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Evaluation of the sleep modulating effects of methanolic extracts of Strychnos spinosa and Strychnos innocua fruits in mice 马钱子和马钱子果实甲醇提取物对小鼠睡眠调节作用的评价
Pub Date : 2022-08-04 DOI: 10.4314/sokjvs.v20i5.10
M. Sani, F. Khan, D. Sani, MM Sulaiman, E. Nwasor, A. Hassan
This study aimed to evaluate the sleep modulating properties of Strychnos spinosa and Strychnos innocua fruits in Swiss albino mice. The depressant effect of the extracts on the central nervous system was studied using a diazepam-induced sleep model in mice. The mice were divided into four groups of six mice each. The test groups received Strychnos spinosa and Strychnos innocua fruits extracts at the doses of 250, 500, and 1000 mg/kg body weight intraperitoneally. In contrast, the control group received distilled water at 10 ml/kg. Diazepam (Ranbaxy®, India) was used as a standard drug and administered 30 minutes after the initial treatment. The lethal doses (LD50) of the two extracts were estimated to be >5000 mg/kg. The results obtained from the onset of sleep of rats administered methanol extracts of Strychnos spinosa, and Strychnos innocua fruits showed that the extracts at 250, 500, and 1000 mg/kg, respectively, did not significantly (p >0.05) alter the onset of sleep when compared with the control. The onset of sleep in the groups treated with Strychnos spinosa fruit extracts indicated a dose-dependent decrease pattern. The study also revealed a prolonged duration of sleep in all the experimental groups treated with the two extracts compared to the control group. The treated groups of 250, 500 and 1000 mg/kg significantly (p <0.05) prolonged the duration of diazepam-induced sleep in a dose-dependent manner when compared to the control group. The group treated with 1000 mg/kg of Strychnos innocua fruit extract was significant (p <0.05) compared to the control group. In conclusion, the high LD50 observed in this study suggests that the two extracts are relatively safe and contain promising bioactive ingredients that cause sleep modulation in mice.
本研究旨在评价马钱子果和马钱子果对瑞士白化小鼠的睡眠调节作用。采用地西泮诱导小鼠睡眠模型,研究其提取物对中枢神经系统的抑制作用。这些老鼠被分成四组,每组6只。试验组分别以250、500、1000 mg/kg体重腹腔注射马钱子提取物和马钱子果实提取物。对照组给予蒸馏水10 ml/kg。地西泮(Ranbaxy®,印度)作为标准药物,在初始治疗后30分钟给药。两种提取物的致死剂量(LD50)均大于5000mg /kg。马钱子甲醇提取物和马钱子果实甲醇提取物对大鼠睡眠的影响结果表明,与对照组相比,分别给药250、500和1000 mg/kg的马钱子甲醇提取物对大鼠睡眠的影响不显著(p >0.05)。用马钱子果实提取物治疗的组的睡眠开始显示出剂量依赖性的减少模式。研究还显示,与对照组相比,接受这两种提取物治疗的所有实验组的睡眠时间都更长。250mg /kg、500mg /kg和1000mg /kg组与对照组相比,地西泮诱导睡眠时间显著延长(p <0.05),且呈剂量依赖性。1000 mg/kg马钱子提取物处理组与对照组相比差异显著(p <0.05)。总之,本研究中观察到的高LD50表明这两种提取物是相对安全的,并且含有有希望的生物活性成分,可以调节小鼠的睡眠。
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引用次数: 0
Effects of Cellgevity® on the milt quality of catfish,Clarias gariepinus extended in sodium citrate during chilled storage cellgity®对鲶鱼(Clarias gariepinus)冷藏期间在柠檬酸钠中的发酵品质的影响
Pub Date : 2022-08-04 DOI: 10.4314/sokjvs.v20i5.12
JS Bugau, S. Lanko, D. Ogwu, P. Rekwot, M. Shinkut, J.I Itodo
Cellgevity® is a supplement reported to comprise mostly D-Ribose and L-Cysteine enriched glutathione, known to be an effective antioxidant that improves spermatozoa quality. However, its effect on milt characteristics has not been reported. This study, therefore, aimed to evaluate the effects of Cellgevity® on the milt quality of catfish (Clarias gariepinus) extended in sodium citrate during chilled storage. Pooled milt sample from three fishes was divided into three groups (T1, T2 and T3). The milt was extended in sodium citrate, and each group in triplicate was supplemented with Cellgevity® at 0 mg (T1), 125 mg (T2) and 250 mg (T3). The spermatozoa motility, concentration, viability and morphology