Yes rBST has both effects Good and bad.
Its use depends upon the certain factors viz. stage of lactation, number of lactation and aninal health and feeding.
feeding is very important when you are using rBST. Cause it diverts more nutrient towards milk
production. if feeding is not good and nutrients supply is limited or short, the body reserves will be used and animal will become bonny and its future production and reproduction
will be affected.
The practical example of its abuse can be seen in cattle
colonies, Karachi, Hyderabad or where ever commercial mil k colonies are. In every such place you will find two things 1- rBST 2- Oxytocine
The unavailability of good dairy
animals" style="font-size:inherit;font-weight:inherit;font-family:inherit;text-decoration:inherit;">dairy animals indirectly is due to the excessive use of rBST and Oxytocine use. It affects the reproduction cycle adversly and increases length of dry period.