• 한국가금학회지
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• 제10권2호
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• pp.123-128
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• 1983

본 시험에 공시된 오골계 50수는 본 대학교 가금학교실에서 부화한 것이고. 메추리 50수는 경남금해에서 부화한 것이었다. 본 시험은 부화후 24시간경에 실시하였으며, 조사항목은 12개로서 생체중, 두, 안구, 뇌, 심장, 간장, 신장, 위, 소장, 대장 및 란황낭의 중량을 측정한 종과는 다음과 같았다. 1. 메추리의 조사항목중, 생체중량은 6.54$\pm$0.082g, 두의 중량은 1.38$\pm$0.013g, 안구의 중량은 0.29$\pm$0.004g, 뇌의 중량은 0.24$\pm$0.006g, 심장의 중량은 0.08$\pm$0.002g, 간장의 중량은 0.21$\pm$0.005g, 폐의 중량은 0.06$\pm$0.002g, 신장의 중량은 0.05$\pm$0.002g, 위의 중량은 0.46$\pm$0.010g, 소장의 중량은 0.24$\pm$0.008g, 대장의 중량은 0.10$\pm$0.004g 그리고 란황낭의 중량은 0.28$\pm$0.016이었다. 2. 오골계의 조사항목중, 생체중량은 26.60$\pm$0.491g, 두의 중량은 4.28$\pm$0.071g, 안구의 중량은 0.64$\pm$0.039g, 뇌의 중량은 0.55$\pm$0.025g, 심장의 중량은 0.21$\pm$0.012g, 간장의 중량은 0.77$\pm$0.030g, 폐의 중량은 0.31$\pm$0.006g, 신장의 중량은 0.08$\pm$0.006g, 위의 중량은 1.53$\pm$0.076g, 소장의 중량은 0.73$\pm$0.036g, 대장의 중량은 0.42$\pm$0.031g 그리고 란황낭의 중량은 2.65$\pm$0.297g 이었다. 3. 메추리와 오골계의 중란중량에 대한 생체중량 및 각 장기중량의 비율을 타 실용계와 비교한 결과, 메추리의 안구중량과 뇌중량은 타 실용계와 오골계에 비하여 월등히 큰 것이었고, 오골계의 뇌의 중량, 심장의 중량, 간장의 중량, 폐장의 중량, 신장의 중량, 위의 중량 및 소장의 중량은, 타 실용계와 메추리에 비하여 적은 경향이었다는 것이 특이하였으며, 그 외의 항목간에는 대동소이하였다.

• Asian-Australasian Journal of Animal Sciences
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• 제6권3호
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• pp.339-342
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• 1993

This influence of dietary medium chain triglyceride on liver protein synthesis in chicks was investigated using a large dose injection of $L-[4-^3H]$ phenylalanine. Dietary medium chain triglyceride increased liver weight and liver fat content of chicks compared to the long chain triglyceride group. Fractional synthesis rate of liver protein was increased by dietary medium chain triglyceride, which was accounted for not by elevating protein synthesized per unit RNA but by enhancing RNA: protein ratio.

• Asian-Australasian Journal of Animal Sciences
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• 제9권4호
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• pp.465-469
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• 1996

Pathological and virological investigations were conducted on suspected outbreaks of infectious bursal disease (IBD) in a broiler farm and five pullet-raising poultry farms of Mymensingh and Tangail districts of Bangladesh. About 80 to 100 percent chicks were affected at the age of 26 to 45 days and mortality varied from 20 to 30 percent in broilers and 40 to 80 percent in layer chicks. Signs, symptoms, gross and microscopic lesions were typical of acute IBD. Several isolates of virus could be obtained by embryo inoculation and the virus was diagnosed as infectious bursal disease virus (IBDV) by agar gel immunodiffusion test (AGID). The virus isolate belonged to the very virulent pathotype of IBDV causing 100 percent mortality in three weeks old chicks on experimental infection.

• Asian-Australasian Journal of Animal Sciences
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• 제12권5호
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• pp.772-775
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• 1999

A six week growth performance trial involving 450 birds was conducted to determine the dietary requirement of broiler chicks for available methionine (AM). Body weight gain was significantly (p<0.01) lower on high AM diet (1411 g/bird) than low AM (1470 g/bird) and normal AM (1466 g/bird) diets. The feed intake by birds ranged from $3241{\pm}25.69$ in high AM diet to $3321{\pm}25.69g/bird$ in low AM diet. The feed efficiency for the three diets having low, normal and high level of AM were $2.26{\pm}0.02$, $2.24{\pm}0.02$ and $2.30{\pm}0.02$, respectively. The results indicated that the birds fed high AM diet consumed significantly (p<0.01) more feed per unit body weight gain as compared to birds on low and normal AM diets.

