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Hill's Science Plan Adult 1-5 Large – —

Hill's Science Plan

Hill's Science Plan Adult 1-5 Large review

42.8/100Average
DryAdult

An Average grain-led kibble for big dogs in their prime, with maize and wheat ahead of the poultry. It earns its place on the joint side, pork cartilage and a crustacean shell hydrolysate both in the recipe, and the poultry percentages are printed in full.

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Our view

Likely to suit

  • Large-breed adults between one and five, the window the bag names
  • Owners who want joint ingredients in the food itself
  • Dogs that thrive on poultry, at 15% in total
  • Big dogs with an active routine; energy runs to 368 kcal per 100g

Worth watching

  • Maize and wheat in the first two places, if wheat has upset your dog before
  • Animal fat and digest with no species named, plus shellfish from the glucosamine source
  • Low fibre at 1.7% of dry matter

Written by our editorial team. Independent guidance, not veterinary advice.

How this scores

How we score
42.8/100Average
Protein and processingAverage
Nutritional balanceAverage
TransparencyGood
ValueAverage

The details

Dog fit

Listed for large adults aged one to five. This is not a lean recipe, so measure portions in a quiet week; the label's chart reaches 640 grams a day for an 80kg dog.

Food type

Dry

Life stage

Adult

Breed size

Large

Main protein

Chicken

The score, in context
  1. Hill's Science Plan Adult 1-5 Large 42.8

All one Average. Typical dry food: Good.

Grain in the first two places costs it far more than anything in the analysis does.

What's in it
  • MaizeDigestible once cooked.
  • WheatThe grain an intolerance story usually comes back to.
  • Chicken and turkey meal10% chicken, 15% poultryA dried meal, so the share survives into the kibble.
  • Animal fatNo animal named.
  • Broken rice
  • DigestThe palatant, species unstated.
  • Maize protein meal, soybean mealPlant protein on top of the grain.
  • Vegetable oil, dried beet pulp, minerals, flaxseedThe oil names no plant.
  • Oat bran, fructo-oligosaccharides (ActivBiome+)0.6%Prebiotic fibres for the gut's own bacteria.
  • Pork cartilage, crustacean shell hydrolysateChondroitin and glucosamine sources, with no dose printed for either.

Zinc, iron, copper, manganese, iodine and selenium dosed per kilo in print, with a natural antioxidant.

The glucosamine comes from crustacean shell, so this is not shellfish free.

Named ingredients

Maize, wheat, chicken and turkey meal (chicken 10%; total poultry 15%), animal fat, broken rice, digest, maize protein meal, soybean meal, vegetable oil, dried beet pulp, minerals, flaxseed, oat bran, fructo-oligosaccharides, pork cartilage (source of chondroitin sulphate), crustacean shell hydrolysate (source of glucosamine). ActivBiome+ Multi Benefit prebiotic blend (0.6%): Oat bran, fructo-oligosaccharides.
Against the range

Nutritional analysis

Declared analysis

Energy
368.2 kcal/100g
Protein

23.2%

Fat

14.4%

Fibre

1.6%

Ash

5.2%

Moisture

8%

Dry weight

Protein

25.2%

Fat

15.7%

Fibre

1.7%

Ash

5.7%

Carbs

51.7%

As-fed composition

Estimated breakdown of the finished product by ingredient category, from the declared ingredient list and ingoing weights. These are estimates, not measurements.

Meat

20.2%

Carbs

72.7%

Oils

5.7%

Other

1.4%

Pricing & size
Price per kilo
£4.29 (RRP)
Pack
18 kg, 14 kg, 2.5 kg
A 15kg dog eats (our estimate)
220 to 265 g a day, 245 in the middle
Cost per day, 15kg dog
£1.05

Large-breed dogs usually weigh well over the 15kg our daily figure assumes, so expect the real cost to run higher.

Middle of the market for a dry food, and you pay a little more than the analysis alone would justify.

Ingredients and nutrition are taken from manufacturer data. Retailer pricing is not yet live for this food.

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Reviewed by Off the Leash Editorial

Last updated 28 August 2026