scholarly journals Supplemental methionine exerted chemical form-dependent effects on antioxidant status, inflammation-related gene expression, and fatty acid profiles of broiler chicks raised at high ambient temperature1

2019 ◽  
Vol 97 (12) ◽  
pp. 4883-4894 ◽  
Author(s):  
Guanchen Liu ◽  
Andrew D Magnuson ◽  
Tao Sun ◽  
Samar A Tolba ◽  
Charles Starkey ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Broiler Chickens ◽  
Chemical Form ◽  
Metabolic Effects ◽  
Broiler Chicks ◽  
Fatty Acid Profiles ◽  
Related Gene ◽  
Reducing Ability ◽  
Methionine Supplementation ◽  
Finisher Diets

Abstract This study was to explore metabolic effects of two forms and concentrations of supplemental methionine in grower and finisher diets for broiler chickens raised at high temperature. Male Cornish cockerel chicks (total = 360, day-old) were divided into four groups (10 pens/treatment, 9 chicks/pen) and fed with 100% or 130% required methionine in the diets as DL-methionine (DL-MET) or 2-hydroxy-4-(methylthio)butanoate (HMTBA). The room was maintained at 4 to 13 °C above the suggested thermoneutral temperature. The higher concentration of both DL-MET and HMTBA enhanced (P < 0.05) hepatic GSH concentrations of the growers and plasma ferric reducing ability of the finishers. The DL-MET-fed growers had greater (P < 0.05%) muscle GSH and hepatic unsaturated fatty acid concentrations than those fed HMTBA. Expression of inflammation-related genes in the liver of finishers was affected (P < 0.05) by interaction effects of the methionine form and concentration. In conclusion, effects of the extra methionine supplementation on the high ambient temperature-related metabolic responses of broilers varied with their age and(or) tissue and the methionine form.

scholarly journals Effect of Dietary Combination of Methionine and Fish Oil on Cellular Immunity and Plasma Fatty Acids in Infectious Bursal Disease Challenged Chickens

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Elham Maroufyan ◽  
Azhar Kasim ◽  
Goh Yong Meng ◽  
Mahdi Ebrahimi ◽  
Loh Teck Chwen ◽  
...  
Keyword(s):  
Immune Response ◽  
Fish Oil ◽  
Broiler Chickens ◽  
Dietary Treatment ◽  
Blood Parameters ◽  
Infectious Bursal Disease ◽  
Broiler Chicks ◽  
Treatment Groups ◽  
Bursal Disease ◽  
Methionine Supplementation

This study was carried out to investigate the modulatory effects of dietary methionine and fish oil on immune response, plasma fatty acid profile, and blood parameters of infectious bursal disease (IBD) challenged broiler chickens. A total of 300 one-day-old male broiler chicks were assigned to one of six dietary treatment groups in a 3 × 2 factorial arrangement. There were three levels of fish oil (0, 2.5 and 5.5%), and two levels of methionine (NRC recommendation and twice NRC recommendation). The results showed that the birds fed with 5.5% fish oil had higher total protein, white blood cell count, and IL-2 concentration than those of other groups at 7 days after IBD challenge. Inclusion of fish oil in diet had no effect on IFN-γconcentration. However, supplementation of methionine twice the recommendation enhanced the serum IFN-γand globulin concentration. Neither of fish oil nor methionine supplementation affected the liver enzymes concentration. It can be suggested that a balance of moderate level of fish oil (2.5%) and methionine level (twice NRC recommendation) might enhance immune response in IBD challenged broiler chickens.

scholarly journals Energy manipulation of isonitrogenous diets for broiler chickens

2021 ◽  
Vol 51 (1) ◽  
Author(s):  
O.F. Akinmoladun ◽  
A.B. Falowo
Keyword(s):  
Energy Intake ◽  
Broiler Chickens ◽  
Energy Levels ◽  
Carcass Traits ◽  
Broiler Chicks ◽  
Dietary Energy ◽  
Feed Conversion ◽  
Total Protein Intake ◽  
Two Phases ◽  
Finisher Diets

