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1.
本试验旨在探究酿酒酵母(S.cerevisiae)发酵液对断奶仔猪生长性能、小肠发育及小肠黏膜免疫功能的影响。选取平均体重为(6.57±0.13)kg的26日龄"长白×杜洛克"断奶仔猪60头(公母各占1/2),按体重和性别随机分为3个组,每组4个重复,每个重复5头仔猪。3个组分别为:对照组(基础饲粮+300 m L/kg空白培养液)、酿酒酵母发酵液组(基础饲粮+300 m L/kg酿酒酵母发酵液)和抗生素组(基础饲粮+20 mg/kg硫酸黏杆菌素+40 mg/kg杆菌肽锌)。试验期21 d。结果表明:1)与对照组相比,酿酒酵母发酵液组和抗生素组的平均日增重(ADG)和平均日采食量(ADFI)显著或极显著升高(P0.05或P0.01),料重比极显著降低(P0.01);但酿酒酵母发酵液组与抗生素组的以上生长性能指标均无显著差异(P0.05)。2)与对照组相比,酿酒酵母发酵液组和抗生素组的十二指肠、空肠和回肠黏膜总蛋白、DNA和RNA含量显著或极显著升高(P0.05或P0.01);但酿酒酵母发酵液组与抗生素组的以上指标均无显著差异(P0.05)。3)与对照组相比,酿酒酵母发酵液组和抗生素组的十二指肠和回肠绒毛高度显著升高(P0.05),十二指肠、空肠和回肠绒毛高度/隐窝深度(V/C)显著或极显著升高(P0.05或P0.01);但酿酒酵母发酵液组与抗生素组的以上指标均无显著差异(P0.05)。4)与对照组相比,酿酒酵母发酵液组和抗生素组的十二指肠、空肠和回肠黏膜免疫球蛋白A、免疫球蛋白G和免疫球蛋白M含量均显著或极显著升高(除空肠黏膜免疫球蛋白G外)(P0.05或P0.01);但酿酒酵母发酵液组和抗生素组的以上指标均无显著差异(P0.05)。结果显示,饲粮中添加酿酒酵母发酵液能够提高断奶仔猪的生长性能,促进小肠发育,提高小肠黏膜免疫功能,达到与抗生素相当的效果。提示酿酒酵母发酵液可有效缓解断奶应激,减少或者替代抗生素在断奶仔猪饲粮中的使用,这为研发无抗饲粮提供了有力的理论依据和数据支持。 相似文献
2.
《黑龙江畜牧兽医》2017,(13)
为了分析日粮中添加酿酒酵母对断奶仔猪小肠黏膜消化酶及免疫基因mRNA表达水平的影响,采用实时荧光定量PCR方法,随机选择26日龄断奶仔猪60头,分为3组(即对照组、酿酒酵母组及抗生素组)进行试验,测定肠道黏膜的消化酶基因[碱性磷酸酶(ALP)、氨肽酶N(APN))]和免疫功能基因(TLR-2、IL-8和TNF-α)mRNA表达水平。结果表明:与对照组相比,日粮中添加酿酒酵母能够极显著提高断奶仔猪十二指肠免疫基因TLR-2 mRNA表达水平(P0.01);与抗生素组相比,酿酒酵母组十二指肠、空肠和回肠黏膜消化酶基因ALP和十二指肠免疫基因TLR-2、IL-8、TNF-α以及回肠免疫基因TNF-αmRNA表达水平极显著提高(P0.01)。说明酿酒酵母能抑制仔猪断奶应激引起的肠道上皮细胞免疫炎症反应。 相似文献
3.
