• 대한수의학회지
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• 제38권2호
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• pp.258-264
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• 1998

The morphological development of uterus in 60-, 90-, 120-day-old fetuses at gestation and neonates of Korean native goats were investigated by light microscopy. 1. In the 60-day-old fetuses, uterine walls differentiated and divided into the endometrium, myometrium and perimetrium. 2. In the 90-day-old fetuses, the blood vessels appeared in the uterine walls, in the 120-day-old fetuses the nodules (primordial caruncles) appeared first in the endometrium. 3. In the 120-day-old fetuses, the gland primordia observed on the uterine epithelium. In the neonates, the developing uterine glands were more number and deeper than those of 120-old fetuses. 4. PAS reaction of the mucosa cells in the endometrium was reacted weak, moderate and strong at 90-, 120-day-old fetuses and neonates, respectively.

• 대한수의학회지
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• 제34권4호
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• pp.679-686
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• 1994

The development of esophagus in fetuses between 60, 90, 120 days of gestation and neonates of Korean native goats was investigated by light, scanning electron microscopy. The results were summarized as follows; 1. The esophageal wall appeared to be differentiated into the epithelium, lamina propria, tunica muscularis and tunica adventitia at 60 days of gestation. The esophageal epithelium was stratified cuboidal at 60 days, being transformed into stratified squamous epithelium at 90 days, and completely transformed into squamous epithelium an 120 days. 2. In scanning electron microscopy, the longitudinal furrows and ridges appeared on the epithelium of the esophagus of the fetuses at 60 days of gestation. The longitudinal furrow became deeper and microplicae appeared in 90-day-old fetuses. The transverse and longitudinal folds appeared on the epithelial surface of esophagus and the esophageal epithelium started to be keratinized in the neonates.

• 한국동물위생학회지
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• 제44권4호
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• pp.321-326
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• 2021

The study characterized Trueperella pyogenes (T. pyogenes) from caseous lymphadenitis (CLA) in Korean native goats (KNG). CLA samples (n=191) were obtained from abattoir-slaughtered KNG. Pus were obtained and Corynebacterium pseudotuberculosis was detected by PCR using PLD gene. Three PLD-negative samples (1.57%) from supramammary lymph node were subjected to bacterial culture. Isolates were identified using 16S rRNA and biochemically characterized by APIZYM. Phylogenetic and biochemical analyses identified the isolates as T. pyogenes, and have shown separate clusters and varied enzyme reaction, suggesting genotypic and phenotypic diversity. This first report of T. pyogenes-induced CLA in KNG provided information for further investigations.

• 농업과학연구
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• 제38권3호
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• pp.445-452
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• 2011

The object of this experiment was to investigate the food habits of Korean native goats fed with various roughage sources. The experimental trials were conducted at Unbong Animal Genetic Resources Station in 2008. The experimental roughages include five sources and 25 species in all; grasses and legumes: 5 species (mixed grasses, orchardgrass, tall fescue, alfalfa, white clover), native grasses and weeds: 5 species (mixed native grasses, Miscanthus sinensis Anderss, Arundinella hirta (Thunb.) Tanaka, Barnyard grass, short awn, forage crops and straw: 5 species (barley + hairy vetch, wheat + hairy vetch, rye silage, barley silage, baled rice straw), browse and fallen leaves: 5 species (Mixed browse, Oriental white oak, Quercus serrta Thunb., Oriental cherry fallen leaves, Japanese chestnut fallen leaves), and imported hay and straw: 5 species(timothy hay, tall fescue straw, annual ryegrass straw, klinegrass hay, alfalfa hay). Ten Korean native goats were selected which had nearly the same body weight (average $24{\pm}2.8$ kg). The chemical composition and dry matter digestibility of each roughage source and species were significantly different at the sampling area, plant species, growth stages and cutting period (p<0.05). Among all the 25 species of roughages, the favorite intake species order by Korean native goat was observed like this: Quercus aliena, Querancas serrta Thunb and Mixed browse, which was a lower intake compared to other domestic herbivores. The Korean native goats ate more roughages which had low fibrous contents, but high dry matter digestibility. The Korean native goats ate more roughages which had low fibrous contents, but high dry matter digestibility. On the other hand, compared to each roughage source, total intake amount by Korean native goats was showed as browse and fallen leaves (33.1%) among trials roughage sources. Based on these results, the food habit of Korean native goats seems to be closer to the browser.

