In:
Animal Science Journal, Wiley, Vol. 88, No. 2 ( 2017-02), p. 259-266
Abstract:
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 14 weeks. 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.
Type of Medium:
Online Resource
ISSN:
1344-3941
,
1740-0929
DOI:
10.1111/asj.2017.88.issue-2
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
2095161-9
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