Impaired development of broiler chickens by stress mimicked by corticosterone exposure

Lin, Hai; Sui, SJ; Jiao, Hongchao; Buyse, Johan; Decuypere, Eddy

doi:10.1016/j.cbpa.2005.12.030

Cited by 109 publications

(64 citation statements)

References 27 publications

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“…Results of the present study showed that breeder age had no effect on organ weights measured, which is in agreement with Maiorka et al (2004) (Table 3). Previous studies showed an increase in liver weight (Malheiros et al 2003;Lin et al 2006) and decrease in spleen, bursa of fabricius, and heart weights under stressful conditions (Puvadolpirod and Thaxton 2000;Lin et al 2006). There was no lighting regimen effect on relative weights of heart, liver, and bursa of fabricius.…”

Section: Resultsmentioning

confidence: 94%

Effect of breeder age and lighting regimen on growth performance, organ weights, villus development, and bursa of fabricius histological structure in broiler chickens

El-Sabry¹,

Yalçın²,

Turgay-İzzetoğlu³

2015

CZECH J ANIM SCI

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ABSTRACT:This study was carried out to investigate the effect of breeder age and lighting regimen on performance, some organ weights, villus development, and bursa of fabricius histological structure in broiler chickens. A total of 384 one-day-old chicks were obtained from two Ross broiler breeder flocks at 32 (young;Y) and 49 (old, O) weeks of age. Chicks from each breeder age were reared under 18 h light : 6 h dark (18 L : 6 D) (control; CL) or 14 L : 4 D : 2 L : 4 D (split darkness, SD). Body weight, feed intake, feed conversion ratio, and mortality were measured weekly during the experiment. At 21 days of age, liver, heart, spleen, and bursa of fabricius weights were recorded, gastrointestinal tract and jejunum lengths were measured, and histomorphometry of villi and bursa of fabricius structure were investigated. Interaction between breeder age and lighting regimen was observed, where Y-CL chicks had the lightest body weight from 7 to 35 days (P < 0.05). Neither breeder age nor lighting regimen influenced feed conversion ratio. SD chicks had longer (P < 0.05) gastrointestinal tract and jejunum, and wider villus in comparison to CL chicks. Lower relative spleen weight was observed in CL chicks compared to SD ones (P < 0.05). It was concluded that split darkness lighting regimen could be used for broiler chickens from young breeders to improve live body weight without affecting feed conversion ratio.

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Section: Resultsmentioning

confidence: 94%

Effect of breeder age and lighting regimen on growth performance, organ weights, villus development, and bursa of fabricius histological structure in broiler chickens

El-Sabry¹,

Yalçın²,

Turgay-İzzetoğlu³

2015

CZECH J ANIM SCI

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“…This is probably due to differences in the CP, which was performed using either a conventional oven or a warm water bath by those cited authors. In the study by Lin et al (2006), stress mimicked by the administration of corticosterone produced a significant decrease in fillet yield and an increase in abdominal fat percentage. As stated earlier, apart from a lack of significant differences for abdominal fat values (fat weight and fat yield), we have the same tendency in our results.…”

Section: Discussionmentioning

confidence: 98%

Influence of a preen gland secretion on growth and meat quality of heavy broilers

Madec¹,

Pageat²,

Bougrat³

et al. 2008

Animal

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Preen gland secretions were obtained from several hens that were rearing their chicks and the content of these secretions was analysed. From these results, a synthetic analogue of the secretions was created (given the title Mother Hen Uropygial Secretion Analogue, or MHUSA, in this study). According to a blinded, controlled experimental design, heavy broilers (strain SASSO T56N) were reared from 1 day of age in an environment treated with either MHUSA or control. At 80 days the birds were slaughtered. Post mortemcarcass weight, abdominal fat and fillet weights were then measured. Colour, pH and yield were also measured as indicators of meat quality. Broilers exposed to MHUSA had both higher carcass weights and higher fillet weights compared with control-treated birds (P , 0.05). Abdominal fat, pH, water loss and colorimetry results were similar between the treatment groups at all time points (24 h and 6 days post mortem) and also after a cooking procedure. The meat from the MHUSA birds was less yellow compared with control. It is concluded that constant exposure to MHUSA from rearing until slaughter improves growth rate in broilers without significantly affecting meat quality.

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“…Buyse et al, 1987;Post et al, 2003;Lin et al, 2006), inflict involution of spleen (Malheiros et al, 2003;Post et al, 2003), and increase the mass of adrenals (Selye, 1950;see Mormede et al, 2007) and liver (Buyse et al, 1987;Malheiros et al, 2003;Lin et al, 2006). The mass of heart, for its part, can Table 2 Percentage of animals with bite marks on the leather side of their skin, severity of bite scars on a subjective scale where 0 denotes 'no bite marks' and 5 'almost the whole skin covered with marks' (mean 6 s.e.…”

Section: Discussionmentioning

confidence: 99%

Gnawing bones as enrichment for farmed blue foxes (Vulpes lagopus)

Ahola

Turunen

Mononen

et al. 2010

Animal

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According to present acts and regulations, farmed foxes shall have a gnawing or other enrichment object in their cages. However, research on the welfare effects of gnawing objects has been scarce. We assessed physiology and health, that is weight development, urinary cortisol-creatinine ratio, serum cortisol level after adrenocorticotropic hormone administration, internal organ masses and incidence of gastric ulcerations as well as dental and overall oral health, in pair-housed juvenile blue foxes that were housed either with or without a possibility to interact with bones (cattle femur) during their growing season (July to December). The results show that the physiological effects of the possibility to interact with bones were either non-significant or suggested that competition for bones may jeopardize the welfare of subordinate individuals. However, the results clearly show that gnawing bones are beneficial for the dental health of farmed foxes.

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Impaired development of broiler chickens by stress mimicked by corticosterone exposure

Cited by 109 publications

References 27 publications

Effect of breeder age and lighting regimen on growth performance, organ weights, villus development, and bursa of fabricius histological structure in broiler chickens

Effect of breeder age and lighting regimen on growth performance, organ weights, villus development, and bursa of fabricius histological structure in broiler chickens

Influence of a preen gland secretion on growth and meat quality of heavy broilers

Gnawing bones as enrichment for farmed blue foxes (Vulpes lagopus)

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