2023
DOI: 10.3390/ani14010139
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Effects of Dietary Fat Level of Concentrate Mix on Growth Performance, Rumen Characteristics, Digestibility, Blood Metabolites, and Methane Emission in Growing Hanwoo Steers

Hyunjin Cho,
Sinyong Jeong,
Kyewon Kang
et al.

Abstract: This study investigated the effect of different dietary fat levels in concentrate mixes on the growth performance, rumen characteristics, digestibility, blood metabolites, and methane emissions in growing Hanwoo steers. Thirty steers (386 ± 24.6 kg of body weight [BW]; 12 months old), blocked by BW, were randomly assigned to three dietary treatments with varying fat concentrations in concentrate mix (48, 74, and 99 g of ether extract per kg dry matte [DM]). The fat intake of the low-fat treatment represented 4… Show more

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“…The comprehensive details of NH 3 -N, VFA, and blood serum analyses are described in Cho et al [18]. Briefly, to analyze the NH 3 -N concentration in rumen fluid, a process involving centrifugation and reaction with phenol color and alkali-hypochlorite reagents was used, followed by incubation in a water bath and spectrophotometric measurement at 630 nm using a spectrophotometer (UV-1800, Shimadzu, Kyoto, Japan).…”
Section: Sample Analysesmentioning
confidence: 99%
“…The comprehensive details of NH 3 -N, VFA, and blood serum analyses are described in Cho et al [18]. Briefly, to analyze the NH 3 -N concentration in rumen fluid, a process involving centrifugation and reaction with phenol color and alkali-hypochlorite reagents was used, followed by incubation in a water bath and spectrophotometric measurement at 630 nm using a spectrophotometer (UV-1800, Shimadzu, Kyoto, Japan).…”
Section: Sample Analysesmentioning
confidence: 99%