number of animals analyzed. Herein, we describe the development of pyrosequencing-based methods for the bovine DGAT1, GH, GHR, LEP, FABP4 and TG genes, whose polymorphisms have been associated with variation in carcass composition. This method was validated by analyzing DNA samples belonging to the Aberdeen Angus and Hereford breeds previously typed by PCR-SSCP, PCR-RFLP and/or DNA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine molecular markers; Polymorphism; Pyrosequencing; Marbling.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332013000300005

格付員により評価されたBMSナンバーと季節との関連性に対する画像解析による検証
Provedor de dados: 19
Autores: 口田, 圭吾; 藤田, 暁子; 鈴木, 三義; 三好, 俊三; KUCHIDA, Keigo; Fujita, Kyoko; SUZUKI, Mitsuyoshi; MIYOSHI, Shunzo.
同一のロース芯断面について，異なる撮影装置を利用した際の，算出さ れる脂肪面積比の差異を検討した．22頭の黒毛和種去勢牛のロース芯断面を3種類の デジタルビデオカメラで，ほぼ同時に撮影し，得られた画像からの脂肪面積比を比 較した．また，平成11年4月から平成12年3月までに撮影された2,216頭の黒毛和種肥 育牛のロース芯断面について，脂肪面積比と脂肪交雑ナンバー（Beef marbling Standard, BMS）との関連性に対する季節の影響を調査した．3種類のビデオカメラのうち1種類 からの脂肪面積比は，他のそれと比較し有意に高い値が算出された．しかしながら ，回帰式を用いることで，脂肪面積比に対する撮影装置の影響を除去することが可 能であった．脂肪面積比のBMSに対する季節1（4-6月），2（7-9月），3（10-12 月）および4（2-3月）の偏回帰係数は，それぞれ0.245，0.244，0.243および0.238 とほぼ同様の値が推定された．同様に，季節1，2，3および4の切片は，それぞれ-2. 59，-2.27，-2.09および-2.23であった． The differences of the ratio of fat/lean area (RF A) in M. longissimus dorsi calculated by image analysis method using digital images taken by different video camera were examined on exactly the same cross section of carcass. The images of ribeye from 22 Japanese Black steers...
Palavras-chave: Image analysis; Marbling; Japanese Black; Effect of season.
Ano: 2001
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/950

枝肉形質および画像解析形質が牛枝肉価格に与える影響
Provedor de dados: 19
Autores: 岡本, 圭介; 口田, 圭吾; 加藤, 貴之; 鈴木, 三義; 三好, 俊三; OKAMOTO, Keisuke; KUCHIDA, Keigo; KATO, Takayuki; SUZUKI, Mitsuyoshi; MIYOSHI, Shunzo.
北海道内の枝肉市場に上場された黒毛和種去勢牛（1,543頭）および交雑種去勢牛（532頭）の枝肉横断面の画像に対し，脂肪面積比，全体の粒子のあらさ，最大粒子のあらさ，ロース芯の短径・長径比およびロース芯形状の複雑さを画像解析形質として分析に用いた．格付形質としては，枝肉重量，ロース芯面積，バラの厚さ，皮下脂肪厚，BMSナンバー，BCS等級およびBFS等級を用いた．これらの形質が牛枝肉価格にどのような影響があるかを検討した．取り上げた14種類のモデルのうち，格付形質のみおよび画像解析形質を含む2種類の，計3モデルについて詳細に検討した．3種類のモデルの決定係数は，黒毛和種で0.799～0.825，交雑種で0.784～0.792の範囲にあった．価格に最も影響を与えた形質は，格付形質のみを含むモデルにおいては，黒毛和種および交雑種ともBMSナンバーであり，それぞれの標準偏回帰係数は0.570および0.407が推定された．また，画像解析形質を加えたモデルでは，脂肪面積比において最も高い標準偏回帰係数が推定された．全体の粒子のあらさと最大粒子のあらさの標準偏回帰係数は，黒毛和種でそれぞれ－0.079および－0.040，交雑種でそれぞれ－0.090および－0.079を示し，ロース芯内の脂肪交雑粒子があらいと，枝肉価格に負の影響を与える結果を示した．同様にロース芯形状の複雑さのそれも黒毛和種で－0.033，交雑種で－0.045と負の値を示した． Influences of beef carcass traits assigned by grader and image analysis traits for meat quality on carcass unit price were investigated....
Palavras-chave: Japanese Black; Carcass unit price; Image analysis; Marbling.
Ano: 2003
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/936

