Effect of hyperthermia in growing broiler chickens on meat quality

2005 ◽  
Vol 2005 ◽  
pp. 170-170 ◽  
Author(s):  
K. Połtowicz ◽  
E. Sosnówka-Czajka
Keyword(s):  
Meat Quality ◽  
Broiler Chickens ◽  
Growth Period ◽  
Poultry Meat ◽  
Technological Parameters ◽  
Broiler Meat ◽  
Physico Chemical ◽  
Negative Effect ◽  
Chemical Traits ◽  
Induced Changes

During growth period of 6 to 7 weeks, broiler chickens are exposed to different stressors, the effects of which are dependent on the type, duration and intensity of stress that affects the bird. Stress-induced changes in muscular metabolism alter the physico-chemical traits of meat, thus affecting its quality (Ali et al., 1999). The negative effect of ante-mortem thermal stress on the quality of broiler meat has been the object of many studies and is relatively well documented (Warriss et al., 1999). There is a scarcity of data on whether and to what degree hyperthermia in growing chickens affects the technological parameters of poultry meat. Therefore we carried out an experiment to determine the effect of 5-day heat stress in 4-week-old broiler chickens on their later meat quality.

scholarly journals Metabolic Gene Expression in the Muscle and Blood Parameters of Broiler Chickens Stimulated In Ovo with Synbiotics

Animals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 687 ◽  
Author(s):  
Aleksandra Dunislawska ◽  
Maria Siwek ◽  
Anna Slawinska ◽  
Adam Lepczynski ◽  
Agnieszka Herosimczyk ◽  
...  
Keyword(s):  
Gene Expression ◽  
Meat Quality ◽  
Broiler Chickens ◽  
Rna Isolation ◽  
Pectoral Muscle ◽  
Poultry Meat ◽  
Raffinose Family Oligosaccharides ◽  
In Ovo ◽  
Metabolic Gene ◽  
Metabolic Gene Expression

To better understand the effects of synbiotics administered at early stages of embryonic development in poultry, it is necessary to analyze direct effects (meat quality) and the molecular background. The molecular interpretation of poultry meat properties after in ovo administration of synbiotics remains to be reported. The purpose of the present study was to analyze the molecular background of meat quality based on gene expression and basic physiological parameters. Eggs were injected with (S1) Lactobacillus salivarius with galacto-oligosaccharides or (S2) Lactobacillus plantarum with raffinose family oligosaccharides. The pectoral muscle was collected at two time points (day 7 and day 42) and subjected to RNA isolation. Gene expression analysis was performed by RT-qPCR for a panel of eight genes associated with metabolism. The concentration of glucose and hormones (insulin, glucagon, and leptin (S1 p = 0.04)) was also increased. The obtained results showed that metabolic gene expression in the muscle was more differential due to synbiotic stimulation on day 7 (FST in S1 p = 0.03; PDK4 in S1 p = 0.02 and S2 p = 0.01; CEBPB in S1 p = 0.01 and S2 p = 0.008; PHKB in S1 p = 0.01; PRKAG3 in S1 p = 0.02) than on day 42 (PDK4 in S1 p = 0.04). On the basis of the results obtained, it can be concluded that in ovo stimulation with S1 triggered the most potent and favorable changes in the pectoral muscle gene expression in broiler chickens.

scholarly journals An effect of anti-stress feed additives on broiler productivity and meat quality

2020 ◽  
Vol 5 (2) ◽  
pp. 4-11 ◽  
Author(s):  
E. A. Miftakhutdinova ◽  
S. L. Tikhonov ◽  
N. V. Tikhonova ◽  
R. T. Timakova
Keyword(s):  
Meat Quality ◽  
Broiler Chickens ◽  
Average Daily Gain ◽  
Feed Additives ◽  
The Body ◽  
Feed Additive ◽  
Lithium Content ◽  
Poultry Production ◽  
Broiler Meat ◽  
Meat Productivity

