scholarly journals A Dietary Sugarcane-Derived Polyphenol Mix Reduces the Negative Effects of Cyclic Heat Exposure on Growth Performance, Blood Gas Status, and Meat Quality in Broiler Chickens

Animals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1158
Author(s):  
Majid Shakeri ◽  
Jeremy J. Cottrell ◽  
Stuart Wilkinson ◽  
Hieu H. Le ◽  
Hafiz A. R. Suleria ◽  
...  
Keyword(s):  
Heat Stress ◽  
Growth Performance ◽  
Meat Quality ◽  
Broiler Chickens ◽  
Control Diet ◽  
Heat Exposure ◽  
Dependent Manner ◽  
Final Body Weight ◽  
Dietary Polyphenols ◽  
Temperature Conditions

Heat stress (HS) compromises growth performance and meat quality of broiler chickens by interrupting lipid and protein metabolism, resulting in increased oxidative damages. The experiment attempted to investigate whether dietary polyphenols (Polygain (POL)) could ameliorate the aforementioned adverse effects of HS on performance and meat quality. One hundred and twenty one day-old-male chicks were allocated to two temperature conditions, thermoneutral (TN) or HS, and fed with either a control diet (CON) or the CON plus four different doses of POL (2, 4, 6 and 10 g/kg). Heat stress caused respiratory alkalosis as evidenced by increased rectal temperature (p < 0.001) and respiration rate (p < 0.001) due to increased blood pH (p < 0.001). Heat stress decreased final body weight (p = 0.061) and breast muscle water content (p = 0.013) while POL improved both (p = 0.002 and p = 0.003, respectively). Heat stress amplified muscle damages, indicated by increased thiobarbituric acid reactive substances (p < 0.001) and reduced myofibril fragmentation index (p = 0.006) whereas POL improved both (p = 0.037 and p = 0.092, respectively). Heat stress impaired meat tenderness (p < 0.001) while POL improved it (p = 0.003). In conclusion, HS impaired growth performance and meat quality whereas POL ameliorated these responses in a dose-dependent manner, and effects of POL were evident under both temperature conditions.

scholarly journals Dietary Betaine Reduces the Negative Effects of Cyclic Heat Exposure on Growth Performance, Blood Gas Status and Meat Quality in Broiler Chickens

Agriculture ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 176
Author(s):  
Majid Shakeri ◽  
Jeremy J. Cottrell ◽  
Stuart Wilkinson ◽  
Hieu H. Le ◽  
Hafiz A. R. Suleria ◽  
...  
Keyword(s):  
Heat Stress ◽  
Growth Performance ◽  
Meat Quality ◽  
Broiler Chickens ◽  
Control Diet ◽  
Heat Exposure ◽  
Thiobarbituric Acid ◽  
Respiratory Alkalosis ◽  
Meat Tenderness ◽  
Growing Period

Heat stress (HS) impairs growth performance and has a severe impact on lipid and protein metabolism, leading to serious adverse effects on meat quality. Forty-eight day-old-male Ross-308 chicks were assigned to two temperature conditions, thermoneutral or cyclical HS, and fed with either a control diet (CON) or the CON plus betaine (BET). Heat stress increased rectal temperature (p < 0.001), respiration rate (p < 0.001) and increased blood pH (p = 0.017), indicating that HS caused respiratory alkalosis. Heat stress reduced body weight during the final stage of growing period (p = 0.005), while BET improved it (p = 0.023). Heat stress tended to reduce breast muscle water content and drip loss (p = 0.089 and p = 0.082), while both were improved with BET (p = 0.008 and p = 0.001). Heat stress tended to reduce the myofibril fragmentation index (p = 0.081) whereas it increased with BET (p = 0.017). Heat stress increased thiobarbituric acid reactive substances (p = 0.017), while BET improved it (p = 0.008). Meat tenderness was not affected by HS, but was improved with BET (p < 0.001). In conclusion, BET improved growth performance over the latter stages of the growing period, and improved product quality of broiler chickens when chickens exposed to HS.

scholarly journals Effects of heat stress on growth performance, selected physiological and immunological parameters, caecal microflora, and meat quality in two broiler strains

2020 ◽  
Vol 33 (5) ◽  
pp. 778-787 ◽  
Author(s):  
Elmutaz Atta Awad ◽  
Muhamad Najaa ◽  
Zainool Abidin Zulaikha ◽  
Idrus Zulkifli ◽  
Abdoreza Farjam Soleimani
Keyword(s):  
Heat Stress ◽  
Growth Performance ◽  
Meat Quality ◽  
Acute Phase Proteins ◽  
Body Weight Gain ◽  
Heat Exposure ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Immunological Parameters ◽  
Temperature Interactions