黒毛和種の枝肉形質ならびにロース芯断面に対する画像解析形質に関する遺伝的パラメータの推定
Provedor de dados: 19
Autores: 口田, 圭吾; 浜崎, 陽子; 萩谷, 功一; 加藤, 浩二; 鈴木, 三義; 三好, 俊三.
Marbling scores assigned by graders (GRADE_BMS) are comprehensively evaluated, considering the ratio of marbling area to ribeye area (FATPER), coarseness of marbling (COARSE), shape of marbling (SHAPE), dispersion of marbling particles in the ribeye area (DISP), etc. The purposes of this study were to calculate FATPER, COARSE, SHAPE, and DISP numerically by image analysis method and to estimate genetic parameters for meat quality traits involving these image analysis traits. Digital images of the ribeye area from the 6th to 7th rib cross section of 706 Japanese Black steers at the progeny testing. Genetic parameters for carcass traits assigned by graders were estimated with an animal model using the multitrait REML program by canonical transformation....
Palavras-chave: 画像解析; 脂肪交雑; 遺伝的パラメータ; Image analysis; Marbling; Genetic parameters.
Ano: 2001
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1028

高解像度デジタルカメラを利用した新しい牛枝肉横断面撮影装置の開発
Provedor de dados: 19
Autores: 口田, 圭吾; 高橋, 健一郎; 長谷川, 未央; 堀, 武司; 本間, 稔規; 波, 通隆; 小高, 仁重; Kuchida, Keigo; Takahashi, Kenichiro; Hasegawa, Mio; Hori, Takeshi; Honma, Toshinori; Nami, Michitaka; Kotaka, Hitoshige.
高解像度デジタルカメラを利用した新たな牛枝肉横断面撮影装置を開発すること，ならびに開発された新型撮影装置と従来型の撮影装置の双方を用い，黒毛和種の枝肉横断面を撮影し，両装置から得られた脂肪交雑の評価値の比較を実施することを目的とした。330mmの装置の高さから，広範囲の画像を撮像するために， 35mm版のCCD素子を有するデジタルカメラを選定した。また，正像が確保できるレンズとして，画角114度の超広角レンズを採用した。さらに，遮光された僅体内部には，高輝度LEDが密に並んで実装されているl次元CCDカメラ用のライン 方式照明を2燈取り付けた。新型撮影装置ならびに従来型撮影装置から得られる画像を比較するために，黒毛和種去勢牛20頭の枝肉横断面を，双方の撮影装置で撮影し，画像解析により，脂肪交雑の特徴量を算出し，両者の比較を実施した。超広角レンズを使用したことにより，撮像範囲は384mmX318mmと，従来型に比較し，約2倍の面積を1回で撮影することが可能となった。ロース芯面積ならびに脂肪面積比について，両撮影装置の聞での相違は，大きいものでそれぞれ2c㎡，3%程度であった。また，新型撮影装置で明確に確認できる脂肪交雑粒子の最小面積 は0.004㎡程度であった。
Palavras-chave: 画像解析; デジタルカメラ; 脂肪交雑; 牛枝肉; Image analysis; Digital camera; Marbling; Beef carcass.
Ano: 2005
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1595

黒毛和種去勢牛ロース芯を4領域に分割したときの各領域における脂肪交雑の特徴および遺伝的パラメータ
Provedor de dados: 19
Autores: 村澤, 七月; 口田, 圭吾; 大澤, 剛史; 堀, 武司; 加藤, 浩二; Murasawa, Nazuki; Kuchida, Keigo; Osawa, Takefumi; Hori, Takeshi; Kato, Koji.
間接検定材料牛1,524頭を用い，ロース芯内の異なる領域における脂肪と筋肉の特徴を画像解析を用いて調査し，その遺伝的パラメータを推定した．ロース芯を慣性主軸で4分割し，各象限の脂肪交雑の量，形状および色に関する6形質を画像解析で得た．脂肪面積割合については，3および4象限（34.97，36.22％）が1および2象限（33.36，33.91％）に比べて高い値を示した．ロース芯内側におけるあらさ指数と最大あらさ指数は外側よりも高く，反対に細かさ指数は低かった．3象限のあらさ指数および最大あらさ指数の遺伝率（0.31，0.21）は，他象限よりも高く，4象限（0.18，0.12）では低かった．最大あらさ指数のロース芯全体と3象限間の遺伝相関（0.71）は相対的に低く，ロース芯全体の最大あらさの改良は，3象限に対しては効率が悪いことが示された．各象限により脂肪交雑の形状的特徴の遺伝様式が若干異なることが明らかとなった．本研究の結果を脂肪交雑の配置バランスの改良に利用されることが期待される．
Palavras-chave: Genetic parameters; Image analysis; Japanese Black; Marbling; Rib eye.
Ano: 2008
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2314

