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Effect of Different Levels of L-carnitine and Excess Lysine-Methionine on Broiler Performance, Carcass Characteristics, Blood Constituents, Immunity and Triiodothyronine Hormone

Author

Listed:
  • Vincenzo Tufarelli

    (Department of DETO, Section of Veterinary Science and Animal Production, University of Bari ‘Aldo Moro’, Valenzano, 70010 Bari, Italy)

  • Hooman Mehrzad-Gilmalek

    (Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht 41335-3516, Iran)

  • Mehrdad Bouyeh

    (Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht 41335-3516, Iran)

  • Ali Qotbi

    (Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht 41335-3516, Iran)

  • Hossein Amouei

    (Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht 41335-3516, Iran)

  • Alireza Seidavi

    (Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht 41335-3516, Iran)

  • Erwin Paz

    (Laboratory of Animal Production, Faculty of Agriculture and Forestry, Universidad de La Frontera, Temuco 01145, Chile)

  • Vito Laudadio

    (Laboratory of Animal Production, Faculty of Agriculture and Forestry, Universidad de La Frontera, Temuco 01145, Chile)

Abstract

The influence of dietary L-carnitine and lysine (Lys)-methionine (Met) levels on productive performance, haematology and triiodothyronine hormone levels of broilers was investigated. Dietary treatments included different L-carnitine (0, 50 and 100 mg/kg) and Lys-Met (0%, 10% and 20% over National Research Council (NRC) (1994) recommendation levels), under a 3 × 3 factorial design arrangement. From the findings, the body weight (BW) gain, feed intake and feed conversion ratio (FCR) of broilers were significantly ( p < 0.05) influenced by dietary treatments in the different growing stages. Conversely, carcass yield and organs did not differ ( p > 0.05) among treatments, whereas meat-cuts varied significantly when broilers were fed experimental diets. Moreover, the dietary inclusion of the highest levels of amino-acids (L-carnitine (100 mg/kg) and Lys-Met (+20%)) produced a reduction ( p < 0.05) of blood uric acid, also leading to the highest triiodothyronine (T3) hormone levels. Based on the obtained results, it can be concluded that the combination of extra levels of L-carnitine associated with Lys-Met positively influenced the performance traits in broiler chickens.

Suggested Citation

  • Vincenzo Tufarelli & Hooman Mehrzad-Gilmalek & Mehrdad Bouyeh & Ali Qotbi & Hossein Amouei & Alireza Seidavi & Erwin Paz & Vito Laudadio, 2020. "Effect of Different Levels of L-carnitine and Excess Lysine-Methionine on Broiler Performance, Carcass Characteristics, Blood Constituents, Immunity and Triiodothyronine Hormone," Agriculture, MDPI, vol. 10(4), pages 1-8, April.
    • Handle: RePEc:gam:jagris:v:10:y:2020:i:4:p:138-:d:349844
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