血红素铁对仔猪生长性能和血液指标的影响     

江国永  于伟  潘勇  高冬余  成国祥 《饲料与畜牧》2012,(6):42-44

选取120头28日龄断奶仔猪,随机分成4个处理组,即对照组和3个试验组,每组3个重复,每个重复10头。对照组饲喂基础日粮,试验1组、试验2组、试验3组分别饲喂基础日粮中血红素铁净添加量为27.5mg/kg、55.0mg/kg、85.0mg/kg的3种试验日粮,研究日粮中添加血红素铁对断奶仔猪的生长性能、血液指标(血红蛋白浓度、免疫球蛋白浓度)的影响。试验正试期14d。结果表明,血红素铁各添加量组均能够提高仔猪的生长性能,日粮中血红素铁添加量为55mg/kg时,仔猪平均日增重、饲料转化率较对照组分别提高12.02%和10.27%(P<0.05)。血红素铁对断奶仔猪有良好的促生长作用,也在一定程度上提高了仔猪血液中血红蛋白和IgG浓度。  相似文献   

阿奇霉素不同途径给药治疗仔猪支原体肺炎的效果比较     

朱道仙  周春宝  韩大勇  倪黎纲  陆江 《动物医学进展》2012,(2):133-135

探讨阿奇霉素不同途径给药对姜曲海仔猪支原体肺炎治疗效果的影响。将90只病猪随机均分为5组,即感染对照组、阿奇霉素混饲组、肌肉注射组、雾化给药组和静脉注射组,并设有健康对照组,试验前后自由饮食。结果表明,各治疗组的治愈率高于感染对照组(P<0.05),且以雾化给药方式的治疗效果最好,而肌肉注射组和静脉注射的不良反应率最高,与其他组差异显著(P<0.05);各治疗组平均日增重显著高于感染对照组(P<0.05),其中雾化给药最高,相对增重率达93%。试验证明,阿奇霉素雾化给药对姜曲海仔猪支原体肺炎治疗效果显著,高于其他给药方式。  相似文献   

不同复合酶对断奶仔猪生产性能和饲料养分利用率影响的比较研究     

任建波  胡忠宏  张立彬  应广飞 《饲料工业》2012,33(18):31-34

选用25～27日龄断奶的"长×大"二元杂交断奶仔猪96头[平均体重为(7.31±0.14)kg],以研究不同复合酶对断奶仔猪生产性能和饲料养分消化率的影响。试验仔猪按完全随机区组设计分为4个处理,每个处理3个重复,每个重复8头仔猪,试验期14 d。对照组饲喂基础日粮,试验组A、B、C在基础日粮中分别添加不同的复合酶A、B、C。试验结果表明:基础日粮中添加复合酶A、B、C后,断奶仔猪的平均日增重分别提高了7.58%(P<0.05)、10.15%(P<0.05)和5.74%(P<0.05),料重比分别降低了5.47%(P<0.05)、8.59%(P<0.05)和6.25%(P<0.05),有机物、粗蛋白和磷的消化率显著提高(P<0.05),粗蛋白的消化率分别提高了2.96%、3.3%和2.26%。在3种复合酶中,以复合酶B的效果为最好,其次为复合酶A和C。  相似文献   

大豆抗原及其对仔猪和犊牛的影响   总被引：12，自引：0，他引：12  

孙泽威  秦贵信  娄玉杰 《动物营养学报》2005,17(1):20-24

大豆及其制品中含有一些可以引起幼龄动物胃肠道发生过敏反应的抗原物质,这些抗原物质引起的过敏反应可造成动物肠道损伤,进而导致肠道吸收障碍,生长发育受阻。本文对大豆抗原的种类、生物学特性、不同大豆制品中的可溶性抗原及大豆抗原对仔猪和犊牛的影响进行了综述。  相似文献   

替米考星对猪传染性胸膜肺炎的治疗试验   总被引：13，自引：3，他引：10  

周绪正  张继瑜  李剑勇  李宏胜  李金善  徐忠赞 《动物医学进展》2005,26(6):84-88

为了解替米考星对猪传染性胸膜肺炎的疗效并为临床应用该药提供科学依据,将60头仔猪分为6 组(替米考星高、中、低剂量组及健康、感染和土霉素3 个对照组)进行人工感染试验。结果表明,国产替米考星拌料给药对治疗猪胸膜肺炎放线杆菌病具有明显的效果,可降低死亡率,提高成活率,减少人工感染引起的病理损伤;替米考星中、高剂量组(200 mg/kg饲料、400 mg/kg饲料)疗效尤为显著,因此临床治疗推荐剂量为200 mg/kg饲料,连用7 d。  相似文献   

日粮中添加燕麦青干草对互助八眉二元母猪初生仔猪器官发育的研究     

梁晓兵  侯生珍  杨葆春  吕凯 《畜牧与兽医》2013,45(9)