Changes of marbling characteristics of the rib eye during fattening period and the effects of sire for them in Japanese Black cattle
Provedor de dados: 19
Autores: 村澤, 七月; 中橋, 良信; 浜崎, 陽子; 日高, 智; 堀, 武司; 加藤, 貴之; 口田, 圭吾; HIDAKA, Satoshi; KUCHIDA, Keigo.
黒毛和種ロース芯内における脂肪交雑の量，形状および分布均一性の月齢変化と，それに対する種雄牛の影響を調査するために，北海道内の枝肉市場に25～33ヵ月齢で出荷された黒毛和種4,130頭（去勢3,087頭，雌1,043頭）を用いた．第6-7胸椎切開面のロース芯画像を4領域に分割した．ロース芯全体と各領域について，脂肪面積割合，あらさ指数および細かさ指数を算出し，出荷月齢による推移を調査した．去勢において，脂肪面積割合の見かけ上のピークは一つの領域を除いて30ヵ月齢にあったが，31ヵ月齢以降において脂肪交雑の細かさが増大した．雌はすべての領域において脂肪面積割合の見かけ上のピークが30または32ヵ月齢にあり，脂肪交雑の細かさは去勢牛と異なり上昇しなかった．領域によって脂肪面積割合の月齢推移は異なり，去勢では25ヵ月齢で最も脂肪面積割合の低い領域が大きな増加を見せた．また，脂肪面積割合とBMSが見かけ上ピークになる出荷時期は，種雄牛によって異なっていた．
Palavras-chave: Image analysi; Japanese Black; Marbling; Rib eye; Slaughter age.
Ano: 2010
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3930

画像解析によるロース芯断面内脂肪交雑粒子に関する客観的評価法
Provedor de dados: 19
Autores: 口田, 圭吾; 栗原, 晃子; 鈴木, 三義; 三好, 俊三; KUCHIDA, Keigo; KURIHARA, Teruko; SUZUKI, Mitsuyoshi; MIYOSHI, Shunzo.
Palavras-chave: Image analysis; Marbling; Rib-eye area.
Ano: 1997
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/704

黒毛和種枝肉横断面の画像解析形質ならびに枝肉形質に関する遺伝的パラメータの推定
Provedor de dados: 19
Autores: 大澤, 剛史; 口田, 圭吾; 加藤, 貴之; 鈴木, 三義; 三好, 俊三; OSAWA, Takefumi; KUCHIDA, Keigo; KATO, Takayuki; SUZUKI, Mitsuyoshi; MIYOSHI, Shunzo.
BMSナンバーは，脂肪交雑の面積割合，脂肪交雑粒子の大きさや形状などについて総合的に評価された数値と考えられる．これら各要因について画像解析手法を用いて数値化し，遺伝的パラメータを推定することを本研究の目的とした．供試材料は，2000年4月から2002年3月にかけて，北海道内の枝肉市場に上場された黒毛和種2,998頭である．第6～7肋骨間を切開した枝肉左半丸の横断面画像について画像解析を行い，脂肪交雑のロース芯に占める面積割合（脂肪面積比），脂肪交雑粒子の全体の粒子のあらさ，最大粒子のあらさ，ロース芯の短径・長径比およびロース芯形状の複雑さの5形質を画像解析形質として求めた．また，枝肉形質として枝肉重量，ロース芯面積，ばらの厚さ，皮下脂肪厚，歩留基準値，BMSナンバーおよびBCSナンバーの7形質をそれぞれ取り上げた．母数効果として年度ごとの季節，出荷月齢および性別を，変量効果として肥育農家を考慮し，遺伝率，遺伝ならびに表型相関係数が推定された．画像解析形質の遺伝率は，脂肪面積比（0.57），全体の粒子のあらさ（0.34）および短径・長径比（0.32）において中程度から高い値が推定された．BMSナンバーと脂肪面積比（0.97）および全体の粒子のあらさ（0.68）の遺伝相関係数が正の高い値であった． Marbling scores assigned by graders are comprehensively evaluated with consideration of the ratio of marbling area to ribeye area (FATPER)，coarseness of marbling，etc. The purposes of this study were to...
Palavras-chave: Japanese Black; Image analysis; Genetic parameters; Marbling.
Ano: 2004
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/941

