Effect of Exposure to a Short-Duration Sound on the Stress Response of Chickens

Wb, Gross

doi:10.2307/1591276

Cited by 44 publications

(28 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It increased from 0.41 ± 0.07 ng/ml in control broilers to 3.20 ± 0.69 ng/ml and 4.74 ± 0.87 ng/ml in broilers exposed to noise of 80 dB and 100 dB, respectively, whereas plasma corticosterone concentration in broilers that were placed in the test room and not exposed to noise was 1.32 ± 0.34 ng/ml. Stress response induced by exposure to a sound of 104 dB for 30 sec was reported in chickens also by Gross (1990). The increased level of plasma corticosterone in broilers before slaughter is not only indicative of impaired welfare but it also has an impact on the quality of meat.…”

Section: Discussionmentioning

confidence: 91%

“…Book and Bradley (1990) found panic and aggression in turkeys exposed to noise. The relationship between noise and indicators of stress in poultry was studied by Borg (1981), McFarlane and Curtis (1989), McFarlane et al (1989b), Gross (1990), Maxwell (1993), Lazarević et al (2000), and Campo et al (2005). Noise also has an important psychological component, and therefore is a potential source of fear in animals.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Stress in Broiler Chickens Due to Acute Noise Exposure

Chloupek¹,

Voslářová²,

Chloupek³

et al. 2009

Acta Vet. Brno

View full text Add to dashboard Cite

Stress effects from acute noise exposure were monitored in a group of ROSS 308 broiler chickens (n = 80), aged 42 days. The experiment simulated slaughterhouse sounds to which the broilers were exposed for 10 min in the test enclosure. Effects of acute noise exposure at two different levels (80 dB and 100 dB) were evaluated on the basis of examinations of selected biochemical plasma indicators and tonic immobility tests. Noise stimuli of both 80 dB and 100 dB intensities for 10 min induced a significant elevation in plasma corticosterone levels. Broilers that were exposed to noise stimuli of 100 dB also exhibited a significant increase in the cholesterol level and total protein level. Exposure to noise stimuli did not influence the glucose level and triglyceride concentrations. The duration of tonic immobility was not affected by noise stimuli in our experiment. However, noise exposure at a 100 dB level decreased the number of attempts to induce tonic immobility in broilers.

show abstract

Section: Discussionmentioning

confidence: 91%

mentioning

confidence: 99%

Stress in Broiler Chickens Due to Acute Noise Exposure

Chloupek¹,

Voslářová²,

Chloupek³

et al. 2009

Acta Vet. Brno

View full text Add to dashboard Cite

show abstract

“…For haematological examinations, the samples were stabilized by heparin. Blood samples were obtained after 20 hours because the H/L ratio response to short-duration stress peaks after 20 h (Gross 1990;Zulkifli et al 2002).…”

Section: Animals and Their Treatmentmentioning

confidence: 99%

“…Unusually low levels of environmental stimuli are characterized by H/L ratios between 0.2 and 0.3, demonstrating the need for some stress (stimulation) in order to maintain more efficient biochemical activity. Gross (1990) reports that exposure to a short-term physical stressor resulted in changes in blood profiles such as fluctuation in H/L ratios within 18 h. The response peaked at about 20 h and returned to normal at about 30 h.…”

mentioning

confidence: 99%

Haematological Profile of Broiler Chickens under Acute Stress Due to Shackling

et al. 2007

View full text Add to dashboard Cite

BedáÀová I., E. Vosláfiová, V. Veãerek, V. Pi‰tûková, P. Chloupek: Haematological Profile of Broiler Chickens under Acute Stress Due to Shackling. Acta Vet. Brno 2007, 76: 129-135.The aim of our experiment was to assess the stress response of broilers to different periods of shackling when conditions similar to practice at slaughterhouses were simulated. In this study, heterophil to lymphocyte (H/L) ratios were used as an index of stress status. Also total erythrocyte and leukocyte counts, haematocrit, haemoglobin, mean cell volume (MCV), mean cell haemoglobin (MCH) and mean cell haemoglobin concentration (MCHC) values were monitored and differential leukocyte count was assessed. At 42 days of age, 10 broilers were subjected to a 2-min shackling period (S2 group) and other 10 broilers were subjected to a 5-min shackling period (S5 group). Broilers were suspended from shackles placed in an experimental processing line and other stress factors (e.g. preslaughter transport, crating and ambient disturbances) were eliminated in order to assess the stress response to shackling particularly. When compared with an unshackled control, both S2 and S5 groups exhibited a highly significant increase in heterophil counts and H/L ratio 20 h following shackling. When compared, the mean value of the H/L ratio of S2 and S5 chickens was higher due to the longer shackling period. The difference, however, was not statistically significant. In addition, S5 broilers exhibited a statistically significant elevation in the number of basophils in comparison with the control. When compared with the control, S2 broilers exhibited a significant decrease in haemoglobin level, a highly significant decrease in erythrocyte cell count and MCHC values due to shackling. Both S2 and S5 groups of broilers manifested a highly significant increase in MCV values and markedly depressed erythrocyte count and MCHC values in comparison with unshackled broilers. When S2 and S5 broilers were compared, none of the monitored haematological indices of the erythrocyte count manifested any significant changes due to the different periods of shackling. Results of our experiment proved that the preslaughter shackling induced considerable changes in haematological indices of both leukocyte and erythrocyte count in broilers and indicated a markedly increased level of stress effects. In conclusion, using a method that eliminates the stress associated with the shackling of live birds before electrical stunning should be considered as a better option as far as bird welfare is concerned.