were evaluated on days 0, 1, 2, 3, 4 and 5 of chilled storage. Data were expressed as mean ± standard deviation (SD) and analysed with a one-way analysis of variance (ANOVA) followed by Dunnett's multiple comparison test. Mean ± SD spermatozoa motility was significantly (P < 0.001) lower in T2 and T3 than T1 before and during the first 3-days storage period. Mean ± (SD) spermatozoa concentration was significantly (P < 0.001) higher in T2 and T3 than T1 before and throughout the 5-days storage period. Mean ± SD live spermatozoa were significantly (P < 0.001) lower in T3 than T1 at day 2 of the storage. Mean ± SD total abnormal spermatozoa did not differ significantly (P > 0.05) among the groups before and throughout the 5-days storage period. It was concluded that although supplementation of Cellgevity® at 125 mg and 250 mg in milt of catfish, extended in sodium citrate in chilled storage maintained the sperm cells alive and motile up to four days of the storage. However, it did not improve the milt quality. Hence, it should not be supplemented in sodium citrate extended milt of catfish, Clarias gariepinus in chilled storage.
Cellgevity®是一种补充剂,据报道主要包括d -核糖和l -半胱氨酸丰富的谷胱甘肽,已知是一种有效的抗氧化剂,可提高精子质量。然而,其对milt特性的影响尚未报道。因此,本研究旨在评估Cellgevity®对柠檬酸钠冷藏期间鲶鱼(Clarias gariepinus)肉质的影响。将3只鱼的混合乳样分为3组(T1、T2和T3)。在柠檬酸钠的基础上延长试验期,每组添加0 mg (T1)、125 mg (T2)和250 mg (T3)的Cellgevity®,每组3个重复。分别于冷藏第0、1、2、3、4、5天对精子活力、浓度、活力和形态进行评价。数据以均数±标准差(SD)表示,采用单因素方差分析(ANOVA)和Dunnett多重比较检验进行分析。在贮藏前和贮藏前3 d, T2和T3的精子活力均值±SD显著低于T1 (P < 0.001)。T2和T3的精子平均±(SD)浓度显著(P < 0.001)高于贮藏前和贮藏期间的T1。储存第2天,T3的活精子均值±SD显著低于T1 (P < 0.001)。5 d贮藏前和贮藏期内各组异常精子总数平均值±SD无显著差异(P > 0.05)。结果表明,尽管在鲶鱼乳中添加125 mg和250 mg的Cellgevity®,但在冷冻储存中添加柠檬酸钠可使精子细胞存活和运动长达4天。然而,它并没有改善磨粉质量。因此,枸橼酸钠不宜在冷藏鲶鱼(Clarias gariepinus)中添加。
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引用次数: 0
Anti-oxidative influence of butylated hydroxytoluene on chilled semen of Red Sokoto bucks and consequential conception rates in does 丁基羟基甲苯对雄鹿冷冻精液的抗氧化作用及受孕率的影响
Pub Date : 2022-08-04 DOI: 10.4314/sokjvs.v20i5.9
T. Bello, P. Rekwot, J. Ayo, AM Khumran, BB Oyelowo
The anti-oxidative influence of Butylated Hydroxytoluene (BHT) in three extenders on chilled semen of red Sokoto bucks and conception rates in does was evaluated. Twenty matured red Sokoto bucks were selected for this study. Two ejaculates were collected from each buck per week for a period of 4 weeks. Semen was collected from bucks using a battery-operated electro-ejaculator for semen analyses. Volume, colour, gross motility, concentration and percentage live spermatozoa were examined. A total of 10 ejaculates were further collected weekly from 10 selected bucks from the previous twenty good semen quality for 8 weeks. Semen was extended in tris egg-yolk (TEY), citrate egg-yolk (CEY) and tris-coconut water (TCW) extenders in test tubes, containing BHT antioxidant to obtain 0 (control), 0.5, 1.0, 1.5 and 2.0 mM/mL BHT. Sperm characteristics were determined at 0, 24, 48 and 72 hours of storage. Twenty multiparous does divided into 3 groups (A, B and C), of 7, 7 and 6 does respectively. These does received 250 μg cloprostenol intramuscularly, twice, 11 days apart and insemination was conducted 48 hours after. Groups A, B and C were inseminated with semen stored for 72 hours containing 1.0 mM/mL of BHT extended in TEY, 1.0 mM/mL of BHT extended in CEY and 0.5 mM/mL of BHT extended in TCW respectively. Ultrasonography was used for pregnancy diagnoses 47 days after artificial insemination. From the findings of this study, it was concluded that semen of red Sokoto bucks stored in tris egg yolk + 1.0 mM/mL BHT and chilled for 72 hours had better semen quality and conception rates.