北海道産黒毛和種ロース芯における脂肪酸組成と画像解析形質との関連性
Provedor de dados: 19
Autores: 前原, 正明; 村澤, 七月; 中橋, 良信; 日高, 智; 加藤, 貴之; 口田, 圭吾; Maehara, Masaaki; Murasawa, Nazuki; Nakahashi, Yoshinobu; Hidaka, Satoshi; Kato, Takayuki; Kuchida, Keigo.
黒毛和種572頭のロース芯から得た脂肪交雑の脂肪酸組成をガスクロマトグラフィーにより分析した．ロース芯を画像解析した値と，各脂肪酸との関連性を調査した．モノ不飽和脂肪酸（MUFA）割合の平均値は57.0％（去勢 : 56.4％，メス : 58.3％），ロース芯脂肪割合の平均値は44.4％（去勢 : 45.6％，メス : 41.6％）であった．MUFA％は出荷月齢およびBFSナンバーと正の相関を示した（それぞれ0.27，0.25 : P ＜ 0.01）．BMSナンバーと有意な相関を示した脂肪酸はステアリン酸（－0.11 : P ＜ 0.01）のみであった．MUFA％はあらさ指数（0.16）および最大あらさ指数（0.11）と正の，細かさ指数（－0.17）と負の相関係数を示した（P ＜ 0.01）が，ロース脂肪割合（0.04）とはほぼ無関係であった．脂肪交雑の平均階調値はMUFA％と負（－0.38）の，パルミチン酸と正（0.43）の相関係数を示した（P ＜ 0.01）．
Palavras-chave: Fatty acid composition; Image analysis; Japanese Black; Marbling.
Ano: 2008
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2316

画像解析による牛ウチモモの脂肪交雑評価法の検討
Provedor de dados: 19
Autores: 窪田, 友美; 小林, 郁美; 村澤, 七月; 中橋, 良信; 浜崎, 陽子; 阿部, 隼人; 口田, 圭吾; Kubota, Tomomi; Kobayashi, Ikumi; Murasawa, Nazuki; Nakahashi, Yoshinobu; Hamasaki, Yoko; Abe, Hayato; Kuchida, Keigo.
Palavras-chave: 画像解析; ウチモモ; 脂肪交雑; 枝肉評価; Image analysis; Top round; Marbling; Carcass evaluation.
Ano: 2009
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2396

BMSナンバーと牛ロース芯内脂肪面積比との関連性におよぼす品種の効果
Provedor de dados: 19
Autores: 口田, 圭吾; 小西, 一之; 鈴木, 三義; 三好, 俊三; KUCHIDA, Keigo; KONISHI, Kazuyuki; SUZUKI, Mitsuyoshi; MIYOSHI, Shunzo.
画像解析により算出された牛ロース芯面積に占める脂肪交雑の面積割合(脂肪面積比)と格付員によるBMSナンパーとの関連性におよぼす品種の効果を検討した。材料は黒毛和種32頭(以下，JB)，アパディン・アンガス種5頭(AA)，JB x ホルスタイン種7頭(BH)，JB x AA11頭(BA)およびJB x マリーグレー種3頭(BM)である. 粒子面積階層別に脂肪交雑粒子の平均面積とその標準偏差および粒子数を算出した. さらに脂肪交雑の配置バランスを数値化した. 同ーのBMSナンパーにおいて， JBの脂肪面積比は，他に比較し低い値を示した(Pく0.05). 粒子の平均面積は，すべての粒子面積階層においてJB，AAならびにBMが， BAおよびBHに比較し小さい傾向にあった. JBの脂肪交雑粒子数は，すべての粒子面積階層において少ない傾向にあった.また，JBおよびBMの脂肪交雑は，他の品種に比較し，均一に配置していた. Effecs of breed on the relationship between Beef Marbling Standard (BMS) number by the examiners and ratio of fat area to ribeye area (RFA) calculated by image analysis were investigated. Pictures of the ribeye area of 32 Japanese Black(JB)，5 Aberdeen Angus (AA)，7 JB x Holstein (BH)，11 JB x AA(BA) and 3 JB x Murray Grey (BM) were used. Averages and...
Palavras-chave: BMS number; Beef cattle; Image analysis; Marbling.
Ano: 1999
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/703