血根碱对断奶仔猪生长性能、肠道形态结构及小肠黏膜免疫功能的影响 总被引：1，自引：0，他引：1
本试验旨在研究血根碱(SAN)对断奶仔猪生长性能、肠道形态结构及小肠黏膜免疫功能的影响。试验选取23日龄平均体重为(6.55±0.18)kg的健康"杜×长×白"三元杂交断奶仔猪36头,按体重相近、性别比例相同原则随机分为3组,分别饲喂基础饲粮(对照组)、基础饲粮+75 mg/kg金霉素(抗生素组)、基础饲粮+50 mg/kg SAN(SAN组),每组12个重复,每个重复1头猪,试验期21 d。结果表明:1)与对照组相比,SAN组和抗生素组的平均日增重和平均日采食量显著提高(P0.05),料重比和腹泻率显著降低(P0.05);但SAN组与抗生素组间以上生长性能指标均无显著性差异(P0.05)。2)与对照组相比,SAN组和抗生素组的十二指肠和空肠绒毛高度、绒毛高度/隐窝深度(V/C)值显著或极显著升高(P0.05或P0.01),但SAN组和抗生素组间以上指标均无显著差异(P0.05);而SAN组回肠绒毛高度、V/C值显著高于其他2组(P0.05)。3)与对照组相比,SAN和抗生素组的十二指肠、空肠和回肠黏膜免疫球蛋白A、免疫球蛋白G和免疫球蛋白M含量均显著或极显著升高(除十二指肠黏膜免疫球蛋白G和空肠黏膜免疫球蛋白M外)(P0.05或P0.01);但SAN组和抗生素组间以上指标均无显著差异(P0.05)。由此可见,饲粮中添加SAN可以改善肠黏膜形态,提高小肠黏膜免疫功能,从而提高断奶仔猪的生长性能,达到与添加抗生素相当的效果。 相似文献
4.
复合益生菌对早期断奶仔猪生长性能和免疫水平的影响 总被引：2，自引：1，他引：1
为研究酿酒酵母菌和枯草芽孢杆菌组成的复合益生菌对早期断奶仔猪免疫水平的影响,试验选取(杜×长×大)三元杂交断奶仔猪80头,分为试验Ⅰ、Ⅱ、Ⅲ组及对照组,每组20头,Ⅰ、Ⅱ、Ⅲ组在基础日粮中分别添加0.10%、0.20%、0.30%复合益生菌,对照组饲喂基础日粮,以期评价其生长性能、血液生化、血清细胞因子和肠道黏膜分泌性球蛋白A(SIgA)水平。结果表明,试验Ⅱ、Ⅲ组末重极显著高于试验Ⅰ组和对照组(P0.01);试验Ⅲ组平均日增重极显著高于试验Ⅰ、Ⅱ组及对照组(P0.01),试验Ⅲ组平均日采食量显著高于试验Ⅰ、Ⅱ组及对照组(P0.05),对照组、试验Ⅱ组腹泻率均极显著高于试验Ⅰ、Ⅲ组(P0.01);试验组中的乳酸脱氢酶(LDH)、谷丙转氨酶(ALT)和碱性磷酸酶(ALP)含量均高于对照组,总蛋白(TP)含量低于对照组,差异均不显著(P0.05);试验组中尿素氮(BUN)含量均显著高于对照组(P0.05),试验Ⅱ、Ⅲ组谷草转氨酶(AST)含量显著高于试验Ⅰ组和对照组(P0.05)。试验0d,试验组白细胞介素-6(IL-6)、白细胞介素-1β(IL-1β)和肿瘤坏死因子-α(TNF-α)水平与对照组相比差异不显著(P0.05);试验20d,试验Ⅱ、Ⅲ组中IL-6水平极显著高于试验Ⅰ组及对照组(P0.01),IL-1β和TNF-α水平与对照组相比差异不显著(P0.05);试验40d,试验组IL-1β水平均高于对照组(P0.05),IL-6和TNF-α水平均极显著高于对照组(P0.01)。试验组中空肠黏膜SIgA水平极显著高于对照组(P0.01);十二指肠和回肠黏膜SIgA水平均显著高于对照组(P0.05),盲肠黏膜SIgA水平低于对照组,差异不显著(P0.05)。说明不同含量酿酒酵母菌-枯草芽孢杆菌复合益生菌均可有效提高断奶仔猪的生长性能,缓解早期断奶仔猪应激反应,增强断奶仔猪的免疫功能。 相似文献
5.
本试验旨在研究在饲粮中添加益生菌和有机酸复合制剂对断奶仔猪生长性能、肠道形态及免疫指标的影响。试验选用80头28日龄、初始体重为(7.5±0.5)kg的健康"杜×长×大"三元杂交断奶仔猪,随机分为2个组,分别饲喂基础饲粮(对照组)和在基础饲粮中添加2000mg/kg益生菌和有机酸复合制剂的试验饲粮(试验组),每组5个重复,每个重复8头仔猪。正式试验期为42天。结果表明:与对照组相比,饲粮中添加益生菌和有机酸复合制剂1)可显著降低仔猪料重比(P0.05)及腹泻率(P0.05);2)极显著提高仔猪空肠绒毛高度(P0.01),显著提高十二指肠、空肠、回肠绒毛高度/隐窝深度比值(P0.05);3)极显著提高仔猪胸腺指数(P0.01),显著提高脾脏指数(P0.05)、血清IgG含量(P0.05)及回肠黏膜SIgA含量(P0.05)。结果提示,饲粮中添加益生菌和有机酸复合制剂可以改善断奶仔猪肠道黏膜形态,提高肠道功能及部分免疫指标,缓解断奶应激引起的仔猪免疫功能下降,从而降低断奶仔猪腹泻率,提高饲料转化率。 相似文献
6.
