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C.-M.J. Yang

Bio: C.-M.J. Yang is an academic researcher from Pennsylvania State University. The author has contributed to research in topics: Rumen & Monensin. The author has an hindex of 3, co-authored 3 publications receiving 173 citations.
Topics: Rumen, Monensin

Papers
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Journal ArticleDOI
TL;DR: There was a significant concentrate feeding frequency with sampling time interaction influence on NH3 N in which feeding concentrate four times daily minimized postprandial fluctuation of rumenNH3 N concentration.

130 citations

Journal ArticleDOI
TL;DR: It is indicated that monensin can reduce age at puberty in Holstein heifers without affecting BW and composition.

35 citations

Journal ArticleDOI
TL;DR: Data from this study suggest that differences in concentration of protozoa among ruminal sampling sites are related to end products of microbial fermentation.

16 citations


Cited by
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Journal ArticleDOI
TL;DR: Relationships between body weight, wither height, and various other body traits, including heart girth, body length, and hip width, were studied using data from six experiments with 2625 observations.

290 citations

Journal ArticleDOI
TL;DR: Results of this experiment suggest that particle size measurement as estimated by the PSPS is useful in understanding some factors that affect feeding behavior.

233 citations

Journal ArticleDOI
TL;DR: Extension in defining optimum body size and growth characteristics of Holstein replacement heifers is proposed and measures of skeletal growth and body composition with BW are incorporated.
Abstract: Criteria that define optimum body size of replacement heifers are required by commercial dairy producers to evaluate replacement heifer management programs. Historically recommended body size criteria have been based on live BW measurements. Numerous research studies have observed a positive relationship between BW at first calving and first lactation milk yield, which has served as the impetus for using live BW to define body size of replacement heifers. Live BW is, however, not the only available measurement to define body size. Skeletal measurements such as wither height, length, and pelvic area have been demonstrated to be related to first lactation performance and (or) dystocia. Live BW measurements also do not define differences in body composition. Differences in body composition of replacement heifers at first calving are also related to key performance variables. An updated research data base is available for the modern Holstein genotype to incorporate measures of skeletal growth and body composition with BW when defining body size. These research projects also lend insight into the relative importance of measurements that define body size of replacement heifers. Incorporation of these measurements from current research into present BW recommendations should aid commercial dairy producers to better define replacement heifer growth and management practices. This article proposes enhancements in defining optimum body size and growth characteristics of Holstein replacement heifers.

218 citations

Journal ArticleDOI
TL;DR: Research of the past 12 yr related to dairy replacements is summarized and incorporates those findings into possible scenarios for future dairy calf and heifer management systems.

210 citations

Journal ArticleDOI
TL;DR: Results indicate that the type of processed corn incorporated into calf starter can influence intake, growth, and rumen parameters in neonatal calves.

208 citations