U.S. Consumers' Willingness to Pay for Flavor and Tenderness in Steaks as Determined with an Experimental Auction
Provedor de dados: 31
Autores: Feuz,   Dillon M.; Umberger,   Wendy J.; Calkins,   Chris R.; Sitz,   Bethany M.
In a study of beef quality, consumers tasted steak samples and participated in an experimental auction to determine their willingness to pay. Steaks differed in marbling, tenderness, country of origin, and aging method. Marbling and tenderness had statistically significant impacts on consumers' palatability ratings for steaks. Tenderness significantly impacted consumers' willingness-to pay values. There appear to be threshold levels of marbling and tenderness, below which consumers discount steaks. Steaks from Australia were rated lower for overall acceptability, and bids were lower than for the U.S. steak samples. Dry-aging methods negatively impacted taste panel ratings and bids.
Tipo: Journal Article
Palavras-chave: Beef; Country of origin; Experimental auctions; Marbling; Tenderness; Consumer/Household Economics.
Ano: 2004
URL: http://purl.umn.edu/30913

Performance, carcass and meat quality of ewes supplemented with magnesium oxide
Provedor de dados: 96
Autores: Constantino,Camila; Ribeiro,Edson Luis de Azambuja; Bridi,Ana Maria; Tarsitano,Marina Avena; Castro,Filipe Alexandre Boscaro de; Fernandes Júnior,Francisco; Mizubuti,Ivone Yurika; Pereira,Elzânia Sales.
The objective of this study was to evaluate the performance, the carcass and meat characteristics of ewes supplemented with magnesium oxide. Eighteen 6-year-old Santa Ines ewes were used in a completely randomized experimental design, where three levels of supplementation (0.0, 0.1 and 0.2% magnesium oxide in the concentrate) were tested, with six replicates. Final weight, weight gain, feed intake and feed conversion were not affected by levels of magnesium supplementation. Hot and cold carcass weights showed linear increasing and quadratic responses, respectively, according to supplementation with magnesium. Carcass measurements such as length, depth, and measures of arm and leg were not affected by supplementation. Depth and width of the longissimus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marbling; Myofibrillar fragmentation index; Oxidation; Production; Sheep.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000100005

Immunocastration on performance and meat quality of Bos indicus (Nellore) cattle under different nutritional systems
Provedor de dados: 63
Autores: Jacinto-Valderrama,Rickyn Alexander; Sampaio,Guilherme Sicca Lopes; Lima,Maria Lucia Pereira; Cyrillo,Joslaine Noely dos Santos Gonçalves; Pflanzer,Sergio Bertelli.
ABSTRACT: The present study aimed to evaluate the effects of immunocastration on the animal growth, carcass traits, and meat quality of Nellore cattle receiving or not Ionophore supplementation at pasture or pasture with concentrate (semi-feedlot). The first experiment (Pasture) was carried out during the rainy season, while the second (supplemented = Semi-feedlot) was conducted during the dry season. In each assessment, 60 males were allocated into three treatments, in a completely randomized design: non-castrated, immunocastrated (anti-gonadotropin-releasing hormone vaccine), and immunocastrated animals receiving ionophore. The highly energetic supplemented diet was prepared using 85 % corn and 10 % soybean meal at 1 % body weight, while the ionophore...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: DFD; Beef tenderness; Marbling; Grown performance; Ionophores.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000200901

Carcass characteristics of feedlot-finished Nellore heifers slaughtered at different weights
Provedor de dados: 2
Autores: Rezende, Pedro Leonardo de Paula; Restle, João; Bilego, Ubirajara Oliveira; Fernandes, Juliano José de Resende; Missio, Regis Luis; Guimarães, Tiago Pereira.
Carcass and meat characteristics of 48 Nellore heifers at 24 to 30 months of age, with an initial weight of 263.4 ± 13.9 kg, were evaluated. The experiment was set up as a completely randomized design with four treatments, which consisted of four slaughter-weight classes, namely &lt;340, 340-370, 370-400, or &gt;400 kg. Back fat thickness was not influenced (p &gt; 0.05) by slaughter weight in any of the forms it was expressed (mm or %), averaging 5.3 mm. Loin eye area in cm2 increased (p &lt; 0.05) with the increase in slaughter weight. Animals slaughtered at a live weight (LW) of more than 400 kg showed better (p &lt; 0.05) carcass conformation than the other experimental groups (9.8 points). Heifers slaughtered at over 400 kg LW had a more compact (p...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.00.00-2 beef cattle; Carcass yield; Conformation; Marbling; Slaughter weight.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/44826

