Honestly Roatary50, I don't know the reason why our conception rate is where it is, nor does my dad, the AI technician, the vet, or the cake rep. All I can tell you is how our system works - we feed baled grass silage in front of feed barriers, 1 bale every 3 metres, and keep it pushed up until it is all gone, we feed an 18% high starch cake in the parlour, with ad-lib minerals and salt licks in the cubicle house. In the summer, the silage is replaced with grass, with some buffer fed silage. We wait 90 days after calving until first service, and use the national company beginning with G, we us one bull on the friesians, most hold to first service, they will get a second chance to AI - same bull, and if not in calf, the go and live with Charlie for a while
, but this doesn't happen very often. I rate the AI technician highly, he is quick, reliable, regular on time, does a good job, and is a thorougly nice chap, having said that, the conception rate from the relief's is the same, so they must do a good job as well.
At a fairly recent discussion group, heat detection aids were being discussed, and I was very surprised that we were the only farm not using any - granted, we had the smallest herd as well -, but our cows seem to come bulling well, and everyone on the farm - My dad, myself, and 1 part time worker - is told that if they see a cow bulling, drop what they are doing and identify the cow - sometimes a pain, especially if the same cow is bulling 20 times in a day, but has to be done. If they are due for service, they will be AI'd the following morning, once only.
The only thing we can put it down to is genetics, we are a purebred British Friesian herd, and fertility has been considered for over 30 years now, so hopefully that is paying off. The cows look, short, fat and black, and are a nightmare to body condition score - our vet put a fresh calver at 4.75BCS over the winter. We were not entirely convinced, and presented him with a barren cow to prove the point, he admitted, if the fresh calver was 4.75, the barrener was at least 7(on a scale of 1-5).
Admittedly, average yield is approx 5800, but fat and protein is high, as is conception rate and submission rate, bull calves are valuable, heifers worth a small fortune, we get very little foot trouble - 3 feet over the winter, and the cows just look happy and healthy, which to us is worth a lot.
Hope you are well
Dan