共查询到19条相似文献，搜索用时 62 毫秒
1.
选取6头大白经产母猪及其所产仔猪,随机分为两组,分别于断奶时和断奶后15天时上午采血,检验血液学、血清生化等多项指标,并统计断奶后15d内仔猪的腹泻发生率和生长速度,结果如下:与对照组同期情况相比,在仔猪料中添加了2%的抗仔猪断奶应激剂的试验组仔猪血清中LDH、ALT、γ-GT活性在断奶后15天时板显著降低(P＜0.01),AST活性显著降低(P＜0.05),血清中TP、ALB、GLU含量极显著增加(P＜0.01),Ca含量显著增加(P＜0.05),血液中RBC数量极显著增加(P＜0.01),与对照组相比,试验组仔猪断奶后15d个体净增重显著增加(P＜0.05),腹泻发生率显著降低(P＜0.05).结果表明,试验组仔猪的早期断奶应激反应明显缓解,机体的消化吸收功能明显增强,抵抗力也明显增加,达到了综合防治仔猪断奶应激的目的. 相似文献
2.
抗仔猪断奶应激剂对断奶仔猪血清生化指标及血常规的影响 总被引：1，自引：0，他引：1
选取6头经产大白母猪及其所产仔猪,随机分为两组,分别于断奶时和断奶后15天时上午采血,检验血液学、血清生化等多项指标,结果如下:与对照组同期相比,在断奶仔猪料中添加了2%的抗仔猪断奶应激剂的试验组仔猪血清中LDH、ALT、γ-GT活性在断奶后15天时极显著降低(P<0.01),AST活性显著降低(P<0.05),血清中TP、ALB、GLU含量极显著增加(P<0.01),Ca含量显著增加(P<0.05),血液中RBC数量极显著增加(P<0.01)。结果表明,试验组仔猪的早期断奶应激反应明显缓解,机体的消化吸收功能显著增强,抵抗力也明显增加,达到了综合防治仔猪断奶应激的目的。 相似文献
3.
发酵豆粕配制抗断奶应激仔猪料饲养试验 总被引：9，自引：0，他引：9
选择母猪体况健康、年龄胎次、窝产仔数、产期尽量一致的经产杜长大杂交仔猪20窝,7日龄时随机分为两组,分别补饲对照组和试验组饲料,对照组为商品普瑞纳仔猪颗粒料,试验组为采用发酵豆粕配合膨化大豆、乳清粉、进口鱼粉等原料,添加酶制剂、酸制剂及免疫活性物质等成分,自行配制的抗断奶应激仔猪料。通过试验比较仔猪采食量、日增重及腹泻率情况。结果表明,抗断奶应激仔猪试验料与商品普瑞纳仔猪颗粒料相比,能极显著提高仔猪断奶1周内日采食量,显著提高仔猪日增重,缓解断奶应激。 相似文献
4.
本试验旨在研究复方中草药制剂对早期断奶仔猪蛋白质合成能力及抗应激能力的影响。选用平均体重为（7.27±0.18）kg、断奶日龄为（28±2）d的长白猪×约克夏猪仔猪126头,采用单因素完全随机区组试验设计,分为7组,每组3个重复,每个重复6头猪。日粮中中草药复方制剂剂型为水煎剂和散剂2种。试验1组为空白对照组;试验2、3、4组为水煎剂添加组,添加量分别为0.05%、0.10%、0.15%;试验5、6、7组为散剂添加组,添加量分别为0.05%、0.10%、0.15%。试验期21 d。结果表明,与对照组相比,复方中草药制剂可显著提高早期断奶仔猪血清中碱性磷酸酶（AKP）、谷草转氨酶（GOT）、谷丙转氨酶（GPT）的活力及总蛋白（TP）、白蛋白（ALB）的含量（P<0.05）,显著降低血清中尿素氮（BUN）含量（P<0.05）;显著降低早期断奶仔猪血清中肌酸激酶（CK）活力及葡萄糖（GLU）含量（P<0.05）。综上所述,在本试验条件下,复方中草药制剂能显著促进早期断奶仔猪机体蛋白质的合成,降低断奶仔猪的应激,且中草药剂型散剂优于水煎剂,最适添加比例为0.15%。 相似文献
5.