研究了3种增稠剂中丁基羟基甲苯(BHT)对红索科托雄鹿冷冻精液的抗氧化作用及对雄鹿受孕率的影响。本研究选取了20只成熟的索科托红雄鹿。每周从每只雄鹿中收集两次射精,持续4周。使用电池驱动的电射精器从雄鹿身上收集精液进行精液分析。检查活精子的体积、颜色、总活力、浓度和百分比。每周从前20个精液质量好的雄鹿中选出10只雄鹿,共收集10次射精,持续8周。将精液在含有BHT抗氧化剂的三种卵黄(TEY)、柠檬酸卵黄(CEY)和三种椰子水(TCW)试管中扩展,得到0(对照)、0.5、1.0、1.5和2.0 mM/mL BHT。在储存0、24、48和72小时时测定精子特征。20头多产牛分为A、B、C 3组,分别为7头、7头、6头。肌注氯前列醇250 μg, 2次,间隔11 d, 48 h后进行人工授精。A组、B组和C组分别用TEY延长1.0 mM/mL BHT、CEY延长1.0 mM/mL BHT和TCW延长0.5 mM/mL BHT保存72 h的精液进行授精。人工授精后47天采用超声检查进行妊娠诊断。综上所述,红索科托雄鹿精液在tris蛋黄+ 1.0 mM/mL BHT中冷藏72 h后,精液质量和受精率较好。
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引用次数: 0
Fractional extracts of Azadirachta indica leaf affect spermiogram, testosterone profile, and testis histology of rabbit bucks 印楝叶部分提取物对兔雄鹿精子图、睾酮谱和睾丸组织学的影响
Pub Date : 2022-08-04 DOI: 10.4314/sokjvs.v20i5.5
M. Umar, E. Bawa, D. Ogwu, B. Hassan, B. Habib, TA Ige
The effect of fractions from a crude extract of Azadirachta indica leaves on spermatogenesis, testicular histology and testosterone concentration of New Zealand White rabbits were evaluated in this study. Twenty-five matured male New Zealand White rabbits were used for this study and were randomly assigned to five groups (A, B, C, D, and E). Group A served as the control and was administered distilled water (0.5ml); while groups B, C, D and E served as the hexane, chloroform, ethyl acetate, and butanol treated groups, respectively at the same dosage of 300 mg/kg. Semen samples were collected using an artificial vagina weekly for twelve weeks and were evaluated for volume, colour, motility, concentration, percentage live-dead ratio and morphological abnormalities. A blood sample (2ml) was also collected from each buck through venipuncture of the ear vein three times at regular intervals for the determination of testosterone concentration. Two bucks from each group were humanely sacrificed at the end of the experiment for testicular histology. Significantly lower (p<0.05) sperm motility, higher dead sperm cells, sperm abnormalities, degenerative changes, depletion and vacuolation of spermatogenic cell layers were observed in treatment group C at the end of the experiment. The present study has shown that the chloroform fraction of methanolic crude Azadirachta indica (neem) leaves extract is detrimental to sperm cells and testicular histology.
