Body condition is a visual and subjective assessment which comes naturally to stockmen/women. Good body condition is achieved by a combination of the nutritional program, management and the environment. With ostrich, there remains a lack of experience on how to fully recognise a healthy body condition.
The subject of Body Condition Scoring (BSC) was referenced in Ostrich at a conference in Hengelo in 1996 or 1997. Whilst body condition scoring is an excellent guide, the problem at the time was that experience in ostrich was still limited and therefore it was not possible to set any meaningful standards.
Breeder condition will change during the breeder season. The aim of the off season is to rebuild their body reserves so they start the breeder season in top condition. Figure 1 is an illustration of body condition scoring for Dairy Cattle. These illustrations are taken from Pennsylvania State University web page, but there are many examples available.
Figure 2 is a similar photo of comparative ostrich hens. Comparing these two hens, it is clear which bird will have the resources to withstand a productive breeder season. The hen on the left was fed a ration that was mainly grain based, with limited vitamins and minerals and some straw. The hen on the right received rations that are of high nutrient value that included alfalfa, maize, soyameal with high levels of supplemented vitamins and minerals.
The condition of ostrich of any age should be evaluated using the normal criteria of judging good health of which body condition is just one component. It is important to understand the difference in a bird in good condition with plenty of muscle as opposed to a bird that is carrying too much fat. Signs to look for with ostrich are such as things as:
- General Alertness: At all ages the birds should look bright and alert. Ostrich are extremely good at camouflaging poor health so as not to alert predators.
- Bright Eyes
- Good Health
- Glossy Feathers
- Good feather Cover: Free from feather pecking but some mating wear is normal during the breeding season
- Rounded well-muscled body
- Well-muscled thighs
- Strong legs
- Freedom from any defects: e.g: bowed legs, twisted legs
- Good appetite
Apart from visual inspection, the way to physically assess the body condition of ostrich:
Quote: When the backbone at the highest place on the bird’s back is protruding above the surrounding flesh, the bird is too thin. When the backbone at the highest place on the bird’s back is indented below the surrounding flesh, the bird is too fat and needs decreased feed—or a different feed formulation. The optimum Body Condition is when the backbone at the highest point on their back is perfectly even with the surrounding flesh End Quote 
 Daryl Holle Body Condition is Most Important