Objective: This study was conducted to investigate the effects of normal and heat stress environments on growth performance and, selected physiological and immunological parameters, caecal microflora and meat quality in Cobb 500 and Ross 308 broilers.Methods: One-hundred-and-twenty male broiler chicks from each strain (one-day-old) were randomly assigned in groups of 10 to 24 battery cages. Ambient temperature on day (d) 1 was set at 32°C and gradually reduced to 23°C on d 21. From d 22 to 35, equal numbers of birds from each strain were exposed to a temperature of either 23°C throughout (normal) or 34°C for 6 h (heat stress).Results: From d 1 to 21, strain had no effect (p>0.05) on feed intake (FI), body weight gain (BWG), or the feed conversion ratio (FCR). Except for creatine kinase, no strain×temperature interactions were observed for all the parameters measured. Regardless of strain, heat exposure significantly (p<0.05) reduced FI and BWG (d 22 to 35 and 1 to 35), immunoglobulin Y (IgY) and IgM, while increased FCR (d 22 to 35 and 1 to 35) and serum levels of glucose and acute phase proteins (APPs). Regardless of temperature, the Ross 308 birds had significantly (p<0.05) lower IgA and higher finisher and overall BWG compared to Cobb 500.Conclusion: The present study suggests that the detrimental effects of heat stress are consistent across commercial broiler strains because there were no significant strain×temperature interactions for growth performance, serum APPs and immunoglobulin responses, meat quality, and ceacal microflora population.

scholarly journals Effect of Heat Stress and Stocking Density on Growth Performance, Breast Meat Quality, and Intestinal Barrier Function in Broiler Chickens

Animals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 107 ◽  
Author(s):  
Doyun Goo ◽  
Jong Hyuk Kim ◽  
Geun Hyeon Park ◽  
Jomari Badillo Delos Reyes ◽  
Dong Yong Kil
Keyword(s):  
Heat Stress ◽  
Growth Performance ◽  
Meat Quality ◽  
Broiler Chickens ◽  
Body Weight Gain ◽  
Stocking Density ◽  
Intestinal Barrier ◽  
Intestinal Barrier Function ◽  
Breast Meat ◽  
Ambient Temperatures

The present experiment was conducted to investigate the effect of heat stress (HS) andstocking density (SD) on growth performance, breast meat quality, and intestinal barrier functionin broiler chickens. Experimental treatments included two different ambient temperatures (20 °C:thermoneutral conditions, or 27.8 °C: HS conditions) and two different SD (low: 9 birds/m2 andhigh: 18 birds/m2) in a 2 × 2 factorial arrangement. A total of 1140 21-day-old broiler chickens wereallotted 1 of 4 treatments with five replicates. At the end of the experiment (35 days of age), twobirds per replicate were euthanized for sample collections. The results indicated no interactionsbetween HS and SD for all measurements. For main effects, HS decreased (p < 0.05) the growthperformance of broiler chickens. Similarly, high SD also decreased (p < 0.05) body weight gain andfeed intake. HS decreased (p < 0.01) jejunal trans-epithelial electric resistance (TER), whereas highSD did not affect TER. Neither HS nor high SD affected jejunal tight junction-related geneexpressions; however, high SD reduced (p < 0.05) occludin expression. In conclusion, HS and highSD are key environmental factors decreasing broiler performance; however, the interactive effectsof HS and high SD are not significant under the current conditions.

scholarly journals Growth Performance and Characterization of Meat Quality of Broiler Chickens Supplemented with Betaine and Antioxidants under Cyclic Heat Stress

Antioxidants ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 336 ◽  
Author(s):  
Majid Shakeri ◽  
Jeremy J. Cottrell ◽  
Stuart Wilkinson ◽  
Hieu H. Le ◽  
Hafiz A. R. Suleria ◽  
...  
Keyword(s):  
Heat Stress ◽  
Product Quality ◽  
Meat Quality ◽  
Broiler Chickens ◽  
Thiobarbituric Acid ◽  
Respiratory Alkalosis ◽  
Drip Loss ◽  
Final Body Weight ◽  
Broiler Performance ◽  
Commercial Diet

Heat stress (HS) causes oxidative stress, which compromises broiler performance and meat quality. The aim of this study was to determine whether dietary antioxidants could be used as an amelioration strategy. Seventy-two day-old-male Ross-308 chicks were exposed to either thermoneutral or cyclical heat stress conditions. Diets were either control commercial diet (CON), CON plus betaine (BET), or with a combination of betaine, selenized yeast, and vitamin E (BET + AOX). Heat stress increased the rectal temperature (p < 0.001), respiration rate (p < 0.001), decreased blood pCO2 (p = 0.002), and increased blood pH (p = 0.02), which indicated the HS broilers had respiratory alkalosis. Final body weight was decreased by HS (p < 0.001), whereas it was improved with BET (p = 0.05). Heat stress reduced cooking loss (p = 0.007) and no effect on drip loss, while BET decreased the drip loss (p = 0.01). Heat stress reduced the myofibril fragmentation index (p < 0.001) and increased thiobarbituric acid reactive substances (p < 0.001), while these were improved with the combination of BET + AOX (p = 0.003). In conclusion, BET overall improved growth rates and product quality in this small university study, whereas some additional benefits were provided by AOX on product quality in both TN and HS broilers.

