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Hill's Science Plan Perfect Digestion Large Breed Adult 1+ Dog Food with Chicken and Brown Rice – —

Hill's Science Plan

Hill's Science Plan Perfect Digestion Large Breed Adult 1+ Dog Food with Chicken and Brown Rice review

37.6/100Average
DryAdultSenior

A large-breed kibble with a named fibre blend at its centre: ActivBiome+ Digestion at 4%, its five parts printed. It sits in our Average band, held there by a cereal-heavy base. For a big dog whose stools firm up on it, the blend has done the job it was put there for.

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Our view

Likely to suit

  • Large-breed adults from a year old with an unsettled gut
  • Owners who want a fibre blend declared with a percentage and its components
  • Big dogs suited by moderate fat, at 11.7%
  • A dosed mineral panel, zinc at 147 mg and iron at 83.7 mg per kilo

Worth watching

  • Wheat and maize in the first two places
  • Animal fat and digest unnamed, which a strict exclusion diet needs
  • Carbohydrate at 59.3% of dry matter, against 46.2% for a typical dry food

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

How this scores

How we score
37.6/100Average
Protein and processingPoor
Nutritional balancePoor
TransparencyGood
ValueAverage

The details

Dog fit

Listed for large-breed adults and seniors. A large dog eats considerably more than a 15kg one, so start from the label's feeding table and let condition settle the rest.

Food type

Dry

Life stage

Adult, Senior

Breed size

Large

Main protein

Chicken

The score, in context
  1. Hill's Science Plan Perfect Digestion Large Breed Adult 1+ Dog Food with Chicken and Brown Rice 37.6

All one Average. Typical dry food: Good.

Cereal leads and named poultry stops at 10%, which sets the distance from the typical dry food; the declared fibre blend is more than most digestive kibbles commit to.

What's in it
  • Wheat, maizeSet the carbohydrate load.
  • Chicken and turkey meal6% chicken, 10% total poultryRendered and dried, so more protein than fresh meat at the same share.
  • Animal fatThe main energy source, no animal given.
  • DigestThe palatant, equally unspecific.
  • Broken rice
  • Maize protein mealPlant protein concentrate doing part of the meat's job.
  • Brown rice, barley, oats4%, 3.2%, 3.2%A wide spread of starches.
  • Ground pecan shell, dried beet pulp, flaxseed, dried citrus pulp, dried cranberries4% as a blendActivBiome+ Digestion. Pecan shell adds bulk, beet pulp ferments gently, citrus and cranberry bring soluble fibre.
  • Minerals

Iron, iodine, copper, manganese, zinc and selenium dosed per kilo, with a natural antioxidant.

No glucosamine or chondroitin source on a large-breed label.

Named ingredients

Wheat, maize, chicken and turkey meal (chicken 6%; total poultry 10%), animal fat, digest, broken rice, maize protein meal, brown rice (4%), barley (3.2%), oats (3.2%), ground pecan shell, minerals, dried beet pulp, flaxseed, dried citrus pulp, dried cranberries. ActivBiome+ Digestion prebiotic blend (4%): Ground pecan shell, dried beet pulp, flaxseed, dried citrus pulp, dried cranberries.
Against the range

One large-breed adult kibble. Wheat and maize lead, with broken rice, brown rice, barley and oats behind. The animal protein is a chicken and turkey meal at 10% total poultry, 6% of it chicken, with maize protein meal adding plant protein. Animal fat and digest name no animal. The ActivBiome+ Digestion blend is declared at 4% with all five parts named.

Nutritional analysis

Declared analysis

Energy
352.4 kcal/100g
Protein

18.4%

Fat

11.7%

Fibre

2.6%

Ash

4.8%

Moisture

8%

Dry weight

Protein

20%

Fat

12.7%

Fibre

2.8%

Ash

5.2%

Carbs

59.3%

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

19.3%

Carbs

70.5%

Oils

4.4%

Other

5.8%

Pricing & size
Price per kilo
£5.00 (RRP)
Pack
14 kg
A 15kg dog eats (our estimate)
215 to 260 g a day, 240 in the middle
Cost per day, 15kg dog
£1.20

A mid-range price, set slightly above the analysis.

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