• Asian-Australasian Journal of Animal Sciences
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• 제19권1호
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• pp.48-54
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• 2006

Roxarsone (3-nitro-4-hydroxyphenylarsonic acid) has been used as feed additives in poultry industries to improve production and control coccidiosis. The effect of high dietary levels of Roxarsone (ROX) on the performance and function of internal organs and the kinetics of recovery as well as its after-effects were examined in laying hens. The inclusion rates of ROX were 0, 100, 200, 300, and 400 mg per kg feed. Inclusion up to 200 mg did not show any adverse effects (p>0.05), whereas in the 300 and 400 mg groups, significant effects, particularly in the latter, were observed for three weeks after ROX addition (p<0.05). Recovery of the physical appearance occurred soon after ROX addition was withdrawn. Recovery of performance and internal organs, however, appeared to be dependent on the amount of residual ROX in the body; as the amount of ROX decreased, the toxic effect of ROX also decreased. In the third week after the withdrawal of ROX, complete recovery was observed in the lower dosage groups (100 or 200 mg groups) (p>0.05), whereas in the higher dosage groups (300 or 400 mg groups), recovery took at least five weeks; when complete recovery was observed in egg production and in liver weight (p>0.05). On the other hand, ROX might have damaged the liver and other tissues. The recovery of liver weight was probably due to accumulation of fatty particles rather than repair. It appeared, therefore, there were little after-effects of ROX on the hen's physical appearance, but some internal organs were probably damaged.

• Asian-Australasian Journal of Animal Sciences
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• 제20권3호
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• pp.412-417
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• 2007

An experiment was conducted to determine the distribution of nitrogen-15 in tissues of laying hens receiving different levels of $^{15}N$-CCC in diets. Twenty brown laying hens were divided into four groups and randomly assigned into one of four dietary treatment groups consisting of 0, 5, 50 and 100 ppm $^{15}N$-CCC inclusion. The hens were individually fed with the $^{15}N$-CCC diets in battery cages for 11 days and then all hens restored to feeding on the control diet for 7 days. After eleven days, eight hens were slaughtered, and the others were slaughtered seven days after $^{15}N$-CCC diets withdrawal. Samples of blood, liver, heart and meat were collected and their $^{15}N$ contents were determined. The ${\delta}^{15}N$ excess (${\delta}^{15}N$-ex) and atom percentage excess in $^{15}N$ were calculated. The ${\delta}^{15}N$-ex and atom percentage excess $^{15}N$ increased significantly (p<0.05) with increasing levels of $^{15}N$-CCC in diets in all tissues after feeding $^{15}N$-CCC diets for eleven days. The highest concentration of ${\delta}^{15}N$-ex and atom percentage excess $^{15}N$ were detected in blood, followed in order by liver, heart and thigh meat. The concentrations reduced significantly (p<0.05) after $^{15}N$-CCC diets were withdrawn. Comparison between treatment groups showed that ${\delta}^{15}N$-ex and atom percentage excess $^{15}N$ were still higher in hens that had been fed diets with higher levels of $^{15}N$-CCC. This study showed that nitrogen-15 was distributed in blood, liver, heart and meat of laying hens.

• 한국가금학회지
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• 제16권3호
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• pp.169-174
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• 1989

사육기간이 535일인 산란노계의 가슴근육, 다리근육, 간장 및 모래주머니에서 총지질을 추출하여 총지질에서 중성지질, 인지질 및 당지질을 분획 하고, 각 지질의 지방산조성을 분석 비교하였다. 총지질은 간장에서 가장 많이 함유되어 있었으며 가슴근육이 제일 적었다. 총지질에 대한 중성지질, 인지질 및 당지질의 함량 비율은 각각 다리근육, 가슴근육 및 모래주머니에서 높게 나타났다. 총지질과 중성지질의 주요 지방산은 palmitic, stearic, oleic 및 lindeic acid이었고, 인지질은 palmitic, stearic, oleic, linoleic, arachidonic 및 docosahexaenoic acid, 그리고 당지질의 경우는 palmitic, palmitoleic, stearic, oleic 및 linoleic acid 이었다. .중성지질은 oleic, 인지질은 docosahexaenoic, 그리고 당지질은 linoleic acid가 다른 지질에 비해 많이 함유되어 있었다. 불포화지방산의 함량 비율은 총지질과 중성지질의 경우 다리근육, 인지질은 가슴근육, 당지질은 간장에서 비교적 많이 구성되어 있었다. 다가 불포화지방산은 인지질에 많이 함유되어 있었다.