Important trends & numbers Flashcards
Piglet: BW at birth
1-2kg
Piglet: Age & BW at the start of weaning
- 28 days
- 7-9kg
Piglet: Age & BW when given starter feed
- 42 days
- 13kg
Piglet: Age & BW when given piglet diet
- 70 days
- 20-25kg
Stages of nutrition for piglets from birth
- Milk
- Creep feed (Milk + Prestarter)
- Weaning → Prestarter
- Starter
- Piglet diet
Piglet: FI (feed intake) required to start a piglet diet
1 - 1.2 kg/day
Piglet: Age & BW when piglets are chosen for their line (fattening/gilts)
- 90 days
- 25-30kg
Piglet: From pre-starter diet → piglet diet, give the trend of:
- CP %
- DE (MJ/kg)
- CP %: ↓
- DE (MJ/kg): →
Piglet: Give the trend of Lysine (%) requirement with BW
As BW ↑ = Lysine requirement ↓
Piglet: How much pre starter is eaten during suckling?
1kg
Piglet: When are antibodies no longer absorbed from the colostrum?
24-35hrs after birth
When is colostrum produced by the sow?
10hrs before birth → 36hrs after farrowing
What is the relationship of P to Ca in sow colostrum
P > Ca (Because piglets require more P)
Piglet: Give the trend of Calcium requirement from the point of birth
From birth → 2w old
Calcium requirement ↑
Piglet: Iron supplement required a few days after birth
200mg IM
Piglet: Age of weaning using the traditional system
8 Weeks
Piglet: Age of weaning using the segregated early weaning
2 weeks
Piglet weaning systems: Which has the highest and lowest solid feed consumption?
- Traditional system (highest)
- Recent system (usual)
- Segregated early weaning (lowest)
Piglet: Describe the trend of digestive enzyme levels from the point of birth
- All increase from birth → weaning
- Weaning: 10 day critical period: Levels drop
- Levels increase again
Piglet: Trend of piglet feeds from BW 3-5kg → 120kg for
- CP %
- DE (MJ/kg)
- CP %: ↓
- DE (MJ/kg): →
Piglet: DM consumption/day
3-4% BW
Feeding & nutrition of replacement gilts starts at…
- 90 days of age
- 25-30kg BW
Age & BW of pigs sold for: Pork production
- 16 Weeks
- 60-75kg
Age & BW of pigs sold for: Bacon
- 22 weeks
- 80-85 kg
Age & BW of pigs sold as: Heavy hog
- 27 weeks
- 90-120 kg
Water requirement for: 20-60 kg pig
4 l/day
Water requirement for: 60-115 kg pig
5.5 l/day
As the BW of a pig ↑, describe the:
- Feed intake (% of BW)
- Average daily growth
- Feed intake (% of BW): ↓
- Average daily growth: ↑
Describe the trend from growing → finishing pig feed for:
- DM %
- CP %
- DE (MJ/kg)
- DM %: →
- CP %: ↓
- DE (MJ/kg): →
From what point does pig feed stop being Ad libitum for fattening pigs?
50kg BW
Feed is then controlled
Give the Protein : Energy ratio requirement for fattening pigs
- Initially: 14g : 1 MJ
- 30-50kgbw: 12g : 1 MJ
Feeding & nutrition of fattening pigs starts at…
- 90 days of age
- 25-30kg BW
Feeding & nutrition of fattening pigs ends at…
- 180 days
- 120kg BW
Dietary fat requirement for a fattening pig
3% DM (not too much though)
The proportion of linoleic acid in the fattening pig’s diet will … with BW
Increase
Timing of replacement gilt’s:
- First preselection
- Second preselection
- First preselection: 90 days / 25-30 kg
- Second preselection: 140 days / 80-90 kg
When is puberty for the replacement gilt?
