• 한국동물학회:학술대회논문집
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• 한국동물학회 1996년도 공동 춘계학술대회
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• pp.50.1-50
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• 1996

No Abstract, See Full Text

• Asian-Australasian Journal of Animal Sciences
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• 제21권8호
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• pp.1183-1188
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• 2008

The present study aimed to determine the effects of different storage materials and storage period on some hatchability traits of Japanese quail (Coturnix coturnix japonica) eggs. A total of 32 male and 102 female quail (twelve weeks of ages) were housed in multiple-bird cages. Eggs laid were divided into three groups with respect to the period of storage (I = 1st, 2nd and 3rd days, II = 6th, 7th and 8th days, III = 12th, 13th and 14th days) prior to incubation. A total of 816 eggs was stored in 3 different storage environments during each storage period (B = no use of any storage material, P = use of perlite, H = use of hay) and kept in environmental conditions, where the temperature was $21^{\circ}C$ and relative humidity was 75%, prior to incubation. Statistical analyses were performed after the exclusion of values pertaining to non-fertile eggs (190 eggs) from the data set. The fertility rate of the eggs in the experiment was 76.7%. In the present study, the influence of storage material and different storage periods on egg weight loss were found to be statistically significant (p<0.01). Upon the comparison of hatchability of fertile eggs values, the influence of storage material was determined to be significant (p<0.05), and the influence of storage period was demonstrated to be significant (p<0.01). The storage materials used were determined not to have any influence on early and late embryonic death rates. Perlite was concluded to be safe for use in the storage of hatching eggs. The extension of the storage period (more than 8 days) resulted in decreased hatchability values of fertile eggs in each group.

• 한국축산식품학회지
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• 제42권1호
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• pp.34-45
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• 2022

Spirulina platensis was included at 2.5%, 5%, and 7.5% of the diet as a phytobiotic either as a crude preparation or after enrichment by a biosorption process and fed to 126 Japanese quail and the eggs collected and examined for 6 weeks. Assessments were made of physical and chemical characteristics of the eggs. All treatments with added Spirulina increased unsaturated fatty acids and decreased saturated fatty acids with the largest responses for linolenic (omega 3) and oleic (omega 9) acids. The changes in fatty acids were greater with enriched than crude Spirulina. These results suggest that eggs from quail fed with Spirulina may have positive effects on human health.

• Asian-Australasian Journal of Animal Sciences
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• 제20권1호
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• pp.19-24
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• 2007

Covariance components and genetic parameters of weekly live body weight from hatching to six weeks of age and age of sexual maturation were estimated in a laying type Japanese quail line. The univariate and bivariate animal model analysis included hatching group and sex as fixed effects. Each trait was analysed with animal as random effect to fit the additive direct effect. Additional random effects incorporated in the models were changed according to the trait examined. The best model for a trait was chosen based on a likelihood ratio test, comparing the models with and without maternal additive genetic and maternal permanent environmental effects. Heritability estimates of live-weight at hatch and one to six weeks of age with their standard errors were 0.22${\pm}$0.088, 0.39${\pm}$0.099, 0.31${\pm}$0.086, 0.38${\pm}$0.056, 0.46${\pm}$0.055, 0.50${\pm}$0.059, and 0.56${\pm}$0.062, respectively. Direct heritability value of age of sexual maturation was moderate (0.24${\pm}$0.055). The variances due to permanent environmental effect of dam after one week of age and maternal genetic effect after two weeks of age were not important sources of variation. The correlations between direct and maternal genetic effects were negative and ranged from high to moderate values (-0.21 to -0.83). Among the weekly live weights, genetic correlations were generally high between not only successive but also early and late weightings. It suggests that selection for final weight may be based on early weight records. Genetic correlations between age of sexual maturation and live weights were low, favourable but had high standard errors. These results indicate that selection for high weight will potentially result in lower age of sexual maturation only with accurate determination of breeding values.