选用同一牛场的荷斯坦公犊牛25头,饲喂添加不同浓度低聚果糖(FOS)的日粮,研究其对早期断奶犊牛生长性能、血液理化指标及肠黏膜形态的影响。试验结果表明:日粮中添加FOS极显著提高犊牛的体重及日增重(P<0.01);各FOS组犊牛牛血清IgG、IgA含量肠绒毛高度、固有膜厚度、血清总蛋白、血清白蛋白显著高于对照组(P<0.05);但总胆固醇含量显著降低。说明FOS能提高犊牛的生长性能,能防止早期断奶犊牛肠道萎缩、维持肠道的正常形态结构,能影响犊牛代谢,提高犊牛免疫性能;缓解断奶对犊牛的应激。 相似文献
7.
低聚果糖对早期断奶犊牛肠黏膜和免疫指标的影响 总被引：1，自引：0，他引：1
选用同一牛场的荷斯坦公犊牛35头,研究低聚果糖(FOS)对早期断奶犊牛肠黏膜形态及免疫指标的影响。结果表明:4g/(d·头)FOS组(E组)、6g/(d·头)FOS组(F组)、常规哺乳组犊牛肠绒毛高度、固有膜厚度、小肠黏膜DNA浓度均显著高于早期断奶对照组(P<0.05);添加FOS对小肠黏膜RNA含量有增加趋势;犊牛70日龄时,E、F组IgG、IgA含量极显著高于早期断奶对照组(P<0.01),显著高于其他各组(P<0.05);早期断奶对照组IgG、IgA含量显著低于其他各组(P<0.05)。说明FOS能防止早期断奶犊牛肠道萎缩,维持肠道的正常形态结构,提高犊牛免疫性能。 相似文献
8.
《动物营养学报》2021,33(3)
本试验旨在研究酵母多糖对断奶仔猪生长性能、肠道形态、抗氧化能力和肠道免疫状态的影响。试验选取体重[(6.89±0.88) kg]相近、健康状况良好的21日龄长×大×杜杂交阉公断奶仔猪32头,随机分为4个组,每组8个重复,每个重复1头猪。对照组饲喂基础饲粮,试验组分别饲喂在基础饲粮中添加0.1%酵母多糖(0.1%酵母多糖组)、0.2%酵母多糖(0.2%酵母多糖组)、55 mg/kg吉他霉素和20 mg/kg硫酸黏菌素(抗生素组)的试验饲粮。预试期3 d,正试期28 d。结果表明:与对照组相比,1)饲粮中添加0.1%酵母多糖可显著增加断奶仔猪的平均日增重和平均日采食量(P0.05),显著降低盲肠内容物pH(P0.05);添加0.1%和0.2%酵母多糖和抗生素可显著降低料重比(P0.05);2)饲粮中添加0.1%和0.2%酵母多糖有增加断奶仔猪空肠绒毛高度的趋势(0.05P0.10),添加0.1%酵母多糖和抗生素可显著增加回肠上皮内淋巴细胞数量(P0.05);3)饲粮中添加0.2%酵母多糖和抗生素可显著降低断奶仔猪的十二指肠黏膜超氧化物歧化酶(SOD)活性(P0.05),添加0.1%、0.2%酵母多糖和抗生素可显著降低空肠黏膜SOD活性(P0.05);4)0.2%酵母多糖组断奶仔猪的十二指肠黏膜白细胞介素-6(IL-6)的mRNA表达量显著降低(P0.05),回肠黏膜白细胞介素-10(IL-10)的mRNA表达量显著提高(P0.05);0.1%、0.2%酵母多糖组和抗生素组的空肠黏膜肿瘤坏死因子-α(TNF-α)的mRNA表达量有降低趋势(0.05P0.10)。综上所述,酵母多糖可提高断奶仔猪的生长性能,降低盲肠pH,改善肠道形态并降低肠道炎症。在本试验条件下,仔猪饲粮中酵母多糖的适宜添加水平为0.1%。 相似文献
9.