show abstract

“…Hamm 6 kronik gürültü stresinin kanatlılarda yumurta verimini düşürdüğünü vurgulamıştır. Gross 7 , 104 dB düzeyinde gürültüyle 30 sn. süresince uyarılan tavuklarda akut stresin geliştiğini bildirmiştir.…”

unclassified

The Effects of Acute Noise on Fear and Some Stress Parameters in Broilers

Türkyilmaz¹,

Nazlıgül²,

Dereli³

et al. 2009

Kafkas Univ Vet Fak Derg

View full text Add to dashboard Cite

ÖzetBu çalışmanın amacı, akut gürültünün etlik piliçlerde korku ve bazı stres göstergeleri üzerine etkilerinin araştırılmasıdır. Araştırmada günlük yaştaki 192 etlik piliç (Ross 308) civciv, her grupta 24'er hayvan (12 erkek, 12 dişi) olacak şekilde 4 ayrı gruba iki tekrarlı şekilde rasgele dağıtılmıştır. 42 günlük normal yetiştirme dönemi sonunda hayvanlar ses düzeyi 80, 100, 120 ve 55 (Kontrol) dB olacak şekilde ayarlanmış ses düzenekleriyle 15 dk. süreyle akut gürültüye maruz bırakılmıştır. Analiz sonucunda 100 ve 120 dB gürültü düzeylerinde kortikosteron düzeyinin önemli oranda yükseldiği saptanmıştır (P<0.001). Gürültünün tüm deneme gruplarında kolesterol düzeyini artırmasına karşın, glukoz düzeyini yalnızca 120 dB gürültü düzeyinde artırdığı saptanmıştır. Diğer taraftan, gürültü düzeyinin artmasına bağlı olarak total protein düzeyinin düştüğü ortaya konulmuştur. Tonik Hareketsizlik Testi (TI), TI süreleri arasında önemli bir farklılık olmasa da, akut gürültünün hayvanlarda korku oluşumu üzerine önemli bir etkisinin olduğunu göstermiştir. Bu anlamda TI için gerekli ortalama deneme sayısı ise 100 ve 120 dB gürültü gruplarında (1.4 ve 1.3), kontrol grubuna (1.8) göre daha düşük olarak kaydedilmiştir (P<0.05). Sonuç olarak 100 dB ve üzeri akut gürültünün etlik piliçlerde bazı stres parametrelerini olumsuz etkilediği ve korkuya yol açtığı, bu nedenle hayvanların daha düşük gürültü düzeylerinde bulundurulmaları gerektiği anlaşılmıştır. Anahtar sözcükler: Etlik piliç, Akut gürültü, Stres, Tonik Hareketsizlik Testi The Effects of Acute Noise on Fear and Some Stress Parameters in Broilers SummaryThe aim of this study was to investigate the effects of acute noise on some stress parameters and fear reactions in broilers. Day old 192 broiler chicks (Ross 308) were randomly allocated to 4 different treatment groups containing 24 birds (12 male, 12 female) for two replication. After 42 days regular rearing period, birds were exposed to 55 (control), 80, 100 and 120 dB acute noise for 15 min. with a device hanged to their rooms. Results showed that corticosterone levels at 100 dB and 120 dB noise levels increased significantly (P<0.001). It was revealed that acute noise had increased blood cholesterole levels in all treatment groups, but increased glucose levels only in 120 dB noise group. Conversely total protein level decreased according to increase in noise level. Tonic Immobility Test (TI) in which there were no significant differences between TI durations for all treatment groups, revealed that acute noise has negative effect on fear in broilers. On this context, TI trials were recorded as high in control group (1.8) than 100 and 120 dB groups (1.4 ve 1.3). It was concluded that acute noise over 100 dB have negative effects on some stress parameters and fear in broilers, for that reason broilers should housed at lower noise levels.

show abstract

Effect of Exposure to a Short-Duration Sound on the Stress Response of Chickens

Cited by 44 publications

References 3 publications

Stress in Broiler Chickens Due to Acute Noise Exposure

Stress in Broiler Chickens Due to Acute Noise Exposure

Haematological Profile of Broiler Chickens under Acute Stress Due to Shackling

The Effects of Acute Noise on Fear and Some Stress Parameters in Broilers

Contact Info

Product

Resources

About