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Growth, ruminal measurements, and health characteristics of Holstein bull calves fed an Aspergillus oryzae fermentation extract.
J Dairy Sci 2015; 98(9):6163-75JD

Abstract

A fermentation extract of the fungus Aspergillus oryzae can be used as a prebiotic. The objective was to determine if dietary inclusion of a fermentation extract of A. oryzae as well as calf age would alter growth, health, performance parameters, and the growth and development of the rumen in Holstein calves from birth thru 1 wk postweaning; it was hypothesized that it would. Purchased bull calves (n=52) that originated from 1 of 13 farms were used in this experiment. All calves had serum IgG greater than 10 mg/mL. Calves were randomly assigned to a slaughter age, 4 (n=16) or 8 wk (n=36), and treatment, control (n=27) or fermentation extract of A. oryzae (AMF; n=25). Calves were housed and fed individually; no bedding was used and no forage was fed. Calves assigned to AMF were fed 2 g of AMF daily. Liquid AMF was delivered in milk replacer for the first 4 wk of the study; solid AMF was top-dressed on texturized starter thereafter. Calves were fed nonmedicated milk replacer twice daily (22.0% crude protein, 20.0% fat, dry matter basis; 680 g/d) and were weaned upon consumption of 0.91 kg of starter (20% crude protein, 2.0% fat; medicated with decoquinate) for 3 consecutive days or on d 45 of the study, whichever came first. Calves had ad libitum access to starter and water throughout the study. Feed intake as well as fecal and respiratory scores were recorded daily; body weight, withers height, and hip height were recorded weekly. Gross rumen measurements and rumen samples for future gross and histological analyses were taken at 4 and 8 wk. All calves grew similarly; weaning age averaged 40.39±0.77 d. Lifetime average daily gain was 0.60±0.05 kg/d and lifetime gain-to-feed ratio was 0.56±0.05. Milk replacer, starter, total dry matter intake, gross and histological rumen measurements, rumen pH, fecal and respiratory scores, and total medical costs were not affected by treatment. Despite total medical costs not differing by treatment, a lower percentage of AMF calves were treated for respiratory ailments and respiratory treatment cost was lower for AMF compared with control. Several factors may have contributed to an overall lack of observed treatment effect in this study, including include the use of a low-forage (compared with concentrate) diet, immunocompetent calves, and the selected product dose and routes of delivery. Dietary inclusion (2 g/d) of an extract of A. oryzae did not affect calf growth, intake, and ruminal or health measurements.

Authors+Show Affiliations

Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster 44691.Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster 44691.Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster 44691. Electronic address: danielsk@vt.edu.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26142841

Citation

Yohe, T T., et al. "Growth, Ruminal Measurements, and Health Characteristics of Holstein Bull Calves Fed an Aspergillus Oryzae Fermentation Extract." Journal of Dairy Science, vol. 98, no. 9, 2015, pp. 6163-75.
Yohe TT, O'Diam KM, Daniels KM. Growth, ruminal measurements, and health characteristics of Holstein bull calves fed an Aspergillus oryzae fermentation extract. J Dairy Sci. 2015;98(9):6163-75.
Yohe, T. T., O'Diam, K. M., & Daniels, K. M. (2015). Growth, ruminal measurements, and health characteristics of Holstein bull calves fed an Aspergillus oryzae fermentation extract. Journal of Dairy Science, 98(9), pp. 6163-75. doi:10.3168/jds.2015-9313.
Yohe TT, O'Diam KM, Daniels KM. Growth, Ruminal Measurements, and Health Characteristics of Holstein Bull Calves Fed an Aspergillus Oryzae Fermentation Extract. J Dairy Sci. 2015;98(9):6163-75. PubMed PMID: 26142841.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Growth, ruminal measurements, and health characteristics of Holstein bull calves fed an Aspergillus oryzae fermentation extract. AU - Yohe,T T, AU - O'Diam,K M, AU - Daniels,K M, Y1 - 2015/07/02/ PY - 2015/01/05/received PY - 2015/05/26/accepted PY - 2015/7/6/entrez PY - 2015/7/6/pubmed PY - 2016/6/9/medline KW - Aspergillus oryzae KW - dairy calf KW - growth KW - prebiotic SP - 6163 EP - 75 JF - Journal of dairy science JO - J. Dairy Sci. VL - 98 IS - 9 N2 - A fermentation extract of the fungus Aspergillus oryzae can be used as a prebiotic. The objective was to determine if dietary inclusion of a fermentation extract of A. oryzae as well as calf age would alter growth, health, performance parameters, and the growth and development of the rumen in Holstein calves from birth thru 1 wk postweaning; it was hypothesized that it would. Purchased bull calves (n=52) that originated from 1 of 13 farms were used in this experiment. All calves had serum IgG greater than 10 mg/mL. Calves were randomly assigned to a slaughter age, 4 (n=16) or 8 wk (n=36), and treatment, control (n=27) or fermentation extract of A. oryzae (AMF; n=25). Calves were housed and fed individually; no bedding was used and no forage was fed. Calves assigned to AMF were fed 2 g of AMF daily. Liquid AMF was delivered in milk replacer for the first 4 wk of the study; solid AMF was top-dressed on texturized starter thereafter. Calves were fed nonmedicated milk replacer twice daily (22.0% crude protein, 20.0% fat, dry matter basis; 680 g/d) and were weaned upon consumption of 0.91 kg of starter (20% crude protein, 2.0% fat; medicated with decoquinate) for 3 consecutive days or on d 45 of the study, whichever came first. Calves had ad libitum access to starter and water throughout the study. Feed intake as well as fecal and respiratory scores were recorded daily; body weight, withers height, and hip height were recorded weekly. Gross rumen measurements and rumen samples for future gross and histological analyses were taken at 4 and 8 wk. All calves grew similarly; weaning age averaged 40.39±0.77 d. Lifetime average daily gain was 0.60±0.05 kg/d and lifetime gain-to-feed ratio was 0.56±0.05. Milk replacer, starter, total dry matter intake, gross and histological rumen measurements, rumen pH, fecal and respiratory scores, and total medical costs were not affected by treatment. Despite total medical costs not differing by treatment, a lower percentage of AMF calves were treated for respiratory ailments and respiratory treatment cost was lower for AMF compared with control. Several factors may have contributed to an overall lack of observed treatment effect in this study, including include the use of a low-forage (compared with concentrate) diet, immunocompetent calves, and the selected product dose and routes of delivery. Dietary inclusion (2 g/d) of an extract of A. oryzae did not affect calf growth, intake, and ruminal or health measurements. SN - 1525-3198 UR - https://www.unboundmedicine.com/medline/citation/26142841/Growth_ruminal_measurements_and_health_characteristics_of_Holstein_bull_calves_fed_an_Aspergillus_oryzae_fermentation_extract_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0022-0302(15)00446-4 DB - PRIME DP - Unbound Medicine ER -