The paper presents the study on an impact of feed additives Peak anti-stress and SPAO (SPAO-complex) with different lithium content on meat productivity and meat quality of broiler chickens. The feed additives exert a pronounced metabolic effect, have adaptogen properties and allow forming a mechanism that facilitates compensation of the expenditure of the body, which significantly increases upon stress development. It was established that the average daily gain of the broiler chickens increased by 1.8% and 4.3% on the background of using SPAO-complex and Peak anti-stress, respectively, compared to the broiler chickens that did not receive the feed additives in the daily diet. It was shown that addition of feed additives with lithium into a diet led to an improvement of the indices of broiler meat productivity and meat quality: a level of yield of the carcasses of the 1st category increased up to 56.2–79.1%, high organoleptic indices of meat were ensured, the protein content in white and red chicken meat increased and functional-technological properties of minced meat improved. The use of feed additives ensured profitability of industrial poultry production; the highest indices of profitability were established upon introduction of the feed additive Peak anti-stress into a diet — up to 8.67 rubles per each ruble of expenses. The obtained results of the study should be taken into consideration in the technological processes when raising broiler chickens.

scholarly journals Wheat litter and feed with aluminosilicates for improved growth and meat quality in broiler chickens

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11918
Author(s):  
Mirosław Banaszak ◽  
Jakub Biesek ◽  
Marek Adamski
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Meat Quality ◽  
Broiler Chickens ◽  
Subcutaneous Fat ◽  
Good Alternative ◽  
Extensive Literature ◽  
Poultry Production ◽  
Broiler Meat ◽  
Leg Muscles

Background Natural minerals have many beneficial properties in poultry production, taking into account production as well as hygiene, health, safety, and quality of broiler meat. The aim of the study was to evaluate the effect of aluminosilicates in feed and litter on the growth performance and meat quality in chickens. Aluminosilicates, including halloysite and zeolite, could be a good alternative for synthetics, as a good solution for the environment in line with the current trends. Methods Five-hundred male Ross 308 chickens were managed in 5 groups (10 replicates/group): LITTER: 1, control; 2, 0.95 kg/m2 of halloysite; 3, 0.475 kg/m2 of halloysite and 0.475 zeolite; 4, 0.95 kg/m2 of zeolite; 5, 0.25 kg/m2of halloysite and 0.7 kg/m2 of zeolite. FEED: groups 2–5, halloysite and zeolite addition (25:75 ratio; 0.5–2%). Growth performance (body weight and feed indicators), carcass, and meat quality (pH, colour, water-holding capacity, chemical composition of muscles) were recorded. The experimental setup, where the aluminosilicate additives were applied simultaneously, was proposed and approved by experts after pilot testing and on the basis of extensive literature where feed or litter additives were tested. Results Body weight and its gain were higher in groups 3 and 4 than in 1, and feed intake was higher in 4. The weight of the carcass and some of its components, including muscles and skin with subcutaneous fat, were higher in 2–4. Water loss from leg muscles was lower in 4. The content of protein in muscles was significantly higher in 3. The addition of aluminosilicates in feed and litter had a positive effect on the growth performance and some traits of carcasses and meat quality, especially in group 3. Halloysite and zeolite can be used in feed and litter (especially 0.475 kg/m2 for each mineral in the wheat litter).

scholarly journals Enhancing Growth Performance, Organ Development, Meat Quality, and Bone Mineralisation of Broiler Chickens through Multi-Enzyme Super-Dosing in Reduced Energy Diets

Animals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2791
Author(s):  
Jacoba I. Bromfield ◽  
Louwrens C. Hoffman ◽  
Darwin Horyanto ◽  
Elham A. Soumeh
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Feed Intake ◽  
Broiler Chickens ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Energy Reduction ◽  
Organ Development ◽  
Feed Conversion ◽  
Negative Effect

This study identified the optimal multi-enzyme dose rate at three energy levels based on the production performance of broiler chickens. A 42-day grow out trial was conducted using 576 day-old mixed-sex ROSS308 broiler chickens in a 3 × 4 factorial arrangement in a completely randomized design. Diets consisting of three metabolizable energy (ME) levels: standard energy (STD), 150 kcal/kg energy reduction (STD-150), and 200 kcal/kg energy reduction (STD-200), were cross factored with four multi-enzyme inclusion levels (0, 350, 700, and 1000 g/ton). The average daily feed intake and feed conversion ratio increased linearly (p < 0.001) as the dietary ME was reduced, and the multi-enzyme addition improved the feed conversion ratio (p < 0.05) and mitigated the negative effect of the reduced energy diets (RED) on feed intake and feed conversion ratios. Carcass composition, organ weights, and meat quality were not affected by the experimental diets. The RED decreased abdominal fat weight (p < 0.05). Total ash, calcium, and phosphorous contents of the tibia bone were improved (p < 0.04) when the RED were supplemented with the multi-enzyme. Super-dosing multi-enzymes in RED mitigates the negative effect of ME reduction on growth performance while maintaining organ development and meat quality and improving bone mineral content.

