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Impacts of Silage Feed-out Speed, Da...

Okatsu, Yuki.

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Impacts of Silage Feed-out Speed, Days after Silo Opening and Surface Silage Density on Spoilage of Silage in the Exposed Face Peripheral Area of Corn Silage Piles.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Impacts of Silage Feed-out Speed, Days after Silo Opening and Surface Silage Density on Spoilage of Silage in the Exposed Face Peripheral Area of Corn Silage Piles./
Author:	Okatsu, Yuki.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	94 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=10683082
ISBN:	9780355764468

Impacts of Silage Feed-out Speed, Days after Silo Opening and Surface Silage Density on Spoilage of Silage in the Exposed Face Peripheral Area of Corn Silage Piles.
Okatsu, Yuki.

Impacts of Silage Feed-out Speed, Days after Silo Opening and Surface Silage Density on Spoilage of Silage in the Exposed Face Peripheral Area of Corn Silage Piles. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 94 p.

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

Thesis (M.S.)--University of California, Davis, 2017.

Impacts of Silage Feed-out Speed, Days after Silo Opening and Surface Silage Density on Spoilage of Silage in the Exposed Face Peripheral Area of Corn Silage Piles Abstract Appropriate management of silage piles during feed-out is important to minimize silage spoilage. Once the plastic covers are removed and silage near the exposed silage 'face' is exposed to air, undesirable microbes can proliferate and cause negative impacts on the hygienic quality and nutritional value of the silage. In California, making silage in large piles is a popular practice in the dairy industry due to its flexibility and affordability that enables dairy producers to make large amounts of silage with low facilities investment. However, pile silage has characteristics, often including a long feed-out phase and large exposed silage area that make it prone to spoilage, especially in the exposed face peripheral area, during feed-out. Silage samples were collected from 10 corn silage piles in the Great Central Valley (GCV) of California to evaluate impacts of the management factors, feed-out speed, days after opening and surface silage density of the piles on the degree of spoilage (i.e., defined as mold and yeast counts) in the exposed face peripheral area of silage piles. Faster feed-out speed (i.e., 0.29 m versus 0.62 m/d) had the most suppressive impact on the progression of spoilage as indicated by lower temperature and pH, and higher lactic and acetic acid levels, as well as higher lactic acid bacteria (LAB) abundance in fast-speed piles. Shorter days after opening ( i.e., 110 d versus 61 d) also impacted the degree of spoilage as indicated by lower mold counts and higher lactic and acetic acid levels in short-open piles. In contrast, higher surface density ( i.e., 360 versus 312 kg/m3) had little suppressive impact on the progression of spoilage, as indicated by its low impact only on a few parameters, including temperature and LAB abundance.

ISBN: 9780355764468Subjects--Topical Terms:

3174829
Animal sciences.

Impacts of Silage Feed-out Speed, Days after Silo Opening and Surface Silage Density on Spoilage of Silage in the Exposed Face Peripheral Area of Corn Silage Piles.
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520 $a Impacts of Silage Feed-out Speed, Days after Silo Opening and Surface Silage Density on Spoilage of Silage in the Exposed Face Peripheral Area of Corn Silage Piles Abstract Appropriate management of silage piles during feed-out is important to minimize silage spoilage. Once the plastic covers are removed and silage near the exposed silage 'face' is exposed to air, undesirable microbes can proliferate and cause negative impacts on the hygienic quality and nutritional value of the silage. In California, making silage in large piles is a popular practice in the dairy industry due to its flexibility and affordability that enables dairy producers to make large amounts of silage with low facilities investment. However, pile silage has characteristics, often including a long feed-out phase and large exposed silage area that make it prone to spoilage, especially in the exposed face peripheral area, during feed-out. Silage samples were collected from 10 corn silage piles in the Great Central Valley (GCV) of California to evaluate impacts of the management factors, feed-out speed, days after opening and surface silage density of the piles on the degree of spoilage (i.e., defined as mold and yeast counts) in the exposed face peripheral area of silage piles. Faster feed-out speed (i.e., 0.29 m versus 0.62 m/d) had the most suppressive impact on the progression of spoilage as indicated by lower temperature and pH, and higher lactic and acetic acid levels, as well as higher lactic acid bacteria (LAB) abundance in fast-speed piles. Shorter days after opening ( i.e., 110 d versus 61 d) also impacted the degree of spoilage as indicated by lower mold counts and higher lactic and acetic acid levels in short-open piles. In contrast, higher surface density ( i.e., 360 versus 312 kg/m3) had little suppressive impact on the progression of spoilage, as indicated by its low impact only on a few parameters, including temperature and LAB abundance.
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