scholarly journals Broiler chicken thigh and breast muscle responses to cold stress during simulated transport before slaughter

2012 ◽  
Vol 91 (6) ◽  
pp. 1454-1464 ◽  
Author(s):  
S. Dadgar ◽  
T.G. Crowe ◽  
H.L. Classen ◽  
J.M. Watts ◽  
P.J. Shand
Keyword(s):  
Cold Stress ◽  
Broiler Chicken ◽  
Breast Muscle ◽  
Muscle Responses

scholarly journals The amino acid profile after addition of humic acids and phytobiotics into diet of broiler chicken

10.5219/1237 ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 884-890
Author(s):  
Peter Haščík ◽  
Adriana Pavelková ◽  
Jana Tkáčová ◽  
Juraj Čuboň ◽  
Marek Bobko ◽  
...  
Keyword(s):  
Amino Acid ◽  
Humic Acids ◽  
Broiler Chickens ◽  
Broiler Chicken ◽  
Amino Acid Profile ◽  
Breast Muscle ◽  
Thigh Muscle ◽  
Chicken Breast ◽  
Control Group ◽  
Garlic Powder

The aim of the study was analysed the effect of humic acids separately and humic acids in combination with phytobiotic as garlic and oregano powder on amino acid (AA) profile of the most valuable parts of Ross 308 chicken. A total of 200 pcs Ross 308 broiler chickens of mixed sex were randomly divided into 4 groups (n=50): control group (C) without supplementation, experiment group E1 (2% humic acids), E2 (80% humic acids and 20% garlic powder) and E3 (90% humic acids and 10% oregano powder). Fattening period lasted for 42 days and all groups were kept under the same conditions. After slaughter, the AA profiles of breast and thigh samples were determined. In comparison with control group, 6 out of 10 AA was significantly affected (p ≤0.05) by used dietary supplementation – Met, Cys and His in thigh and Leu, Phe, His and Arg in breast muscle. AA composition of breast muscle was positively affected mainly by humic acids and 10% oregano powder supplementation (E3), while thigh muscle by humic acids and 20% garlic powder (E2). The highest obtained AA in breast muscle was Leu (2.02 g.100 g-1) in E3 group and thigh muscle His (1.15 g.100 g-1) in E2 group (p ≤0.05). In conclusion, humic acids and 10% oregano powder supplementation (E3) elicited to the best AA profile of chicken breast muscle but also the worst AA profile in thigh muscle so the effect of such a supplementation is disputable. On the other hand, humic acids and 20% garlic powder supplementation resulted into slight increase of AA in both breast and thigh muscle (E2).

scholarly journals Insect Oil as An Alternative to Palm Oil and Poultry Fat in Broiler Chicken Nutrition

Animals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 116 ◽  
Author(s):  
Abdelbasset Benzertiha ◽  
Bartosz Kierończyk ◽  
Mateusz Rawski ◽  
Paweł Kołodziejski ◽  
Magdalena Bryszak ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Palm Oil ◽  
Broiler Chickens ◽  
Broiler Chicken ◽  
Pancreatic Enzyme ◽  
Nutrient Digestibility ◽  
Breast Muscle ◽  
Lipid Fatty Acid ◽  
Muscle Tissues ◽  
Poultry Fat

This study was conducted to evaluate the effects of Tenebrio molitor (TM) oil as a total replacement for palm oil and poultry fat in broiler chicken diets on growth performance, nutrient digestibility, pancreatic enzyme activity, selected blood parameters and the lipid fatty acid compositions of liver and breast muscle tissues. A total of 72 seven-day-old female Ross 308 broiler chickens were used. The birds were randomly distributed into three groups with 12 replicates each, using two birds per replicate for 30 days in metabolic cages. The basal diet was supplemented with 5% palm oil, poultry fat or TM oil. There was no effect (p > 0.05) caused by the dietary oil replacement on the birds’ performance and apparent nutrient digestibility. Liver size (p = 0.033), the concentration of hepatic triglycerides (p = 0.049) and total cholesterol (p = 0.048) were reduced by TM oil supplementation. Furthermore, TM oil supplementation increased n-3 and n-6 fatty acids (p = 0.006; p < 0.001, respectively) in breast muscle tissue. In conclusion, the use of TM oil in broiler chickens’ diets did not show any adverse effects on performance, nutrient digestibility and blood biochemical parameters. Moreover, TM oil supplementation improved the fatty acid profiles of liver and breast muscle tissues.

