Overall Performance, Carcass Yield, Meat Safety Potentials and Economic Value of Heat-Stressed Broilers Fed Diets with Balanced Electrolytes

Popoola, Ibukun Olukorede; Popoola, Oluwabukola Rashidat; Adeyemi, Akinyemi Alaba; Ojeniyi, Oluwatobi Matthew; Olaleru, Ibikunle Funsho; Oluwadele, Femi Joshua; Akinwumi, Ezekiel Olukunle

doi:10.4236/fns.2020.117044

Cited by 6 publications

(4 citation statements)

References 32 publications

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“…The heat stress has been reported to impair growth performance of poultry, leading to a significant economic loss in poultry production [ 30 – 33 ]. Similar results for decreased growth performance were observed in the current study.…”

Section: Discussionmentioning

confidence: 99%

Comparative effects of dietary functional nutrients on growth performance, meat quality, immune responses, and stress biomarkers in broiler chickens raised under heat stress conditions

Kim

Choi

et al. 2021

Anim Biosci

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Objective: The objective of the present study was to investigate the comparative effects of dietary functional nutrients including glutamine (Gln), chromium picolinate (Cr picolinate), vitamin C (Vit C), betaine (Bet), and taurine (Tau) on growth performance, meat quality, immune responses, and stress biomarkers in broiler chickens raised under heat stress conditions.Methods: A total of 420 21-d-old Ross 308 male broiler chickens (initial body weight = 866±61.9 g) were randomly allotted to 1 of 7 treatment groups with 6 replicates. One group was kept under thermoneutral conditions and was fed a basal diet (PC, positive control). Other 6 groups were exposed to a cyclic heat stress condition. One of the 6 groups was fed the basal diet (NC, negative control), whereas 5 other groups were fed the basal diet supplemented with 0.5% Gln, 500 ppb Cr picolinate, 250 mg/kg Vit C, 0.2% Bet, or 1.0% Tau. The diets and water were provided ad libitum for 21 d.Results: Broiler chickens in NC group had decreased (p<0.05) growth performance and immune responses measured based on cutaneous basophil hypersensitivity (CBH), but increased (p<0.05) stress responses measured based on feather corticosterone concentrations and blood heterophil:lymphocyte than those in PC group. However, none of dietary functional nutrients had a positive effect on growth performance of broiler chickens. Dietary supplementation of 250 mg/kg Vit C improved (p<0.05) CBH responses of broiler chickens, but other functional nutrients had no such an improvement in CBH responses. All functional nutrients decreased (p<0.05) stress responses of broiler chickens.Conclusion: Functional nutrients including Gln, Cr picolinate, Vit C, Bet, and Tau at the supplemental levels used in this study decrease stress responses of broiler chickens to a relatively similar extent. However, this reduction in stress responses could not fully ameliorate decreased productive performance of broiler chickens raised under the current heat stress conditions.

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Section: Discussionmentioning

confidence: 99%

Comparative effects of dietary functional nutrients on growth performance, meat quality, immune responses, and stress biomarkers in broiler chickens raised under heat stress conditions

Kim

Choi

et al. 2021

Anim Biosci

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“…The extent of adaptation to heat stress conditions by poultry birds is dependent on the enhancing strategies adopted during thermal conditioning in chicks. Popoola et al (2020a) affirmed that tropical regions with characteristic high environmental temperatures face more difficulty raising fast-growing meat type chickens because birds` health, performance and meat quality are adversely affected. Decuypere et al (2001) also opined that adaptation to heat stress conditions can be enhanced by thermal conditioning in chicks, without impairing performance, as chicks regulate body temperature during early post-hatch periods more with proportionate increase in age (Debonne et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Resultant Effect of Early Endogenous Thermal Acclimatization on Performance of Heat-Stressed Broiler Finishers on Different Levels of Dietary Protein