研究印楝叶粗提物对新西兰大白兔精子发生、睾丸组织学及睾酮浓度的影响。选取25只成年雄性新西兰大白兔,随机分为A、B、C、D、E 5组。A组为对照组,灌胃蒸馏水0.5ml;B、C、D、E组分别为己烷、氯仿、乙酸乙酯、丁醇处理组,剂量均为300 mg/kg。每周使用人工阴道收集精液样本,持续12周,并评估其体积、颜色、活力、浓度、活死率和形态异常。每只雄鹿定期通过耳静脉穿刺三次采集血样2ml,测定睾酮浓度。在实验结束时,从每组中人道地牺牲两只雄鹿用于睾丸组织学检查。实验结束时,C组大鼠精子活力显著降低(p<0.05),死精细胞增多,精子异常,精子退行性改变,生精细胞层耗损、空泡化。本研究表明,印楝叶甲醇粗提取物氯仿部分对精子细胞和睾丸组织有害。
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引用次数: 0
Effect of sodium selenite on sub-acute paraquat-induced toxicity in male rats 亚硒酸钠对雄性大鼠亚急性百草枯毒性的影响
Pub Date : 2022-08-04 DOI: 10.4314/sokjvs.v20i5.11
S. Idris, HA Kakkaba, S. Enam, L. Adekunle, I. Abdullahi, S. Adamu
Acute paraquat (PQ) toxicity induces redox cycling leading to fatality in both man and animals with clinical management being supportive therapy due to lack of specific and effective antidote. This study thus aimed at determining the sero-biochemical and pathological changes induced by acute PQ administration in male rats and the mitigating role of sodium selenite. Forty male rats were used for the study and were grouped into 5 of eight rats viz: Group I (control) administered distilled water (2 ml/kg), group II (15 mg/kg of PQ), group III (15 mg/kg of PQ + 0.3 mg/kg sodium selenite), group IV (30 mg/kg of PQ) and group V (30 mg/kg of PQ + 0.3 mg/kg sodium selenite). Administration were achieved per os and lasted for a week. Sera, lungs, liver and kidney samples were harvested at the end of the experiment. Result showed a significant (p < 0.05) higher liver enzymes, urea and creatinine in treated groups when compared to control. Biomarkers of oxidative stress revealed a significant (p < 0.05) increased superoxide dismutase and malondealdehyde activities of the lungs and liver. A dose-dependent pathologic lesion was also observed with milder lesions in selenium supplemented groups. The results demonstrate that selenium supplementation may be a promising therapy and should further be clinically validated.
急性百草枯(PQ)毒性诱导氧化还原循环,导致人类和动物死亡,由于缺乏特异性和有效的解毒剂,临床管理是支持治疗。本研究旨在探讨急性PQ给药引起的雄性大鼠血清生化和病理变化,以及亚硒酸钠的缓解作用。选取40只雄性大鼠进行研究,每8只大鼠分为5组,分别为:I组(对照组)给予蒸馏水(2 ml/kg), II组(15 mg/kg PQ), III组(15 mg/kg PQ + 0.3 mg/kg亚硒酸钠),IV组(30 mg/kg PQ)和V组(30 mg/kg PQ + 0.3 mg/kg亚硒酸钠)。管理工作每两周完成,持续一周。实验结束时采集血清、肺、肝和肾样本。结果显示,治疗组肝酶、尿素、肌酐均显著高于对照组(p < 0.05)。氧化应激生物标志物显示,肺和肝脏的超氧化物歧化酶和丙二醛活性显著(p < 0.05)升高。硒补充组也观察到剂量依赖性病理病变,病变较轻。结果表明,补充硒可能是一种有希望的治疗方法,需要进一步的临床验证。
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引用次数: 0
In vitro anticoccidial activity of ethanolic leaf extract of Citrus aurantium L. against Eimeria tenella oocysts 柑桔叶乙醇提取物对柔嫩艾美耳球虫卵囊的体外抗球虫活性研究
Pub Date : 2022-08-03 DOI: 10.4314/sokjvs.v20i5.4
A. Ishaq, D. Sani, SA Abdullhi, I. Jatau
This study was carried out to examine the anticoccidial effect of Citrus aurantium L ethanol leaf extract against the oocysts of Eimeria tenella isolated from broiler chickens. The fresh leaves of C. aurantium were collected from Emirate Garden, Katsina, authenticated, air-dried at room temperature, pulverised by milling and subjected to extraction. Sporulation inhibition bioassay was employed to examine the activity of C. aurantium ethanol extract on the sporulation of E. tenella oocysts. In this assay, deep well petri dishes containing 100 unsporulated oocysts were subjected to 2 ml of five different concentrations of the extract (2.5, 5, 10, 20 and 30 mg/ml) in triplicates while oocysts sporulated in 2.5% potassium dichromate solution (K2Cr2O7) and phenol served as control groups. The content of the Petri dishes was stirred to ensure adequate oxygenation. The experimental set-up was incubated at room temperature and examined after 24 and 48 hours for sporulation inhibition. The sporulated and unsporulated oocysts were determined by counting using the Mcmaster apparatus. Phytochemical screening of C. aurantium revealed the presence of alkaloids, saponins, carbohydrates, steroids and tannins. The result showed that ethanolic leaf extract of C. aurantium to possess anticoccidial activity against unsporulated oocysts of E. tenella in a concentration-dependent manner. There was significant difference (p < 0.05) in the sporulation inhibition activity, with the highest (97 ± 0.8%) at 30 mg/ml and the lowest activity (8 ± 1.0%) at 2.5 mg/ml concentration of the extract after 48 hours of incubation. There was a general trend of sporulation inhibition with an increase in the concentration of the plant extract. The findings from this study showed ethanol leaf extract of C. aurantium possesses a remarkable In vitro anticoccidial effect that may be further scientifically explicated.