scholarly journals Effect of raised level α-linolenic fatty acid diet on broiler meat quality

2007 ◽  
pp. 29-33
Author(s):  
Tamás Pálfy ◽  
Istvánné Hermán ◽  
Andrea Lugasi ◽  
Mária Vadáné Kovács ◽  
István Erdélyi ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Pigment Content ◽  
Poultry Meat ◽  
Broiler Meat ◽  
Acid Diet ◽  
Total Pigment ◽  
Organoleptic Characteristics ◽  
Negative Effect ◽  
Linolenic Fatty Acid ◽  
Broiler Meat Quality

The aim of our investigation was to determine the effects of increased α-linolenic content in food on the colour, total pigment content, organoleptic characteristics and oxidative stability of poultry meat. The experiment was carried out with 1200 Ross-308 cock chicklings. Birds were fed three-phase diets, contained four different fat sources: lard, sunflower oil, flaxseed oil and soybean oil. According to the experiment, the different oil sources had no effect on growth performance, but the fatty acid composition of diets was reflected in the meat fatty acid profile. We could detect just slight change in colour in the treated meat, which was not caused by the decreased pigment content. The detected change in colour during the storage was not in relation to initial PUFA content. TBA level did not prove the accelerated lipid peroxidation which was expected in case of higher α-linolenic containing the meat. The data obtained in meat storage trial, could not prove clearly the negative effect of the higher α-linolenic content of the meat.

scholarly journals Effects of Allegations Regarding the Use of Antibiotics and Hormones in Diets on Consumer Perceptions, Attitudes and Behaviors towards Broiler Meat Consumption

2021 ◽  
Vol 9 (4) ◽  
pp. 675-682
Author(s):  
Kerem Karasu ◽  
Ergin Ozturk
Keyword(s):  
Broiler Chickens ◽  
Feed Additives ◽  
Poultry Meat ◽  
Survey Method ◽  
Growth Promoters ◽  
Broiler Meat ◽  
Attitudes And Behaviors ◽  
Short Period ◽  
And Behaviors ◽  
Safe Food

This research has been carried out to determine the effects of the current misinformation (hormone, antibiotic, feed additives and growth of broiler chickens in a short period) on consumers' view of the poultry meat sector. The survey was conducted in Istanbul province which better reflects the socio-cultural and socio-economic structure of Turkey, and with different demographic structure of 384 people face to face survey method was applied. Questions were asked to determine whether antibiotics and hormones were used in the diet of broiler chickens, and consumers' perceptions, attitudes and behaviors about the reliability of chicken meat. According to the results of the study, 73.4% of the consumers stated that they did not know about the contents of broiler diets. A big majority of the consumers (88.3%) stated that they think hormone is used and 84.6% think antibiotics is used in the feeding of broiler chickens. 78.4% of consumers surveyed stated that they think that broiler chickens are not fed with healthy feed. Also, 70.6% of consumers stated that rapid growth was due to use of antibiotics and hormones. Although the use of hormones and antibiotics as growth promoters in poultry feeds is prohibited, consumers think that they are used as additives and broiler meat is not safe food. According to these results, creating a positive effect on the purchasing decisions of the consumers is important for the sustainability and future of the sector.

scholarly journals Effect of Fermented Cereals, Probiotics, and Phytase on the Sensory Quality of Poultry Meat

2018 ◽  
Vol 49 (3) ◽  
pp. 225-235 ◽  
Author(s):  
S. Yasar ◽  
E. Boselli ◽  
F. Rossetti ◽  
M.S. Gok
Keyword(s):  
Broiler Chickens ◽  
Sensory Quality ◽  
Control Diet ◽  
Coturnix Japonica ◽  
Poultry Meat ◽  
Broiler Meat ◽  
Japanese Quails ◽  
Fermented Grains ◽  
Meat Samples