Biologically upgraded cocoa pod husk: Effect on growth performance, haemato-biochemical indices and antioxidant status of broiler chickens

2020 ◽  
Vol 3 ◽  
pp. 26
Author(s):  
Olayemi Aanuoluwapo Olugosi ◽  
Johnson Oluwasola Agbede ◽  
Gbenga Emmanuel Onibi ◽  
Issac Abayomi Adebayo ◽  
Akinlolu Oluwafemi Ayeni
Keyword(s):  
Weight Gain ◽  
Growth Performance ◽  
Broiler Chickens ◽  
Antioxidant Status ◽  
Control Diet ◽  
Daily Weight Gain ◽  
Broiler Chicks ◽  
Final Body Weight ◽  
Cocoa Pod Husk ◽  
Biochemical Indices

A 49 day feeding trial was conducted to determine the effect of biologically upgraded cocoa pod husk meal (BCPHM) on the growth performance, haemato-biochemical indices and antioxidant status of broiler chickens. Three experimental diets were formulated at both starter and finisher phases in which BCPHM was added as an active feed ingredient at 0, 10, 20% and designated as diets 1, 2 and 3 respectively. One hundred and fifty day old Marshal broiler chicks weighing 39±2.5g/bird were allotted to 3 dietary treatments (10birds/replicate, 50birds/treatment) in a completely randomized design. The Average daily weight gain (ADWG), total weight gain (TWG) and final body weight (FBW) of broiler chicks fed diets containing 10% BCPHM was significantly (p˂0.05) higher than that of control and diet containing 20% BCPHM at starter phase. At finisher phase, the values of ADWG, TWG  and FBW were at par with that of control. Feed Intake was seen to increase as BCPHM increased in the diet at finisher phase. Carcass traits, relative internal organ weight, haemato-biochemcal indices of broiler chickens were similar across dietary treatment. Superoxide dimutase (SOD) and Catalase (CAT) of birds fed control diet were significantly (p˂0.05) higher than those of birds fed BCPHM based diets. Ten percent dietary inclusion of BCPHM appears optimal in broiler diet since beyond this level growth performance declined.

scholarly journals Growth performance and carcass characteristics of broiler chickens fed raw and differently processed roselle(Hibiscus sabdariffa L.) seed meal

2020 ◽  
Vol 44 (5) ◽  
pp. 109-115
Author(s):  
O. O. Egbewande ◽  
H. Ibrahim ◽  
A. B. Musa ◽  
H. A. Zakari
Keyword(s):  
Growth Performance ◽  
Broiler Chickens ◽  
Control Diet ◽  
Carcass Characteristics ◽  
Seed Meal ◽  
Broiler Chicks ◽  
Hibiscus Sabdariffa ◽  
Feed Conversion ◽  
Final Body Weight ◽  
Groundnut Cake

One hundred and fifty (150)day-old Abor acre broiler chicks were used for this experiment toassess growth performance and carcass characteristics of broilers fed processed roselle (Hibiscus sabdariffa) seed meal were investigated. The birds were randomly assigned to five dietary treatments with three replicates (ten chicks per replicate)each in a completely randomized design (CRD). In the feeding trial, raw roselle seed meal (R RSM), roasted roselle seed meal (R RSM), boiled roselle seed meal (BRSM) and soaked roselle seed meal (SRSM) were incorporated as part replacement for groundnut cake at 50% level of inclusion.Proximate composition of the processed test ingredients and the results showed that there were no significant (P>0.05) differences among the treatment means. Raw roselle seed meal (RaRSM) gave the least crude protein while the highest was recorded in boiled roselle seed meal (BRSM). Birds fed diet without roselle seed meal inclusion (control diet) had the best final body weight and feed conversion ratio but not significantly (P>0.05) different from other treatments.Birds in treatments 2 and 4 (RaRSMand BRSM) had the least survival rate (96.67%)while the rest treatments had 100%. Cut-up parts showed no significant (P>0.05) differences exceptfor the wings of the bird fed roasted roselle seedmeal was significantly (P<0.05) different and higher than those fed control, raw, boiled and soaked roselle seed meal (10.87, 7.52, 9.85 and 9.46%, respectively). Results from visceral organs showed no significant (P>0.05) differencesexceptproventriculus which exhibited significant (P<0.05) differences among the treatment means. Proventriculus of bird fed roasted roselle seedmeal (R RSM)was highest (0.80%)while those fed raw roselle seedmeal (R RSM) gave the least (0.50%). This study however, revealed that using processed (roasted, boiled and soaked) roselle (Hibiscus sabdariffa) seed meal as part replacement for groundnut cake has no deleterious effects onthe broilerchickens. 

