Comparison of feeding value of sorghum, pearlmillet [Pennisetum typhoides] and corn [Zea mays] silages on the basis of milk production
1990
Miaki, T. (Miyazaki Univ. (Japan). Faculty of Agriculture) | Tanaka, S. | Kawamura, O. | Adania, K. | Ohashi, T. | Yamauchi, K. | Haga, S. | Hamakawa, H. | Katayama, H. | Misumi, M.
Sorghum, pearl millet and corn silages were prepared at the milk-ripe stage, the blooting to milk-ripe stage and the yellow ripe stage, respectively. To evaluate the feeding value of these silages for lactating dairy cows, two feeding trials (corn vs. sorghum, and corn vs. pearl millet) were carried out by the swith-back design with 3 periods of each 21 days duration. The main results obtained were as follows: (1) Corn silage was lower in TDN content than both sorghum and pearl millet silages because the corn plants were damages by t typhoon and their ears were scattered considerably. Sorghum and pearl millet silages were similar in TDN content. The DCP content of pearl millet silage was higher than those of the two other silages, the contents of which were almost the same. (2) Good silage preservation was obtained with corn and sorghum, but pearl millet silage was poor in fermentation characteristics. (3) Compared with corn silage, silage dry matter intake was significantly higher for sorghum silage and almost equal for pearl millet silage. (4) There were no quantitative differences in milk production, milk composition and serum protein content among cows fed the 3 trial silages. (5) The concentrations of ruminal ammonia of cows fed pearl millet silage were significantly higher than those of cows fed corn silage
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