170 days
Give the following parameters for phase 1 of high lean gilt rationing:
- BW (kg)
- Back fat (mm)
- Feeding strategy (kg/day)
- BW (kg): 25-60
- Back fat (mm): <7
- Feeding strategy (kg/day): Ad lib
Give the following parameters for phase 2 of high lean gilt rationing:
- BW (kg)
- Back fat (mm)
- Feeding strategy (kg/day)
- BW (kg): 60-125
- Back fat (mm): 7-16
- Feeding strategy (kg/day): 1.8-2.2
Give the following parameters for phase 3 of high lean gilt rationing:
- BW (kg)
- Back fat (mm)
- Feeding strategy (kg/day)
- BW (kg): 125-140
- Back fat (mm): 16-18
- Feeding strategy (kg/day): Ad lib
Give the following parameters for phase 4 of high lean gilt rationing:
- BW (kg)
- Back fat (mm)
- Feeding strategy (kg/day)
- BW (kg): Early gestation
- Back fat (mm): 18-20
- Feeding strategy (kg/day): 1.8-2.0
Nutrient requirements for industrial average replacement gilts:
- CP %
- DE (MJ/kg)
- CP %: 14-16
- DE (MJ/kg): 13
Nutrient requirements for lean replacement gilts:
- CP %
- DE (MJ/kg)
- CP %: 13-14 (lower than average)
- DE (MJ/kg): 14 (higher than average)
Replacement gilt: BW & age at first heat
- BW: 110 kg
- Age: 190 days
Replacement gilt: BW & age at insemination (2nd/3rd heat)
- BW: 140 kg
- Age: 210 days
The period of flushing in replacement gilts occurs in which BW range?
125-140kg
Gilt: Flushing requires how much feed/day?
3.5 kg/day
When does flushing of replacement gilts occur?
11-14 days prior to insemination
How long is the gestation period for sows?
114 days (3m, 3w, 3d)
Give the following parameters of a sow at the point of insemination:
- Age (days)
- BW (kg)
- Back fat (mm)
- Age (days): 200-220
- BW (kg): 135-150
- Back fat (mm): 16-18
Give the following parameters of a sow at the point of parturition:
- Age (days)
- BW (kg)
- Back fat (mm)
- Age (days): 315
- BW (kg): 170-180
- Back fat (mm): 18-20
Give the feed required for a pregnant sow:
- Day 0→4
- Day 4→30
- Day 30→90
- Day 90→112
- Day 112→113
- Day 113→114
- Day 0→4: 1.8-2.3 kg/day
- Day 4→30: Feed according to BCS
- Day 30→90: 1.8-2.3 kg/day
- Day 90→112: 2.7-3.6 kg/day
- Day 112→113: 2.5-3.0 kg/day
- Day 113→114: 1.0-1.8 kg/day (liquid)
Composition of the pregnant sow diet:
- CP %
- DE (MJ/kg)
- CF%
- Lysine
- CP %: 13.5
- DE (MJ/kg): 14.2
- CF%: 10
- Lysine: 0.6
How long is the lactation period for a sow?
28 days
Give the feed requirement of the lactating sow:
- Day 0
- Day 1
- Day 2
- Day 3
- Day 4
- Day 5
- Days 6-28
- Day 28 (weaning)
- Heat
- Day 0: Low appetite
- Day 1: 2-2.5 kg/day
- Day 2: +1 kg/day
- Day 3: +1 kg/day
- Day 4: +1 kg/day
- Day 5: +1 kg/day
- Days 6-28: Ad libitum
- Day 28 (weaning): 4 kg/day
- Heat: 1.5-2 kg/day
Give the back fat thickness of a lactating sow
18-20mm
Give the nutritional requirement of the lactating sow:
- CP %
- Energy (MJ/kg)
- Lysine %
- CP %: 18-19
- Energy (MJ/kg): 14.2
- Lysine %: 1.0
Give the required water supply and temperature for a lactating sow
- 2 litres/minute (of 40 litres/day)
- 18°C
Give the nutritional value of sow milk
- CP%
- DM%
- Fat%
- CP%: 3
- DM%: 18
- Fat%: 7.5
Give the DMI for a horse
1.5% of BW (e.g 7.5kg for a 500kg horse)
Give the DE requirement for a horse
70 MJ/day (0.14xBW(kg))
Give the protein requirement for horse
690g/day (9.5 x DE)
Give the CF requirement for a horse
16-18%
Give the Ca requirement for a horse
4 g/100bwkg (≈20g/day)
Give the P requirement for a horse
3 g/bwkg (≈15 g/day)
Give the Ca:P ratio requirement for horse
1.5-2 : 1
Give the water requirement for horse
5 litres/100kgbw or 2 litres/kgDM
(≈25 litres/day)
Give the ideal BCS for a horse
Breed & use dependent:
BCS 4 (racehorse) → BCS 6 (dressage/brood mare)
Give the daily mass of pasture eaten by a horse
35-50kg/day
Give the daily mass of silage eaten by a horse per day
10 kg/day
Give the Forage : Concentrate ratio for:
- Light work horse
- Moderate work horse
- Intense work horse
- Light work horse: 65:35
- Moderate work horse: 50:50
- Intense work horse: 35:65
Harder working horses need more concentrate than forage
Give the minimal daily hay requirement for horse
1.5-2% BW (≈10kg for a 500kg horse)
Give the gestation period for the mare
330-360 days
Optimum BCS for mare
6 (6.5→8 on the internet)
Give the DE (MJ/kg) requirement for a pregnant mare during:
- First 8 months gestation
- Month 9 gestation
- Month 10 gestation
- Month 11 gestation
- First 8 months: Maintenance (70 MJ/day)
- Month 9: +10% (77 MJ/day)
- Month 10: +15% (88.5 MJ/day)
- Month 11: +20% (106.3 MJ/day)
CP requirement for the pregnant mare
CP (g/day) = 10.5 x DE
Ranges from 750g/day → 970g/day (11mo.)
