The effect of heat stress on thyroid hormone response and meat quality in turkeys of two genetic lines

Chiang, Wen Tsuo; Booren, A. M.; Strasburg, Gale M.

doi:10.1016/j.meatsci.2008.02.012

Cited by 60 publications

(51 citation statements)

References 30 publications

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“…Poultry production and consumption have increased rapidly, and the per capita consumption of poultry meat is expected to continue to grow because of consumer demands and the perceived health benefits of poultry meat (Petracci et al, 2009). Thus, the poultry industry continues to strive to improve growth rates and breast meat yields to produce bigger animals in a shorter period of time (Remignon et al, 2000;Chiang et al, 2008;Lopez et al, 2011). Meat-type chickens reach market weight as early as 6 weeks old, and have high breast meat yields (Fanatico et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

“…However, genetic selection for muscle growth and muscling in poultry has altered many characteristics of the modern commercial bird, especially the breast muscle (Chiang et al, 2008). Generally, broiler-type chickens that have a greater muscle mass tend to exhibit a greater number and size of muscle fibers in the pectoralis muscle than layertype chickens (Scheuermann et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Muscle fiber characteristics of pectoralis major muscle as related to muscle mass in different Japanese quail lines

Choi

Shin

Wick

et al. 2013

Animal

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The objectives of this study were to investigate the muscle fiber characteristics of the pectoralis major muscle, and its relation to growth performance in the random bred control (RBC) and heavy weight (HW) Japanese quail lines at 42 days of age. The HW line had greater body (232.0 v. 100.2 g, P , 0.001) and pectoralis major muscle (19.0 v. 6.2 g, P , 0.001) weights than the RBC line. Color differences were observed between the superficial and deep regions of the pectoralis major muscle, with the superficial region showing a higher value of lightness than the deep region of the RBC or HW lines (P , 0.001). The percentage of the superficial region in the pectoralis major muscle was higher in the HW line compared with the RBC line (46.2% v. 38.0%, P 5 0.017). There were no significant differences in the total fiber number in the superficial and deep regions between the two quail lines (P 5 0.718). The HW quail line showed a larger mean fiber cross-sectional area (CSA; 375.5 v. 176.6 mm 2 , P , 0.001) and type IIA fiber CSA (243.7 v. 131.9 mm 2 , P , 0.001) than the RBC quail line. The HW line also had greater CSA percentage (60.2% v. 34.2%, P , 0.001) and number percentage (41.6% v. 14.2%, P , 0.001) of type IIB fibers, although there were no significant differences in type IIB fiber CSA between the RBC and HW lines (P 5 0.219). Therefore, greater body and muscle weights of the HW line are caused by differences in muscle fiber characteristics, especially the proportion of type IIB fiber and the CSA of type IIA fiber, compared with the RBC line. The results of this study suggest that muscle fiber hypertrophy has more impact on body and muscle weights of the different quail lines than muscle fiber hyperplasia.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Muscle fiber characteristics of pectoralis major muscle as related to muscle mass in different Japanese quail lines

Choi

Shin

Wick

et al. 2013

Animal

View full text Add to dashboard Cite

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“…High ambient temperatures not only cause heavy economic losses in this industry by reducing feed consumption and increasing mortality rate but have negative influence on meat quality (Chiang et al, 2008), too. Also, HS has been associated with an increased number of heterophils and decreased number of lymphocytes.…”

Section: Introductionmentioning

confidence: 99%

Effect of bee pollen and propolis (bee glue) on growth performance and biomarkers of heat stress in broiler chickens reared under high ambient temperature

Hosseini¹,

Vakili-Azghandi²,

Ahani³

et al. 2016

J. Anim. Feed Sci.

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“…High ambient temperatures not only cause heavy economic losses to the poultry industry through reduced feed intake and an increased mortality rate but also result in inferior meat quality (Chiang et al, 2008). It has been shown clearly that exposing broilers to continuously high ambient temperatures, especially during the finisher phase, leads to chronic HS followed by decreased productive performance (Ahmad et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Heat shock protein 70 mRNA expression and immune response of heat-stressed finishing broilers fed propolis (bee glue) supplementation

et al. 2015

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Abstract. This 2 × 2 factorial experiment investigated the efficacy of propolis (bee glue; BG) in ameliorating heat-stress-induced impairment of growth performance, the hematological profile, intestinal morphology, and biomarkers of heat stress in broilers. Two hundred and forty 21-day old Ross 308 male broiler chicks were allocated to four experimental treatments in six replicates of 10 birds each. The main factors were composed of diet (basal diet or addition of 3 g kg −1 of BG) and temperature (thermoneutral or heat stress). Broilers subjected to heat stress had reduced average daily gain (ADG) and average daily feed intake (ADFI); a higher heterophil level and heterophil-to-lymphocyte ratio, and a lower lymphocyte level; upregulated mRNA expression of 70 kDa heat shock protein (HSP70) levels in heart, kidney, and breast muscle; and shorter jejunal villus height, deeper crypt depth, and a lower ratio of villus-height-to-crypt-depth compared with those broilers raised in thermoneutral conditions. Supplemental BG increased ADG, jejunal villus height, and the villus-height-to-crypt-depth ratio and decreased the feed-to-gain ratio and creatine kinase and lactate dehydrogenase levels in breast muscle compared with the birds who received control diets. The inclusion of BG in diets significantly decreased the mRNA expression of HSP70 levels in heart, kidney, and breast muscle in birds subjected to heat challenge. These results indicate that the BG-supplemented diet was effective in partially ameliorating adverse effects in resistance to heat stress in broiler chickens.

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The effect of heat stress on thyroid hormone response and meat quality in turkeys of two genetic lines

Cited by 60 publications

References 30 publications

Muscle fiber characteristics of pectoralis major muscle as related to muscle mass in different Japanese quail lines

Muscle fiber characteristics of pectoralis major muscle as related to muscle mass in different Japanese quail lines

Effect of bee pollen and propolis (bee glue) on growth performance and biomarkers of heat stress in broiler chickens reared under high ambient temperature

Heat shock protein 70 mRNA expression and immune response of heat-stressed finishing broilers fed propolis (bee glue) supplementation

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