Effect of Dietary Organic Acids and Humic Substance Supplementation on Performance, Immune Response and Gut Morphology of Broiler Chickens
Carregando...
Arquivos
Fonte externa
Fonte externa
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Tipo
Artigo
Direito de acesso
Arquivos
Fonte externa
Fonte externa
Resumo
This study evaluated the additive effects of a commercial feed supplementation blend (Ava Cid P)-consisting of humic substances, coated sodium butyrate, and a small acidifier portion-on the growth, immune response, and gut health of broiler chickens. A total of 540 female and 540 male broilers were raised from 1-49 d. On the first day, the animals were distributed in a completely randomized 2 x 5 factorial design (2 sexes and 5 treatments) with 7 replications of 15 birds each. The 5 treatments were 1) birds did not receive Ava Cid P (control); 2) birds received 0.91 kg/t of Ava Cid P from 1-21 d (AVA1-21); 3) birds received 0.91 kg/t of Ava Cid P from 1-21 d and 0.45 kg/t from 22-35 d (AVA1-35); 4) birds received 0.91 kg/t of Ava Cid P from 1-21 d and 0.45 kg/t from 22-42 d (AVA1-42); and 5) birds received 0.91 kg/t of Ava Cid P from 1-21 d, 0.45 kg/t from 22-35 d, and 0.23 kg/t from 36-49 d (AVA1-49). ANOVA and Tukey's tests were applied to compare the means (P < 0.05) between treatments. The Ava Cid P showed no effect on male or female growth performance or goblet cell density. However, the supplement modified gut morphometry, and jejunum villi were 32% higher at 9 and 35 d in the AVA1-35 birds compared with those of the control group. The apparent villus surface and villus height increased by 87% and 46%, respectively, in the AVA1-49 birds compared with the AVA1-21 birds. The expression of mucin 2 (MUC2) and tumor necrosis factor-alpha (TNF-alpha) were 1.6% and 0.9% lower in the AVA1-21 birds than in the control birds, but no effects were observed for interleukin-1 beta and interleukin-10. The Ava Cid P altered the mRNA expression of MUC2 and TNF-alpha and some characteristics of intestinal morphometry, but did not change the performance of broilers.
Descrição
Palavras-chave
animal performance, sodium butyrate, gut morphometry, humic acid
Idioma
Inglês
Citação
Journal Of Applied Poultry Research. Amsterdam: Elsevier, v. 29, n. 1, p. 85-94, 2020.