Give the feed intake for the pregnant mare:
- Month 0→8
- Month 9→11
- Month 0→8: 1.5-2kg forage + 0.5kg concentrate
- Month 9→11: 0.5-1kg forage + 1-1.5kg concentrate
During pregnancy: Forages ↓; Concentrates ↑
How long is the mare’s lactation period?
≈5-6 months
Give the quantity of milk produced per day for the mare
12-18 kg/day
(Peak during month 2 of lactation)
Give the composition of mare milk:
- DM%
- CP%
- Fat%
- Lactose%
- DM%: 10.4
- CP%: 2.2
- Fat%: 1.6
- Lactose%: 6.4
Mare: Give the nutritional requirement for lactation: Energy
DEl = 3.3 MJ DE/kg milk produced
Mare: Give the nutritional requirement for lactation: Protein (DCP)
- Month 0→3 lactation
- Month 3→6 lactation
- Month 0→3 lactation: 12 x DE
- Month 3→6 lactation: 11 x DE
Forage stays the same, while concentrates ↓ from month 3
Give the amount of milk consumed by a foal
Starts from 20-25% BW → 17-20%BW
Over a space of 5 weeks
Give the birth weight of the foal
Usually 10% of the adult’s BW
This doubles after 2 weeks
When does creep feed of foals start?
2-3 weeks of age
Simple cereals/pelleted feeds
Weaning the foal: How much oat would you give a 4month old foal?
4 litres of oat
Increases proportionally with age
Weaning of the foal occurs when…
- Age is 5-6 months
- It weighs 40-45% of its adult weight
What is the foal fed at the point of weaning
1kg concentrate + 2.5kg hay/day
Give the CP requirement of foal at:
- Weaning
- 1 years old
- 2 years old
- Weaning: DE x 12 (14% CP)
- 1 years old: DE x 11
- 2 years old: DE x 10
Give the concentrate intake for a foal at:
- 3 months
- 6 month
- 12 months
- 18 months
- 24 months
- 3 months: 1-2 %BW
- 6 month: 2-3 %BW
- 12 months: 1-2 %BW
- 18 months: 1-1.5 %BW
- 24 months: 1-1.5 %BW
Give the forage intake for a foal at:
- 3 months
- 6 month
- 12 months
- 18 months
- 24 months
- 3 months: 0
- 6 month: 0.5-1 %BW
- 12 months: 1-1.5 %BW
- 18 months: 1-1.5 %BW
- 24 months: 1-1.5 %BW
At 1 year, what should the weight of foal be?
60% of the mother’s weight (to prevent DOD)
Ca:P Ratio requirement for foal
1.5-2 : 1
BW of a foal aged 2 weeks
100kg
BW of a foal aged 12 months
60% of adult weight
Max weight of feed for a breeding stallion
2.5kg/100kgbw (≈15kg)
NaCl requirement for a breeding stallion
10-15 g/100kg
Work horse: Forage : Concentrate ratio for:
- Light work
- Medium work
- Hard work
- Light work: 65/35
- Medium work: 50/50
- Hard work: 35/65
Work horse: DM requirement for:
- Light work
- Medium work
- Hard work
- Light work: 1.5-2.25 kg/100kgbw
- Medium work: 1.75-2.5 kg/100kgbw
- Hard work: 2.25-3 kg/100kgbw
Work horse: Protein requirement
12-16%
Work horse: Fat requirement
8-10%
Work horse: Main minerals required
Ca/P/Mg → Bone
Work horse: Main vitamins required
E & C → Antioxidant role