本试验研究了柑桔乙醇叶提取物对肉鸡嫩艾美耳球虫卵囊的抗球虫作用。采自卡齐纳酋长国花园(Emirate Garden)的金莲鲜叶,经鉴定,室温风干,碾磨粉碎,提取。采用抑孢生物测定法研究了金金莲乙醇提取物对柔嫩芽孢杆菌卵囊产孢的抑制作用。在本实验中,将含有100个未产孢卵囊的深井培养皿中分别加入2.5、5、10、20和30 mg/ml的5种不同浓度的提取物,共2 ml,共3次,同时将产孢卵囊放入2.5%重铬酸钾溶液(K2Cr2O7)和苯酚中作为对照组。搅拌培养皿的内容物以确保充氧充足。实验装置在室温下孵育,并在24和48小时后检测产孢抑制。用麦克马斯特计数仪计数有孢子和无孢子卵囊。植物化学筛选结果显示,金菖蒲含有生物碱、皂苷、碳水化合物、甾体和单宁。结果表明,金莲叶乙醇提取物对未产孢子的柔嫩E.卵囊具有一定的抗球虫活性,且呈浓度依赖性。不同浓度提取物的抑孢活性差异有统计学意义(p < 0.05),在30 mg/ml浓度下抑孢活性最高(97±0.8%),在2.5 mg/ml浓度下抑孢活性最低(8±1.0%)。随着植物提取物浓度的增加,孢子萌发有抑制的总体趋势。本研究结果表明,金金莲叶乙醇提取物具有显著的体外抗球虫作用,该作用可能进一步得到科学解释。
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引用次数: 4
Prenatal skull radiography and calvaria histogenesis in Uda and Yankasa breeds of sheep 乌达羊和洋卡羊的产前颅骨x线摄影和颅骨组织发生
Pub Date : 2022-08-03 DOI: 10.4314/sokjvs.v20i5.3
SM Atabo, A. Umar, S. Shehu, A. Abubakar, A. Danmaigoro, TA Muazu
The anterior fontanelle was opened and radiolucent in the second trimester; at the third trimester, the fontanelle began to shrink and finally closed at birth and became radiopaque. The borders of the orbit and the teeth were both radiolucent and undifferentiated at the second trimester and at the third trimester, and these regions became radiopaque at the second and third trimester, respectively. The histomorphology of the calvarium in the first-trimester foetus had three layers consisting of the mesenchymal and osteoblast cells; as the foetus ages within the second trimester, the mesenchymal cells were transformed into osteoblast, colonies, primitive bone spicules, matured bone spicules, and primitive trabeculae respective, in the third trimester, the primitive trabeculae developed into a matured trabeculae, in the day old, the matured trabeculae transforms into a primitive spongy bone. However, this process occurs earlier in Yankasa than in Uda. The histomorphology of the calvarium during foetal life is similar in the Uda and Yankasa. However, the stages of calvarium development occur earlier and faster in Yankasa than Uda of the same ages. This implies that foetal development and time of parturition could occur earlier in the Yankasa compared to the Uda breeds.
