What question did this study set out to answer?

To determine the relationship between corn kernel vitreousness, kernel density, and ruminal in situ starch degradation across different hybrid types and maturity stages.

November 1, 2002Journal of Dairy ScienceOpen Access

Relationship Between Corn Vitreousness and Ruminal In Situ Starch Degradability

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Authors

CCClóvis Eduardo S. CorrêaUniversidade Federal de Lavras RSR.D. ShaverUniversity of Wisconsin–Madison MPMarcos Neves PereiraUniversidade Federal de Lavras

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Implication

Experimental study reveals that higher corn kernel vitreousness reduces ruminal starch degradability in dairy cattle, indicating kernel density can efficiently screen feed quality.

Key Points

To determine the relationship between corn kernel vitreousness, kernel density, and ruminal in situ starch degradation across different hybrid types and maturity stages.
Evaluated 14 U.S. dent hybrids harvested at three maturity stages (one-half milk line, black layer, and 21 days post-black layer) and five mature Brazilian flint hybrids.
Measured kernel vitreousness by manual dissection and determined ruminal in situ starch degradability using three lactating Holstein cows fitted with ruminal cannulae.
Mature Brazilian flint hybrids had higher average vitreousness (73.1%, range 64.2% to 80.0%) than mature U.S. dent hybrids (48.2%, range 34.9% to 62.3%), with U.S. hybrid vitreousness increasing from 42.8% to 48.2% across maturity stages.
Kernel vitreousness and kernel density correlated strongly with each other (r = 0.87) and both were negatively correlated with ruminal starch availability (r = -0.93 and r = -0.87, respectively).

Cite This Study

Corrêa et al. (2002) studied this question.

synapsesocial.com/papers/6a818f6fcb8186709ca1e26e https://doi.org/10.3168/jds.s0022-0302(02)74386-5

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Implication

Experimental study reveals that higher corn kernel vitreousness reduces ruminal starch degradability in dairy cattle, indicating kernel density can efficiently screen feed quality.

Relationship Between Corn Vitreousness and Ruminal In Situ Starch Degradability

Discussion

Member takes

Implication

Key Points

Cite This Study

Relationship Between Corn Vitreousness and Ruminal In Situ Starch Degradability

Discussion

Member takes

Implication

Key Points

Cite This Study

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