open access publication

Article, 2023

Effect of Cyberlindnera jadinii yeast on growth performance, nutrient digestibility, and gut health of broiler chickens from 1 to 34 d of age

Poultry Science, ISSN 1525-3171, 0032-5791, Volume 102, 12, Page 103127, 10.1016/j.psj.2023.103127

Contributors

Itani, Khaled [1] Marcussen, Caroline 0000-0001-9582-8860 [2] Rocha, Sérgio Domingos Cardoso 0000-0003-1162-1104 [1] Kathiresan, Purushothaman [1] Mydland, Liv Torunn 0000-0002-9361-3687 [1] Press, Charles Mclean 0000-0002-1649-1583 [1] Xie, Zhuqing 0000-0002-8323-4472 [2] Tauson, Anne-Helene 0000-0002-6402-7240 [1] [2] Øverland, Margareth 0000-0003-1142-6624 (Corresponding author) [1]

Affiliations

  1. [1] Norwegian University of Life Sciences
    2. [NORA names: Norway; Europe, Non-EU; Nordic; OECD];
  2. [2] University of Copenhagen
    3. [NORA names: KU University of Copenhagen; University; Denmark; Europe, EU; Nordic; OECD]

Abstract

The effect of dietary graded levels of Cyberlindnera jadinii yeast (C. jadinii) on growth performance, nutrient digestibility, and gut health of broilers was evaluated from 1 to 34 d of age. A total of 360 male broiler chicks were randomly allocated to 1 of 4 dietary treatments (6 replicate pens each) consisting of a wheat-soybean meal-based pelleted diet (Control or CJ0), and 3 diets in which 10% (CJ10), 20% (CJ20), and 30% (CJ30) of the crude protein were supplied by C. jadinii, by gradually replacing protein-rich ingredients. Body weight and feed intake were measured at d 1, 11, 22, and 32. Pellet temperature, durability, and hardness increased linearly (P < 0.05) with C. jadinii inclusion, with highest (P < 0.05) values for CJ30. Up until d 22, feed conversion ratio (FCR) was similar between treatments (P = 0.169). Overall, increasing C. jadinii inclusion linearly increased (P = 0.047) feed intake but had no effect on weight gain or mortality. FCR increased (P < 0.05) linearly with increasing C. jadinii inclusion but only birds fed CJ30 had a significantly poorer FCR compared to the Control. Ileal digestibility was not affected by C. jadinii inclusion, however, there was a significant linear decrease in crude protein and phosphorus, and a tendency for a decrease in fat digestibility. Apparent metabolizable energy (AME) decreased (P < 0.001) quadratically with increasing C. jadinii and was significantly lower in CJ30 compared to the Control. Ileal concentrations of volatile fatty acids (VFAs) were not affected by C. jadinii inclusion, but butyric acid and total VFAs were linearly and quadratically increased and were significantly higher in cecal digesta of birds fed CJ20 and CJ30. Increasing C. jadinii inclusion was associated with an increase (P < 0.05) in the relative abundance of lactobacillus in the ileum and cecum. In conclusion, C. jadinii yeast can supply up to 20% of the total dietary protein without negatively affecting performance, digestibility, or gut health of broilers. The potential confounding role of feed processing and C. jadinii cell wall components on broiler performance is discussed.

Keywords

C. jadinii, CJ30, Lactobacillus, abundance, abundance of Lactobacillus, acid, affect performance, age, apparent metabolizable energy, birds, body, body weight, broiler chickens, broiler chicks, broiler performance, broilers, butyric acid, cecal digesta, cecum, cell wall components, chicken, chicks, components, concentration of volatile fatty acids, confounding role, control, conversion ratio, crude protein, decrease, diet, dietary protein, dietary treatments, digestion, durability, effect, effect of dietary graded levels, energy, fat digestion, fatty acids, feed conversion ratio, feed intake, feeding, feeding process, gain, growth, growth performance, gut, gut health, gut health of broiler chickens, gut health of broilers, hardness, health of broiler chickens, health of broilers, ileal concentrations, ileal digestibility, ileum, inclusion, increase, ingredients, intake, levels, linear decrease, male, male broiler chicks, metabolizable energy, mortality, no effect, nutrient digestibility, pellet temperature, pellets, performance, phosphorus, poorer feed conversion ratio, potential confounding role, process, protein, protein-rich ingredients, ratio, role, significant linear decrease, temperature, total dietary protein, treatment, values, volatile fatty acids, wall components, weight, weight gain, yeast

Funders

  • The Research Council of Norway

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