I don't know any specifics about the nature of Porntip and Gung's relationship, but my understanding is that it's been more a matter of circumstances that they've never bred with each other and both of Porntip's calves have been conceived via AI.
When Pathi Harn was conceived in approx. May 2008, it was considered a priority for the matriarch to breed and there was a concern that Gung would not be able to reach the older female yet. Bong Su had been trained for AI (in the first instance to test his fertility, and then for AI with Melbourne's females when he did not breed naturally with them) and therefore was chosen as the sire.
The question mark is over why Porntip didn't conceive at Taronga before being transferred to Dubbo, like Thong Dee did. Obviously by the time Kanlaya was conceived, there were no adult bulls on site, so it made sense that she conceived via AI. I would only be speculating, but perhaps at the time, Taronga wanted to stagger breeding.
There only would have been two cows in the herd, plus their adolescent bull offspring, and maybe the zoo thought that it would be too much to have two young calves in close proximity. Even at Melbourne, there have been other non-breeding cows in the herd, in Kulab and Mek Kapah.
A calf from Anjalee sired by Pathi Harn would be valuable either way as the calf would be unrelated to the Gung/Thong Dee line, and therefore offspring of Dokkoon and Numoi sired by Luk Chai at Melbourne/Werribee. However, given Gung is a very proven bull, I would see the value in pairing him with Anjalee in the first instance.
Yes that’s correct. Porntip was prioritised for breeding in 2008 following the news Thong Dee had conceived. The 1.4 elephants were all housed together for the first two years, so it’s not surprise Gung and Thong Dee conceived; but considering the lack of precedent in the region for breeding elephants, I doubt it was something they were banking on/planning for (versus the two adult cows being a priority to breed).
It’s deeply regrettable that Heman died in December 2006 without contributing to the AI programme, but there simply wasn’t time. Aside from Bong Su being conditioned for AI, a female calf would have been ideal as a breeding partner for Gung. I recall the zoo commenting in an article the plan was to produce calves from different bloodlines for the sake of genetic diversity/future breeding.
There was a delay in Porntip conceiving the second time around. There was at least one unsuccessful attempt at AI that I’m aware of and there may well have been others. This appears to explain the gap between her birth and Thong Dee’s. The age gap wasn’t ideal, with Sabai being a hindrance in Kanlaya’s early months. I doubt they’d replicate this again through choice.
Gung is a founder, so I’d anticipate him breeding with Anjalee unless they prove incompatible.