Topic 13 Flashcards
1
Q
Muscular hypertrophy
A
muscle enlargement
in cattle
Myostatin gene mutation: recessive or maternal imprinting
Cattle: chromosome nr 2
2
Q
Callypige
A
larger rump
in sheep
Maternal genomic printing
Chromosome 18
3
Q
double muscling
A
born with more muscle fibers leading to larger muscles
-> better meat, more tender
caused by callypige and muscular hypertrophy
- increased dystocia, reduced fertility, often in Belgian blue cattle
4
Q
thermotolerance in cattle
A
slower growth, lower fertility and poor meat quality –> global warming!
Thermotolerance genes: HSP70 (heat shock protein)
Thermot. Cattle breeds: Braman, Senepol, Romosinuano
5
Q
Stress sensitivity in swine:
A
PSS (porhine stress syndrome)
RYR1 (ryanoid receptor gene)
On 6th chromosome
Symptoms: seizure, tremors, heart stops
