Effects of moisture content or particle size on the in situ degradability of maize silage and alfalfa haylage in lactating dairy cows

A study using four Holstein cows with ruminal cannulas was conducted to evaluate the degradability of different moisture content or particle size of maize silage and alfalfa haylage. The maize silage (MS; 20-mm length) and alfalfa haylage (AH; 40-mm length) samples were wet (wet maize silage, MSW; w...

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Main Authors: Yang Zou, Shuangzhao Dong, Yun Du, Shengli Li, Yajing Wang, Zhijun Cao
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2016-09-01
Series:Animal Nutrition
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2405654516300828
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spelling doaj-2f098eb6337b4b5cae8ffc6224e04b7a2021-02-02T06:06:12ZengKeAi Communications Co., Ltd.Animal Nutrition2405-65452016-09-012324925210.1016/j.aninu.2016.05.002Effects of moisture content or particle size on the in situ degradability of maize silage and alfalfa haylage in lactating dairy cowsYang ZouShuangzhao DongYun DuShengli LiYajing WangZhijun CaoA study using four Holstein cows with ruminal cannulas was conducted to evaluate the degradability of different moisture content or particle size of maize silage and alfalfa haylage. The maize silage (MS; 20-mm length) and alfalfa haylage (AH; 40-mm length) samples were wet (wet maize silage, MSW; wet alfalfa haylage, AHW), dried (dried maize silage, MSD; dried alfalfa haylage, AHD), or ground to pass through a 2.5-mm screen (dried ground maize silage, MSG; dried ground alfalfa haylage, AHG). Samples were incubated in the rumen for 2, 6, 12, 24, 36, 48, and 72 h. Cows were fed ad libitum and allowed free access to water. High moisture content treatment of MSW expressed a lower rinsing NDF and ADF degradability at 2 h (P < 0.05) compared with dried samples (MSD and MSG). Different moisture content and particle size had a significant impact (P < 0.05) on the NDF degradability at 72 h, ADF degradability at 36, 48, and 72 h, and ruminally degradable ADF. All of the highest values were observed in small particle size and low moisture content AHG treatment. Based on this study, sample processing, such as drying and grinding, should be considered when evaluating nutritive values of forages.http://www.sciencedirect.com/science/article/pii/S2405654516300828Alfalfa haylageDegradabilityLactating cowsMaize silage
collection DOAJ
language English
format Article
sources DOAJ
author Yang Zou
Shuangzhao Dong
Yun Du
Shengli Li
Yajing Wang
Zhijun Cao
spellingShingle Yang Zou
Shuangzhao Dong
Yun Du
Shengli Li
Yajing Wang
Zhijun Cao
Effects of moisture content or particle size on the in situ degradability of maize silage and alfalfa haylage in lactating dairy cows
Animal Nutrition
Alfalfa haylage
Degradability
Lactating cows
Maize silage
author_facet Yang Zou
Shuangzhao Dong
Yun Du
Shengli Li
Yajing Wang
Zhijun Cao
author_sort Yang Zou
title Effects of moisture content or particle size on the in situ degradability of maize silage and alfalfa haylage in lactating dairy cows
title_short Effects of moisture content or particle size on the in situ degradability of maize silage and alfalfa haylage in lactating dairy cows
title_full Effects of moisture content or particle size on the in situ degradability of maize silage and alfalfa haylage in lactating dairy cows
title_fullStr Effects of moisture content or particle size on the in situ degradability of maize silage and alfalfa haylage in lactating dairy cows
title_full_unstemmed Effects of moisture content or particle size on the in situ degradability of maize silage and alfalfa haylage in lactating dairy cows
title_sort effects of moisture content or particle size on the in situ degradability of maize silage and alfalfa haylage in lactating dairy cows
publisher KeAi Communications Co., Ltd.
series Animal Nutrition
issn 2405-6545
publishDate 2016-09-01
description A study using four Holstein cows with ruminal cannulas was conducted to evaluate the degradability of different moisture content or particle size of maize silage and alfalfa haylage. The maize silage (MS; 20-mm length) and alfalfa haylage (AH; 40-mm length) samples were wet (wet maize silage, MSW; wet alfalfa haylage, AHW), dried (dried maize silage, MSD; dried alfalfa haylage, AHD), or ground to pass through a 2.5-mm screen (dried ground maize silage, MSG; dried ground alfalfa haylage, AHG). Samples were incubated in the rumen for 2, 6, 12, 24, 36, 48, and 72 h. Cows were fed ad libitum and allowed free access to water. High moisture content treatment of MSW expressed a lower rinsing NDF and ADF degradability at 2 h (P < 0.05) compared with dried samples (MSD and MSG). Different moisture content and particle size had a significant impact (P < 0.05) on the NDF degradability at 72 h, ADF degradability at 36, 48, and 72 h, and ruminally degradable ADF. All of the highest values were observed in small particle size and low moisture content AHG treatment. Based on this study, sample processing, such as drying and grinding, should be considered when evaluating nutritive values of forages.
topic Alfalfa haylage
Degradability
Lactating cows
Maize silage
url http://www.sciencedirect.com/science/article/pii/S2405654516300828
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