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Effects of fibrolytic and amylolytic compound enzyme preparation on rumen fermentation, serum parameters and production performance in primiparous early-lactation dairy cows

Published online by Cambridge University Press:  14 October 2024

Zhaokun Liu ,
Wen Li ,
Congcong Zhao ,
Yuanjie Zhang ,
Yong Li ,
Lamei Wang ,
XiaoYong Li ,
Junhu Yao ,
Wilbert F. Pellikaan  and
Yangchun Cao Open the ORCID record for Yangchun Cao [Opens in a new window]
Zhaokun Liu
Affiliation:
College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P.R. China Animal Nutrition Group, Wageningen University & Research, Wageningen, The Netherlands
Wen Li
Affiliation:
College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P.R. China
Congcong Zhao
Affiliation:
College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P.R. China
Yuanjie Zhang
Affiliation:
College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P.R. China
Yong Li
Affiliation:
College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P.R. China
Lamei Wang
Affiliation:
College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P.R. China Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
XiaoYong Li
Affiliation:
College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P.R. China
Junhu Yao
Affiliation:
College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P.R. China
Wilbert F. Pellikaan
Affiliation:
Animal Nutrition Group, Wageningen University & Research, Wageningen, The Netherlands
Yangchun Cao*
Affiliation:
College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, P.R. China Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
*
Corresponding author: Yangchun Cao; Email: caoyangchun@126.com
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Abstract

This research communication reports the effects of a compound enzyme preparation consisting of fibrolytic (cellulase 3500 CU/g, xylanase 2000 XU/g, β-glucanase 17 500 GU/g) and amylolytic (amylase 37 000 AU/g) enzymes on nutrient intake, rumen fermentation, serum parameters and production performance in primiparous early-lactation (47 ± 2 d) dairy cows. Twenty Holstein–Friesian cows in similar body condition scores were randomly divided into control (CON, n = 10) and experimental (EXP, n = 10) groups in a completely randomized single-factor design. CON was fed a basal total mixed ration diet and EXP was dietary supplemented with compound enzyme preparation at 70 g/cow/d. The experiment lasted 4 weeks, with 3 weeks for adaptation and then 1 week for measurement. Enzyme supplementation significantly increased diet non-fibrous carbohydrates (NFC) content as well as dry matter intake (DMI) and NFC intake (P < 0.05). EXP had increased ruminal butyrate and isobutyrate percentages (P < 0.01) but decreased propionate and valerate percentages (P < 0.05), as well as increased serum alkaline phosphatase activity and albumin concentration (P ≤ 0.01). Additionally, EXP had increased milk yield (0.97 kg/d), 4% fat corrected milk yield and energy corrected milk yield, as well as milk fat and protein yield (P < 0.01). In conclusion, dietary supplementation with a fibrolytic and amylolytic compound enzyme preparation increased diet NFC content, DMI and NFC intake, affected rumen fermentation by increasing butyrate proportion at the expense of propionate, and enhanced milk performance in primiparous early-lactation dairy cows.

Keywords

Amylasefiber-degrading enzymeHolstein–Friesian cattlelactation performance
Type
Research Article
Information
Journal of Dairy Research , Volume 91 , Issue 2 , May 2024 , pp. 167 - 170
Copyright
Copyright © The Author(s), 2024. Published by Cambridge University Press on behalf of Hannah Dairy Research Foundation

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