妊娠中期前囟门打开,透光;在妊娠晚期,囟门开始收缩,最终在出生时关闭,变得不透光。在妊娠中期和晚期,眼眶和牙齿的边界都是透光和未分化的,这些区域分别在妊娠中期和晚期变得不透光。孕早期胎儿颅骨的组织形态有三层,由间充质细胞和成骨细胞组成;在妊娠中期,随着胎儿年龄的增长,间充质细胞分别转化为成骨细胞、菌落、原始骨针状体、成熟骨针状体和原始骨小梁,在妊娠晚期,原始骨小梁发育为成熟骨小梁,在1龄时,成熟骨小梁转变为原始海绵状骨。然而,这个过程在雁坂比在乌达发生得更早。胎儿时期的颅骨组织形态在乌达族和扬卡萨族是相似的。然而,与同年龄的Uda相比,Yankasa的颅骨发育阶段发生得更早、更快。这意味着胎儿发育和分娩时间可能发生在Yankasa比Uda品种更早。
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引用次数: 0
Effects of Allium sativum and Allium cepa on semen characteristics, sperm reserves and haematology of rabbit bucks 大蒜和大蒜对兔雄鹿精液特征、精子储备和血液学的影响
Pub Date : 2022-08-03 DOI: 10.4314/sokjvs.v20i5.2
SD Olojo, P. Rekwot, RY Olobatoke, SF Uchenna, KO Jolayemi
The effect of dietary inclusion of garlic and onion on semen characteristics, gonadal, extragonadal sperm reserves and haematology of rabbit bucks were evaluated. Twenty-four rabbit bucks of average age and weight 10 ± 2.0 months and 1.47 ± 0.01 kg respectively, were used for the study. They were randomly assigned into four groups of six bucks each. Group A served as control, while Groups B, C and D received dietary inclusion of 5% garlic, 5% onion, 2.5% garlic + 2.5% onion, respectively. The fresh bulbs of garlic and onions were peeled, air-dried, and the dried bulbs were weighed, added to the feed and grounded together to form experimental diets. Before dietary supplementation, semen samples were collected to serve as baseline values, followed by weekly collections for another 9 weeks using an artificial vagina. Haematological parameters were examined according to the standard procedure, while testosterone profile was conducted using the ELISA method. At the termination of the experiment, two bucks from each group were euthanised, and the testes were harvested to evaluate gonadal and extragonadal sperm reserves. No significant (p > 0.05) difference was recorded in the live weight, sperm concentration, and sperm abnormality of the rabbit bucks. A significant (p < 0.05) difference was observed in the ejaculate volume, gross motility, pH, reaction time, and percentage of live spermatozoa. The epididymal sperm reserves in group B, was significantly (p < 0.05) higher in the right than left. Testosterone profile showed significant (p < 0.05) difference at 9 and 10 a.m. On haematology, there was a significant increase in PCV, RBC count, haemoglobin concentration and WBC count in groups B, C and D by week 9 compared to the control. In conclusion, the dietary inclusion of garlic and onion effectively improved the spermiogram of rabbit bucks.
研究了饲粮中添加大蒜和洋葱对兔雄鹿精液特性、生殖腺、生殖腺外精子储备和血液学的影响。选用平均年龄为10±2.0月龄、平均体重为1.47±0.01 kg的雄兔24只。他们被随机分成四组,每组6美元。A组为对照组,B、C、D组分别在饲粮中添加5%大蒜、5%洋葱、2.5%大蒜+ 2.5%洋葱。新鲜的大蒜和洋葱球茎被剥皮,风干,干燥的球茎被称重,添加到饲料中,一起磨碎,形成实验饲料。在补充膳食之前,收集精液样本作为基线值,随后使用人工阴道每周收集9周。血液学参数按标准程序检测,睾酮水平采用ELISA法检测。在实验结束时,每组中有两只雄鹿被安乐死,并收获睾丸以评估生殖腺和生殖腺外精子储备。各组兔雄鹿的活重、精子浓度和精子异常无显著性差异(p < 0.05)。两组在射精量、总运动力、pH值、反应时间和活精子百分率方面差异均有统计学意义(p < 0.05)。B组右侧附睾精子储量显著高于左侧(p < 0.05)。睾酮水平在上午9点和10点有显著性差异(p < 0.05)。在血液学方面,与对照组相比,到第9周,B、C和D组的PCV、红细胞计数、血红蛋白浓度和白细胞计数显著增加。由此可见,饲粮中添加大蒜和洋葱可有效改善兔雄鹿的精子图谱。
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引用次数: 0