《动物营养学报》2020,(1)
本试验旨在研究酿酒酵母培养物替代抗生素对断奶仔猪生长性能、养分消化率以及盲肠微生物区系的影响。试验选用体重相近的28日龄断奶仔猪180头,随机分成3组,每组4个重复,每个重复15头仔猪。对照组饲喂基础饲粮,抗生素组在基础饲粮的基础上添加75 g/t金霉素+50 g/t吉他霉素+10 g/t维吉尼亚霉素,酿酒酵母培养物组在基础饲粮的基础上添加5 kg/t的酿酒酵母培养物。试验期38 d。结果显示:1)酿酒酵母培养物组断奶仔猪平均日增重显著高于对照组(P0.05),料重比显著低于对照组(P0.05),且与抗生素组相比没有显著性差异(P0.05)。2)酿酒酵母培养物组的粗蛋白质、粗脂肪和磷的表观消化率均显著高于对照组(P0.05),且与抗生素组相比没有显著性差异(P0.05)。3)与对照组相比,饲粮添加酿酒酵母培养物和抗生素对断奶仔猪盲肠微生物多样性均没有显著性影响(P0.05),但是均可以影响断奶仔猪盲肠微生物的菌群丰度。其中,对照组瘤胃球菌科UCG-005(Ruminococcaceae UCG-005)的相对丰度显著高于抗生素组和酿酒酵母培养物组(P0.05)。而与对照组相比,饲粮添加酿酒酵母培养物显著降低了螺旋体门(Spirochaeates)的相对丰度(P0.05),而饲粮添加酿酒酵母培养物和抗生素均显著降低了克里斯滕森菌科R-7群(Christensenellaceae R-7 group)、大肠埃希菌-志贺菌属(Escherichia-Shigella)和密螺旋体属2(Treponema 2)的相对丰度(P0.05),饲粮添加酿酒酵母培养物组有提高普雷沃氏菌属2(Prevotella 2)(P=0.064)、普雷沃氏菌属7(Prevotella 7)(P=0.058)以及普雷沃氏菌属9(Prevotella 9)(P=0.072)相对丰度的趋势。与抗生素组相比,饲粮添加酿酒酵母培养物有提高普雷沃氏菌属7相对丰度的趋势(P=0.072)。与抗生素组和对照组相比,酿酒酵母培养物组四大主菌门的总相对丰度显著提高(P0.05)。综上所述,饲粮添加酿酒酵母培养物能够提高断奶仔猪的生长性能,降低腹泻率,提高养分消化率,改善盲肠微生物的菌群丰度,降低肠道致病菌的丰度,达到与添加抗生素相似的饲喂效果。 相似文献
10.
《畜牧与兽医》2016,(2):1-6
为了调查酿酒酵母及Etp A酿酒酵母基因工程菌对大鼠小肠黏膜生长发育状况的影响,120只健康断奶SD大鼠,随机分为空白对照组、酿酒酵母菌组、Etp A酿酒酵母基因工程菌组,分别灌胃生理盐水、酿酒酵母菌液、Etp A酿酒酵母基因工程菌液2 m L/只,持续28 d后连续3 d灌胃大肠杆菌菌液。分别取7、14、21和28 d及灌胃大肠杆菌后大鼠的十二指肠、空肠、回肠制作石蜡切片,HE染色,显微镜下观察,记录各段小肠绒毛的宽度、长度、隐窝深度及绒毛长度/隐窝深度比值(V/C)。结果显示:1)与空白对照组相比,酿酒酵母菌组及Etp A酿酒酵母基因工程菌组的十二指肠绒毛长度、V/C在第21和28天时均显著升高(P0.05);空肠绒毛长度、V/C在第28天均极显著升高(P0.01)同时隐窝深度显著下降(P0.05);回肠V/C在第28天显著升高(P0.05);各肠段绒毛宽度均无显著差异(P0.05)。2)灌胃大肠杆菌后,与Etp A酿酒酵母基因工程菌组相比,空白对照组及酿酒酵母菌组的空肠绒毛长度、V/C均极显著下降(P0.01);回肠V/C均显著下降(P0.05)。结果表明:酿酒酵母和Etp A酿酒酵母基因工程菌均可以促进肠道黏膜发育,提高消化吸收能力;Etp A酿酒酵母基因工程菌对肠道黏膜的保护作用更显著。 相似文献
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Nadine Pa?lack Barbara Mainzer Monika Lahrssen-Wiederholt Helmut Schafft Richard Palavinskas Angele Breithaupt Jürgen Zentek 《Journal of veterinary science (Suw?n-si, Korea)》2015,16(1):57-66
This study was conducted to measure the concentrations of strontium (Sr), barium (Ba), cadmium (Cd), copper (Cu), zinc (Zn), manganese (Mn), chromium (Cr), antimony (Sb), selenium (Se), and lead (Pb) in canine liver, renal cortex, and renal medulla, and the association of these concentrations with age, gender, and occurrence of chronic kidney disease (CKD). Tissues from 50 dogs were analyzed using inductively coupled plasma mass spectrometry. Cu, Zn, and Mn levels were highest in the liver followed by the renal cortex and renal medulla. The highest Sr, Cd, and Se concentrations were measured in the renal cortex while lower levels