选取6头大白经产母猪及其所产仔猪,随机分为两组,分别于断奶时和断奶后15天时上午采血,检验血液学、血清生化等多项指标,结果如下:与对照组同期情况相比,在哺乳母猪料中添加了2%的“牲命1号”和在断奶仔猪料中添加了2%的“护仔康1号”的试验组仔猪血清中A ST活性在断奶后15天时极显著降低(P<0.01),γ-G T活性显著降低(P<0.05),血清中G LOB、G LU含量显著增加(P<0.05),Ca、P含量极显著增加(P<0.01),BU N含量极显著减少(P<0.01),血液中RBC数量极显著增加(P<0.01),淋巴细胞数量增加了15.41%,嗜碱性细胞、嗜酸性细胞、嗜中性细胞和单核细胞分别减少了100%、8.29%、22.70%和65.22%。结果表明,试验组仔猪的早期断奶应激反应明显缓解,机体的消化吸收功能明显增强,抵抗力也明显增加,达到了综合防治仔猪断奶应激的目的。 相似文献
6.
为了筛选较好的仔猪抗断奶应激营养剂,挑选体重相近、健康度良好的21日龄断奶的健康仔猪125头,随机分为5组,每组25头,标记为试验A组、B组、C组、D组及对照组。将4种营养剂添加于试验组断奶仔猪的饮水中,对照组不添加。持续14天,观察不同营养剂对断奶仔猪的增重、腹泻的影响。结果显示:平均日增重,4个试验组比对照组高出72g~100g,提高了78.3%~100.7%,差异极显著(p0.01),全期高1.0kg~1.4kg,4个试验组间无差异;腹泻率:对照组为12%,4个试验组圴为0;头均经济效益增加0.75元~9.55元。本次试验结果表明:在断奶仔猪饮水中添加营养剂,均能有效减少仔猪断奶应激、提高日增重和经济效益。4种营养剂中,D组最好,B与C相似,A排最后。 相似文献
7.
不同抗应激添加剂对断奶仔猪的影响 总被引：10，自引：0，他引：10
本试验研究了不同抗应激添加剂对断奶仔猪的影响,试验分四个处理,每个处理做两次重复,其中Ａ处理组为对照组,Ｂ处理组是在Ａ处理组基础日粮上添加电解质及维生素。Ｃ处理组是在Ｂ处理组的基础上添加丝兰属植物提取物（Ｙｕｃｃａｓｏｌｉｄｓ）,Ｄ处理组是在Ｂ处理组基础上添加中草药添加剂。试验结果表明,在２１日龄平均日增重方面,添加丝兰属植物提取物（ＹＵＣＣＡ）处理组最好,与对照组比较差异显著（Ｐ＜０．０５）,与添加矿物质及多维处理组比较,差异不显著（Ｐ＞０．０５）,与添加中草药处理组比较,差异极显著（Ｐ＜０．０１）;其次是添加电解质及维生素处理组较好,与添加中草药试验组比较,差异极显著（Ｐ＜０．０１）,与对照组比较,差异不显著（Ｐ＞０．０５）;添加中草药试验组最差,与对照组比较差异显著（Ｐ＜０．０５）;在抑制仔猪下痢方面,添加中草药试验组最好,对照组最差;在料重比方面,添加ＹＵＣＣＡ试验组较好。综上所述,添加丝兰属植物提取物试验组对断奶仔猪抗应激最好。 相似文献
8.
1 断奶前母猪减料。仔猪断奶前的5～6d，每1d适当减少母猪精饲料的供给量，以减少母猪泌乳量，促使仔猪多吃饲料。减少精料喂量还可防止母猪发生乳房炎。2 仔猪断奶日龄必须适宜。以仔猪35～42日龄，体重达5kg以上，日采食量达150g以上断奶为宜。3 避免应激因素影响。仔猪进行免疫注射、割骟时应暂缓断奶，因为这些因素会加重断奶应激。体弱的仔猪应待体重和采食量达到断奶要求时，再行断奶。4 实行逐渐断奶法。为避免仔猪断奶后，因环境和营养方式变化而产生不适，要实行逐渐断奶法断奶。具体步骤为：第1d仔猪哺乳5～6次，吃完奶即与母猪分… 相似文献
9.
