April 24 2012
The August 10 Artificial Breeding column on page 490 highlighted a new reproduction protocol sheet created by the Dairy Cattle Reproduction Council. It is available on their website, www.dcrcouncil.org,...
April 24 2012
Those who actively manage your farm's A.I. breeding program and read my column already know that reproduction is a key factor to farm profitability. You also realize that, in many cases, reproductive performance...
April 24 2012
If you have been A.I. breeding cows for some time, you understand that many factors influence the success of each insemination, not the least of which is cleanliness of the equipment used in the process....
April 23 2012
Probably among the best-known lines in English literature are from William Shakespeare's Hamlet's soliloquy: "To be, or not to be, that is the question." As dairy producers, you probably ask a similar...
April 23 2012
Achieving excellent reproductive performance is a critical goal for any dairy enterprise because reproductive efficiency drives overall profitability. Although numerous factors affect reproductive performance,...
April 23 2012
Dairy producers who achieve reasonably good pregnancy rates can always benefit from improved heat detection. Even for those who apply timed A.I. protocols to program ovulation before first or repeat inseminations...
April 20 2012
I have had the privilege to visit a number of dairy farms during my lifetime. Without a doubt, dairy farmers are friendly and interested in learning new concepts. During my travels, I have benefitted greatly...
April 20 2012
Ultrasynch - a simpler program to breed cows. Improved preg rates has been just one positive result of using ultrasynch, reports Dave Stanton of Saylor Dairy (left) and Stevie Braun of COBA Select Sires...
April 20 2012
In 1989, a major breakthrough in sperm sexing was reported by USDA scientists in rabbits. Insemination of rabbit does with Y-chromosome-bearing sperm resulted in 81 percent males, whereas insemination...
April 18 2012
Many dairy farmers turned sour on sexed semen as 2009 unfolded. The reasons were obvious: Cash flows reduced discretionary spending, and sexed semen was viewed as discretionary, $30 more a straw compared...
April 18 2012
Reproductive failure is the number one reason for involuntary culling. The economic importance of getting cows pregnant in a timely manner is, thus, no surprise. Fertility decline is a combination of many...
April 16 2012
This disagreeable problem takes its toll on fresh cows. Identifying at-risk cows is your first challenge. The goal of your fresh cow program should be to get early peak milks while quickly returning cows...
April 16 2012
When was the last time you or your A.I. technicians had an A.I. refresher course? A.I. breeding is not like riding a bicycle - once you master the skill of cycling you have no need of a refresher course....
April 16 2012
Oh, how things have changed in the last 125 years! Although no one now living was alive in 1885, we have good evidence that dairy cattle reproduction in 2010 is very different - not the biological processes...
April 16 2012
Reproduction drives the dairy farm business. Not only does it determine peak milk production but it drives the operation's long-term replacement pipeline. Dirt lots when well managed (dry, with soft surfaces,...
April 12 2012
What's the best timed A.I. program? There are so many synchronization programs that can be used on my dairy herd. My question for a future Artificial Breeding column is which synchronization program would...
April 12 2012
Research papers focused on heifer-specific reproductive issues were presented at the 103rd annual meeting of the American Dairy Science Association in Montreal, Quebec, Canada. In this review, we will...
April 5 2012
How you can identify and correct abnormal calving positions. That heifer is definitely in labor. Sometimes you can just tell. She is straining and looks uncomfortable. Plus, there has been little progress...
April 5 2012
Learn what you can about calving now before it is too late. Two clean, white tips of hooves are peaking out of the rear end of your 4-H heifer. Soon, a pink nose starts to come. It is her first calf, and...
April 5 2012
Traditionally, bull fertility is difficult to evaluate in the laboratory, although many attempts have been made to assess differences among bulls. Part of this difficulty exists because sperm are exposed...
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