• Asian-Australasian Journal of Animal Sciences
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• 제14권1호
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• pp.96-100
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• 2001

Three commercial strains bred in the US (Hubbard), Holland (Lohman), and Canada (Shaver) and Balady breed of chickens were orally infected with $10^6$ cfu of Salmonella gallinarum per chick. Chicks were compared for weight gain, feed intake, feed conversion ratio, mortality rate and contamination of the liver, spleen and intestine with Salmonella gallinarum on the day of slaughter. The Balady chicks had significantly the lowest mortality rate (p<0.01) and weight gain (p<0.001) and poorest feed conversion ratio (p<0.001). Salmonella gallinarum could be shed from the liver, spleen and intestine with alternative rates in all strains. Lohman was the most resistance over the other two commercial strains, while Hubbard had the highest susceptibility. The Balady chicks were the most resistance. However, they may serve as a possible reservoir of Salmonella gallinarum and it may play a role of spreading the infection to the commercial farms in Jordan.

• Asian-Australasian Journal of Animal Sciences
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• 제11권3호
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• pp.234-238
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• 1998

Two experiments were conducted with broiler chickens to determine cage floor preferences, the strength of preference for a particular floor type and to evaluate the effect of rearing broilers on the preferred cage floor on productivity. In experiment 1, chicks when offered free access to either wire (WF) or plastic (PF) mesh flooring, preferred the former. However, when the perferred floor type (WF) was illuminated at 800 lux, birds spent longer time on PF. Also provision of incandescent lamps at PF resulted in broilers spending significantly longer period on WF. In experiment 2, while floor type had no effect on growth of female chicks throughout the duration of study, male chicks grown on PF were heavier than their WF counterparts on Days 21, 28, 35 and 42. Neither livability, nor incidence of breast blisters and leg deformities was affected by floor type.

• 한국축산시설환경학회지
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• 제2권2호
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• pp.111-116
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• 1996

An experiment was carried out to study the effect of environmental color on the eating behaviour in broiler chicks. A total of ninety broilers with average 350g of initial body weight were randomly assigned in the $3{\times}3$ randomized complete block design with 3 treatments(yellow, blue, red) and 10 birds per replication of various environmental color at walls, feeders and electric bulbs. The results obtained from these experiments are summarised as follows: 1. Feed Intake and average daily gain were significantly(P<0.05) increased by yellow colored environment. 2. Eating time and eating rate were significantly higher in the red colored than the other, indicating that yellow colored environment would maximize body weight gain and feed conversion for broiler chicks.

• Asian-Australasian Journal of Animal Sciences
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• 제9권2호
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• pp.171-174
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• 1996

Muscle protein synthesis in vitro was measured in chicks fed low-protein(10% CP) and control(20% CP) diets. Right leg muscles (M. gastrocnemius) were mounted on a support made of stainless steel to stretch in constant tension, whereas left leg muscles were unmounted. Both leg muscles were incubated in Dulbecco's modified Eagle's medium including L-[$4-^3H$] phenylalanine for 60 min to measure in vitro protein synthesis. There was no significant difference in fractional synthesis rate(FSR) of muscle protein between both dietary protein levels, whereas FSR with stretch in constant tension was significantly higher than that without constant tension due to an increase in the absolute synthesis rate(ASR) per unit RNA(the efficiency of RNA to synthesize protein). The ASR of muscle protein in chicks fed the control diet was significantly higher than that in the low-protein diet group.

• 한국가금학회지
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• 제22권1호
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• pp.43-54
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• 1995

Effects of dietary protein sources and their amino acid compositions on the liver and plasma cholesterol levels in growing Single Comb white Leghorn male chicks were studied. A diet containing isolated soy protein (21% cp) was supplemented with 0.5% DL-methionine and 0.3% L-glycine. and another diet containing casein(21% cp) was supplemented with 1.5% L-arginine HCl, 0.4% DL-methionine. and 1.0% L-glycine. Plasma cholesterol level was markedly lower in groups force-fed the diets containing either soy protein or casein supplemented with amino acids compared to those found in birds fed corresponding diets without amino acids supplementation. The cholesterol lowering effect of the casein diet. when balanced with various supplemental amino acids appeared to be due to arginine instead of methionine or glycine. It is likely that amino acid balance rather than the composition of a specific amino acid is one of the major factors determining the effect of dietary protein sources on the blood cholesterol levels in chicks.

• 한국가금학회지
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• 제40권3호
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• pp.277-281
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• 2013

The experiment was undertaken to see the effects of Bacillus sp. on the growth performance and disease resistance to Salmonella sp. infections. The use of probiotic microbes in poultry is commonly practiced. In this study, Bacillus subtilis was tested using a total of 120 chicks of age of 1 day after hatching. The growth traits examined were body weight gain and feed conversion rate. And also, the Salmonella resistance of Bacillus subtilis was tested after the chicks were orally administered with Salmonella pullorum by gavage force injections. The result showed that Bacillus subtilis yielded a high feed efficiency, consequently increased growth rate. For the effect of Bacillus subtilis on Salmonella infection, Bacillus subtilis significantly improved the resistance to Salmonella pullorum infection. Various clinical symptoms of Salmonella infection were highly decreased by addition of Bacillus sp.