断奶仔猪因诸多应激因素和机体抵抗力下降,往往会导致断奶后的2～15天内仔猪腹泻或水肿,少数为内毒素休克,称为断奶仔猪应激综合症。断奶仔猪应激导致仔猪发病、死亡或生长停滞,给养猪业带来很大的经济损失。1发病原因1.1断奶应激1.1.1营养应激。仔猪由吸吮含香味、高营养的母乳和少量的硬颗粒料或散料,断奶后转向只吃营养成份较差料,造成饲料营养应激。1.1.2环境应激。仔猪断奶后,离开了母猪所处的优越环境,转入条件较差的保育舍,周围的环境、栏舍、温度、湿度、伙伴等均发生了变化,导致环境应激。1.1.3争斗应激。由于断奶后的重新组群、群… 相似文献
10.
早期断奶应激对仔猪血清生化指标的影响 总被引：7，自引：0，他引：7
5窝 3 5日龄仔猪 4 0头 ,随机分成 2组 ,每组 2 0头 ,每窝 4头。 组仔猪 3 5日龄断奶后留原栏 , 组仔猪 3 5日龄随母猪转栏。在断奶时和断奶后 1、3 d,仰卧前腔静脉采血 ,进行生化指标检验。结果表明 , 组仔猪断奶后 3 d,血清尿素氮 ( BUN)水平升高 ( P <0 .0 5) ,血清球蛋白 ( GLOB)水平降低 ( P <0 .0 5)。断奶后腹泻仔猪的血清钠 ( Na)、葡萄糖 ( GLU)、总蛋白 ( TP)、氯 ( Cl)、清蛋白 ( ALB)水平与腹泻前相比显著下降或极显著下降 ( P<0 .0 5或 P<0 .0 1 ) ,血清尿素氮 ( BUN )、乳酸脱氢酶 ( LDH )、肌酸激酶 ( CK )、球蛋白( GLOB)升高 ( P <0 .0 5或 P <0 .0 1 ) 相似文献
11.
《中国兽医杂志》2019,(4)
为了研究仔猪断奶应激对肠道微生物菌群的影响,试验选择同1日龄来自同一窝的杜-长-大仔猪和莱芜猪仔猪各10头作为研究对象,均于28日龄断奶,每个品种为1个处理组,根据断奶时间分为5个阶段,断奶前1周(21 d)、断奶当天(28 d)、断奶后1 d(29 d)、断奶后1周(35 d)及断奶后2周(42 d),每个处理组每个阶段随机选取2头仔猪屠宰取样,测定空肠肠道微生物变化情况。试验结果表明,在各个阶段莱芜猪的微生物丰度都比杜-长-大要高,断奶后1 d两品种仔猪的肠道微生物丰度最高,分别是24和18,香农-维纳指数也最高,分别是2.94和2.78。荧光定量PCR检测双歧杆菌、乳酸杆菌和大肠杆菌相对含量,在断奶后1周莱芜猪的双歧杆菌是杜-长-大仔猪的6.4倍(P<0.01),莱芜猪比杜-长-大的大肠杆菌在各个时期都相对较低,杜-长-大断奶后1周空肠大肠杆菌比莱芜猪高87%(P<0.05)。结论:莱芜猪比杜-长-大仔猪空肠肠道微生物更加丰富,有益微生物菌群含量多,仔猪断奶后肠道微生物能够很快的建立起新的平衡。 相似文献
12.
13.
