Consistency is an ideal for most herds.
But how to achieve this ideal while keeping inbreeding coefficients within a "safe" level?
This post will review the strategies that I've used and a new one that I plan to use in the coming years.
For those who like to cut to the chase, I've included a series of photos and videos showing the progression of two different pregnancies in the Jan 11 entry. I've also added a couple of early ultrasounds (25 and 26 days) in the January 16 entry.
Since this is an ongoing learning process that is far from complete, I've decided to write this blog in diary format. Given that the format is less formal, be advised that I may do a bit of swearing here and there.
There are sections on resources and takeaways at the bottom of the blog.
What she didn't see were the tears shed in frustration; the nagging self-doubt; the long hours struggling to meet a goal; or the number of times that I fell down, dusted myself off, and went back to work. There's a name for this in the field of education, it's called a growth mindset. I can't do that, YET.
I learned about growth mindset fairly recently. I had just been raised to be goal oriented. Set a goal, work like heck to meet it, and then set a new goal. Then, when I was working on my Ph.D. I focused on something that I had learned from a senior professor: the candidates who graduate aren't the most intelligent, they are the most persistent. Persistent I can do.
But what does that have to do with goats?
Linear Appraisal scores can be tough to analyze. Oftentimes, linear appraisal explanations only further mystify the situation. The reasons are simple, Linear Appraisers are not trained educators. They are trained evaluators. This is an important distinction.
There is another problem. Linear Appraisers are under strict time constraints. Rushed evaluations can result in validity errors (in case you haven't read my bio, I'm a retired educational researcher, data and validity are my grooves). One possible error is the halo effect, where the evaluation (negative or positive) of one of an individual's traits affects the evaluation of the other traits. This error is common in all forms of evaluation.
I see that less with seasoned appraisers. They may have a bone to pick (e.g., rumps), but that bone doesn't affect their evaluation of the goat's other traits. Over the years, owners usually figure out what any particular appraiser's personal bone (or soapbox) is, and mentally adjust for that when looking at the scores. It's not a big deal because it didn't bias the evaluation of the other traits.
Moreover, a rushed appraisal, coupled with limited opportunities to record the interaction, typically results in an incomplete understanding of the basis for a particular score. I've been doing this for over a decade now and I still look at my scores and try to figure out why one animal got a "Good Plus" in Shoulder Assembly while another animal got a "Very Good."
In this article, I'm going to go back to the basics, the ADGA Scorecard. The goal of this article is to empower owners to independently evaluate their goats and to be able to tease out what aspects of the shoulder assembly may need improvement. To accomplish this, I'm going to use photos of goats from my own herd.
This is a hard blog for me to write for many reasons.
First, the dairy goat community is unforgiving where disease outbreaks are concerned. That may not be obvious to people who are new to the community, but if you've been here for a while, you've heard the gossip and maybe even been encouraged to boycott this farm or that farm because of rumors of disease. The following are two examples that I have experienced directly.
All domestic animals have been subject to inbreeding during their periods of breed formation. Breed formation for Nigerian Dwarf goats began when small goats were imported from Africa between the 1930s and 1950s. These were primarily zoo animals per the Livestock Conservancy. Nigerian Dwarf goats were first recognized as a breed by the American Goat Society in 1981. The American Dairy Goat Association did not recognize the breed, by creating a purebred herdbook, until 2005. Thus, It is a breed that has gone through the development process fairly recently (1950s-1980s). Nigerians did not graduate from the Livestock Conservancy's priority list until 2013. Since then, the breed has exploded in popularity, especially among hobby farmers. Along the way there has been a resurgence in inbreeding with the goal of concentrating the genetics of popular sires and dams.
Let's start with a nice, soothing photo of my beloved Leia and her 2020 kid, Barbarella.
Marie-France Orillion, Ph.D.
Welcome to my blog! I am a retired researcher/university administrator. Since I'm a bit of a workaholic (my other addiction is sugar), I've embarked on a second career as an elementary school teacher. When I'm not working I enjoy playing with my goats and my gardens. This blog is a place where I reflect on what I've learned along the way.