The effect of pelleting on in situ rumen degradability of compound feed containing brown rice for dairy cows

This study was conducted to determine the effect of pelleting on in situ dry matter degradability of pelleted compound feed containing brown rice for dairy cows. Mash feed of the same composition was used as a control and the in situ study was conducted using three non‐lactating Holstein steers fitt...

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Published inAnimal science journal Vol. 88; no. 1; pp. 185 - 189
Main Authors Tagawa, Shin‐ichi, Yoshida, Norio, Iino, Yukihiro, Horiguchi, Ken‐ichi, Takahashi, Toshiyoshi, Watanabe, Maria, Takemura, Kei, Ito, Syuhei, Mikami, Toyoji
Format Journal Article
LanguageEnglish
Published Australia Blackwell Publishing Ltd 01.01.2017
Subjects
Animal Feed - analysis
Animals
Brassica rapa
brown rice
Cattle
Cattle - physiology
chemical components
Dairying
Diet - veterinary
Dietary Fiber
Digestion
Feeds
Female
Food Handling
Glycine max
in situ dry matter degradability
nylon bag technique
Oryza
pellet
Rice
Rumen - physiology
Triticum aestivum
chemical components
in situ dry matter degradability
pellet
brown rice
nylon bag technique
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Summary:This study was conducted to determine the effect of pelleting on in situ dry matter degradability of pelleted compound feed containing brown rice for dairy cows. Mash feed of the same composition was used as a control and the in situ study was conducted using three non‐lactating Holstein steers fitted with a rumen cannula. The feeds contained 32.3% brown rice, 19.4% rapeseed meal, 11.4% wheat bran and 10.6% soybean meal (fresh weight basis). Except for moisture content, the chemical composition of the feed was not affected by pelleting. In situ dry matter disappearance of the feed increased from 0 to 2 h and after 72 h of incubation with pellet processing. Integration of the dry matter disappearance values over time revealed that degradability parameter a (soluble fraction) increased with pellet processing, whereas parameter b (potentially degradable fraction) decreased. Parameter c (fractional rate of degradation) and effective degradability (5% passage rate) were not affected by pellet processing. We concluded that pellet processing promotes rumen degradability at early incubation hours when the pelleted feed contains brown rice.
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ISSN:1344-3941
1740-0929
DOI:10.1111/asj.12654