Anti-diarrhoeal effects of Garcinia kola (Heckel-Holl) seed methanolic extract and its fractions in animal models Garcinia kola (heckell - holl)种子甲醇提取物及其组分在动物模型中的抗腹泻作用
Pub Date : 2022-08-03 DOI: 10.4314/sokjvs.v20i5.1
M. Okoronkwo, M. Suleiman, N. Chiezey, CC Udechukwu, J. Oyetunde, KO Jolayemi
This study investigated the In vitro spasmolytic and In vivo anti-diarrhoeal effects of Garcinia kola seed extract/fractions. Extraction was done by maceration in 70% methanol, serially partitioned in ethyl acetate and n-hexane. Qualitative phytochemical screening was carried out on the crude extract/fractions. The In vitro spasmolytic effect of the extract and fractions at different concentrations (0.5×103, 0.2×103,0.1×103, 0.6×102 mg/ml) were investigated against spontaneous and acetylcholine-induced contractions in isolated rabbit jejunum as well as histamine-induced contractions using isolated guinea pig ileum. The In vivo anti-diarrhoeal effect of the extract was evaluated using three diarrhoeal models: castor oil-induced diarrhoea, charcoal meal gastrointestinal transit time and castor oil-induced enteropooling. In each model, 25 mice were randomly divided into five groups of 5 mice each. Group I served as the untreated control, while group II was a positive control. Groups III-V were administered 125, 250 and 500 mg/kg of the crude methanol extract, respectively. The crude extract, ethyl acetate and aqueous fractions at 0.5×103 mg/ml respectively exhibited 14.4%, 12.9% and 12.2% spasmolytic activities against acetylcholine-induced rabbit jejunum contractions. Histamine-induced guinea pig ileum contractions were inhibited by crude extract (6.2%), ethyl acetate (6.2%), aqueous fraction (7.2%) at 0.6×102 mg/ml. For castor oil-induced diarrhoea, the crude extract at 500 mg/kg produced a significant (p < 0.05) decrease in the diarrhoeal index and faecal weight with a percentage inhibition of 70.4% compared with controls. Similarly, the crude extract (500 mg/kg) significantly (p < 0.05) decreased the charcoal meal gastrointestinal transit time with a percentage inhibition of 33.9% and elicited significant (p < 0.05) intraluminal fluid reduction (9.1%) in castor oil-induced enter pooling test when compared with the untreated group. In conclusion, the anti-motility and anti-secretory activities of the crude extract were attributed to the phytochemical constituents present.
本研究探讨了藤黄籽提取物的体外解痉作用和体内抗腹泻作用。采用70%甲醇浸渍,乙酸乙酯和正己烷分级萃取。对粗提物/馏分进行了定性植物化学筛选。研究了不同浓度(0.5×103, 0.2×103,0.1×103, 0.6×102 mg/ml)的提取物及其组分对离体家兔空肠自发收缩和乙酰胆碱诱导的收缩以及豚鼠离体回肠组胺诱导的收缩的体外解痉作用。采用蓖麻油致腹泻、炭粉胃肠道传递时间和蓖麻油致肠池三种腹泻模型,评价该提取物的体内抗腹泻作用。每个模型25只小鼠随机分为5组,每组5只。ⅰ组为未治疗对照组,ⅱ组为阳性对照组。III-V组分别给予粗甲醇提取物125、250和500 mg/kg。在0.5×103 mg/ml浓度下,粗提物、乙酸乙酯和水馏分对乙酰胆碱诱导的家兔空肠收缩的解痉活性分别为14.4%、12.9%和12.2%。粗提物(6.2%)、乙酸乙酯(6.2%)、水溶液(7.2%)0.6×102 mg/ml均能抑制组胺诱导的豚鼠回肠收缩。与对照组相比,蓖麻油粗提物浓度为500 mg/kg时,腹泻指数和粪便重量显著降低(p < 0.05),抑制率为70.4%。同样,蓖麻油粗提物(500 mg/kg)与未处理组相比,显著(p < 0.05)缩短了炭粉胃肠道传递时间(33.9%),显著(p < 0.05)减少了蓖麻油诱导的进入池试验的腔内液体(9.1%)。综上所述,粗提物的抗运动和抗分泌活性与所含的植物化学成分有关。
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引用次数: 0
