Impact of oral immunoglobulins on animal health—A review     

Prabhu Balan  Kyoung Sik‐Han  Paul J Moughan 《Animal Science Journal》2019,90(9):1099-1110

Immunoglobulin (Ig) is the one of the main anti‐infective components of blood, colostrum and breast milk. It is the unique glycoprotein that defends the body from harmful bacteria, viruses and other environmental pathogens by either binding to them or by forming an encapsulating barrier. The expansion of antimicrobial and immunomodulatory products from natural sources for dietary supplementation in both animals and humans is an ever growing and thriving area of research. Purified Ig from sheep serum (ovine serum Ig) is one such candidate product. Recent work has shown the various biological effects of oral Ig in different animal models including its effect on growth, immunity, intestinal growth and gut barrier function. The objective of this paper is to review the results of recent studies demonstrating the effects of oral Ig in both pathogenic and non‐pathogenic animal models and to suggest a possible mechanism of its action. Overall, purified oral Ig improves growth of healthy (and challenged) rats and defends against enteric infection by immunomodulation, mucin protein and/or modification of commensal microbial composition. The findings contribute to knowledge of how orally administered ovine Ig can influence and enhance key indicators of gut function and overall growth performance in an animal model.  相似文献   

Oral Cobalamin Supplementation in Dogs with Chronic Enteropathies and Hypocobalaminemia          下载免费PDF全文

L. Toresson  J.M. Steiner  J.S. Suchodolski  T. Spillmann 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2016,30(1):101-107

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Characteristics of roost cavities used by Lilian's Lovebird Agapornis lilianae in Liwonde National Park,Malawi     

Tiwonge I Mzumara  Michael R Perrin 《African Zoology》2016,51(1):21-28

Lilian's Lovebird Agapornis lilianae is a non-excavating cavity user of mopane Colophospermum mopane woodlands. We investigated roost characteristics of Lilian's Lovebirds in Liwonde National Park, Malawi. We quantified tree and roost site variables for roost and non-roost trees. Sixty-six roosts were found. Roosts were in large tall mopane trees with a mean diameter at breast height (dbh) of 57.4 ± 1.64?cm, a mean height of 16.5 ± 0.42?m, and with a mean cavity entrance height of 10.0 ± 0.05?m. Non-roost areas had significantly smaller trees (mean dbh = 39.4 ± 1.72?cm). Human disturbance was low in both areas, but browsing of African elephant Loxodonta africana was evident by large areas of stunted mopane woodland recorded in non-roost areas. We recommend that the current Liwonde National Park vegetation map be updated to highlight areas of stunted mopane woodland unsuitable for Lilian's Lovebird roosts. The impact of elephant browsing on large mopane trees should be assessed to understand its impact on the availability of suitable cavities for lovebirds and other tree cavity reliant vertebrate species.  相似文献   

Oral Calcium Supplementation in Peripartum Dairy Cows     

Garrett R. Oetzel 《Veterinary Clinics of North America: Food Animal Practice》2013

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Platycodin D protects oral epithelial cells against infection of Candida albicans     

ZHU Li-fen  WANG Bing 《园艺学报》2017,33(1):161-165

AIM: To investigate the effect of platycodin D on Candida albicans infection in oral epithelial cells. METHODS: The viability of the oral squamous carcinoma KB cells was detected by MTT assay after treated with different concentrations of platycodin D. The KB cells were infected with Candida albicans, and then were incubated with platycodin D at different concentrations. Adherent numbers of the Candida albicans were counted by Gram staining, and the bacterial activity and conversion were measured by Trypan blue staining. Furthermore, the protein levels of IL-18 and human β-defensin 2 (HBD-2) were analyzed by ELISA, and the expression of HBD-2 at mRNA and protein levels was determined by RT-qPCR and Western blot, respectively. RESULTS: The viability of the KB cells was not affected by platycodin D at the concentrations used. The adherent numbers, bacterial activity and conversion were decreased by treatment with platycodin D in a dose-dependent manner. In addition, the protein level of IL-18 in the culture supernatant and the mRNA expression of HBD-2 in the KB cells were also reduced after platycodin D treatment.CONCLUSION: Platycodin D has a bacteriostasis effect and prevents oral epithelial cells from Candida albicans infection.  相似文献   

Anatomy and Disorders of the Oral Cavity of Guinea Pigs     

《Veterinary Clinics of North America: Exotic Animal Practice》2016,19(3):825-842

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大青止泻口服液对雏鸡的亚急性毒性试验     

高光平  高桂生  张艳英  汤生玲  史秋梅  梁银聚  邵欣华 《河南农业科学》2011,40(11):152-155

为了确定自拟的大青止泻口服液在雏鸡体内的亚急性毒性作用,分别以大青止泻口服液的2 mL/kg、4mL/kg、6mL/kg体质量剂量给雏鸡灌胃,对照组灌等量生理盐水,连续灌胃14d,观察和测定停药后第1天和第14天各组雏鸡的临床症状、体质量、血常规、血清生化指标,并解剖观察心、肝、脾、肺、肾的变化.结果表明,给药组的以上...  相似文献   

平面SH波入射下深埋圆形组合衬砌洞室的动力反应分析     

李刚  钟启凯  尚守平 《湖南农业大学学报(自然科学版)》2010,37(1)

利用波函数展开法,研究平面SH波入射下,深埋圆形组合衬砌洞室的动力反应问题.利用得到的级数解和数学应用软件MathCAD编写计算机程序,讨论了入射波频率、组合衬砌结构的厚度比、弹性模量、泊松比、密度等因素对围岩和衬砌结构动应力集中系数的影响.结果表明组合衬砌确实能有效地发挥围岩的自承能力,降低衬砌结构的动应力集中,且在低频入射时效果显著.  相似文献   

PVC双壁波纹排水暗管开孔率试验研究   总被引：1，自引：0，他引：1  

朱建强  欧光华 《湖北农学院学报》1999,19(2):168-170,178

采用一维渗流试验装置研究了ＰＶＣ双壁波纹管用作农田排水时的适宜开孔率，试验表明：ＰＶＣ双壁波纹管用作农田排水暗管时开孔率不必要求过高，控制在２．５％￣３．０％之间即可满足生产要求。  相似文献   

Equine Oral Endoscopy     

《Veterinary Clinics of North America: Equine Practice》2020,36(3):433-443

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