Companion Animals Flashcards
What is life stage nutrition?
The practice of feeding diets designed to meet optimal nutritional needs at a specific age or physiologic state.
Feeding above or below this range can negatively impact on animal performance or health.
How do you calculate RER?
RER(kcal ME/d) = 70 x (BW)^0.75
RER(kJ ME/d) = 293 x (BW)^0.75
What is the aim when feeding young adult dogs and what are the main problems that may be encountered?
1-7yo
Problems - periodontal disease and obesity
Aim - maximise longevity and quality of life (disease prevention)
BCS - 2.5-3.5/5
Evaluate BSC and adjust energy as needed.
Obesity occurs twice as often in…..
neutered dogs
Is fibre a good energy source for dogs?
No - as fibre content increases, energy density decreases.
However, increased dietary fibre promotes satiety-may be useful for obese dogs or dogs fed free choice.
What are the essential FA required by a dog?
Linoleic and alpha-linolenic acids
Deficiency results in hyper proliferation and increased permeability to water (both skin defects)
What are the objectives of feeding reproducing dogs and puppies?
Optimse conception, number of pups per litter, ability of the bitch to deliver, viability of prenatal and neonatal pups, BCS 3/5 (underweight or overweight animals have decreased ovulation rates and silent oestrus, reduced litter size and milk production).
How much weight does a pregnant bitch gain prior to whelping?
15-20%BW, 5-10% remain after whelping.
What can obesity cause in pregnant bitches?
Dystocia, prolonged parturition, hypoxic pups.
What can malnutrition cause in pregnant bitches?
Embryo loss, poor foetal development and low birth weight of pups.
When does most weight gain occur in pregnant bitches?
After 40d gestation - due to rapid growth of foetuses.
What considerations are there when feeding pregnant bitches?
Foetal demand for docosahexaenoic acid (DHA/omega 3 FA) for retinal and brain development.
Energy needs to peak at 30% above adult maintenance for bitches with smaller litter, 50-60% for larger litters.
Giant breeds may not ingest enough food to maintain BW in late gestation.
Protein in late gestation - 40-70% increase above maintenance. (7g digestible protein/kg BW^0.75)
High quality protein - 10g digestible protein/MJ.
Fat levels can be higher in later pregnancy to increase energy density of diet.
50% of energy for foetal development supplied by glucose.
Need CHO source or risk weight loss, decreased food intake, reduced birth weight and neonatal survival, increased risk of still birth.
Increased risk of hypoglycaemia and ketosis during late pregnancy.
20% of energy from NSC.
Ca and P increase by 60%.
Excessive Ca can decrease PTH, predisposing bitch to eclampsia during lactation.
Diet digestibility should be >85% due to increasing nutrient needs and reduced intake from abdominal fill.
Common to feed puppy food - except for giant breeds as it is not adequate.
What are some important considerations when feeding lactating bitches?
Energy requirements steadily increase and peak between 3-5weeks.
Return to maintenance @8weeks.
High energy density feeds - 16.7kJ (4kcal) ME/g DM
Weight loss causes decreased milk production and signs of severe exhaustion.
Protein requirement increases more than energy requirement
Protein-energy ratio of 10:15g protein/MJ DE
What is low birth weight highly correlated to?
Neonatal mortality
How should pups be fed from birth?
Ensure they all receive colostrum - weak pups should be supplementary fed colostrum.
Weight daily to monitor growth rate - gives indication of milk production and whether it is adequate.
Should not loose or fail to gain weight for more than 1 day.
Milk should meet all of the pups requirements for first 3-4weeks.
How can orphaned pups be fed?
Bottlefeeding is preferred method - needs to happen at least 4 times daily.
Very young neonates and weak pups should be fed every 2-4hrs.
Older pups 4-6hrs.
Normally, 1-2wk old pups will obtain most of their normal daily intake in 4-5meals.
Recommended DER:
Day 1-3: 15kcal ME/100g BW
Day 4-6: 20kcal ME/100g BW
Day >6: 20-25kcal ME/100g BW
What nutritional changes need to occur for weaning?
Gradual processing beginning with the introduction of solid foods at 3-4wks.
Milk production progressively declines as pups intake of solid food increases.
Complete weaning by 8-10wks, less stressful
Can use dams food, blend with warm water. Otherwise ensure high quality ‘growing
ration used.
Gradually decrease amount of water used.
Fresh drinking water should be supplied from 3wks.
How should growing pups, post weaning be fed?
Feed to grow at an optimal rate for bone development and body condition.
Feeding for maximum growth increases risk of skeletal deformities and decrease longevity.
Small to medium breeds reach 50% of adult weight at 4months.
Large to giant breeds reach 50% of adult weight at 5 months.
BCS should be assessed at least every 2 weeks - best practical indicator of healthy growth.
Prevention of obesity is essential
Foods formulated for adults should not be fed to dogs
Arginine essential AA
DHA essential for growth - at least 0.02% of diet.
How should large breed pups be fed to avoid diseases such as hip dysplasia and OCD?
Affected by genetics, environment and nutrition.
Excess energy and/or too much Ca during rapid skeletal development leads to abnormal bone and cartilage growth.
Need to control growth rate by dietary manipulation (feed restriction)
Avoid excess Ca
Foods for large and giant breed puppies should contain 0.7-1.2%Ca per kg DM
How should racing dogs be fed?
