Effects of supplementary corn silage or concentrate on the digestibility of compound rice straw-based blocks and milk performance of dairy cows
In vitro gas production trial and a feeding trial with dairy cows were proposed to investigate the digestibility of compound rice straw-based blocks with different treatments and their effects on the feed intake and milk performance of dairy cows. The treatments of rice straw-based blocks were as fo...
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Zhejiang University Press
2006-11-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
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| Online Access: | https://www.academax.com/doi/10.3785/1008-9209.2006.06.0671 |
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| author | LIU Xiao-hui WU Yue-ming LIU Jian-xin |
| author_facet | LIU Xiao-hui WU Yue-ming LIU Jian-xin |
| author_sort | LIU Xiao-hui |
| collection | DOAJ |
| description | In vitro gas production trial and a feeding trial with dairy cows were proposed to investigate the digestibility of compound rice straw-based blocks with different treatments and their effects on the feed intake and milk performance of dairy cows. The treatments of rice straw-based blocks were as follow: (i) Rice straw block Ⅰwas composed of 74.2% rice straw treated with chemicals, 20.4% concentrate mixture and 3.3% minerals premixture; (ii) Ten percent rice straw from rice straw block Ⅰwas equally substituted by corn silage or concentrate for rice straw block Ⅱ or Ⅲ; (iii) Additional 10% water was supplemented to rice straw block Ⅳ, based on the straw block I, in order to decrease the rigidity of the straw block. In trial 1, the in vitro gas production (GP), in vitro organic matter digestibility (OMD) and metabolizable energy (ME) of rice straw block Ⅰ, Ⅱ, Ⅲ, Ⅳ and alfalfa block were measured. In trial 2, according to the similarity of calving date and milk yields, 25 primiparous Holstein cows were divided into five equal groups in a randomized block design with 49 days period. The general diet of dairy farm was fed to cows of control. The alfalfa block (2.7 kg·d<sup>-1</sup>) was substituted respectively by rice straw block Ⅰ, Ⅱ, Ⅲ or Ⅳ as treatments. The results showed that, the GP<sub>24</sub>, GP<sub>48</sub>, OMD and ME of rice straw block Ⅱ and Ⅲ were obviously higher than those of rice straw block I, but lower than those of alfalfa block (P<0.05). The lag time of rice straw block Ⅱ and Ⅲ was evidently shorter than that of rice straw block Ⅰ(P>0.05) and alfalfa block (P>0.05). The dry matter intake of rice straw blocks was significantly increased by 78.4% (P<0.01), 75.0% (P<0.01) and 43.8% (P<0.01) due to the supplementation of corn silage, concentrate or the decreased rigidity of rice straw block. Consequently, the milk yield, 4% fat corrected milk yield and milk fat percent of treatment Ⅱ and Ⅲ tended to be higher as compared with treatment Ⅰ and control (P>0.05). It is inferred that the proper supplementation of concentrate or corn silage could effectively improve the feed intake and digestibility of rice straw-based block, and better feeding effect on milk performance of dairy cows could be expected when the compound rice straw-based block is used as substitute for alfalfa block. |
| format | Article |
| id | doaj-art-0bf30455e87e4a2abd571edace004cbe |
| institution | Kabale University |
| issn | 1008-9209 2097-5155 |
| language | English |
| publishDate | 2006-11-01 |
| publisher | Zhejiang University Press |
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| series | 浙江大学学报. 农业与生命科学版 |
| spelling | doaj-art-0bf30455e87e4a2abd571edace004cbe2025-08-20T03:58:14ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552006-11-013267167610.3785/1008-9209.2006.06.067110089209Effects of supplementary corn silage or concentrate on the digestibility of compound rice straw-based blocks and milk performance of dairy cowsLIU Xiao-huiWU Yue-mingLIU Jian-xinIn vitro gas production trial and a feeding trial with dairy cows were proposed to investigate the digestibility of compound rice straw-based blocks with different treatments and their effects on the feed intake and milk performance of dairy cows. The treatments of rice straw-based blocks were as follow: (i) Rice straw block Ⅰwas composed of 74.2% rice straw treated with chemicals, 20.4% concentrate mixture and 3.3% minerals premixture; (ii) Ten percent rice straw from rice straw block Ⅰwas equally substituted by corn silage or concentrate for rice straw block Ⅱ or Ⅲ; (iii) Additional 10% water was supplemented to rice straw block Ⅳ, based on the straw block I, in order to decrease the rigidity of the straw block. In trial 1, the in vitro gas production (GP), in vitro organic matter digestibility (OMD) and metabolizable energy (ME) of rice straw block Ⅰ, Ⅱ, Ⅲ, Ⅳ and alfalfa block were measured. In trial 2, according to the similarity of calving date and milk yields, 25 primiparous Holstein cows were divided into five equal groups in a randomized block design with 49 days period. The general diet of dairy farm was fed to cows of control. The alfalfa block (2.7 kg·d<sup>-1</sup>) was substituted respectively by rice straw block Ⅰ, Ⅱ, Ⅲ or Ⅳ as treatments. The results showed that, the GP<sub>24</sub>, GP<sub>48</sub>, OMD and ME of rice straw block Ⅱ and Ⅲ were obviously higher than those of rice straw block I, but lower than those of alfalfa block (P<0.05). The lag time of rice straw block Ⅱ and Ⅲ was evidently shorter than that of rice straw block Ⅰ(P>0.05) and alfalfa block (P>0.05). The dry matter intake of rice straw blocks was significantly increased by 78.4% (P<0.01), 75.0% (P<0.01) and 43.8% (P<0.01) due to the supplementation of corn silage, concentrate or the decreased rigidity of rice straw block. Consequently, the milk yield, 4% fat corrected milk yield and milk fat percent of treatment Ⅱ and Ⅲ tended to be higher as compared with treatment Ⅰ and control (P>0.05). It is inferred that the proper supplementation of concentrate or corn silage could effectively improve the feed intake and digestibility of rice straw-based block, and better feeding effect on milk performance of dairy cows could be expected when the compound rice straw-based block is used as substitute for alfalfa block.https://www.academax.com/doi/10.3785/1008-9209.2006.06.0671compound rice straw-based blockfeed intakedigestibilitymilk performancedairy cattle |
| spellingShingle | LIU Xiao-hui WU Yue-ming LIU Jian-xin Effects of supplementary corn silage or concentrate on the digestibility of compound rice straw-based blocks and milk performance of dairy cows 浙江大学学报. 农业与生命科学版 compound rice straw-based block feed intake digestibility milk performance dairy cattle |
| title | Effects of supplementary corn silage or concentrate on the digestibility of compound rice straw-based blocks and milk performance of dairy cows |
| title_full | Effects of supplementary corn silage or concentrate on the digestibility of compound rice straw-based blocks and milk performance of dairy cows |
| title_fullStr | Effects of supplementary corn silage or concentrate on the digestibility of compound rice straw-based blocks and milk performance of dairy cows |
| title_full_unstemmed | Effects of supplementary corn silage or concentrate on the digestibility of compound rice straw-based blocks and milk performance of dairy cows |
| title_short | Effects of supplementary corn silage or concentrate on the digestibility of compound rice straw-based blocks and milk performance of dairy cows |
| title_sort | effects of supplementary corn silage or concentrate on the digestibility of compound rice straw based blocks and milk performance of dairy cows |
| topic | compound rice straw-based block feed intake digestibility milk performance dairy cattle |
| url | https://www.academax.com/doi/10.3785/1008-9209.2006.06.0671 |
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