alexa Comparison of three different diets for organic broilers: effects on performance and body condition.
Food & Nutrition

Food & Nutrition

Journal of Probiotics & Health

Author(s): Rodenburg TB, van Harn J, van Krimpen MM, Ruis MA, Vermeij I,

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Abstract 1. The aim of this study was to assess the feasibility of 100\% organic feed for organic broilers by comparing it with 80\% organic feed (situation at the time of the experiment; 2004) and 95\% organic feed (alternative). 2. Diets were optimised for nutritional value, allowing a maximum 10\% increase in feed price when using 100\% organic feedstuffs. This could only be achieved at the expense of the methionine content. 3. The birds were reared from 0 to 3 weeks of age in a broiler house in three groups of 500 broilers each on either an 80, a 95 or a 100\% organic starter diet. At 3 weeks of age, they were transferred to 15 pens with an outdoor run. Each treatment group of 500 birds was divided into 5 groups of 95 and given an 80, a 95 or a 100\% organic finisher diet. 4. Broilers receiving 100\% organic feed reached a lower body weight and grew more slowly than those receiving 95\% organic feed, mainly because of a lower feed intake. 5. Broilers on 95 or 100\% organic feed had a higher incidence of breast blisters than broilers receiving 80\% organic feed. 6. The cost price for meat from broilers that received 80\% organic feed was euro1.83 per kg live weight. The cost prices for broilers that received 95 and 100\% organic feed were euro1.84 (+0.8\%) and euro1.93 (+5.4\%) per kg live weight, respectively. 7. In conclusion, 95\% organic feed led to a better performance than 100\% organic feed in this study. Probably, the lower methionine content in the 100\% organic feed negatively affected performance. The results for 95\% organic feed were similar to 80\% organic feed, except for a higher incidence of breast blisters. This article was published in Br Poult Sci and referenced in Journal of Probiotics & Health

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