• Asian-Australasian Journal of Animal Sciences
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• 제29권9호
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• pp.1331-1337
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• 2016

The aim of this study was to compare the growth performance, fiber characteristics of the pectoralis major muscle, and meat quality characteristics in the heavy weight (HW) and random bred control (RBC) quail lines and genders. The HW male exhibited more than two times greater body (245.7 vs 96.1 g, p<0.05) and pectoralis major muscle (PMW; 37.1 vs 11.1 g, p<0.05) weights compared to the RBC female. This growth performance in the HW line was associated with a greater muscle fiber area (1,502 vs $663.0{\mu}m^2$, p<0.001) compared to the RBC line. Greater muscle mass of the HW male was accompanied by a higher percentage of type IIB fiber compared to the HW female (64.0% vs 51.0%, p<0.05). However, muscle fiber hyperplasia (increase in fiber number) has had a somewhat limited effect on PMW between the two lines. On the other hand, the HW line harboring a higher proportion of type IIB fiber showed rapid pH decline at the early postmortem period (6.23 vs 6.41, p<0.05) and lighter meat surface (53.5 vs 47.3, p<0.05) compared to the RBC line harboring a lower proportion of type IIB fiber. There were no significant differences observed in the measurement of water-holding capacity including drip loss (2.74% vs 3.07%, p>0.05) and cooking loss (21.9% vs 20.4%, p>0.05) between the HW and RBC lines. Therefore, the HW quail line developed by selection from the RBC quail, was slightly different in the meat quality characteristics compared to the RBC line, and a marked difference was found in growth performance between the two quail lines.

• 한국가금학회지
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• 제23권1호
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• pp.1-7
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• 1996

본 연구는 일본산 메추리(Japanese quail)에 대해 다배체의 유기를 목적으로 성숙된 수컷에 일정량의 분열 억제제를 투여하여, 정자 형성과정 중 이에 미치는 영향과 배수성 정자 세포들의 유기 양상을 분석하고자 하였다. 시험은 25∼30주령된 메추리 수컷 50수를 공시하고 체중 100 g당 37 g의 colcemid를 3일간 연속복강 주사한 후 5일째, 10일째, I5일째 및 20일째 정소세포들의 감수분열 양상을 살펴보고자 각 정원세포들의 中期像, 제 1정모세포들의 중기상 및 제 2정모세포들의 중기상의 양상들을 분석하였다. 분석 결과 colcemid 처리에 따른 전체 정소 세포 중 9.4%％가 배수성 세포로 유기된 반면, colcemid를 투여하지 않은 대조구에서는 2.3％만이 배수성 정소 세포를 나타내어 colcemid 처리에 따른 배수성 정자의 유기 가능성을 시사하고 있다. Colcemid 처리 후 10일째 11.7％의 다배수성 정자세포 유기율을 나타내어 처리 중 가장 높은 유기율을 보인 반면, 정원세포로 성숙되기 5일 이전의 대부분 원시 정세포들은 colcemid의 처리 영향을 거의 받지 않는 것으로 나타났다. 따라서 가금류에 있어 분열 억제제 투여에 의한 정자 세포의 배수성 유기는 정자 형성과정 개시 최소 10∼15일 이전의 원시 정세포에 주로 이의 영향이 미치는 것으로 나타나고, 제1, 2감수 분열 중의 방추사의 억제로 인한 배수성의 유기보다는 정원세포들의 유사분열 중 방추사 형성의 억제에 보다 민감하게 작용하여 배수성 정모세포를 형성하는 것으로 생각된다.

