Effects of stocking density and dietary vitamin C on performance,
                    meat quality, intestinal permeability, and stress indicators in broiler
                    chickens

Yu, Dong Gwon; Namgung, Nyun; Kim, Jong Hyuk; Won, Seung Yeon; Choi, Woo June; Kil, Dong Yong

doi:10.5187/jast.2021.e77

Cited by 17 publications

(14 citation statements)

References 36 publications

(60 reference statements)

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“…Compared to low SD-raised chickens, high SD-raised chickens showed a decrease in body weight gain and feed intake in the starter and whole phases and increased FCR in the finisher phase [ 26 ]. The current findings are similar to those of Yu et al [ 27 ] and Goo et al [ 28 ], who found that broilers reared at high SD spaces (18 birds/m 2 ) had lower live body weight, body weight gain, and feed consumption, as well as impaired intestinal barrier function, without affecting meat quality or anti-oxidant conditions in the liver. In terms of muscle quality, the high SD group had significantly lighter breast muscles 45 min and 24 h after slaughter [ 29 ].…”

Section: Resultssupporting

confidence: 92%

“…Plasma corticosterone, serum glucose, cholesterol, total nitrites, and the heterophil/lymphocyte ratio were unaffected [ 6 ]. Another study found that broilers raised on higher SD had higher blood heterophil lymphocyte ratios (H: L) and corticosterone levels [ 29 , 27 ]. The PCV values were reduced, and serum AST concentrations were increased significantly ( p < 0.05) by the increased rate of SD [ 17 ].…”

Section: Resultsmentioning

confidence: 99%

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Impacts of stocking density rates on welfare, growth, and hemato-biochemical profile in broiler chickens

Zabir¹,

Miah²,

Alam³

et al. 2021

J Adv Vet Anim Res

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Objective: The study investigated the effect of different stocking density (SD) rates on the welfare, growth, and hemato-biochemical parameters in broiler chickens. Materials and Methods: 106 broiler chicks of 10 days old were used and assigned into four groups: A, B, C, and D. The chicks of group A were reared in floor space containing one bird per square foot area (SD1.0). The chicks of groups B, C, and D were reared at 1.5, 2.0, and 2.5 birds per square foot area (SD1.5, SD2.0, and SD2.5). Welfare, body weight, and hemato-biochemical parameters were assessed and monitored by physical observation and laboratory methods. Results: The birds reared at SD2.0, and SD2.5 rates showed increased panting breathing. Wet feces adhered below the vent. There were a significant number of birds showing dirtiness of body and feathers. Birds reared in SD2.5 were familiar with moist litters and high ammonia smell. Foot-pad dermatitis, scratches, and blister formation were detected in the leg. The study revealed that the higher SD negatively correlated to the welfare behavior indicators. Live body weight was significantly ( p < 0.05) decreased in birds reared at higher SD rates. Birds housed in SD1.0 and SD1.5 are optimum for body weight and improved feed conversion ratio. The hemato-biochemical parameters of birds reared at various SD rates did not differ. The total leucocyte count increased significantly, while total serum proteins decreased gradually as SD rates increased. Conclusion: This work explores that higher SD negatively affects welfare and growth performance in broiler chickens.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Impacts of stocking density rates on welfare, growth, and hemato-biochemical profile in broiler chickens

Zabir¹,

Miah²,

Alam³

et al. 2021

J Adv Vet Anim Res

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show abstract

“…Jahanian and Mirfendereski (2015) found that 500 mg/kg vitamin C supplementation had no significant effect on the growth performance of broiler chickens subjected to high SD but decreased plasma and yolk MDA. A recent study by Yu et al (2021) observed that 200 mg/kg had no marked effects on the growth performance, meat quality, and intestinal permeability of broiler chickens stocked at high density (12 birds/m 2 ). Shewita et al (2019) reported that 200 mg/kg vitamin C improved final body weight, feed intake and decreased mortality in broilers reared in high SD (15 birds/m 2 ).…”

Section: Vitamin Cmentioning

confidence: 95%

“…Shewita et al (2019) reported that 200 mg/kg vitamin C improved final body weight, feed intake and decreased mortality in broilers reared in high SD (15 birds/m 2 ). The inconsistency in the findings might be attributed to the strain of the animal or different SD used (Yu et al, 2021). Vitamin C was also reported to decrease plasma corticosterone caused by high SD in broilers (Mirfendereski and Jahanian, 2015).…”

Section: Vitamin Cmentioning

confidence: 97%

Environmental Stress in Chickens and the Potential Effectiveness of Dietary Vitamin Supplementation

Akinyemi

Adewole

2021

Front. Anim. Sci.

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Environmental stressors can promote the vulnerability of animals to infections; it is therefore, essential to understand how stressors affect the immune system, the adaptive capacity of animals to respond, and effective techniques in managing stress. This review highlights scientific evidence regarding environmental stress challenge models and the potential effectiveness of vitamin supplementation. The major environmental stressors discussed are heat and cold stress, feed restriction, stocking density, and pollutants. Much work has been done to identify the effects of environmental stress in broilers and layers, while few involved other types of poultry. Studies indicated that chickens' performance, health, and welfare are compromised when challenged with environmental stress. These stressors result in physiological alterations, behavioral changes, decreased egg and meat quality, tissue and intestinal damage, and high mortalities. The application of vitamins with other nutritional approaches can help in combating these environmental stressors in chickens. Poultry birds do not synthesize sufficient vitamins during stressful periods. It is therefore suggested that chicken diets are supplemented with vitamins when subjected to environmental stress. Combination of vitamins are considered more efficient than the use of individual vitamins in alleviating environmental stress in chickens.

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“…The H:L ratio in the blood was analyzed according to the method of Lentfer et al., 2015 with a minor modification. The detailed procedure has been reported in the previous experiment ( Yu et al, 2021 ).…”

Section: Methodsmentioning

confidence: 99%

Comparison of stress biomarkers in laying hens raised under a long-term multiple stress condition

2022

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Effects of stocking density and dietary vitamin C on performance, meat quality, intestinal permeability, and stress indicators in broiler chickens

Abstract: Competing interestsNo potential conflict of interest relevant to this article was reported. Funding sourcesState funding sources (grants, funding sources, equipment, and supplies). Include name and number of grant if available.

Cited by 17 publications

References 36 publications

Impacts of stocking density rates on welfare, growth, and hemato-biochemical profile in broiler chickens

Impacts of stocking density rates on welfare, growth, and hemato-biochemical profile in broiler chickens

Environmental Stress in Chickens and the Potential Effectiveness of Dietary Vitamin Supplementation

Comparison of stress biomarkers in laying hens raised under a long-term multiple stress condition

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