Abstract The sensory properties of poultry meat obtained from meat-type broiler chickens fed with fermented cereals and two different fermented supplements, and Japanese quails (Coturnix japonica) fed diets including fermented cereals (wheat, barley or oats), three probiotics (from E. faecium, B. subtilis, S. cerevisiae) and two different phytase preparations were evaluated. Fermented grains (particularly wheat and barley) decreased the sensory quality of meat. The use of three probiotic products and phytase did not negatively influence the sensory quality of the quail meats. The diets containing S. cerevisiae (probiotic) produced a highly appreciated meat. The less preferred meat samples were obtained from the quails fed diets containing fermented wheat, fermented barley, and E. faecium, due to the off-flavour and odour as well as tanginess. The supplementation of naturally or yeast-fermented liquid whey and lemon pomace was very effective to overcome the bad sensory quality (fish and metallic off-flavour and taste) of the broiler meat obtained by administering the control diet (rich in vegetable oil and fermented wheat).

scholarly journals DETERMINATION OF THE OPTIMAL STERILIZATION REGIME OF CANNED QUAIL MEAT WITH HYDROCOLOIDS APPLICATION

2017 ◽  
Vol 4 ◽  
pp. 21-25
Author(s):  
Vasil Pasichnyi ◽  
Anatoliy Ukrainets ◽  
Dmytro Shvedyuk ◽  
Haider Muhamed Al-Hashimi ◽  
Yuliiа Matsuk
Keyword(s):  
Salt Content ◽  
Meat Products ◽  
Poultry Meat ◽  
Animal Origin ◽  
Essential Difference ◽  
Technological Parameters ◽  
Broiler Meat ◽  
Physical Chemical ◽  
Organoleptic Characteristics ◽  
Sterilization Process

The use of hydrocolloids in the modern meat industry is the one of prospective directions for improving functional and technological characteristics of meat and meat products, including poultry at long storage terms. A series of concrete requirements to functional-technological, physical-chemical and organoleptic parameters is offered for canned poultry in correspondence with minimal specifications for the quality of products of an animal origin. There is presented the study of the optimization of the process of meat products sterilization using meat of chicken-broilers, quails and hydrocolloids depending on physical-chemical and organoleptic properties. The parameters of quail meat use in recipes of canned poultry meat with hydrocolloids were considered. The influence of the sterilization process on characteristics of chicken-broiler and quail meat was established. There was revealed the essential difference in the influence on functional and technological parameters of canned quail meat using hydrocolloid mixtures comparing with canned chicken-broiler meat, manifested in changes of MKC (moisture keeping capacity), plasticity and salt content in jelly. At changing sterilization regimes, there takes place the change of physical and chemical characteristics of gels that correlates with organoleptic characteristics. For providing high quality parameters of canned poultry meat and industrial sterility, sterilization regimes for canned chicken-broiler meat must be realized for containers with the volume 500 with sterilization time no more than 90 minutes. For canned quail meat the sterilization process duration must be increased to 120 min at the temperature 115 ° С.

scholarly journals Influence of the Application of Organic Selenium in Duck Concentrate Mixtures on the Sensory Properties of Duck Meat

2021 ◽  
Vol 8 (8) ◽  
pp. 102-109
Author(s):  
Amir Zenunović ◽  
Husejin Keran ◽  
Amir Hasić ◽  
Toni Babić
Keyword(s):  
Oxidative Stability ◽  
Human Health ◽  
Meat Quality ◽  
Nutritional Value ◽  
Ph Value ◽  
Sensory Properties ◽  
Chemical Parameters ◽  
Broiler Meat ◽  
Organic Selenium ◽  
Negative Effect

There are data in the literature on the influence of higher amounts of organic selenium on production results, and the obtained results indicate that high levels of organic selenium added to feed (even up to 15 mg / kg) of chickens did not have a negative effect on production results. Also, in the literature related to chicken nutrition there is data on the use of different forms (inorganic, organic) and different amounts of selenium on carcass meat, pH value of meat, ability to bind water, chemical parameters of meat quality, oxidative stability of meat, and and on the sensory properties of broiler meat. Of particular importance are the studies of the possibility of using increased amounts of organic selenium in poultry nutrition in order to enrich meat with selenium. This is of particular importance for the nutritional value of meat, and in connection with this, human health. The aim of this study was to investigate the effect of adding different amounts of organic selenium (ALKOSEL® R397) in concentrate mixtures on the sensory properties of meat streams.

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