Dietary green tea powder affects the immunologic parameters of broiler chicks

Abstract

Green tea powder diet supplementation effect on some immunological parameters in broiler\ud chickens has been evaluated. To assess both the effect and the beneficial dose, the diet of\ud 271 day-old Ross 308 male broiler chickens has been supplemented with 0, 0.25, 0.50, 0.75 and\ud 1.00% (w/w) green tea powder in addition to feed. The experiment lasted for 21 and 42 days,\ud respectively, for each value of the green tea supplement and for separate groups of animals.\ud Immune response against Newcastle disease, influenza viruses and sheep red blood cells, has\ud been determined as well as lymphoid organ (bursa of Fabricius, thymus and spleen) weights.\ud The sero-response to avian influenza ranged between 3.7 and 6.3 lg2 (33 days) and 3.9–3.8 lg2\ud (42 days) for all the animals treatment groups. The total sero-response to sheep red blood cells\ud was moderate, in a range from 1.7 to 1.5 lgT after 21 and 42 days, respectively. The plots of the\ud weight of immune organs did not show any relation between organ weight and immunoglobulin\ud titre. While additional data would be needed to assess the optimum supplement feed dose, it\ud can be concluded that green tea feed supplementation is not likely to be able to induce any\ud negative effects on immunological parameters

Effects of Dietary Supplementation of L-Carnitine and Excess Lysine-Methionine on Growth Performance, Carcass Characteristics, and Immunity Markers of Broiler Chicken

“…Then, 7 days after each sensitization (28 and 42 days, respectively), antibody titers against SRBC were measured by a hemagglutination inhibition (HI) test according to Cunningham [46]. All antibody titers were recorded according to previous studies [47,48].…”

“…Birds were also vaccinated against infectious bronchitis (IB) on the 1 st and 16 th days of age, against Newcastle disease (NCD) on the 8 th and 20 th days of age, and against Gumboro’s disease on the 14 th and 23 rd days of age. The humoral immune responses of chickens to the IB virus at the 23 rd day of age, to the NCD virus at 27 th day of age, and to the Gumboro virus at the 30th day of age were measured using the HI and ELISA methods as described by references [47,48]. Blood samples were collected from the brachial vein.…”

Green tea dietary supplementation in broiler chickens: Effect on the development of chicken intestine

“…Green tea has been famous for its remarkable bioactive extractive or derivatives utilized as effective medicinal components in both ancient and modern medicines for several centuries (Hamer, 2007; Wu & Wei, 2002). Therefore, green tea and its extractives or derivatives are widely utilized as natural feed ingredients and important additives for feeding domestic animals (Cao et al., 2005; Ishihara, 2001; Jelveh et al., 2018; Seidavi et al., 2017; Suzuki et al., 2002; Yang et al., 2003). Moreover, positive bioactivities and dietary effects of green tea feed additives on performance have been frequently observed and reported in domestic animals (Jelveh et al., 2018; Saraee et al., 2014, 2015; Seidavi et al., 2014, 2017).…”

“…Therefore, green tea and its extractives or derivatives are widely utilized as natural feed ingredients and important additives for feeding domestic animals (Cao et al., 2005; Ishihara, 2001; Jelveh et al., 2018; Seidavi et al., 2017; Suzuki et al., 2002; Yang et al., 2003). Moreover, positive bioactivities and dietary effects of green tea feed additives on performance have been frequently observed and reported in domestic animals (Jelveh et al., 2018; Saraee et al., 2014, 2015; Seidavi et al., 2014, 2017). However, there are rare experiments (e.g., Chen et al., 2019; Hassanpour et al., 2010; Kaya et al., 2018) that fully reported the effect of feeding green tea additives or its biochemical derivatives on broiler intestine.…”

Savory (Satureja hortensis L.) powder and extract effects on broiler chicken ileal Escherichia coli and Lactobacillus bacteria

“…However, veterinary drugs may result in residues that may be harmful substances in poultry products for human health. Using herbs has gained increasing interest as a feed additive and possible alternative to antibiotics in poultry production (Hosseinzadeh et al 2014;Seidavi et al 2017). Satureja hortensis is an aromatic and medicinal plant species from the family Lamiaceae and is related to rosemary and thyme, which can be substituted for veterinary drugs as growth promoters.…”