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Evaluating the use of stable isotopes, NIRS, and microbial populations to detect dietary changes in dairy calves.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Evaluating the use of stable isotopes, NIRS, and microbial populations to detect dietary changes in dairy calves./
作者:	Cooley, Kathryn Marie.
面頁冊數:	1 online resource (128 pages)
附註:	Source: Masters Abstracts International, Volume: 74-11.
Contained By:	Masters Abstracts International74-11.
標題:	Animal sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1536062click for full text (PQDT)
ISBN:	9781303036538

Evaluating the use of stable isotopes, NIRS, and microbial populations to detect dietary changes in dairy calves.
Cooley, Kathryn Marie.

Evaluating the use of stable isotopes, NIRS, and microbial populations to detect dietary changes in dairy calves. - 1 online resource (128 pages)

Source: Masters Abstracts International, Volume: 74-11.

Thesis (M.S.)--Mississippi State University, 2013.

Includes bibliographical references

Three different methods were developed to evaluate nutritional status: stable isotopes, near infra-red reflectance spectroscopy (NIRS), and microbial populations. In the first method, hair samples were collected, analyzed, stable isotope content greatly differed (P < 0.01) between pre- and post-weaning samples. The second method used NIRS spectral patterns and analyzed fecal samples, and a difference was found around 2100 to 2250 nm where diets containing milk showed a peak, and non-milk diets showed a plateau. Finally, the third method involved profiling microbial populations from fecal samples as calves experienced dietary shifts. Total anaerobes, enterics, and clostridium were different (P<0.05) from pre to post-weaning states. Total anaerobe samples differed (P < 0.005) from milk, milk-grain diets to grain and grain-hay diets. Total aerobes, streptococci, and clostridium samples differed (P <0.001) from the milk diet to the other diets. In summary, all three methods showed differences when comparing pre- to post-weaning states.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9781303036538Subjects--Topical Terms:

3174829
Animal sciences.
Subjects--Index Terms:

Dairy calvesIndex Terms--Genre/Form:

542853
Electronic books.

Evaluating the use of stable isotopes, NIRS, and microbial populations to detect dietary changes in dairy calves.
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520 $a Three different methods were developed to evaluate nutritional status: stable isotopes, near infra-red reflectance spectroscopy (NIRS), and microbial populations. In the first method, hair samples were collected, analyzed, stable isotope content greatly differed (P < 0.01) between pre- and post-weaning samples. The second method used NIRS spectral patterns and analyzed fecal samples, and a difference was found around 2100 to 2250 nm where diets containing milk showed a peak, and non-milk diets showed a plateau. Finally, the third method involved profiling microbial populations from fecal samples as calves experienced dietary shifts. Total anaerobes, enterics, and clostridium were different (P<0.05) from pre to post-weaning states. Total anaerobe samples differed (P < 0.005) from milk, milk-grain diets to grain and grain-hay diets. Total aerobes, streptococci, and clostridium samples differed (P <0.001) from the milk diet to the other diets. In summary, all three methods showed differences when comparing pre- to post-weaning states.
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538 $a Mode of access: World Wide Web
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