Effects of corn straw or mixed forage diet on rumen fermentation parameters of lactating cows using a wireless data logger
文献类型: 外文期刊
第一作者: Qin, Chunfu
作者: Qin, Chunfu;Bu, Dengpan;Sun, Peng;Zhao, Xiaowei;Wang, Jiaqi;Qin, Chunfu;Zhang, Peihua;Qin, Chunfu
作者机构:
关键词: dairy cow;forage type;rumen fermentation parameter;wireless data logger
期刊名称:ANIMAL SCIENCE JOURNAL ( 影响因子:1.749; 五年影响因子:1.909 )
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收录情况: SCI
摘要: The objective of this study was to evaluate the effect of two different forage types on rumen fermentation parameters and profiles using a wireless data logger. Eight lactating cows were randomly assigned to one of two dietary treatments with a low forage diet with corn straw (CS) or a high forage diet with mixed forage (MF) as the forage source, respectively. Dietary physically effective neutral detergent fiber (peNDF) content was 11.3% greater in CS. Dry matter intake and milk fatty acid content decreased upon CS (P<0.05). Ruminal pH, temperature and oxidation reduction potential (ORP) were monitored for 14weeks. The CS group had significantly higher pH but lower temperature and ORP compared to MF (P<0.01). With the CS diet regime, pH at the time before morning feeding, rumination and post-ingestion were significantly higher than those in the MF group (P<0.05). However, times with the ruminal pH below 6.0 and 5.8 were significantly reduced (P<0.05), whereas ruminal pH below 5.6 tended to be lower (P=0.07). The results indicated that rumen fermentation parameters were affected by forage types and dietary peNDF content might be predominant in ruminal pH regulation.
分类号: S8
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