Greater capacity for fat oxidation - metabolise FFA at twice the rate of humans.
Energy requirements increase with endurance rather than speed - approximately 600kJ/kgBW^0.75/d
24% ME from protein
Between 30-50% ME from CHO
Energy content provided by ration of 40-42% CHO: 22-24% CP: 30-33% fat
Advantage to high fat diet - gains in speed and endurance.
What are some important considerations when feeding a mature dog?
Less active so require less energy to meet needs.
Maintaining ideal BW still important.
More prone to dehydration - osmoregulatory disturbances, medication and chronic renal failure.
Thyroid function may be impaired.
12-13% decrease in DER by 7yrs.
Low fat intake helps prevent obesity however can be useful in very old dogs who loose weight easily (increases energy intake, improves palatability, improves protein use).
Omega 3 FA - maintains skin, coat health, joint health and cognitive function also helps dogs with kidney disease .
Increased fibre intake - helps with constipation, dilutes energy content. Decreased postprandial glycaemic effects in diabetic dogs.
Reduced protein intake due to increased prevalence of renal disease.
Avoid excessive P for renal function as well.
Joint health - add glucosamine and chondroitin
No free choice for obese or overweight - can be used for thinner very old animals.
What are cats?
Strict/true carnivores (unlike dogs).
How many meals should a cat eat per day? What kind of foods do they prefer?
10-12
Very sensitive to physical form, odour and taste - prefer solid moist foods, reluctant to accept powdery, sticky or greasy textures.
How should young adult cats be fed?
1-7yo
Ideal BCS 2.5-3.5/5
Dietary fat - energy, essential FA and facilitates absorption of vitamin A.
Don’t require dietary fibre - small amounts can enhance stool quality and promote GIT function. Can also reduce energy density and induce satiety.
Obese prone may benefit from 5-15% crude fibre and cats that prone to hairballs.
Taurine essential AA - 0.1-0.17%DM
P - key factor in urolith formation.
Prone to hypertension - avoid excess Na
NaCl can be supplemented to increase water intake - reduces lower UTI - ensure no excess
Free choice food maintains a more stable urinary pH - reduces risk of struvite and UTI.
Ca - deficiency when only fed meat
Ca:P = 1:1
High protein increases K requirement (>0.52% DM).
What are some general considerations when feeding cats?
Limited capacity to adapt to low protein - meeting minimum requirements is critical - no benefit from feeding excess.
P - key factor in urolith formation.
Most cats tolerate once daily feeding - preferable to feed at least twice a day.
When is the best age for breeding queens?
1-7 years
What is often the most limiting nutrient during gestation?
Energy
What is the effect of protein deficiency on gestation?
Lower birth weight, higher neonatal mortality and impaired immunocompetance in kittens.
Why is free-choice feeding preferred for gestating queens?
Allows them to adjust food intake as needed to meet requirements.
Also preferred for lactation.
When are the highest energy requirements for lactation?
Peak lactation - 3-4wks post partum
Peak energy demand however is at 6-7wks post partum.
Why should queens not have excessive weight loss post birth?
Can lead to lactation failure.
How should queens be fed during lactation?
Animal based proteins preferred - more digestible and contain taurine.
Dietary omega-3 FA required for normal development of retinal function in nursing kittens.
Digestible CHO and spare protein used for blood glucose and provide a substrate for lactose during milk production.
CHO 10% DM
Discuss the feeding of post weaned, growing kittens.
Grow 100g/wk until @ 20wks
Growth rate slows as kittens approach 80% of adult size at 30wks.
Adult BW at 40wks
Aim for optimal growth rather than maximal growth.
Protein requirements high at weaning then decrease gradually.
Require >19% animal protein to provide sufficient S congaing AA.
High protein foods (56%CP) must contain arginine at 1.5 x requirement - maintains normal urea cycling.
18-35% fat enhances palatability, meets EFA and maintains energy density above or at 4kcal ME/g
Need DHA for neural, retinal and auditory development.
Ca deficiency and P excess common in all meat diets - need supplement
What are some important considerations when feeding mature cats?
Age related diseases increase at 7-8yrs.
Less active - less energy.
Aging impairs thirst sensitivity - dehydration - reduces ability to thermorgulate
Declining renal function - increased water losses due to impaired urine concentrating ability.
Moist foods are good - increase water intake
Very old require energy dense foods and ample levels of EFA - maintain normal skin and coat condition.
Fat digestion declines with age - essential FA required at levels above that of young cats.
Fibre (<5%) aids constipation, above this level decreases DM digestibility and dilutes energy. Good for inactive or obese cats.
Dont restrict dietary protein - improves palatability, intake and weight maintenance in very old cats.
Moderate Ca (0.6-1%DM) maintains bone mass, reduces risk of Ca oxalate urolithiasis.
Reduced P - associated with kidney disease
Avoid excess Na
Highly palatable and digestible feeds - >4kcal/g DM
Free choice or meal feed.
What is the difference between overweight and obese?
Overweight - exceeds optimal body weight by 5-10%
Obese - exceeds optimal BW by 15-20%
Why do animals gain weight?
Caloric intake, decreased physical activity and genetic susceptibility.