Impact of heat stress on follicular size, oestradiol concentration and oestrus expression in Nigerian Zebu cows 热应激对尼日利亚Zebu奶牛卵泡大小、雌二醇浓度和发情表达的影响
Pub Date : 2022-08-02 DOI: 10.4314/sokjvs.v20i2.2
W. Ndumari, P. Dawuda, I. Ate, P. Rekwot
The study was conducted to evaluate the effect of heat stress on follicular size, oestradiol concentrations and oestrus expression in different seasons on Zebu cows. Twelve (n=12) matured, Zebu cows were utilized for over a year. The year was divided into 3 phases. Ambient temperature, relative humidity and rectal temperature were determined using. Cows were synchronized for oestrus. Ultrasonic follicular studies were carried out daily. Blood samples were collected after administration of a second dose of PFG2α to assess serum concentration of oestradiol. The enzyme-linked immunosorbent assay technique was used to determine the concentration of oestradiol. Oestrus activities were monitored by visual observation. Follicle diameters at 24 hr were lower (P< 0.05) in the cold, dry season (6.34± 0.68 mm) than hot dry (8.09±0.52 mm) and the rainy season (8.62±0.9 mm). At 72 hr, follicular diameters were significantly higher P<0.05 in the hot, dry season (17.01±1.41 mm) than cold dry (12.90±1.22 mm) and the rainy season (12.08±0.82 mm). Time to peak of oestradiol concentrations was shorter P<0.05 in the cold, dry season (31.50±5.41 hr), followed by a hot, dry season (35.42±4.25 hr) and then rainy season (52.25±7.08 hr). The amplitude of oestradiol was higher P<0.05 in the cold, dry season (39.13±5.27 pg/mL) than hot dry (19.50±2.52 pg/mL) and rainy seasons (17.63±1.89 pg/mL). Durations of proestrus oestradiol surges were significantly higher P<0.05 in the rainy season (40.88±7.10 hr) followed by a hot, dry season (35.50±7.71 hr) and then cold dry season (24.25±3.27 hr.). The total number of mounting activities for two hr. was higher P<0.05 in the cold, dry season (7.6±0.93/hr) followed by rainy season (6.2±1.28/hr) and then hot dry season (4.4±0.81/hr). In conclusion, the study showed that heat stress affected oestrus expression by lowering the number of mounts per hour, increasing follicular size and reducing oestradiol concentration of these cows.
本试验旨在研究热应激对不同季节瘤牛卵泡大小、雌二醇浓度和发情表达的影响。12头(n=12)成熟,瘤牛被利用超过一年。这一年分为三个阶段。测定环境温度、相对湿度和直肠温度。母牛同步发情。每天进行超声卵泡检查。在给予第二剂量PFG2α后采集血样,评估血清雌二醇浓度。采用酶联免疫吸附法测定雌二醇浓度。用目测法监测发情活动。冷、干季节24小时毛囊直径(6.34±0.68 mm)低于热、干季节(8.09±0.52 mm)和雨季(8.62±0.9 mm) (P< 0.05)。72 h时,热、干季节毛囊直径(17.01±1.41 mm)显著高于冷、干季节(12.90±1.22 mm)和雨季(12.08±0.82 mm), P<0.05。冷干季雌二醇浓度达到峰值的时间(31.50±5.41 hr)较短,P<0.05,其次是热干季(35.42±4.25 hr),然后是雨季(52.25±7.08 hr)。寒干季节雌二醇的振幅(39.13±5.27 pg/mL)高于干热季节(19.50±2.52 pg/mL)和雨季(17.63±1.89 pg/mL), P<0.05。发情前期雌二醇峰值持续时间以雨季(40.88±7.10 hr)显著高于旱季(35.50±7.71 hr),旱季(24.25±3.27 hr)次之。两小时内安装活动的总数。冷、枯水期(7.6±0.93/hr)、雨季(6.2±1.28/hr)、热、枯水期(4.4±0.81/hr) P<0.05。综上所述,热应激通过降低奶牛每小时产仔数、增加卵泡大小和降低雌二醇浓度来影响发情表达。
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引用次数: 0
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Sokoto Journal of Veterinary Sciences
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