You want to buy 200 beef heifers and breed them to safely calve at 18 months (6 months earlier than normal). In consideration of the things that affect the onset of puberty and would make this possible, what are 5 specific things you could do to increase the chances of successfully breeding these heifers at 9 months of age?
a) Improved nutrition, controlled lighting, selective breeding, proper vaccination, socialization
b) Reduced nutrition, increased stress, random breeding, limited healthcare, isolation
c) Adequate nutrition, optimal lighting, genetic selection, health monitoring, social interaction
d) Inadequate nutrition, irregular lighting, no breeding selection, minimal healthcare, solitary confinement