The use of near infrared reflectance spectroscopy to predict protein fractions in free-ranging cattle /
(CP), 20-hr in vitro protein digestibility, and acid
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1996.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (CP), 20-hr in vitro protein digestibility, and acid (SEC) for warm-season DIP, DUP, and IIP were 0.96, 0.36, and 0.25, respectively. While coefficients of determination (W) analysis provided the dependent and independent variable data and calculated on a percent dry matter (%DM) basis. and IIP were deemed unsatisfactory and need future work. A and ruminal cannulated cattle grazing native forage (warm and answers to increasing questions about the nutritional status based diets. Forage samples were obtained from esophageal cattle. However, the stability of these predictions is cool season), while fecal samples were acquired from non- CP content. Fecal sample spectra and forage laboratory Degraded intake protein (DIP) and digestible undegraded detergent fiber nitrogen (ADFN) were conducted on extrusa, equations were found to be less encouraging and yielded le estimations for protein utilization of distinct protein explainable, therefore the equations were deemed satisfactory first-generation predictive equations and should be upgraded fistulated animals grazing the same pastures as the fistulated animals Laboratory analysis for crude protein for first generation predictive technology. Cool-season for the same fractions were 0.81, 0.94, and 0.97, fractions in the gastrointestinal tract of freeranging heavily dependent on forage type. These equations serve as improve the DUP and IIP cool-season equations. NIRS Indigestible intake protein (IIP) was considered to be the more robust dataset with greater standardization of lab near infrared reflectance spectroscopy (NIRS) technology to needed to conduct stepwise regression analysis and obtain nitrogen (N) content in the residue from the ADF procedure. of cattle on grazinglands. predict fractional protein utilization in cattle on forage predictive NIRS equations. Standard error of calibration protein (DUP) were calculated from ADFN, 20-hr in vitro, and Research was conducted to assess the feasibility of using respectively, while SEC values were 0.95, 0.50, and 0.24, respectively. The cool-season calibrated equations for DLTP respectively. Wavelengths selected were biologically technique and stricter sampling methods will be required to technology proved to be a feasible means of providing through enhanced research to provide cattle producers with values for DIP, DUP, and IEP of 0.90, 0.39, and 0.78, |
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| Item Description: | "Major subject: Rangeland Ecology and Management". Vita. |
| Physical Description: | xiii, 113 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references: pages 104-112. |