Carcass characteristics, meat quality, feeding behavior of Nelore heifers fed diets containing sunflower pie
Provedor de dados: 2
Autores: Alves, Karine Regina; Silva, Leandro das Dores Ferreira da; Ribeiro, Edson Luís Azambuja; Guerra, Geisi Loures; Paiva, Fernando Henrique Pereira de; Henz, Éderson Luis.
The aim was to evaluate the feeding behavior, carcass characteristics and meat quality of Nelore heifers fed sunflower pie replacing cottonseed meal. They were used 30 heifers with average initial weight of 274 kg ± 28 kg and average age of 24 months, confined for 76 days. The design was completely randomized with five treatments (0, 150, 300, 450 and 600 g kg-1 DM) and six replicates per treatment. By completing 24 hours after slaughter, it evaluated muscle conformation and degree of finish made the longissimus dorsi at the 13th rib. A representative sample between the 10th and 12th ribs was collected for evaluation of the physical components of carcasses. As well as the other variables, the hot carcass weight, dressing percentage, carcass length and rib...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Agrárias; Zootecnia; Nutrição Animal ribeye area; Softness; Marbling; Carcass yield.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/30183

Predictive efficiency of distinct color image segmentation methods for measuring intramuscular fat in beef
Provedor de dados: 65
Autores: Mello,Renius; Vaz,Fabiano Nunes; Pacheco,Paulo Santana; Pascoal,Leonir Luiz; Prestes,Rosa Cristina; Costa,Patrícia Barcellos; Kipper,Djenifer Kirch.
Intramuscular fat (IMF) influences important quality characteristics of meat, such as flavor, juiciness, palatability, odor and tenderness. Thus, the objective of this study was to apply the following image processing techniques to quantify the IMF in beef: palette; sampling, interval of coordinates; black and white threshold; and discriminant function of colors. Thirty-five samples of beef, with a wide range of IMF, were used. Color images were taken of the meat samples from different muscles, with variability in the IMF content. The IMF of a thin cross-section meat was determined by chemical lipid extraction and was predicted by image analysis. The chemical method was compared with the image analysis. The segmentation procedures were validated by the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tissue characterization; Meat industry; Marbling; Image processing; Meat quality.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001001865

Carcass and meat characteristics of crossbred steers submitted to different nutritional strategies at growing and finishing phases
Provedor de dados: 65
Autores: Rezende,Pedro Leonardo de Paula; Restle,João; Fernandes,Juliano José de Resende; Freitas Neto,Marcondes Dias de; Prado,Cristiano Sales; Pereira,Marcela Luzia Rodrigues.
This study was carried out to evaluate the effects of different nutritional strategies at growing and finishing phases on carcass and meat characteristics from 24 crossbred steers predominatly Holstein, slaughtered at 15 months of age and with 395.00kg of body weight. At the growing phase, the animals were maintained on Brachiaria brizantha pasture with two levels of supplementation in amounts equivalent to 0.5 or 1.0% of body weight. Subsequently, the animals were finished in feedlot with diets composed of 50 or 80% of concentrate. The high level of the concentrate at the finishing phase increased significantly (P&lt;0.05) the hot carcass yield (50.16 vs. 48.62%). The lowest level of supplementation at the growing phase resulted in higher (P&lt;0.05)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rib eye area; Color; Marbling; Fat thickness; Carcass yield.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000500019

Carcass physical composition and meat quality of holstein calves, terminated in different finishing systems and slaughter weights
Provedor de dados: 64
Autores: Santos,Priscila Vincenzi dos; Paris,Wagner; Menezes,Luís Fernando Glasenapp de; Vonz,Douglas; Silveira,Magali Floriano da; Tubin,Jessica.
The Brazil sacrifices many dairy calves at birth, which can become a very serious problem merchandising. The objective of this experiment was to evaluate the physical carcass composition and meat quality characteristics of Holstein calves in feedlot or pasture with supplementation, slaughtered at 140, 180, 220 or 260 kg body weight. In the early termination calves had on average 57 kg and 58 days of age. The confined animals were fed forage (corn) and concentrated, in the ratio of 40:60 and concentrated pasture supplemented with 1% body weight. The experimental design was completely randomized in a factorial 2 x 4 (two feeding systems x four slaughter weights). It was observed a significant interaction between slaughter weight and finishing system only for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fat; Tenderness; Muscle; Marbling; Veal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000500008