2021

Russian Journal of Biological Research

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The guarantee of a naturally stable thermal environment that will keep poultry birds within the zone of maximum comfort all year round in tropical and sub-tropical regions in the 21 st century cannot be established. Therefore, it becomes necessary to look into stabilizing internal environment of vulnerable chicks, with the sole aim of re-exhibiting their masked potentials for fast growth and high yield. Crude protein (CP), though essential for growth and repair, dissipates more heat load than other nutrients during metabolism. Hence, it becomes imperative to investigate the effect of early endogenous thermal acclimatization on performance of heat-stressed broilers (HSB) at finisher phase. Using a total of 288, one day-old Arbor Acre broiler chicks, birds were randomly allotted to four dietary treatments (T1 -21 % CP; T2 -19 % CP; T3 -17 % CP; and T4 -15 % CP) at finisher phase with six replicate groups in a completely randomized design in order to evaluate the resultant effect of a 2 %, 4 % and 6 % reduction in dietary CP. Data were analysed using descriptive, ANOVA, regression and correlation statistics. Low crude protein diets improved performance of HSB at finisher phase. However, a 2 % dietary CP reduction (19 % CP) best enhanced performance of HSB at finisher phase. Some parameters that were supposed to strongly correlate were not as a result of the influence of early endogenous manipulation. Endogenous heat load reduction through dietary crude protein and electrolyte inter-play have resulted in a proportionate increase in feed intake, body weight gain, protein efficiency ratio and enhanced feed conversion ratio in HSB at finisher phase. The resultant effect of early endogenous thermal acclimatization on performance of heat-stressed broiler chickens at finisher phase has been beneficial.

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“…The trending prediction is that the production cycle of broiler chickens which has been decreased over the years will yet more decrease due to heat stress conditions, as Popoola et al (2020a) expansiated that even though ideal dietary electrolyte balance is essential for heat-stressed broilers, yet salts that presumably could have improved satiety did not enhance appetite in heatstressed broilers, necessitating a more integral nutritional approach. Also, poultry meat and feed quality deterioration; and loss of customers` preference to chicken meat exposed to heat stress conditions may persist as noted by Popoola et al (2020b).…”

Section: Introductionmentioning

confidence: 99%

“…Since birds must maintain internal body temperature despite thermal oscillation, they do so at the expense of production, by diverting nutritionally beneficial molecules to homeostatic adjustments. Popoola et al (2020a) affirmed that tropical regions with characteristic high environmental temperatures face more difficulty raising fast-growing meat type chickens because birds` health, performance and meat quality are adversely affected. The level of heat tolerance in poultry is dependent on the activation of heat loss mechanism and the ability to reduce the endogenous heat production (Nichelmann, Tzschentke, 2002).…”

Section: Introductionmentioning

confidence: 99%

Early Thermal Acclimatization in Pre-Starter and Starter Chicks Fed Varying Crude Protein Diets Fortified with Optimum Electrolyte Balance

2020

Central European Journal of Zoology

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The genetic potentials of fast-growing strains of broiler chickens have been compromised as a result of the huge contribution of external factors determining the expression of these useful traits. The earth`s present surface temperature has necessitated adjustments in major contributing factors to beneficial traits expression in broilers that includes nutritional balance in the face of thermal oscillation. Crude protein (CP) ingestion cause a greater increase in heat production than carbohydrates or fat. However, controversy abounds on whether or not low CP diets are beneficial to poultry raised in hot environment. It is essential to investigate the effects of heat stress acclimation during early weeks on adaptability to high endogenous heat production in broiler chicks. Using a total of 288, one day-old Arbor Acre broiler chicks, birds were randomly allotted to four dietary treatments (T1-23 % CP; T2-21 % CP; T3-19 % CP; and T4-17 % CP) with six replicates, in a completely randomized design. Data were analysed using descriptive, ANOVA, regression and correlation statistics. Pre-starter chicks cannot tolerate excess endogenous heat load from protein degradation and therefore divert dietary proteins needed for growth into regulation of homeostasis. Heat-stressed starter broiler chicks can tolerate excessive endogenous heat load at optimum DEB of 270 mEq/kg and achieve a new energy and homeostatic balance. However, production and economic prowess necessitate the adoption of 21 % CP in diets of pre-starter and starter broiler chicks under severe heat stress conditions.

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Overall Performance, Carcass Yield, Meat Safety Potentials and Economic Value of Heat-Stressed Broilers Fed Diets with Balanced Electrolytes

Cited by 6 publications

References 32 publications

Comparative effects of dietary functional nutrients on growth performance, meat quality, immune responses, and stress biomarkers in broiler chickens raised under heat stress conditions

Comparative effects of dietary functional nutrients on growth performance, meat quality, immune responses, and stress biomarkers in broiler chickens raised under heat stress conditions

Resultant Effect of Early Endogenous Thermal Acclimatization on Performance of Heat-Stressed Broiler Finishers on Different Levels of Dietary Protein

Early Thermal Acclimatization in Pre-Starter and Starter Chicks Fed Varying Crude Protein Diets Fortified with Optimum Electrolyte Balance

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