Nutrient and E requirements of sport and racing horses, Stallions; feeding and nutrition

Question 1

Feeding of breeding stallions (6)

Answer 1

1. Feed maint until 2 wks before breeding, then supplement aa’s and vits and mins
2. Max of 2.2-2.5kg per 100kgBW which roughly equates to 10-15kg per day
3. Low starch abd high fat to incr the E efficiency and decr starch overload
4. Vit A,C,E, Se and antiox to protect the sperm cells from antiox damage
5. Min of 1kg of forage
6. Max: 0.75kg of conc per 100kg bw

Question 2

Nutrient content for maint vs 2 wks before mating (6)

Answer 2

• DE MJ: 71 vs 102
• DCP (g): 330 vs 850
• CF%: 16-18 vs lower
• Ca (g): 23 vs 47
• P(g): 14 vs 40
• NaCl (g/100kg): 10-15

Question 3

Feeding of the work horse: what are the 2 important points to mention

Answer 3

• NOT to be fed reserve for future events- only acc to immediate needs
• Divided into 3 groups acc to the intensity of work

Question 4

Feeding of the work horse acc to the intensity of work (6)

Answer 4

Light vs med vs hard work

• Hrs of work: 1-3 vs 3-5 vs 5-8
• DE % incr: 25 vs 50 vs 100
• Forage:conc ratio: 65:35 vs 50:50 vs 35:65
• DM (kg per 100kgbw): 1.5-2.25 vs 1.75-2.5 vs 2.25-3
• MJ/day (500kg): 90 vs 110 vs 140
• BCS: 5-6 vs 5 vs 4-5

Question 5

Feeding of the work horse, the 2 nutrients to mention

Answer 5

Protein

Fats

*and how to prevent myoglibinuria

Question 6

Feeding of the workhorse: protein (4)

Answer 6

• 12-16% around 700g/horse
• 9.5 x DE (max 940g/day)
• Work has little effect on protein requirement therefore the required value is similar to maint
• Can have adverse effects:
  
  • Heat prod
  • Acid-base balance
  • NH3 acc- resp problems

Question 7

Fats (3)

Answer 7

• 8-10%
• Incr glycogen stores of the muscles
• Incr E density of the ration

Question 8

How to prevent myoglobinuria

Answer 8

Walk the horse

Incr forage intake and

decr conc intake

Question 9

Feed supplements and salt

Answer 9

1. Minerals: Ca, P and Mg—- BONES
2. Vitamins: E and C—- ANTIOX
3. Electrolytes: 1% NaCl in conc– to compensate for the salt loss through sweating

Question 10

Example diets: hobby horse (6)

Answer 10

• Only needs nutrition to cover maint, therefore NO CONC
• 10kg of feed per day
• 5kg of meadow hay
• 1kg of alfalfa
• 0.5kg of molasses
• Straw

Question 11

Example diets: racehorse (7)

Answer 11

• E is NB
• Give small amounts frequently
• 20kg of feed per day
• 8kg of grass
• 6kg of hay
• 5kg of conc
• vit and mins