Feeding Studies with Firstgeneration GM Plants (Input Traits) with Food-producing Animals - Animal Nutrition with Transgenic Plants - page 77

Table 6.3. Some results of feeding studies with feed from various GM plants with different traits of the fi rst generation in food-producing animals (in comparison
with isogenic counterparts and mostly with commercial varieties).

Animal species/
category (animals
per treatment)

Duration (days) or
living span (kg)

Portion in diet (%
or kg)

GM plant/trait Parameters Main results References

Maize
Insect protected (Bt maize);
silage

Dairy cattle (12) 91 days 70% Feed intake, milk yield,

composition

No signifi cant infl uence on
milk yield and composition

Barriere et al ., 2001

Insect protected (Bt 11 maize);
silage/grain

Dairy cattle (16) 4  21 days 40/28% of DM;

silage/grain

Feed intake, milk yield,
composition, rumen
fermentation

No signifi cant effects on
intake, yield and rumen
fermentation

Folmer et al ., 2002

Glyphosate-tolerant or insect-
protected (European corn
borer) maize; silage and
grain (3 trials)

Dairy cattle (6/8/8) 63/84/84 days 42-60% silage;

20-34% grain

Feed intake, milk yield,
composition, ruminal
degradability

No signifi cant differences in all
measured parameters

Donkin et al ., 2003

Glyphosate-tolerant (RR) and
rootworm-resistant maize
(Bt); grain, silage

Dairy cattle; 2
studies; 2  4  4
Latin square

28/21 days 40/23% silage/

grain (1);
26.7% grain (2)

Feed intake, milk yield,
composition

No effect on milk yield and
composition

Grant et al ., 2003

Glyphosate tolerant; silage and
grain (RR-NK603 maize)

Dairy cattle; 4  4
Latin square (8)

56 days 30% silage;

27.3% grain

Feed intake, milk yield,
composition

No signifi cant effect on milk
yield and milk composition

Ipharraguerre et al .,
2003

Insect protected (Bt), herbicide
tolerant; silage

Dairy cattle (8) 28 days 45% Milk yield, composition,

tDNA, Cry1Ab

No infl uence on composition
of silage and milk, milk
yield, no tDNA and Cry1Ab
in milk

Calsamiglia et al .,
2007

Insect protected (Bt); silage,
grain

Dairy cattle (15) 765 days 63% roughage,

41%
concentrate

Feed intake, milk yield,
composition, tDNA,
Cry1AB, metabolic
parameters

No signifi cant infl uence on
measured data

Guertler et al ., 2009;
Spiekers et al .,
2009; Steinke et al .,
2010

Insect-protected (rootworm)
and herbicide (glufosinate)-
tolerant maize

Dairy cattle (15;
switchback
design)

28 days 23% grain; 21%

silage

Feed intake, milk yield,
composition

No signifi cant infl uence of GM
feed on all parameters

Brouk et al ., 2011