ORIGINAL ARTICLE: Effects of long-term feeding of genetically modified corn (event MON810) on the performance of lactating dairy cows: Long-term feeding of genetically modified corn in dairy cows
Abstract
A long-term study over 25 months was conducted to evaluate the effects of genetically modified corn on performance of lactating dairy cows. Thirty-six dairy cows were assigned to two feeding groups and fed with diets based on whole-crop silage, kernels and whole-crop cobs from Bt-corn (Bt-MON810) or its isogenic not genetically modified counterpart (CON) as main components. The study included two consecutive lactations. There were no differences in the chemical composition and estimated net energy content of Bt-MON810 and CON corn components and diets. CON feed samples were negative for the presence of Cry1Ab protein, while in Bt-MON810 feed samples the Cry1Ab protein was detected. Cows fed Bt-MON810 corn had a daily Cry1Ab protein intake of 6.0 mg in the first lactation and 6.1 mg in the second lactation of the trial. Dry matter intake (DMI) was 18.8 and 20.7 kg/cow per day in the first and the second lactation of the trial, with no treatment differences. Similarly, milk yield (23.8 and 29.0 kg/cow per day in the first and the second lactation of the trial) was not affected by dietary treatment. There were no consistent effects of feeding MON810 or its isogenic CON on milk composition or body condition. Thus, the present long-term study demonstrated the compositional and nutritional equivalence of Bt-MON810 and its isogenic CON.
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Organ pathology and function were similar between animals fed GE and non-GE corn.
“Organ pathology and function were similar between animals fed GE and nonGE corn”
From Prevalence and impacts of genetically engineered feedstuffs on livestock populations1 (2014) · cites this paper as Steinke et al., 2010
There were statistically significant differences in some of the parameters measured in the two comprehensive studies.
“there were statistically significant differences in some of the parameters mea sured.”
From Prevalence and impacts of genetically engineered feedstuffs on livestock populations1 (2014) · cites this paper as Steinke et al., 2010
Neither the cry1Ab gene nor the Cry1Ab protein was found in the blood, organs, or products of animals fed GE corn.
“Neither the cry1Ab gene nor the Cry1Ab protein was found in the blood, organs, or products of animals fed GE corn”
From Prevalence and impacts of genetically engineered feedstuffs on livestock populations1 (2014) · cites this paper as Steinke et al., 2010
There were no adverse effects of feeding GE corn on small intestinal morphology or the gut microbiota.
“there were no adverse effects of feeding GE corn on small intestinal morphology or the gut microbiota.”
From Prevalence and impacts of genetically engineered feedstuffs on livestock populations1 (2014) · cites this paper as Steinke et al., 2010
Results from comprehensive studies revealed the compositional and nutritional noninferiority of GE corn to its isogenic control and an absence of long-term adverse effects from GE corn consumption.
“Results from these comprehensive studies revealed the compositional and nutritional noninferiority of GE corn to its isogenic control and an absence of long-term adverse effects from GE corn consumption.”
From Prevalence and impacts of genetically engineered feedstuffs on livestock populations1 (2014) · cites this paper as Steinke et al., 2010
Antibodies specific to the GE corn protein Cry1Ab were not detected in the blood, indicating the absence of an allergic-type immune response to the protein.
“Antibodies specific to the GE corn protein (Cry1Ab) were not detected in the blood, indicating the absence of an allergic-type immune response to the protein.”
From Prevalence and impacts of genetically engineered feedstuffs on livestock populations1 (2014) · cites this paper as Steinke et al., 2010
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- Authors
- Steinke, K., Guertler, P., Paul, V., Wiedemann, S., Ettle, T., Albrecht, C., Meyer, H. H. D., Spiekers, H., & Schwarz, F. J.
- Affiliations
- Technical University of Munich (DE)
- Bavarian State Research Center for Agriculture (DE)
- Corresponding author
- Schwarz, F. J.
- Venue
- Journal of Animal Physiology and Animal Nutrition
- Publisher
- Wiley
- Published
- 2010-06-22
- Volume
- 94
- Issue
- 5
- Pages
- e185-e193
- ISSN
- 0931-2439 (ISSN-L)
- OpenAlex
- W1841373253
- Cited by
- 38
- References
- 27
- Citations by year
- 2026: 1 · 2022: 3 · 2020: 1 · 2019: 1 · 2018: 2 · 2017: 4 · 2016: 2 · 2015: 6 · 2014: 3 · 2013: 4 · 2012: 8
- FWCI
- 5.75
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Animal Physiology and Animal Nutrition (publishedVersion)
- PubMed (publishedVersion)
- Bern Open Repository and Information System (University of Bern) (submittedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Genetically Modified Organisms Research
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Ruminant Nutrition and Digestive Physiology
- Life Sciences › Agricultural and Biological Sciences › Food Science › Agricultural safety and regulations
- Keywords
- transgenic maize, lactating dairy cows, Cry1Ab toxin, whole crop silage, feed safety, milk yield, dry matter intake, milk composition, body condition, nutritional equivalence, long-term feeding
- MeSH terms
- Bacillus thuringiensis Toxins, Animals, Animal Feed, Animal Nutritional Physiological Phenomena, Bacterial Proteins, Cattle, Zea mays, Diet, Endotoxins, Fats, Female, Hemolysin Proteins, Lactation, Milk, Plants, Genetically Modified
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