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Information Journal Paper

Title

A New Precision– Fed Chick Assay for Determining True Metabolizable Energy Values of some Poultry Feed Ingredients for Broiler Chickens

Pages

  103-111

Abstract

 Two experiments were conducted to determine: first, the best time of excreta collection after force feeding of broilers to yield the maximal amount of excreta, and second, nitrogen-corrected true metabolizable en-ergy contents of some poultry feedstuffs including yellow corn, soybean meal, corn gluten meal, canola meal and poultry by-product meal by a new precision-fed chick assay using 3-week-old broiler chicks. In experiment one, thirty-five 21-d-old male broiler chicks, with the same body weight were randomly as-signed in to 7 experimental groups with 5 birds per each. Seven experimental treatments were designed with different excreta collection times. All chicks were precision-fed with 10 g of corn-soybean meal (60: 40) mixture. Excreta were collected at 2, 4, 6, 8, 10, 12, and 14 h after precision feeding. In experiment two, thirty 21-d old male broiler chicks with 5 chicks per each feed ingredients were precision-fed by 10 g of experimental feedstuffs and 5 chicks fasted for determining endogenous energy losses. The maximum time of excreta collection for 3-week-old male broiler chicks was approximately 12 h after precision feed-ing. The average nitrogen-corrected true metabolizable energy values of yellow corn, soybean meal, corn gluten meal, canola meal and poultry by-product meal, were 3527. 55, 2572. 4, 4183. 25, 1806. 38 and 2678. 06 kcal/kg, respectively. In conclusion, nitrogen-corrected true metabolizable energy values of feed-stuffs can be determined in 3-week-old broiler chicks by using a precision-fed assay. This research suggests using energy values obtained on young broiler chicks in formulating diets for the same birds.

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    APA: Copy

    REZAEI, A., JANMOHAMMADI, H., Olyayee, M., & ALIJANI, S.. (2020). A New Precision– Fed Chick Assay for Determining True Metabolizable Energy Values of some Poultry Feed Ingredients for Broiler Chickens. IRANIAN JOURNAL OF APPLIED ANIMAL SCIENCE, 10(1), 103-111. SID. https://sid.ir/paper/785781/en

    Vancouver: Copy

    REZAEI A., JANMOHAMMADI H., Olyayee M., ALIJANI S.. A New Precision– Fed Chick Assay for Determining True Metabolizable Energy Values of some Poultry Feed Ingredients for Broiler Chickens. IRANIAN JOURNAL OF APPLIED ANIMAL SCIENCE[Internet]. 2020;10(1):103-111. Available from: https://sid.ir/paper/785781/en

    IEEE: Copy

    A. REZAEI, H. JANMOHAMMADI, M. Olyayee, and S. ALIJANI, “A New Precision– Fed Chick Assay for Determining True Metabolizable Energy Values of some Poultry Feed Ingredients for Broiler Chickens,” IRANIAN JOURNAL OF APPLIED ANIMAL SCIENCE, vol. 10, no. 1, pp. 103–111, 2020, [Online]. Available: https://sid.ir/paper/785781/en

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