Sheep and Goat Genetics Part 1: Dominant and Recessive Genes. Horns and Coloration Explained.
Vložit
- čas přidán 19. 03. 2021
- Sheep and Goat Genetics Part 1: Dominant and Recessive Genes. Horns and Coloration Explained. In this introductory video, Tim teaches us about dominant and recessive genes in sheep and goats and how they are important. Dominant and recessive genes play an important part in determining everything from color to horns. Part 1 of our genetics series lays the foundation for videos to come and helps viewers to review information about genetics they may not know or may not have seen for a while.
#linessafarms #genetics #smallfarm #coloredgoat #blacksheep
Check us out on Facebook at:
/ linessafarmsllc
Also, we have started a new Facebook Group to further help instruct and assist our friends and customers! Check out Linessa Farms' Tack Box!
Check out Linessa Farms Tack Box Group at:
/ linessafarmsllc
Contact us anytime at:
Website:
www.linessafarms.com
Email:
customerservice@linessafarms.com
Call or Text:
219.869.7524
Regardless if you are new to raising sheep and goats, considering raising sheep and goats, a hobby farmer, or a seasoned producer, this video has something for you! Improve your skills and learn something new with Linessa Farms, LLC today!
All our videos at Linessa Farms, LLC are made specifically for viewers like you. If you have any questions, please feel free to contact us and we will make a video to help answer your question if applicable! Feel free to contact us any time at www.linessafarms.com
Please subscribe! Check out our other videos at www.linessafarms.com
Be sure to check us out on Instagram at linessa_farms
If you have questions or would like us to make a video for you, please feel free to contact us anytime at customerservice@linessafarms.com
Thanks again for watching!
Make sure to check out our other videos for great tips regarding sheep, goats, hobby farms, and more! - Jak na to + styl
New subscriber getting caught up on your videos. I really appreciated this; it's been a while since I looked at this
Thanks Jordan. We try to make videos with lots of info and not too much fluff.
Super helpful! I’ve been trying to learn about St Croix sheep and I noticed one of the associations allows color and one doesn’t. Now I better understand why. We are still trying to decide on a livestock conservancy breed. Thanks, you’ve got a new subscriber!
Hello Amanda! Thanks for watching our videos and thank you for the comment. There are plenty of heritage breeds available to meet any needs. We would advise determining what your goals are and go from there. We aren’t fans of the St. Croix breed due to poor body weight and poor feed conversion ratios but they do have the benefit of prolificacy. If you are looking for a hair breed that will produce a good carcass, we would advise going with Dorper or Katahdin. Thanks again for watching and if you have any other questions let us know.
Thanks
Thank you for watching our videos and for the kind comment. 👍🏻
U are awsum🙂
Well, thank you very much! We appreciate the kind words!
How much do we know at supernumerary test and genetics? From what I can find, it is polygenic. But is it dominant or recessive trait?
The inheritance of supernumerary teats in sheep and goats is not straightforwardly classified as either dominant or recessive due to its polygenic nature. This means that the trait is influenced by multiple genes, and its expression can be affected by various factors, including the combination of alleles an individual inherits from its parents, as well as possible environmental influences.
In polygenic traits, multiple genes contribute to the phenotype (observable characteristics), and each gene can have a small additive effect. Therefore, the presence of supernumerary teats does not follow a simple Mendelian pattern of inheritance where traits are classified strictly as dominant or recessive. Instead, the expression of this trait results from the interaction of several genes, each contributing to the likelihood of the trait's occurrence.
Research in this area may identify specific genes that have a more significant influence on the trait, and over time, patterns might emerge that suggest certain genetic tendencies toward dominance or recessiveness in the context of those specific genes. However, as of the last comprehensive studies, the genetic control of supernumerary teats in these animals remains complex, and a clear-cut classification into dominant or recessive categories is not applicable.
Nice video
Thank you for watching our videos and thank you for the kind words.
Welcom sir
Do you do any coverate on QQ, RR, or Q and R genes
czcams.com/video/Sx3FuFg_A34/video.html
Hello Good morning.
Do You guys have books about goats or sheep farming ?
Hello. We do not at this time but we plan on posting weekly articles on our website very soon.
Hello sir,
In Eye colour which is dominant and recessive. I have seen White and Blue Colour In some Goats
Hello. In our video we are using people/humans as the example. In humans, brown is dominant and blue is recessive. In goats, blue eyes are dominant. Thanks for watching our videos and thanks for taking the time to send us a question!
Not sure if I missed it or not, but is the Polled always Dominant? White always dominant? And how do I know which is actually dominant in other gene colours?
Hello! Polled is dominant in both sheep and goats. White wool is dominant as well. We have bred many white face rams over black faced ewes and ended up with white faced lambs. There is some give and take and you never really know what the genes of the sheep you are breeding really are… but, as a rule of thumb, yes. White wool and polling are both dominant. Goat color is a whole other monster that is not nearly as easy to explain.
Si, is the horned gene always recessive?
The inheritance of the horned trait in sheep is generally governed by a genetic locus where the presence of horns is typically a dominant trait. This means that if a sheep inherits one copy of the horned gene from either parent, it will express the trait. The absence of horns is usually recessive. However, specific genetic factors and breeds can influence the inheritance patterns, so variations may exist.
How will you know what their recessive gene are if you dont have any history of their parents?
There are many well documented recessive genes in sheep, if you see any of the recessive manifestations, you know both parents are carriers. This can be difficult because some breeders might not even know they have these genes in their flock. In other cases, genetic testing can be completed to determine if your animal is a carrier. Often, this is done. An example would be scrapie testing.
There are many recessive genes in sheep, and their prevalence varies depending on the breed and population. However, some of the most common recessive genes in sheep include:
Ovine Progressive Pneumonia (OPP) susceptibility: OPP is a viral disease that affects the lungs of sheep, and it is caused by the Maedi-Visna virus. Some sheep breeds are more susceptible to this disease due to a recessive gene.
Spider Lamb Syndrome (SLS): SLS is a genetic defect that affects the skeletal system of sheep, causing abnormal bone growth and deformities. It is caused by a recessive gene and is most common in certain breeds, such as the Columbia and Suffolk.
Polledness: Polled sheep are those without horns. The absence of horns is controlled by a recessive gene, and some breeds, such as Dorset, Hampshire, and Suffolk, have a relatively high prevalence of this gene.
Scrapie susceptibility: Scrapie is a prion disease that affects the nervous system of sheep. Some sheep breeds are more susceptible to this disease due to a recessive gene.
Blue-eyed White (BEW) coloration: BEW is a recessive trait that causes sheep to have white wool and blue eyes. This coloration is most commonly found in certain breeds, such as the Cheviot and Texel.
There are several recessive genes that have been identified in goats. The most common recessive genes in goats include:
Polled gene (P): The polled gene is responsible for the absence of horns in goats. This is a desirable trait in many breeds of goats, and the gene is often selected for in breeding programs.
Dwarfism gene (DW): The dwarfism gene is responsible for a condition called chondrodysplasia, which results in a shortened and distorted body structure. This gene is typically undesirable in breeding programs.
Mulefoot gene (MF): The mulefoot gene is responsible for a condition called mulefoot, which is a deformity of the hooves. This gene is also undesirable in breeding programs.
Blue-eyed gene (BE): The blue-eyed gene is responsible for blue eyes in goats. While this trait is often desirable in some breeds, it can also be associated with deafness and is therefore carefully monitored in breeding programs.
Polycerate gene (PC): The polycerate gene is responsible for the presence of extra horns or scurs in goats. While this trait can be desirable in some breeds, it is typically avoided in breeding programs.
It's important to note that the prevalence of these genes can vary depending on the breed of goat and the region in which they are found. Additionally, there may be other recessive genes in goats that have not yet been identified or studied in detail.