Pig
Transgenic pigs expressing bovine growth hormone had lower appetites, enlarged organs, gastric ulcers, and other health problems.
Sheep growth hormone expression was highly variable in transgenic pigs, whose bodies had more protein and water and less fat.
Transgenic pigs with elevated levels of growth hormone were infertile, pre-diabetic, and experienced joint problems.
Rabbit
Genetically Manipulating Rabbits to Increase Meat Production Caused Enlarged Tongues and Severe Health Problems.
Salmon
Atlantic salmon expressing transgenic growth hormone experienced numerous changes to their cardiorespiratory system.
Genetically modified atlantic salmon/brown trout hybrids have unexpected ecological effects.
Transgenic expression of growth hormone in coho salmon led to a narrower body, more red muscle mass, and smaller white muscle fibers.
Transgenic coho salmon expressing growth hormone had enlarged heads, reduced viability, and accelerated development of their life cycle.
Coho salmon engineered for transgenic expression of growth hormone were more aggressive predators in simulated natural environments.
Sheep
Transgenic expression of sheep growth hormone in sheep increased the incidence of reproductive problems and premature death.
Tilapia
Tilapia fish engineered for transgenic expression of growth hormone had deformed heads and backs, atrophied gonads, and lower mineral content.
