Hill’s Science Plan Adult Sterilised Cat Dry Food with Chicken is a dry formula for neutered adult cats (1–6 years) that targets lean body maintenance, digestive health, and urinary support.

The first ingredient is chicken and turkey meal (with 14% chicken; total poultry 23%), providing concentrated animal protein to sustain lean muscle after sterilization.

Additional protein from maize protein meal and pea protein boosts overall protein levels, while the animal-first ingredient helps deliver essential amino acids cats need for muscle maintenance.

At 31.8% crude protein, 10% fat, and 3569 kcal/kg ME, the calorie profile is geared toward weight control in less active sterilized cats without sacrificing muscle-supporting protein.

L-carnitine at 527.1 ppm supports fat metabolism and helps preserve lean mass during weight management.

The ActivBiome Multi-Benefit approach uses prebiotic fibers (oat bran and fructo-oligosaccharides) to nourish beneficial gut bacteria, supporting regular stools, digestive comfort, and immune resilience through antioxidant support.

Controlled minerals—calcium 0.82%, phosphorus 0.69%, and magnesium 0.082%—help support a healthy urinary environment by limiting excess mineral concentration in urine.

Taurine at 0.28% supports normal heart function and vision, while omega-6 (2.38%) and omega-3 (0.39%) fatty acids from fish oil and plant oils contribute to skin and coat health.

Antioxidant vitamins and carotenoids, including vitamin E (527 IU/kg), vitamin C (96 ppm), and beta-carotene (1.85 ppm), help protect cells from oxidative stress.

The recipe also emphasizes L-lysine to support vitality by contributing to protein synthesis and maintenance of lean muscle, and it is not recommended for kittens or pregnant/nursing cats per the brand’s guidance.

Pros:

• Meat-first protein foundation: Chicken and turkey meal as the first ingredient delivers concentrated animal protein to maintain lean muscle in sterilized adults.

• Weight management support: 10% fat, 3569 kcal/kg ME, and added L-carnitine (527.1 ppm) work together to support fat metabolism and a healthy body condition.

• Urinary system care: Controlled minerals—calcium 0.82%, phosphorus 0.69%, magnesium 0.082%—help reduce excess mineral load that can challenge urinary tract health.

• Digestive microbiome support: Oat bran and fructo-oligosaccharides feed beneficial gut bacteria, aiding stool quality and digestive comfort within the ActivBiome Multi-Benefit concept.

• Antioxidant and skin-coat nutrition: Vitamin E (527 IU/kg), vitamin C (96 ppm), beta-carotene (1.85 ppm), and omega-6/omega-3 fats support antioxidant defenses, healthy skin, and a glossy coat.

• Taurine for heart and vision: A 0.28% taurine level supports cardiac function and normal eyesight in adult cats.

Cons:

• High carbohydrate proportion: At 45.8% NFE, the diet is relatively carb-heavy, which may not align with owners seeking a lower-carbohydrate approach for their cats.

• Grain-forward recipe: Maize, broken rice, and wheat feature prominently, which may not suit cats with known grain sensitivities.

• Plant-sourced proteins included: Maize protein meal and pea protein contribute to total protein, which may not appeal to those looking for exclusively animal-derived protein.

• Unspecified animal fat and “digest”: The lack of species specificity can be problematic for cats with diagnosed food allergies requiring precise ingredient disclosure.

• Low crude fiber: At 1.1% fiber, the formula provides limited bulk for fullness, so satiety depends more on portion control and feeding management.

• No live probiotics listed: The recipe relies on prebiotics rather than declaring added live probiotic cultures.