A total of 378 unsexed Anak broiler chicks were used to assess the effects of varying energy levels and manipulation on growth, haematology, and carcass traits. The experiment was conducted in two phases. First, one-day-old chicks were randomly assigned to one of three starter diets, which differed in their energy density (LSE: 2786.80 Kcal/kg; OSE: 3015.40 Kcal/kg; and HSE: 3252.20 Kcal/kg). The chicks were assigned to seven replicates per treatment with 18 chicks per replicate. When the chicks were 27 days old, they were randomly re-allocated to three finisher diets (LFE: 2770.66 Kcal/kg, OFE: 2961.74 Kcal/kg, and HFE: 3150.43 Kcal/kg). Thus, there were seven replicates of nine treatments with six chicks per replicate in the finishing phase. The starter and finisher diets were isonitrogenous. Birds fed the OSE and HSE starter diets gained more weight and were heavier at 27 days than birds fed LSE. Energy intake by birds fed HSE was greater than by birds fed OSE, and birds fed OSE had greater energy intake than birds fed LSE. Feed conversion ratio was improved for birds fed OSE and HSE. Birds fed LSE and then HFE consumed the least feed and gained as much or more weight during the finisher phase as any other group. Overall, FCR between days 27 and 50 tended to differ among the treatments (P =0.06). Total protein intake increased with decreasing dietary energy in both phases. Varying dietary energy levels did not affect the haematological parameters, carcass traits and internal organ weights.

scholarly journals Supplemental methionine and stocking density affect antioxidant status, fatty acid profiles, and growth performance of broiler chickens

2020 ◽  
Vol 98 (4) ◽  
Author(s):  
Andrew D Magnuson ◽  
Guanchen Liu ◽  
Tao Sun ◽  
Samar A Tolba ◽  
Lin Xi ◽  
...  
Keyword(s):  
Adverse Effects ◽  
Growth Performance ◽  
Broiler Chickens ◽  
Stocking Density ◽  
Heat Shock Protein 90 ◽  
Redox Status ◽  
Fatty Acid Profiles ◽  
Glutathione S Transferase ◽  
Impaired Health ◽  
Methionine Supplementation

Abstract Broilers stocked in high densities may be prone to oxidative and inflammatory insults, resulting in impaired health status, growth performance, and meat quality. This study was to determine if 30% extra supplemental dl-methionine alleviated or prevented those adverse effects of a higher stocking density in broiler chickens. A total of 560 male Cornish Cross cockerels (day old) were divided into four groups: two stocking densities (9 and 12 birds/m2) and two supplementations of methionine (grower: 2.90 or 3.77 g/kg and finisher: 2.60 or 3.38 g/kg). Growth performance was recorded weekly. Blood and tissues were sampled at the end of each period. High stocking density decreased (P < 0.05) body weight and growth performance of growers and (or) finishers. Those differences were partially attenuated by the extra methionine supplementation. The high methionine elevated (P < 0.05) glutathione (GSH) concentration in the thigh at both ages (> 24%). The high stocking density elevated (>28%, P < 0.05) glutathione concentration in the plasma, breast, and thigh of growers, but decreased (P < 0.05) it in the liver of growers and thigh of finishers. Interaction effects (P < 0.05) between dietary methionine and stocking density were found on activities of the antioxidant enzyme glutathione S-transferase in the liver of growers and breast, thigh, and adipose tissue of finishers. The interaction effect was also found on activities of glutathione peroxidase and superoxide dismutase in the thigh of growers. The extra methionine decreased (P < 0.05) hepatic gene expression of heat shock protein 90 (18%) and thigh and breast malondialdehyde concentrations of the finishers (35%). In conclusion, the 30% extra dl-methionine supplementation was able to partially mitigate adverse effects caused by the higher stocking density and to improve the redox status of the broilers.

Sign in / Sign up

Export Citation Format

Share Document