• 농업과학연구
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• 제8권1호
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• pp.44-50
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• 1981

한국재래산양(韓國在來山羊)에 대(對)한 단백질(蛋白質)의 요구량(要求量)을 구명(究明)하기 위(爲)하여 생체종별(生體種別)로 단백질(蛋白質)의 급여수준(給與水準)에 차이(差異)를 두고 질소(窒素)의 축적율(蓄積率)을 측정(測定)하였고 혈청(血淸)의 단백질(蛋白質) 및 요소(尿素)의 함량(含量)을 조사(調査) 분석(分析)한 결과(結果)는 다음과 같다. l. 생후(生後) 8개월령(個月令)의 생체중(生體重) 14kg의 빈산양(牝山羊)에 대(對)하여 무단백질사료(無蛋白質飼料)를 급여(給與)하여 측정(測定)한 내인성요질소량(內因性尿窒素量)은 1일(日) 평균(平均) 1.29g이었으며, 내인성(內因性) 분질소량(糞窒素量)은 1.27g이었다. 따라서 1일(日) 최소(最少) 단백질(蛋白質) 요구량(要求量)은 22g이다. 2. 기온(氣溫)이 영하(零下) $10^{\circ}C$이하(以下)로 하강(下降)할때는 단백질수준(蛋白質水準)을 20%로 급여(給與)하여도 질소축적율(窒素蓄積率)이 부(負)를 나타내므로 energy의 소모량(消耗量)이 많은 것으로 추측(推測)된다. 3. 생체중(生體重) 20kg의 임신(姙娠)한 빈산양(牝山羊)의 질소(窒素) 축적율(蓄積率)은 17~20%로서 성장중(成長中)인 산양(山羊)에 비(比)하여 낮았다. 4. 혈청(血淸)의 단백질(蛋白質) 및 요소함량(尿素含量)은 단백질(蛋白質) 급여수준(給與水準)의 저하(低下)에 따라서 현저(顯著)하게 저하(低下)되었다.

• 한국축산식품학회지
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• 제43권4호
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• pp.639-658
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• 2023

Although goat meat has several health benefits than other red meats but comsumers reluctant it due to its unpleasant flavor. This study aimed to investigate the odorant of goat meat as well as compare the quality traits of meat regarding sex status. The loin meats [non-castrated male (NCM), castrated male (CM), and female (FM)] were collected and stored at 4℃ in a laboratory refrigerator and analyzed on the 1^st, 5^th, and 8^th consecutive days. The moisture content was the lowest and the protein content was highest in FM (p<0.05). Fat and ash content in NCM and FM were similar while lowest in CM. The CIE L^* was significantly higher in NCM, but there were no significant differences of CIE a^* and CIE b^* within groups at initial day. The color intensity increased on the 5^th storage day and decreased again after the 8^th storage day, except in NCM. NCM displayed the highest thiobarbituric acid reactive substances value (p<0.05), whereas CM displayed a higher pH value than other groups throughout the storage period. Indole levels were the highest in NCM (0.031 mg/kg); however, skatole levels were not significant differences across all treatments (p>0.05). No significant difference was observed in the fatty acid composition between NCM and CM (p>0.05), whereas a significant difference was observed in FM (p<0.05). Most of the water-soluble metabolites showed significant differences between sexes. Overall, sex status effects on quality properties of meat and castration can improve the overall sensory acceptance by reducing goaty flavor of Korean native black goat meat.

• 대한수의학회지
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• 제37권2호
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• pp.235-244
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• 1997

The present study was performed to investigate the patterns of appearance of lectin in trachea of fetuses of 60, 90 and 120 days old and neonates of Korean native goat. Carbohydrate markers were used in histochemistry for the determination of the lectin by staining of avidin-biotin-peroxidase complex(ABC), and the markers consisted of biotin-labeled concanavalin A(Con A), dolichos biflorus agglutinin(DBA), rincinus communis agglutinin(RCA-I), ulexeuropalus communis agglutinin(UEA) and wheat germ agglutinin(WGA). 1. The Con A-binding reactions appeared moderately on the apical surface of the tracheal epithelia in 60 days old fetuses, and the reactions were similar on the tracheal epithelia and glands in 90 and 120 days old fetuses and neonates. 2. Reaction of the DBA appeared as the strongest meanwhile the DBA-binding reactions were determined strongly on the apical surface of the tracheal epithelia in the 60 days old fetuses. Reaction for the DBA on the tracheal epithelia and glands of 90 and 120 days old fetuses and neonates were in same manner. 3. The RCA-I-binding reactions appeared very strongly on the apical surface of the tracheal epithelia in 60 and 90 days old fetuses. Reaction to the RCA-1 appeared moderately on certain apical surface of tracheal epithelia and glands in 120 days old fetuses and neonates. 4. No reactions provoked for the UEA in trachea of 60 days old fetuses and neonates, but the UEA-binding reactions appeared moderately in the tracheal epithelia of 90 days old fetuses and weakly in 120 days old fetuses. 5. The WGA-binding reactions appeared very strongly on the apical surface of the tracheal epithelia in 60 and 90 days old fetuses, and moreover, the reactions were determined on the luminal surface of the tracheal gland in 90 days old fetuses. On the other hand, goblet cells of the tracheal epithelia and glands in neonates reacted moderately to the WGA.

