Effect of replacement different methionine levels and sources with betaine on blood metabolites, breast muscle morphology and immune response in heat-stressed broiler chickens

Sahebi-Ala, Fatemeh; Hassanabadi, Ahmad; Golian, Abolghasem

doi:10.1080/1828051x.2020.1868358

Cited by 19 publications

(12 citation statements)

References 71 publications

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“…However, contrary to previous studies, Met sources tested in the current work did not affect overall broiler performance, and the effect of the source × level interaction was not significant for any final performance and carcass quality parameters. This was consistent with some previous reports in broilers (Dilger and Baker, 2007;Pacheco et al, 2018;Ullrich et al, 2019;Sahebi-Ala et al, 2021), indicating that DL-and L-Met exerted a similar effect on growth performance and carcass characteristics of broilers. Similar results were obtained by Murawska et al (2018), who found no significant differences between DL-and L-Met supplementation in terms of turkey growth performance, which was also consistent with our results.…”

Section: Discussionsupporting

confidence: 93%

Effects of DL- and L-methionine supplementation on growth performance, carcass quality and relative bioavailability of methionine in broilers fed maize-soybean-based diets

Çenesiz¹,

Çiftçi²,

Ceylan³

2022

J. Anim. Feed Sci.

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This experiment was conducted to compare the effects and bioavailability of DL-methionine (DL-Met) and L-methionine (L-Met) supplementation in maize-soybean meal-based diets on performance and carcass traits of broiler chickens. A total of 728-day-old male broilers were divided into 7 groups with 9 replicates (7 replicates of 12, and 2 replicates of 10 chicks) using a 2 × 3 + 1 factorial arrangement in a completely randomised design. Dietary treatments consisted of basal diets (BD) (including 0.619, 0.555 and 0.523% digestible methionine + cysteine (Met + Cys) for starter, grower and finisher periods, respectively) supplemented with three levels (0.155, 0.310 and 0.455%) of either DL-Met or L-Met: BD, BD + 0.155% DL-Met, BD + 0.310% DL-Met, BD + 0.455% DL-Met, BD + 0.155% L-Met, BD + 0.310% L-Met and BD + 0.455% L-Met. The interaction between sources and levels of Met supplementation did not influence overall growth performance, yield of carcass and parts, as well as relative internal organ and feather weight. Source of methionine had no significant effect on overall growth performance, yield of carcass and parts, relative internal organ and feather weight, while methionine addition significantly improved growth performance and carcass and cut yields. The slope-ratio assay showed that the relative bioavailability (RBV) of L-methionine to DL-methionine for BW, FCR and BMY of broilers were 123, 91.5 and 88.0%, respectively, i.e. the differences were not significant between the two Met sources. In conclusion, our data indicated that when DL-Met and L-Met were included in feeds at practical levels, they were equally effective as a source of methionine for broilers.

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Section: Discussionsupporting

confidence: 93%

Effects of DL- and L-methionine supplementation on growth performance, carcass quality and relative bioavailability of methionine in broilers fed maize-soybean-based diets

Çenesiz¹,

Çiftçi²,

Ceylan³

2022

J. Anim. Feed Sci.

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“…Previous studies suggested that a deficiency of methionine increases fat deposition in broiler chickens [ 43 ]. Moreover, it has been observed that heat stress increases the methionine requirement of broilers [ 44 ]. In the current study, the reduced levels of muscle methionine in the HS group may explain the excessive deposition of abdominal fat.…”

Section: Discussionmentioning

confidence: 99%

Oxidative Stability, Carcass Traits, and Muscle Fatty Acid and Amino Acid Profiles in Heat-Stressed Broiler Chickens