Biomarker responses to weaning stress in beef calves 总被引：1，自引：0，他引：1
The study objective was to investigate the physiological effects of weaning on beef calves and identify a panel of blood-based welfare biomarkers. On the day (d) of weaning (d 0), 16 spring-born, single-suckled, beef bull calves that previously grazed with their dams at pasture, were assigned to one of two treatments: (1) control (n = 8), calves were loose-housed with their dam, (2) weaned (n = 8), calves were abruptly separated from their dam and loose-housed. Jugular blood was collected on d −4, 0, 1, 2, 3, 7, and 14 relative to weaning (d 0) and assayed for inflammatory and steroid variables. Total leukocyte counts were measured in whole blood. It is concluded that neutrophil number is a robust biomarker of stress and that plasma CXCL8 is a sensitive indicator of stress in weaned and control calves. In future studies, these two biomarkers should be central to the characterisation of stress responses. 相似文献
14.
为了研究仔猪断奶应激对肠道功能和组织结构的影响,试验选择不同抗应激能力的莱芜猪和杜长大(DLY)商品仔猪各10头作为研究对象,分别于断奶前1周(21 d)、断奶当天(28 d)、断奶后1 d(29 d)、断奶后1周(35 d)、断奶后2周(42 d)5个阶段,测定十二指肠和空肠的消化酶活性、肠绒毛组织发育的变化。试验结果表明,两品种仔猪断奶后1周莱芜猪胰蛋白酶含量和活性比杜长大仔猪分别高81.48%(P<0.01)和21.44%(P<0.01);两品种仔猪的十二指肠肠绒毛长度在断奶后1周都比断奶前变短(P<0.05),断奶后1周莱芜猪的十二指肠和空肠肠绒毛长度比杜长大分别长73.62%(P<0.01)和65.63%(P<0.01)。莱芜猪比杜长大有更高的消化酶活性和肠道组织修复能力,具有更强的抗断奶应激的能力。 相似文献
15.
<正>应激反应首先是由加拿大内分泌学家HansSe-lye提出的。应激反应是机体受到强烈刺激而处于"紧急状态"时,出现的一系列神经内分泌反应,并由此引起各种机能和代谢改变,以提高机体对外环境的适应能力和维持内环境的相对稳定。应激反应过强和持续时间过久,对机体有害,会出现病理性变化。 相似文献
16.
植物提取物皂甙元对仔猪断奶应激的影响 总被引：6，自引：0，他引：6
采用单因子试验设计。选择 96头 2 8日龄大×长×北三元杂交断奶仔猪 ,随机分成 3组 ,研究饲料中添加不同剂量 (0、5 0、10 0mg/kg)植物性抗应激复合添加剂 (即植物提取物 ,以酸枣仁皂甙元为主 )对仔猪生产性能的影响。试验期 2 8d。试验结果表明 :饲料中添加植物提取物 5 0mg/kg和 10 0mg/kg ,日增重提高 7.1%～ 9.2 %(P <0 .0 5 )、采食量增加 3.5 %～ 4 .9%(P <0 .0 5 ) ,饲料转化率改善 (F/G) 3.2 %～ 3.7%(P <0 .0 5 ) ,仔猪腹泻率明显降低 ,皮毛光泽 ,行为安祥。 相似文献
17.
Weaning of beef calves is usually done abruptly and early compared to the natural weaning of the species, and is associated with simultaneous exposure of calves to a range of social and environmental stressors. Behavioural and physiological responses to weaning indicate detrimental effects on the welfare of these animals. The development and assessment of weaning methods aiming at reducing or avoiding this problem must be supported by scientific knowledge of the morphological, physiological and psychological mechanisms involved in the establishment, maintenance and braking of the cow-calf bond. Solutions also depend on the understanding of the various stressors associated with weaning, among which are the change in diet, cessation of nursing, separation from the dam, the change to a new spatial environment and the need for social reorganization following removal of the adults from the group. This review discusses these issues and assesses the effectiveness of the methods so far proposed for improving the welfare of beef calves during the weaning period. 相似文献
18.