• 대한수의학회지
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• 제40권3호
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• pp.439-450
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• 2000

The morphological development of lingual papillae in fetuses between 60, 90, 120 days gestation and neonates of Korean native goat were investigated by scanning electron microscopy. In 60 day old fetuses, the primordia of lingual papillae were observed on the dorsal surface epithelium and those of papillae were primordial fungiform, vallate and conical papillae. The many of microridges and microplicae were observed on the surface of those epithelial cells. In 90 day old fetuses, the rudiment of lentiform and filiform papillae were appeared. There were microplicaes on the surface of the conical papillae epithelium. In the 120 day old fetuses, the lingual papillaes were well developed. The taste bud were opened on the top of vallate papillae that were compactly many of short microvilli. Moreover, secondary papillae partially were observed on top of vallate papillae. In neonate, the fungiform, vallate and lentiform papillae were similar to the adult lingual papillae, but filiform and conical papillae were different from the mature lingual papillae. The outline of filiform papillae were irregularly in indented, but those of conical papillae were regularly. The diameters of filiform, fungiform, conical, vallate and lentiform papillae were about 80~100, 190~250, 230~470, 360~670 and $730{\sim}1,140{\mu}m$, respectively. The height of filiform and conical papillae were about $130{\sim}140{\mu}m$ and $145{\sim}250{\mu}m$.

• 대한수의학회지
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• 제42권4호
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• pp.443-449
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• 2002

The morphological studies on the rectal development in the 60-, 90- and 120-day-old fetuses and neonates of Korean native goats were investigated by light microscopy and scanning electron microscopy. The rectal wall appeared to be differentiated into the epithelium, lamina propria, tunica muscularis and serosa in 60-day-old fetus. The rectal epithelia were stratified in some areas and simple columnar in others at 60- and 90-day-old fetuses but was only observed simple columnar epithelium at 120-day-old fetus. The goblet cells and the intestinal glands appeared in the rectal mucosa at 90-day-old fetus and gradually increase in number during gestation period. The rectal villi appeared at 60-day-old fetus and increased in length and width until 90-day-old fetus but the villi appeared to be shorter and degenerated after 120-day-old fetus. Only the rudiment trace of the villi remained at birth. The tunica muscularis of the rectum were continuously developed during gestation period. The inner circular and outer longitudinal muscle layers of rectum were observed in the 120-day-old fetuses. Under scanning electron microsoopy, the rectal villi appeared at 60-day-old fetus. The pentagonal/hexagonal microridges and numerous microvilli were observed on the luminal surface of rectal wall. Low and thumb-like rectal villi were developed at 90-day-old fetus. The rectal villi became degenerated after 120-day-old fetus. Only the rudiment of villi was remained at birth. Many circular folds were well developed. Opening portions of intestinal glands appeared like slot.

• 한국가축번식학회지
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• 제22권1호
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• pp.19-27
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• 1998

The present study was performed to investigate the patterns of a, pp.arance of lectin in uterus of fetuses of 90 and 120 days old and neonates of Korean native goat. The carbohydrate markers were used in histochemistry for the determination of the lectin by staining of avidin-biotin-per-oxidase complex(ABC), rincinus communis agglutinin(RCA-I), ulexeuropalus communis agglutinin(UEA) and wheat germ agglutinin(WGA). 1. The effects of this study were as follows; 1. The binding reactions for Con-A were weak on the mucosal epithelium of endometrium in 90 and 120 days old fetuses, and neonates and moderate at the free surface of mucosal epithelia. 2. The binding reactions for DBA was partially moderate on the mucosal epithelium of endometrium and partially strong at the free surface of mucosal epithelia in 120 days old fetuses. In neonates, the reactions were strong on the mucosal epithelium and gland primordium of endometrium, and the secretions at the free surface showed strong reactions for DBA. But, in 90 days old fetuses, the reaction was negative. 3. The binding reactions for RCA-I were moderate on the mucosal epithelium of endometrium and at the free surface of mucosal epithelia in 90 days old fetuses. In 120 days old fetuses, the reactions were weak on the mucosal epithelium of endometrium and moderate at the free surface of mucosal epithelia. In neonates, the reactions were moderate on the mucosal epithelium of endometrium and strong at the free surface of mucosal epithelia and also strong in the uterine gland. 4. The binding reactions for UEA were negative in 90 and 120 days old fetuses and neonates. 5. In 90 days old fetuses, the binding reactions for WGA were generally weak on the mucosal epithelium of endometrium, but several epithelial cells showed moderate reaction for WGA. In 120 days old fetuses and neonates, the reactions were moderate on the mucosal epithelium and blood vessels of endometrium and strong at the free surface of mucosal epithelia.