I am so excited - we are getting our milk cow tomorrow!!! She comes with a purebred jersey calf who is 6 weeks old, and the current owner said she had her preg checked today and they say she is 4 mos bred - woohoo! I've heard mixed opinions about keeping the jersey calf to breed her next time, but we're leaning toward doing that, as we know no one around here with jerseys, and no one who does AI. If she really is 4 mos bred, the current calf (he is not hers, so there's no inbreeding) will be 6 months or so when she freshens again. Would he be old enough to breed her a few months later, when he is 8 months or so? That seems like it would be ideal if it would work - what do you think? At what age can a jersey bull breed a jersey/guernsey cow?
Mama to 8 wonderful boys and one sweet girl
Katika is a big Canadienne cow, count back from when Hope was born (a day or 2 ago) and Hugh, the bull is 19 months, so he bred a great big cow at 9 months old. I'd say 11 mo is a safe bet but it could be a bit sooner!
(has been SallyMA, and SallyCA in prior years.)
I don't know about dairy bulls, but beef breeds are considered fertile when their scrotal circumference is about 28 cm (11 inches or so). My dh thought I was crazy when I measured our Dexter bull monthly, he hit the target size and a month later had everything bred. I think he was 10-11 months.
Live fully. Love life. Go play outside. It works for me!
Post by buxombeefcowdairy on Feb 1, 2008 22:59:38 GMT -5
To be safe, I would assume 10 to 12 months. He may be able to do the job earlier.
He needs to hit puberty to begin producing sperm, and then those sperm cells take 60 days or so to mature in his reproductive tract. Puberty in cattle is determined by age and weight, (apart from genetic factors among different breeds- Jerseys are early). So, if at 9 to 10 months, if he is underweight, he will take longer to reach puberty. Conversely, if he is growing really well and a bit heavy for his age at 7 or 8 months, he may hit puberty early.
If you have other female cattle around, he is very likely upon reaching puberty to get them bred, as well. Electric fence is about the only thing (short of a box stall designed for a horse) that will keep him separate.
199 Angus Beef cows, 1 Jersey cow 3 horses One Border Collie
Post by texasjerseys on Feb 2, 2008 19:47:30 GMT -5
We put a miniature bull (40") in with our full size jerseys. He was 12 months old and very short compared to our full size jerseys. He stayed with them 3 months and the result is we now have 4 full size cows bred by him. They are due in the spring. He was loaned to us free and had never bred before that. He got the job done well.
By the way, it was funny watching him try to mount them. He would hop continously and give it one final hop and literally fall to the ground in a lump and lay there. He exhausted himself but it paid off!!!!
barnmom: WOW There is so much reading on milkers
May 28, 2015 16:20:23 GMT -5
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