were found in the renal medulla and liver. Female dogs had higher tissue concentrations of Sr (liver and renal medulla), Cd (liver), Zn (liver and renal cortex), Cr (liver, renal cortex, and renal medulla), and Pb (liver) than male animals. Except for Mn and Sb, age-dependent variations were observed for all element concentrations in the canine tissues. Hepatic Cd and Cr concentrations were higher in dogs with CKD. In conclusion, the present results provide new knowledge about the storage of specific elements in canine liver and kidneys, and can be considered important reference data for diagnostic methods and further investigations. 相似文献
13.
Breed differences for weight (CW), height (CH), and condition score (CS) were estimated from records (n = 12,188) of 2- to 6-yr-old cows (n = 744) from Cycle IV of the U.S. Meat Animal Research Center's Germplasm Evaluation (GPE) Program. Cows were produced from mating Angus and Hereford dams to Angus, Hereford, Charolais, Shorthorn, Galloway, Longhorn, Nellore, Piedmontese, and Salers sires. Samples of Angus and Hereford sires were 1) reference sires born from 1962 through 1970 and 2) 1980s sires born in 1980 through 1987. The mixed model included cow age, season of measurement and their interactions, year of birth, pregnancy-lactation code (PL), and breedgroup as fixed effects for CW and CS. Analyses of weight adjusted for condition score included CS as a linear covariate. The model for CH excluded PL. Random effects were additive genetic and permanent environmental effects associated with the cow. Differences among breed groups were significant (P < 0.05) for all traits and were maintained through maturity with few interchanges in ranking. The order of F1 cows for weight was as follows: Charolais (506 to 635 kg for different ages), Shorthorn and Salers, reciprocal Hereford-Angus (HA) with 1980s sires, Nellore, HA with reference sires, Galloway, Piedmontese, and Longhorn (412 to 525 kg for different ages). Order for height was as follows: Nellore (136 to 140 cm), Charolais, Shorthorn, Salers, HA with 1980s sires, Piedmontese, Longhorn, Galloway and HA with reference sires (126 to 128 cm). Hereford and Angus cows with reference sires were generally lighter than those with 1980s sires. In general, breed differences for height followed those for weight except that F1 Nellore cows were tallest, which may in part be due to Bos taurus-Bos indicus heterosis for size. 相似文献
14.
