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Veterinary Nursing Key Mathematical Concepts: Dietary Requirements

Apply key mathematical concepts to successfully complete routine calculations required by veterinary nurses

Videos

Animal Care Technologies (2007) videos:

DoveLewis Emergency Animal Hospital (2013) video: Nutrition in the Critically Ill (50mins)

All videos via Veterinary Education in Video database

Tables: Calculating Energy Requirements

Table - Energy Requirements of healthy dogs during different lifestages as a factor of the resting energy requirement.
(Adapted from: Gajanayake, Lumbis, Greet and Girling, 2011, p. 329, fig. 13.28)

Lifestyle Energy Requirement (x RER)
Adulthood Entire 1.8
Neutered 1.6
Sedentary 1.0
Light Exercise 2.0
Moderate Exercise 3.0
Heavy Exercise 4-8
Obese-prone 1.4
Senior 1.4
 
Breeding Pregnancy - first 2/3 1.8
Pregnancy - final 1/3 3.0
Lactation 1.9 x RER + 25% per puppy
 
Growth <4months of age 3.0
50-80% of adult weight 2.5
>80% adult weight 1.8 x 2.0

Brown, R 2012, Week 4 BVN111 Mathematical concepts, modified Meg Dietze, Theory notes, NMIT, Melbourne, VIC.

 

Table - Energy Requirements of healthy cats during different lifestages as a factor of the resting energy requirement (RER).
Adapted from: Gajanayake, Lumbis, Greet and Girling, 2011, p. 329, fig. 13.29

Lifestage Energy Requirement (x RER)
Adulthood Entire 1.4-1.6
Neutered 1.2-1.4
Obese - prone, sedentary 0.8-1.0
Senior (>7-8 years) 1.1-1.4
Geriatric (>10-12 years) 1.6
 
Breeding Early pregnancy 1.6
At parturition 2.0
Lactation 2.0-6.0
 
Growth Growth 2.5

Brown, R 2012, Week 4 BVN111 Mathematical concepts, modified Meg Dietze, Theory notes, NMIT, Melbourne, VIC.

Table - The effects of various forms of disease on the energy requirements of animals
Adapted from Moore and Palmer, 2001, Table 4.1, Loc 1053

Condition Energy Requirement (x RER)
Cage rest 1.2
Surgery/trauma 1.3
Multiple surgeries/trauma episodes 1.5
Infection (sepsis)/cancer (neoplasia) 1.7
Burns/scalding 2.0

Brown, R 2012, Week 4 BVN111 Mathematical concepts, modified Meg Dietze, Theory notes, NMIT, Melbourne, VIC.

Converting from kilocalories to kilojoules
To convert between kilocalories to kilojoules, multiply the calorie value by 4.2
Basal Energy Requirement (BER)

For dogs weighing more than 5kg
BER (kcal) = 30 x body weight (BW) + 70

 

For cats and dogs weighing less than 5kg
BER (kcal) = 60 x body weight (BW)

Maintenance energy requirement (MER)

MER (kcal) = BER x 1.8

Brown, R 2012, Week 4 BVN111 Mathematical concepts, modified Meg Dietze, Theory notes, NMIT, Melbourne, VIC.