An acute stress response can be provoked by abrupt social, nutritional, and environmental changes associated with weaning, and this may disrupt homeostasis and thus compromise well-being. Manipulating environmental factors, such as photoperiod, might provide a simple way to reduce the physiological consequences that piglets experience due to weaning stress. The objective of this study was to evaluate the impacts of photoperiod manipulation across various weaning ages on leukocyte populations, lymphocyte proliferation, natural killer cytotoxicity (NK), chemotaxis, phagocytosis, and immunoglobulin G, cortisol, and BW of piglets during the nursery phase. Sixty-eight crossbred piglets were obtained from sows kept on a short-day (8 h of light/d) photoperiod from d 90 of gestation until weaning. Piglets were weaned at 14, 21, or 28 d of age and kept on a short or long (16 h of light/d) photoperiod until 10 wk of age. Piglet BW and blood samples were collected at weaning and at 6, 8, and 10 wk of age. Pigs weaned at 28 d had reduced neutrophil counts (P < 0.001), phagocytosis (P < 0.001), and lymphocyte proliferation (P < 0.05) at weaning compared with those weaned at 14 and 21 d. Pigs weaned at 21 d tended to have lower (P = 0.08) lymphocyte counts than did pigs weaned at 14 or 28 d. Pigs weaned at 14 d had reduced (P < 0.01) NK relative to those weaned at 21 or 28 d. Photoperiod also influenced pig BW and immune status. Generally, those pigs on the long-day photoperiod and weaned at 28 d were heavier (P < 0.001) than their counterparts weaned at 14 or 21 d. At 6 wk of age, NK was greater (P = 0.002) in pigs kept on a long day and weaned at 14 or 21 d than in pigs weaned at 28 d. Phagocytosis was less (P = 0.005) at 6 wk of age, but was greater at 8 wk, in piglets kept on the long day and weaned at 28 d than in long-day pigs weaned at 14 or 21 d. These results suggest that photoperiod differentially influences immune responses in piglets weaned at different ages and indicate an inverse relationship between growth and immune status. Here, weaning at 28 d and a long-day photoperiod was the treatment combination that was most physiologically beneficial to piglets, whereas a 14-d weaning and short-day photoperiod was least physiologically beneficial. 相似文献
19.
Lei Wang Xian Tan Huiru Wang Qiye Wang Pengfei Huang Yali Li Jianzhong Li Jing Huang Huansheng Yang Yulong Yin 《动物营养（英文）》2021,7(1):101
The present study was conducted to evaluate the effect of dietary folic acid on the growth performance, intestinal morphology, and intestinal epithelial cells renewal in post-weaning piglets. Twenty-eight piglets (weaned at day 21, initial body weight of 6.73 ± 0.62 kg) were randomly allotted to 4 treatments with 7 pens per diet and 1 piglet per pen. The piglets were fed the same antibiotic-free and zinc oxide-free basal diets supplemented with folic acid at 0, 3, 9, and 18 mg/kg for 14 days. The results showed that dietary supplementation with folic acid increased villus height (VH) (P = 0.003; linear, P = 0.001), VH-to-crypt depth (VH:CD) ratio (P = 0.002; linear, P = 0.001), villus surface area (VSA) (P = 0.026; linear, P = 0.010). The analyzed parameters ADG, serum urea nitrogen (BUN) content, VH, VSA, and serum folate (SF) concentration responded linearly to the dietary folic acid concentration when the dietary folic acid concentration was below 4.42, 5.26, 4.79, 3.47, and 3.53 mg/kg respectively (R2 = 0.995, 0.995, 0.999, 0.999, 0.872, P = 0.09, 0.07, 0.09, 0.09, 0.36, respectively), as assessed by a two-linear broken-line regression. Above these breakpoints, the response of ADG, VH, VSA, and SF plateaued in response to changes in dietary folic acid concentration. Moreover, dietary supplementation with folic acid significantly increased the lactase (P = 0.001; linear, P = 0.001) and sucrase activities (P = 0.021; linear, P = 0.010) in the jejunal mucosa of weaned piglets. The mRNA expression of solute carrier family 6 member 19 (SLC6a19), solute carrier family 1 member 1 (SLC7a1), tumor necrosis factor-α (TNF-α), the number of Ki67 positive cells, and cell shedding rate had a significant linear contrast (P = 0.023, 0.021, 0.038, 0.049, and 0.008, respectively) in dietary folic acid groups. In conclusion, our results indicate that folic acid supplementation can improve the growth performance and intestinal morphology of weaned piglets by maintaining the balance of epithelial cell renewal. 相似文献