Feeding Management of Breeding Stock Flashcards
(27 cards)
stallions were previously fed like what?
maintenance horses
the new NRC says that stallions have increased DE requirements when?
difference between breeding and nonbreeding
what is the target BCS for stallions?
5-6
if a stallion is under-conditioned what can occur?
infertility and poor libido
if a stallion is over-conditioned what can occur?
laminitis/metabolic disorders
infertility, progressive motility of sperm, DNA fragmentation
selenium can be useful how for stallion fertility?
antioxidant, testosterone production and semen quality (give 3 mg/d)
how are omega 3s useful for stallion fertility?
sperm motility, resistance to cold shock and fertilization capacity
what trace minerals are important for stallion fertility and what do they do?
Zn- spermatogenesis, testosterone production and secretion and sperm motility
Cu-libidio and semen quality
What are the major concerns of the mare ?
Energy and protein
What are the 3 energy requirements of the mare?
First 8 months gestation
Last 3 months gestation
Lactation
What is critical for mareS?
BCS
What BCS do we want mares at? and what are the benefits?
6- cycle earlier, fewer cycles per conception, higher pregnancy rate, maintain pregnancy easier
Is there a benefit of having a mare at a BCS of 7 or higher for repro?
No, more costly to feed
How does overnutrition in late gestation mares influence the fetus?
Increases baseline insulin, foals have larger spleen and testes (which are delayed in maturation)
Give the breakdown of broodmares
Open vs. maiden
Pregnant vs. gestating (1st-3rd trimester)
Lactating (early vs. late)
Open or maiden mares are fed how?
To maintenance requirements
Open or maiden mares can get their nutrition primarily how?
Quality forages and/or concentrates added
How should open or maiden mares enter the breeding season BCS wise?
5-7
Why does a Mare/s DMI decrease during late gestation?
They are out of gut room
How do pregnant mares need to be fed?
To maintenance requirements
Gradually increase concentrates to avoid colic
Balance protein and minerals carefully
At what month of the lactation cycle do mares have the highest energy and CP requirements?
1 month
The NCR shows requirements beginning to increase when with pregnant mares?
5 months assuming the mare enters at BCS 6
Early lactation requires increases in what?
Energy, CP, and Ca
What things can influence milk production?
Diet and BCS
Obesity=decreased