scholarly journals Assessment of Physicochemical Characteristics and Microbiological Quality in Broiler Chicken Breast Muscle (Pectoralis major) Subjected to Different Temperatures and Lengths of Cold Transportation

Foods ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 874
Author(s):  
Muhammad Nizam Hayat ◽  
Ubedullah Kaka ◽  
Awis Qurni Sazili
Keyword(s):  
Broiler Chickens ◽  
Broiler Chicken ◽  
Food Poisoning ◽  
Microbiological Quality ◽  
Physicochemical Characteristics ◽  
Left Breast ◽  
Breast Muscle ◽  
Chicken Breast ◽  
Different Temperatures ◽  
The Impact

Cold truck transportation is considered one of the most integral parts in a food processing chain. However, countless cases of product spoilage and food poisoning incidents have proven that temperature control during transport has been neglected. Literature on the impact of temperature during distribution is scarce. The objective of this study was to investigate the impact of various transportation temperatures and travel duration on the meat quality and microbial population of broiler chicken breast muscle. Sixty broiler chickens (42 days old) were slaughtered and eviscerated; they then had their breast muscles removed (each bird provided two breast muscle samples: left breast and right breast), which were wrapped in plastic film. All 120 packed boneless breasts (PBBs) were then placed at −18 °C for 24 h. After 24 h, the 60 PBB samples were subjected to transportation for 1 h at 4 °C (20 PBBs), 10 °C (20 PBBs), and 15 °C (20 PBBs) while the remaining 60 samples were transported for 5 h at 4 °C (20 PBBs), 10 °C (20 PBBs), and 15 °C (20 PBBs) before analyses. The samples transported at higher temperatures exhibited higher populations of coliform and Salmonella than those transported at lower temperatures. A significant impact of the transportation duration on the Salmonella population was only observed in samples transported at 4 °C for 5 h. However, a significant impact of transportation temperature on color was only recorded for the redness (a*) values, where the samples transported at higher temperatures exhibited higher redness (a*) values. Significant increases in lightness (L*) and yellowness (b*) values as well as decreases in redness (a*) and pH values were recorded in samples subjected to longer durations of transportation across all the temperatures observed in this study.

Heat or cold chronic stress affects organ weights and Hsp70 levels in chicken embryos

2001 ◽  
Vol 81 (1) ◽  
pp. 83-87 ◽  
Author(s):  
P. E. N. Givisiez ◽  
M. M. da Silva ◽  
C. M. Mazzi ◽  
M. I. T. Ferro ◽  
J. A. Ferro ◽  
...  
Keyword(s):  
Cold Stress ◽  
Embryo Development ◽  
Chicken Embryo ◽  
Incubation Temperature ◽  
Weight Percent ◽  
Breast Muscle ◽  
Hsp70 Expression ◽  
Organ Weights ◽  
The Brain ◽  
Different Tissues

This study was carried out with the objective of evaluating the effect of heat (38.8°C) or cold (35.8°C) stress on chicken embryo development and tissues Hsp70 levels, after the 13th day of incubation. Embryo weight (percent egg weight), organ weight (percent embryo weight) and Hsp70 levels (ng Hsp70 mg–1 total protein) in different tissues (liver, breast muscle, heart, lungs, brain and kidney) were studied at the end of incubation. Cold stress induced a lower embryo weight and lower kidney and lungs weights, whereas heart and liver were lighter in heat-stressed embryos. An interaction between temperature and age was obtained only for Hsp70 levels in kidney and heart. Cold-stressed embryos showed higher Hsp70 levels in the brain, lungs and liver; a decrease in brain and breast muscle Hsp70 levels was seen from the 19th to 20th days in control embryos. Hsp70 levels increased with age in kidneys of control embryos and in heart of heat- and cold-stressed embryos. In conclusion, this study showed that chicken embryo organ weights are affected by incubation temperature, and that Hsp70 expression is tissue dependent (higher levels being seen in the brain) being cold-stress more effective in increasing Hsp70 levels in most studied tissues. Key words: Chicken embryo, development, Hsp70, incubation temperature

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