In experiment 1, 6 pregnant mares received a concentrate that contained a trace mineral premix that provided 14.3 mg Cu, 40 mg Zn, 28 mg Fe, 28 mg Mn, 0.08 mg Co, 0.16 mg I, and 0.16 mg Se/kg concentrate (group A). Seven mares received the same concentrate plus 502 mg Zn and 127 mg Cu once daily (group B). No differences (P > .05) in foal growth data, or Cu, Zn, and Fe concentrations of mare milk, mare serum, or foal serum were observed. In experiment 2, 6 pregnant mares received the same concentrate as group A (group C), and 8 mares received the same concentrate fortified with 4× the trace mineral premix (group D). Group C mares had higher serum Zn concentration at 1 day (P < 0.01) and 56 days (P < 0.04). Group C mares had higher milk Fe concentration at 28 days (P < .01), and group D mares had higher milk Cu concentration at 56 days (P < .01). Group C foals had higher serum Cu concentration at 14 days (P < .03). The results from this study provide no evidence to indicate that supplementing late gestating and lactating mares with higher dietary trace mineral levels than those recommended currently by NRC has any influence on foal growth and development, or on the Cu, Zn, and Fe concentrations of the mare milk, mare serum, or foal serum. 相似文献
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《饲料工业》2019,(18):54-58
应用电感耦合等离子-质谱技术(ICP-MS),建立饲料中钠、镁、铬、锰、铁、铜、锌、砷、硒、镉和铅等元素的测定方法。对饲料样品的前处理方法、仪器工作参数和11种元素标准曲线进行优化;并以加标回收、分析方法比对和重复测试说明方法的准确性和精密性。方法在0～1 000 ng/ml范围内线性良好,仪器检出限为0.557 7～5.072 ng/ml,具有良好的精密度,其回收率在88.1%～104.4%之间,相对标准偏差小于5.0%。同时与原子吸收和原子荧光方法进行比对,测定结果相近。所建立的方法简单、快速,可替代原子吸收和原子荧光方法测定饲料中的11种金属元素,为饲料的质量控制提供理想的元素分析方法。 相似文献
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K Reifenberg M Stahl U L?sch 《Zentralblatt für Veterin?rmedizin. Reihe B. Journal of veterinary medicine. Series B》1989,36(3):191-198
A simple two step procedure for the isolation of caprine, ovine, bovine, equine, canine, porcine and human peripheral blood granulocytes is described. After enrichment of granulocytes by centrifugation, contaminating erythrocytes are lysed hypotonically. Recovery, purity, and viability of the granulocyte suspensions are determined. FACScan analysis of the cell suspensions measuring cellular size by forward and sideward light scatter is compared with the corresponding analysis of whole blood leukocytes. Constituencies of the isolated cell suspensions and loss of granulocyte subpopulations through isolation procedure is discussed with regard to granulocyte function assays. 相似文献
18.
《The Journal of Applied Poultry Research》2017,26(2):295-306
The present context investigated the comparative study on the supplementation of antibiotic, probiotic, organic acid, vitamin C, and herbal extract after vaccination into drinking water and their effects on performance, carcass quality, blood biochemical parameters, immune system, and intestinal flora in broiler chicks for 42 days. A total of 420 one-day-old male broiler chicks (Ross 308) were randomly assigned into 7 treatments with 3 replicates (pens) per treatment and 20 male chicks for each replicate (pen). The experimental treatments consisted of drinking water (control, without additive); drinking water + antibiotic sulfamet; drinking water + C-Vet-50; drinking water + antibiotic sulfamet + C-Vet-50; drinking water + probiotic Primalac; drinking water + butyric acid; and drinking water + extract of Echinacea purpurea Moench (coneflower). There were no differences observed among the treatments for feed intake, but during the whole experimental period, the highest body weight gain was found in the chicks fed with drinking water + antibiotic sulfamet + 50 cc vitamin C (P < 0.05). There were no differences (P > 0.05) observed among the treatments for feed conversion ratio (P > 0.05). Moreover, there were no differences reported among treatments for carcass characteristics at the end of the experiment. Among the treatments, drinking water + 50 cc vitamin C, and drinking water + extract of E. purpurea reduced (P < 0.05) the levels of cholesterol, triglycerides, and low-density lipoproteins. Drinking water + 50 cc vitamin C, drinking water + Primalac, and drinking water + extract of E. purpurea increased (P < 0.05) the lymphocytes count and decreased the heterophils count and heterophil:lymphocyte ratio. The highest Escherichia coli count and lowest Lactobacillus count in ileal content of the broilers were observed in the control group (P < 0.05). The additives used in this study may be incorporated in the drinking water of broiler chickens as growth promoters and for improved performance. A further, wider supplementation study is required to understand the performance, immune system, variation in the intestinal microbial counts, and any other possible alteration in the intestinal biota of the broilers. 相似文献
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《The Journal of small animal practice》1975,16(1-12):143-154
Circular excised skin wounds in the thoracic and metatarsal regions of the dog were studied. A similar sequence of events took place in the two regions although differences did occur due to the different reactions of the tissues which surrounded the wounds. None of the wound cavities became filled with exudate during the early stages of healing. In the thoracic wounds the cavities were largely filled by the swelling and inward movement of adipose tissue. Epithelium first grew on the wound surface in the sector of the wound that was situated in the direction of hair flow. The average time to complete epithelization was similar in both sets of wounds. A zone of alopecia developed around the wounds. 相似文献