scholarly journals Growth performance, carcass characteristics and economics of broiler chicken fed graded levels of raw Mucuna sloanei seed meal

2020 ◽  
Vol 45 (1) ◽  
pp. 106-114
Author(s):  
U. E. Ewa ◽  
K. U. Amaefula ◽  
A. H. Akinmutimi
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Broiler Chickens ◽  
Broiler Chicken ◽  
Control Diet ◽  
Carcass Characteristics ◽  
Seed Meal ◽  
Gross Margin ◽  
Final Body Weight ◽  
Randomized Design

Growth performance, carcass characteristics and economics of broiler chicken fed graded levels of raw Mucuna sloanei seed meal were investigated. A total of 150, 1- day old broiler chickens were used. There were five treatments each replicated into three with 10 birds per replicate in a completely randomized design. Five treatment diets were formulated. Diet 1served as control, while diets 2, 3, 4, and 5 had 5, 10, 15, and 20 %, respectively of raw mucuna seed meals (RMSM) added to them. The experiment lasted 49 days. The parameters considered were growth performance, carcass characteristics and economics of production. For growth performance, the result revealed that RMSM significantly (P<0.05) depressed growth as the levels of inclusion of RMSM increased from 0 to 20%. There were significant differences (p<0.05) in all the parameters considered under growth except for initial body weight and mortality. There was progressive loss in final body weight as the level of mucuna inclusion increased from 0% to 20%. Control recorded the highest live body weight of 3023.30g while, birds fed diet with 20% mucuna had the least body weight of 504.43g. Among the birds placed on the test diets, birds fed diet with 5% mucuna seed meal performed significantly (P<0.05) better (1840.00g) than other test diets. Birds fed diets with 10 and 15% mucuna had final body weight of 1180.00 and 726.67g, respectively. The progressive l oss in weight was obvious early in the experiment and at 8 weeks of age the broiler fed 20% raw mucuna. Mucuna sloanei based diet weighed only 504.43g (16.68% of the control) as against 1840.00, (60.86% of the control) for that fed 5%.mucuna. Percentage dressed weight and percentage breast and thigh were significantly (P<0.05) higher for chicken fed control diet. 10% level of raw MSSM gave highest value for drumstick (14.91%) while control gave the least (13.00%). 5% raw MSSM (27. 71%) compared favourably with control (30.60%) for breast cut. Gross margin significantly decreased from N1459.80 for control diet to N 14.20 for D5 as the percentage inclusion of MSSM increases from 0 to 20%. In conclusion, birds fed raw Mucuna sloanei seed meal diet could not compare favourably with those fed soya bean based diets even at 5% level of inclusion. Processing is therefore recommended to enhance performance.

scholarly journals Partial and Total Replacement of Soybean Meal with Full-Fat Black Soldier Fly (Hermetia illucens L.) Larvae Meal in Broiler Chicken Diets: Impact on Growth Performance, Carcass Quality and Meat Quality

Animals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2715
Author(s):  
Daria Murawska ◽  
Tomasz Daszkiewicz ◽  
Wiesław Sobotka ◽  
Michał Gesek ◽  
Dorota Witkowska ◽  
...  
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Soybean Meal ◽  
Broiler Chickens ◽  
Control Diet ◽  
Experimental Period ◽  
Taste Intensity ◽  
Feed Conversion ◽  
Hermetia Illucens ◽  
Meal Protein

The aim of this study was to compare selected growth performance parameters and slaughter characteristics in broiler chickens fed diets with a different content of full-fat Hermetia illucens L. (HI) larvae meal. The experiment was performed on 384 male broiler chickens (Ross 308) reared to 42 d of age and assigned to four dietary treatments (HI0—control diet and diets where soybean meal protein (SBM) was replaced with HI protein in 50%, 75% and 100%, respectively). The final body weights of chickens were as follows: 3010.0 g (HI0), 2650.0 g (HI50), 2590.0 g (HI75) and 2375.0 g (H100, p < 0.05). The carcasses of chickens from the experimental groups contained less meat and more abdominal fat. The feed conversion ratio for the entire experimental period was similar in groups HI0, HI50 and HI75 and more desirable than in group HI100 (p < 0.05). The meat of broiler chickens from groups HI75 and HI100 was characterized by significantly (p < 0.05) lower juiciness and taste intensity than the meat of birds from groups HI0 and HI50. The replacement of SBM protein with full-fat HI larvae meal in broiler diets exceeding 50% significantly compromised the growth performance of birds and the carcass and meat quality.

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