東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

A Nutritional Survey of Commercially...

Bronkema, Sara M.

Linked to FindBook

Google Book

Amazon

博客來

A Nutritional Survey of Commercially Available Grass-Finished Beef.

Record Type:	Electronic resources : Monograph/item
Title/Author:	A Nutritional Survey of Commercially Available Grass-Finished Beef./
Author:	Bronkema, Sara M.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2018,
Description:	76 p.
Notes:	Source: Masters Abstracts International, Volume: 57-05.
Contained By:	Masters Abstracts International57-05(E).
Subject:	Animal sciences. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10810095
ISBN:	9780355888102

A Nutritional Survey of Commercially Available Grass-Finished Beef.
Bronkema, Sara M.

A Nutritional Survey of Commercially Available Grass-Finished Beef. - Ann Arbor : ProQuest Dissertations & Theses, 2018 - 76 p.

Source: Masters Abstracts International, Volume: 57-05.

Thesis (M.S.)--Michigan State University, 2018.

Consumer interest in the source of their food, its environmental footprint, and the impact of diet on health has supported the growth of the grass-finished beef (GFB) industry. Studies have concluded that GFB has distinct nutritional differences from conventionally-finished beef. As the GFB industry continues to expand, it is vital to continue to explore the nutritional complexities and variation in the product. To achieve this aim, a survey of grass-finishing production systems throughout the U.S. was conducted, and the beef finished on participating farms was analyzed for its nutritional composition, including fatty acid (FA), mineral and fat-soluble vitamin content. Annual production capacity of farms ranged from 25 to 5,000 cattle, with a mean age of cattle at harvest of 26.8 +/- 2.3 months. An array of finishing diets included grazing exclusively perennial pasture, the incorporation of annual forage crops, as well feeding a variety of harvested forages and supplementation of non-starch feed byproducts. The ratio of omega-6 ( n-6) to omega-3 (n-3) FA in beef samples averaged by producer ranged from 1.8 to 28.3, with an overall sample set median of 4.1. Only n-3 FA varied between harvest season, with a greater amount found in beef harvested in the spring. Mineral content was highly variable by season and producer, due to the inherent variation of soil and forage mineral content. Mean alpha-tocopherol content was 610.6 microg/100 g beef, and mean beta-carotene content was 32.2 microg/100 g. The amount of these antioxidants also varied between producers, but tended to be greater in beef finished solely on fresh forages. This survey indicates that commercially available GFB can vary in its nutritional composition due to the diverse practices used to grass-finish cattle.

ISBN: 9780355888102Subjects--Topical Terms:

3174829
Animal sciences.

A Nutritional Survey of Commercially Available Grass-Finished Beef.
LDR:02716nmm a2200301 4500 001 2162935
005 20181012133446.5
008 190424s2018 ||||||||||||||||| ||eng d
020 $a 9780355888102
035 $a (MiAaPQ)AAI10810095
035 $a (MiAaPQ)grad.msu:15978
035 $a AAI10810095
040 $a MiAaPQ $c MiAaPQ
100 1 $a Bronkema, Sara M. $3 3350934
245 1 2 $a A Nutritional Survey of Commercially Available Grass-Finished Beef.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2018
300 $a 76 p.
500 $a Source: Masters Abstracts International, Volume: 57-05.
500 $a Adviser: Jason E. Rowntree.
502 $a Thesis (M.S.)--Michigan State University, 2018.
520 $a Consumer interest in the source of their food, its environmental footprint, and the impact of diet on health has supported the growth of the grass-finished beef (GFB) industry. Studies have concluded that GFB has distinct nutritional differences from conventionally-finished beef. As the GFB industry continues to expand, it is vital to continue to explore the nutritional complexities and variation in the product. To achieve this aim, a survey of grass-finishing production systems throughout the U.S. was conducted, and the beef finished on participating farms was analyzed for its nutritional composition, including fatty acid (FA), mineral and fat-soluble vitamin content. Annual production capacity of farms ranged from 25 to 5,000 cattle, with a mean age of cattle at harvest of 26.8 +/- 2.3 months. An array of finishing diets included grazing exclusively perennial pasture, the incorporation of annual forage crops, as well feeding a variety of harvested forages and supplementation of non-starch feed byproducts. The ratio of omega-6 ( n-6) to omega-3 (n-3) FA in beef samples averaged by producer ranged from 1.8 to 28.3, with an overall sample set median of 4.1. Only n-3 FA varied between harvest season, with a greater amount found in beef harvested in the spring. Mineral content was highly variable by season and producer, due to the inherent variation of soil and forage mineral content. Mean alpha-tocopherol content was 610.6 microg/100 g beef, and mean beta-carotene content was 32.2 microg/100 g. The amount of these antioxidants also varied between producers, but tended to be greater in beef finished solely on fresh forages. This survey indicates that commercially available GFB can vary in its nutritional composition due to the diverse practices used to grass-finish cattle.
590 $a School code: 0128.
650 4 $a Animal sciences. $3 3174829
650 4 $a Food science. $3 3173303
690 $a 0475
690 $a 0359
710 2 $a Michigan State University. $b Animal Science. $3 3180685
773 0 $t Masters Abstracts International $g 57-05(E).
790 $a 0128
791 $a M.S.
792 $a 2018
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10810095