Effects of dietary physically effective neutral detergent fiber content on the feeding behavior, digestibility, and growth of 8- to 10-month-old Holstein replacement heifers

The objective of this study was to evaluate the effects of dietary physically effective neutral detergent fiber (peNDF) content on the feeding behavior, digestion, ruminal fermentation parameters, and growth of 8- to 10-mo-old dairy heifers and to predict the adequacy of dietary fiber in growing dai...

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Bibliographic Details
Published in:Journal of dairy science 2017-02, Vol.100 (2), p.1161-1169
Main Authors: Wang, H.R., Chen, Q., Chen, L.M., Ge, R.F., Wang, M.Z., Yu, L.H., Zhang, J.
Format: Article
Language:English
Subjects:
Animal Feed
Animals
body growth
Cattle - growth & development
Detergents
Diet - veterinary
Dietary Fiber - metabolism
Digestion
Feeding Behavior
Female
Fermentation
Holstein replacement heifer
Hydrogen-Ion Concentration
Lactation
physically effective neutral detergent fiber
Rumen - metabolism
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Summary:The objective of this study was to evaluate the effects of dietary physically effective neutral detergent fiber (peNDF) content on the feeding behavior, digestion, ruminal fermentation parameters, and growth of 8- to 10-mo-old dairy heifers and to predict the adequacy of dietary fiber in growing dairy heifers. Twenty-four Holstein dairy heifers (245 ± 10.8 d of age, 305.6 ± 8.5 kg initial live weight) were randomly divided into 4 treatments with 6 replicates as a completely randomized design. During the 60-d period with a 10-d adaptation, heifers were offered 1 of 4 diets, which were chemically identical but included different peNDF8.0 (particle size is >8 mm and
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.2016-10924