• Asian-Australasian Journal of Animal Sciences
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• 제13권9호
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• pp.1272-1277
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• 2000

The present study was conducted to investigate the feasibility of feeding neem kernel meal (NKM) containing diet to growing Japanese quails, which was incorporated into a standard quail diet at 0, 50, 75 or 100 g/kg in place of soyabean meal and deoiled rice bran. Each diet was offered to 30 quail chicks housed in battery cages from day one to five weeks of age. The chicks fed NKM diets gained 123.3, 122.6 and 121.6 g mean body weight, respectively, and which were significantly (p<0.05) lower than that of 129.9 g gained by those of birds fed the control diets. The feed intake and feed conversion ratio of birds in different dietary groups were not significantly altered due to dietary variations. Mean values for retention of dietary energy, N and Ca were found to insignificantly differ (p>0.05) among the treatment groups but P retention was significantly (p<0.01) lower for quails fed 100 g/kg NKM than those in other groups. Blood biochemical constituents, carcass characteristics and organoleptic test for meat also were not found to vary significantly (p>0.05) due to dietary treatments. The histopathology of liver and kidney tissues from NKM fed quails revealed mild degenerative changes. It could be concluded that inclusion of NKM in quail diet reduced the growth besides inducing mild pathological changes in liver and kidney tissues.

• Animal Bioscience
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• 제36권1호
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• pp.98-107
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• 2023

Objective: Current quail production is configured as an economic activity in scale. Advancements in quail nutrition have been limited to areas such as breeding and, automation of facilities and ambience. The objective of this study was to evaluate the performance responses, liver and oviduct morphometry, and liver histology of Japanese laying quails subjected to different levels of nitrogen-corrected apparent metabolizable energy (MEn). Methods: A completely random design was used that consisted of nine levels of MEn, six replicates, and five hens per cage with a total of 270 quails. The experimental period lasted for 10 weeks. The variables of performance were subjected to analysis of variance and then regression analysis using the broken-line model. The morphometric and histological variables were subjected to multivariate exploratory techniques. Results: The MEn levels influenced the responses to zootechnical performance. The broken-line model estimated the maximum responses for feed intake, egg production, egg weight, and egg mass as 3,040, 2,820, 1,802, and 2,960 kcal of MEn per kg of diet, respectively. Multivariate analysis revealed that the occurrence of hepatic steatosis and increased levels of Kupffer cells were not related to MEn levels. Conclusion: The level of 2,960 kcal/kg of MEn meets performance variable requirements without compromising hepatic physiology.

• 한국가금학회지
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• 제17권4호
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• pp.275-280
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• 1990

Constitutive heterochromatin의 염색체 다형현상에 대해 사람을 비롯하여 돼지, 생쥐, 말, 닭 등에서 보고된 바 있다. 본 연구에서는 일본산메추리의 C－band 다형체 뿐만 아니라 염색체의 형태적 다형체를 발견하여 이의 다형현상을 밝혔다. 일반적인 염색체 분석방법 및 C－banding 방법으로서 밝힌 3가지 염색체 다형체는 4번 염색체 ＋/－ 동형체, ＋/－ 이형체 및 －/－ 동형체이다. 이와 같은 다형체들은 무작위 집단 내에서 일반적이고 지속적으로 나타나며 Mendel 법칙에 따른 유전양상을 보인다. 따라서 본 연구에서 밝힌 염색체 다형체들은 여러 세포유전학적 연구에 표식인자(chromosome marker)로서 유용하게 이용되어질 수 있을 것으로 생각된다.

• 한국가금학회지
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• 제26권2호
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• pp.81-84
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• 1999

Chicken has been one of the most useful animals for life. They have been not only one of the most economical and adundant sources of valuable nutrients, but also the very good experimental animal to develop modern sciences. In Japan, eggs laid by the chickens have long been good sources of cash income for farmers and in many cases even for Samurais. Although nearly 50 millions of chickens were raised and they were of considerable importance in Japanese agricultre before the World War II, the industrialization or specializatin started after the War, Substantiallysince the 1960s. Among other spcies of poultry then chickens, ducks and Japanese quails are of some importane in Japan. Duck meat is often used in various cuisines at higher class restaurants and Japanese quail eggs are widely used. Hower those those species of commpared with chickens.