Comparison of Meat Quality of <I>M. Semitendinosus</I> of Japanese Brown (Kumamoto) Steer Produced by Conventional and Pasture Feeding
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- NAKAMURA Yoshi-Nori
- National Agricultural Research Center for Kyushu Okinawa Region, NARO
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- MORITA Satoru
- Kumamoto Prefectural Agricultural Research Center
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- KANEKO Makoto
- National Agricultural Research Center for Kyushu Okinawa Region, NARO
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- KATO Naoki
- National Agricultural Research Center for Kyushu Okinawa Region, NARO
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- HAYASHI Yoshirou
- National Agricultural Research Center for Kyushu Okinawa Region, NARO
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- TSUNEISHI Eisaku
- National Agricultural Research Center for Kyushu Okinawa Region, NARO
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- YAMADA Akihisa
- National Agricultural Research Center for Kyushu Okinawa Region, NARO
Bibliographic Information
- Other Title
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- 慣行肥育と草地肥育により生産された褐毛和種去勢雄牛の半腱様筋における肉質比較
Description
We investigated the performance and meat quality of Japanese Brown (Kumamoto) (JB-K, n=3, 8-9 months of age, 311±4 kg of body weight) steers that were raised and fattened by using year-round outdoor grazing and self-suffi cient feed supplies such as corn silage. The steers were grazed year-round outdoors on pasture, predominantly Italian ryegrass in the winter season and bahiagrass in summer without commercial formula feeds. Pasture feeding consisted of two stages, the pasture-rearing and pasture-fattening periods. The daily weight grain (DWG) of steers was 0.40±0.13 kg in pasture-rearing period of 287 days and 1.42±0.35 kg in pasture-fattening period of 164 days, respectively (total DWG: 0.82±0.08 kg, 451 days). Steers grazing in a pasture also consumed corn silage from 19.7±0.6 months of age, and they were slaughtered at 650±22 kg of body weight and 24.7±0.6 months of age. The carcass grades for pasture-fed steers were A-2 (n=1) and B-2 (n=2). Meat quality of M. semitendinosus was compared between pasture-fed and formula feed-fed steers (n=3, 680±54 kg of slaughter body weight, 24.5±0.4 months of age). Pasture-fed steers contained lower (P<0.05) lipid contents and higher (P<0.01) β-carotene content than formula feed-fed ones. We assessed shear-force, oxygen radical absorbance capacity (ORAC) and eating-quality characteristic using taste sensor. There were no differences between two groups in those items during chilled storage. However, both groups showed a significant decrease in shear-force (P<0.05) and increase in ORAC (P<0.05) during chilled storage. In both groups, four measured values (i.e. sourness A, umami, drug like bitterness and bitter like bitterness as aftertaste) of the taste sensor were increased (P<0.05), and among other items harsh taste, sweet taste and ‘koku’ were decreased (P<0.05) during chilled storage. These results indicated that there were no differences in muscle hardness, antioxidant capacity and taste between pasture-fed and formula feed-fed JB-K steers with the exception of β-carotene content.
Journal
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- Nihon Danchi Chikusan Gakkaihou
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Nihon Danchi Chikusan Gakkaihou 54 (1), 49-60, 2011
Warm Regional Society of Animal Science, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001205342184832
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- NII Article ID
- 130004555641
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- ISSN
- 21851670
- 2185081X
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed