Related Experiment Video
Updated: Oct 19, 2025

13:42
Clinical Examination Protocol to Detect Atypical and Classical Scrapie in Sheep
Published on: January 19, 2014
13.4K
New Insight into the Prevalence and Risk Factors for Three Distinct Hoof Conformation Traits in UK Commercial Sheep
Caroline M Best1, Janet Roden1, Kate Phillips1
1Department of Veterinary Health & Animal Sciences, Harper Adams University, Newport, Shropshire TF10 8NB, UK.
Veterinary Sciences
|September 26, 2021
Summary
Sheep hoof conformation issues are common, affecting over 90% of feet and contributing to lameness. Understanding these multifactorial traits is crucial for improving sheep health and welfare.
Area of Science:
- Veterinary Science
- Animal Health
- Sheep Production
Background:
- Lameness in sheep is a significant global concern impacting animal welfare and farm economics.
- Damaged, misshapen, or overgrown sheep hooves are primary causes of lameness.
- Predisposing factors for specific hoof conformation traits in sheep are not well understood.
Purpose of the Study:
- To investigate the prevalence of three distinct hoof conformation traits in sheep.
- To identify risk factors associated with sole/heel, hoof wall, and hoof overgrowth traits.
- To provide insights into the multifactorial causes of sheep hoof conformation.
Main Methods:
- Exploratory study involving 400 ewes across four UK commercial sheep farms.
- Hoof inspections conducted at four time points over a 12-month period.
- A four-point ordinal scoring system used for individual claws and calculated foot-level scores.
Main Results:
- Over 92% of observed sheep feet exhibited at least one hoof conformation trait.
- While correlated, each conformation trait had unique associated sheep-, foot-, and farm-level factors.
- The study identified key insights into the complex etiology of hoof conformation.
Conclusions:
- Hoof conformation traits are highly prevalent in commercial sheep flocks.
- Multiple factors contribute to the development of adverse hoof conformation.
- Results form a basis for future research into preventing hoof problems in sheep.
Related Concept Videos
Trihybrid Crosses
24.3K
Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
24.3K
Heritability
369
Heritability is a statistical concept that measures the degree to which genetic differences among individuals contribute to trait variations within a population. It is a fundamental idea in genetics, often prone to misinterpretation. Heritability is expressed as a percentage, reflecting the proportion of variation in a specific trait across a population that can be linked to genetic differences. However, it's important to understand that heritability does not determine how "genetic"...
369
Cloning of Dolly the Sheep
5.3K
The first successfully cloned mammal was Dolly, a sheep, born on 5th July 1996 at Roslin Institute, Scotland. The cloned sheep was named after the American singer Dolly Parton. Dolly lived for seven years and died of respiratory complications, which is speculated to be due to the actual age of her DNA. Because the DNA in cloned cells belongs to an older individual, the cloned individual’s life expectancy may be affected. Indeed, analysis of Dolly’s DNA revealed shorter...
5.3K
X-linked Traits
55.9K
In most mammalian species, females have two X sex chromosomes and males have an X and Y. As a result, mutations on the X chromosome in females may be masked by the presence of a normal allele on the second X. In contrast, a mutation on the X chromosome in males more often causes observable biological defects, as there is no normal X to compensate. Trait variations arising from mutations on the X chromosome are called “X-linked”.
55.9K
Incomplete Dominance
27.7K
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
27.7K
Epistasis
48.1K
In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
48.1K

