List four areas of livestock production that are currently being researched for the use of biotechnology
What will be an ideal response?
ANS:Answers
will vary, but should include four of the following: Indentifying genetic markers for cattle
and swine to improve breeding; identifying the gene that determines the horned condition in cattle;
reducing undesirable side effects of vaccines; developing bacteria for use with non-ruminants;
modifying rumen microorganisms; developing vaccines for controlling foot-and-mouth disease,
bluetongue, and swine dysentery; manufacturing bovine interferon to control shipping fever;
increasing the rate of twinning in cattle; improving resistance to internal parasites; accelerating growth
rates in response to specific feed additive; developing a feed additive that activates the uterine gene;
developing the ability to screen progeny; producing the hormone relaxin for use as a therapeutic agent;
or making a commercially produced scours vaccine.
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