2021

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The objective was to elucidate the effects of chronic heat stress on carcass traits, muscle oxidative stability, muscle fatty acids and amino acid profiles in broiler chickens. A total of 100-day-old male Ross broiler chicks were divided into two equal groups of five replicates. The control group (TN) was maintained on a thermoneutral condition, while the experimental group (HS) was subjected to 8 h of heat stress (34 °C). The HS group showed lower dressing percentage and breast yield compared with the TN group (p = 0.040 and 0.042, respectively). Meanwhile, heat stress significantly increased the percentage of abdominal fat in broiler chickens (p = 0.001). The HS group showed significantly lower levels of PUFA (linoleic, docosahexaenoic and eicosapentaenoic) in the breast (p = 0.003, 0.002 and 0.001, respectively) and thigh (p = 0.001, 0.009 and 0.003, respectively) muscles than did the TN group. The levels of α-lenolinec acid in the breast and thigh muscles did not differ between both experimental groups (p = 0.818 and 0.060, respectively). With exception of threonine, tyrosine and phenylalanine, the levels of essential AA in the breast muscles were significantly (p ˂ 0.05) reduced in the HS group. The HS group showed significantly higher concentration of malondialdehyde (MDA) in the breast muscles (p = 0.032). Meanwhile, the concentration of MDA in the thigh muscles did not differ between both experimental groups (p = 0.149). Furthermore, the HS group showed significantly lower superoxide dismutase and catalase in heart tissues (p = 0.005 and 0.001, respectively). In conclusion, chronic thermal stress deteriorates carcass yield and the oxidative stability of breast muscles, as well as the levels of PUFA and essential AA in broiler chickens. However, the oxidative stability of thigh muscles was not affected.

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“…Because of its importance in maintenance functions and muscle deposition that are greatly impacted during exposure to HS, defining Met requirements is an important step in optimizing poultry nutrition under HS conditions. Indeed, higher requirements of Met have been found in broilers under high temperatures compared to thermoneutral conditions ( Silva Junior et al, 2006 ; Sahebi-Ala et al, 2021 ), but this does not appear to be the case in laying hens or pullets ( Bunchasak and Silapasorn, 2005 ; Castro et al, 2019 ). Several physiological mechanisms have been proposed regarding the importance of Met under HS.…”

Section: Supplementation Of Amino Acidsmentioning

confidence: 99%

A review of heat stress in chickens. Part II: Insights into protein and energy utilization and feeding

et al. 2022

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With the growing global demand for animal protein and rising temperatures caused by climate change, heat stress (HS) is one of the main emerging environmental challenges for the poultry industry. Commercially-reared birds are particularly sensitive to hot temperatures, so adopting production systems that mitigate the adverse effects of HS on bird performance is essential and requires a holistic approach. Feeding and nutrition can play important roles in limiting the heat load on birds; therefore, this review aims to describe the effects of HS on feed intake (FI) and nutrient digestibility and to highlight feeding strategies and nutritional solutions to potentially mitigate some of the deleterious effects of HS on broiler chickens. The reduction of FI is one of the main behavioral changes induced by hot temperatures as birds attempt to limit heat production associated with the digestion, absorption, and metabolism of nutrients. Although the intensity and length of the heat period influences the type and magnitude of responses, reduced FI explains most of the performance degradation observed in HS broilers, while reduced nutrient digestibility appears to only explain a small proportion of impaired feed efficiency following HS. Targeted feeding strategies, including feed restriction and withdrawal, dual feeding, and wet feeding, have showed some promising results under hot temperatures, but these can be difficult to implement in intensive rearing systems. Concerning diet composition, feeding increased nutrient and energy diets can potentially compensate for decreased FI during HS. Indeed, high energy and high crude protein diets have both been shown to improve bird performance under HS conditions. Specifically, positive results may be obtained with increased added fat concentrations since lipids have a lower thermogenic effect compared to proteins and carbohydrates. Moreover, increased supplementation of some essential amino acids can help support increased amino acid requirements for maintenance functions caused by HS. Further research to better characterize and advance these nutritional strategies will help establish economically viable solutions to enhance productivity, health, welfare, and meat quality of broilers facing HS.

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Effect of replacement different methionine levels and sources with betaine on blood metabolites, breast muscle morphology and immune response in heat-stressed broiler chickens

Cited by 19 publications

References 71 publications

Effects of DL- and L-methionine supplementation on growth performance, carcass quality and relative bioavailability of methionine in broilers fed maize-soybean-based diets

Effects of DL- and L-methionine supplementation on growth performance, carcass quality and relative bioavailability of methionine in broilers fed maize-soybean-based diets

Oxidative Stability, Carcass Traits, and Muscle Fatty Acid and Amino Acid Profiles in Heat-Stressed Broiler Chickens

A review of heat stress in chickens. Part II: Insights into protein and energy utilization and feeding

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