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Nutritional depletion of total mixed rations by red-winged blackbirds and projected impacts on dairy cow performance

Published online by Cambridge University Press:  29 August 2018

James C. Carlson ,
Randal S. Stahl ,
John J. Wagner ,
Terry E. Engle ,
Shelagh T. DeLiberto ,
Dustin A. Reid  and
Scott J. Werner
James C. Carlson
Affiliation:
U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, 4101 LaPorte Avenue, Fort Collins, Colorado, USA
Randal S. Stahl
Affiliation:
U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, 4101 LaPorte Avenue, Fort Collins, Colorado, USA
John J. Wagner
Affiliation:
Department of Animal Science, Colorado State University, College of Agricultural Sciences, Fort Collins, Colorado, USA
Terry E. Engle
Affiliation:
Department of Animal Science, Colorado State University, College of Agricultural Sciences, Fort Collins, Colorado, USA
Shelagh T. DeLiberto
Affiliation:
U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, 4101 LaPorte Avenue, Fort Collins, Colorado, USA
Dustin A. Reid
Affiliation:
U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, 4101 LaPorte Avenue, Fort Collins, Colorado, USA
Scott J. Werner*
Affiliation:
U.S. Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, 4101 LaPorte Avenue, Fort Collins, Colorado, USA
*
*For correspondence; e-mail: [email protected]
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Abstract

This Research Communication describes an investigation of the nutritional depletion of total mixed rations (TMR) by pest birds. We hypothesized that species-specific bird depredation of TMR can alter the nutritional composition of the ration and that these changes can negatively impact the performance of dairy cows. Blackbirds selected the high energy fraction of the TMR (i.e., flaked corn) and reduced starch, crude fat and total digestible nutrients during controlled feeding experiments. For Holsteins producing 37·1 kg of milk/d, dairy production modeling illustrated that total required net energy intake (NEI) was 35·8 Mcal/d. For the reference TMR unexposed to blackbirds and the blackbird-consumed TMR, NEI supplied was 41·2 and 37·8 Mcal/d, and the resulting energy balance was 5·4 and 2·0 Mcal/d, respectively. Thus, Holsteins fed the reference and blackbird-consumed TMR were estimated to gain one body condition score in 96 and 254 d, and experience daily weight change due to reserves of 1·1 and 0·4 kg/d, respectively. We discuss these results in context of an integrated pest management program for mitigating the depredation caused by pest birds at commercial dairies.

Keywords

Agelaius phoeniceusdairy productionbird damage managementnutrition
Type
Research Article
Information
Journal of Dairy Research , Volume 85 , Issue 3 , August 2018 , pp. 273 - 276
Copyright
Copyright © Hannah Dairy Research Foundation 2018 

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References

Benjamini, Y & Hochberg, Y 1995 Controlling for false discovery rate: a practical and powerful approach to multiple testing. Journal of the Royal Statistical Society 57 289–300Google Scholar
Besser, JF, DeGrazio, JW & Guarino, JL 1968 Costs of wintering starlings and red-winged blackbirds at feedlots. Journal of Wildlife Management 32 179–180Google Scholar
Carlson, JC, Stahl, RS, DeLiberto, ST, Wagner, JJ, Engle, TE, Engeman, RM, Olson, CS, Ellis, JW & Werner, SJ 2018 Nutritional depletion of total mixed rations by European starlings: projected effects on dairy cow performance and potential intervention strategies to mitigate damage. Journal of Dairy Science 101 1777–1784Google Scholar
Depenbusch, BE, Drouillard, JS & Lee, CD 2011 Feed depredation by European starlings in a Kansas feedlot. Human-Wildlife Interactions 5 58–65Google Scholar
Dolbeer, RA, Wornecki, PA, Strickley, JR & White, SB 1978 Agricultural impact of a winter population of blackbirds and starlings. Wilson Bulletin 90 31–44Google Scholar
Glahn, JF, Twedt, DJ & Otis, DL 1983 Estimating feed loss from starling use of livestock feed troughs. Wildlife Society Bulletin 11 366–372Google Scholar
National Research Council (NRC) 2001 Nutrient Requirement of Dairy Cattle, Seventh edition. National Research Council, National Academy Press, Washington, DCGoogle Scholar
Shwiff, SA, Carlson, JC, Glass, H, Suckow, J, Lowney, MS, Moxcey, KM, Larson, B & Linz, GM 2012 Producer survey of bird livestock interactions in commercial dairies. Journal of Dairy Science 95 6820–6829Google Scholar
Twedt, DJ & Glahn, JF 1982 Reducing starling depredation at livestock feeding operations through changes in management practices. Proceedings of the Vertebrate Pest Conference 10 159–163Google Scholar
White, SB, Dolbeer, RA & Bookhout, TA 1985 Ecology, bioenergetics, and agricultural impacts of a winter-roosting population of blackbirds and starlings. Wildlife Monographs 93 1–42Google Scholar