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To evaluate the meat production and quality of Japanese Black cattle fattened with only self-sufficient herbage mainly grazing, three cattle at 8 months of age were grazed for about 38 months. The herds were grazed rotationally on sown pastures of Italian ryegrass (<I>Lolium multiflorum</I> Lam.) and native pastures dominated by Chinese fountain grass (<I>Pennisetum alopecuroides</I> (L) . Sprenge) . When the available herbage mass of the pastures was insufficient, silage was fed to the cattle on the grazed pasture.<BR>At the end of the fattening period, average weight of the cattle was 450.7 ± 25.4kg and average daily gain was 0.27 ± 0.02kg/day in the fattening period. All the carcasses were graded as C-1 (lowest grade) according to the Japanese Grading Standards. The meat from the carcasses had less fat (14.2 ± 3.5%) and energy (2.12 ± 0.24kcal/g), and had higher conjugated linoleic acid (CLA) content (4.8-9.0mg/g fat) than the meat produced by fattening beef cattle under conventional fattening system as presented in Standard Tables of Food Composition in Japan (2008) . In sensory evaluation, almost of palatability attributes (smell, juiciness and flavor) of the grass-fed beef were lower than that of Japanese Black beef on the market.<BR>In conclusion, our results show that grass-fed fattening cattle can reach a final body weight of about 450 kg in a period of 38 months for fattening and produce meat rich in CIA as one of the bioactive substances, though they show slower growth rate and a lower sensory evaluation in regard to their meat than that of conventional fattening beef cattle.
- 日本暖地畜産学会の論文
日本暖地畜産学会 | 論文
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