本试验旨在研究日粮中添加燕麦青干草粉对互助八眉二元母猪初生仔猪器官发育的影响.选取40头体况和胎次相近的互助八眉二元母猪作为试验动物,随机分为高纤维组、中纤维组、低纤维组和对照组(妊娠前期饲粮粗纤维水平分别为13.96％、11.02％、7.83％和4.33％,妊娠中期饲粮粗纤维水平分别为11.93％、9.26％、6.38％和4.33％).结果表明:1)肝脏指数高纤维组和中纤维组分别显著高于对照组(P＜0.05),脾脏指数处理组极显著高于对照组(P＜0.01);2)消化器官指数:胰脏指数高纤维组极显著高于对照组(P＜0.01),中纤维组显著高于对照组(P＜0.05);小肠指数高纤维组极显著高于对照组(P＜0.01),中纤维组、低纤维组和对照组无显著差异(P＞0.05);3)其他器官指数:心脏指数处理组极显著高于对照组(P＜0.01),肾脏指数高纤维组和中纤维组均显著高于对照组(P＜0.05);4)初生仔猪生产性能:对照组初生仔猪个体重最大,与中纤维组无显著差异(P＞0.05);初生产仔数、初生产活仔数高纤维组和中纤维组极显著高于对照组(P＜0.01);初生窝重中纤维组表现最好,显著高于对照组(P＜0.05).综合分析认为,中纤维组母猪日粮(妊娠前期11.02％、妊娠中期9.26％)可显著促进初生仔猪器官的发育,并改善初生仔猪的生产性能.  相似文献   

Selection potential of different prolificacy traits in the finnish landrace and large white populations     

T. Serenius  M.-l. Sevón-aimonen  A. Kause  E.A. Mäntysaari  A. Mäki-tanila 《Acta Agriculturae Scandinavica, Section A - Animal Sciences》2013,63(1):36-43

Heritabilities and genetic correlations for different prolificacy traits were estimated to assess possibilities of selection for high number of piglets weaned. Three litter-size traits: total number of piglets born (TNB), number of piglets born alive (NBA), number of piglets weaned (NW); four piglet survival traits: number of stillborn piglets (NSB), percent of stillborn piglets (NSB%), piglet mortality between birth and weaning (PM), percent of dead piglets during suckling (PM%); and three traits measuring time intervals: age at first farrowing (AFF), first farrowing interval (FFI), and gestation length (GL) were analysed. The Finnish national litter recording scheme provided data on the first parity litters of 11 329 Landrace and 8 362 Large White pigs born between 1986 and 2000. The heritabilitiy estimates were moderate for AFF and GL (0.24–0.37), and low for all the other traits (0.03–0.11). The genetic correlations between TNB and PM (0.68 in Landrace and 0.43 in Large White) and between NBA and PM (0.64 in Landrace and 0.31 in Large White) suggest that selection only for high TNB or NBA will lead to increased PM. The results showed further that GL will increase indirectly if the selection pressure is for low PM (r _g =?0.050 in Landrace and ?0.43 in Large White.  相似文献   

Sow performance and maternal behaviour in organic and conventional herds     

A. Wallenbeck  G. Gustafson  L. Rydhmer 《Acta Agriculturae Scandinavica, Section A - Animal Sciences》2013,63(3):181-191

Abstract

The study evaluates the first three parities of 144 Swedish Landrace×Yorkshire sows from three certified organic and three conventional commercial piglet-producing herds. Sows and litters were weaned at seven and five weeks post partum (pp) in organic and conventional herds, respectively. Herdsmen judged sow behaviour and maternal ability at farrowing, two weeks pp and at weaning. Herdsmen collected registrations of litter size, litter weight and sow fat status at farrowing and at weaning. Piglet mortality and oestrous signs were registered continuously during the nursing period. Sows in organic herds were scored to be more cautious among piglets, and to have better nursing behaviour and maternal ability in early lactation than sows in conventional herds. Piglet mortality was higher in organic than in conventional herds. Oestrus during lactation was only observed among sows in organic herds, and sows showing oestrus during lactation were fatter at weaning.  相似文献   

Effects of feeding bamboo vinegar and acidifier as an antibiotic substitute on the growth performance and intestinal bacterial communities of weaned piglets     

H. F. Wang  K. Gao  C. Wang  W. M. Zhang  J. X. Liu 《Acta Agriculturae Scandinavica, Section A - Animal Sciences》2013,63(3):143-150

Abstract

The experiment was designed to evaluate effects of feeding bamboo vinegar (BV) and acidifier to substitute antibiotic on the growth performance and intestinal bacterial communities of weaned piglets. Three hundred and sixty weaned piglets (body weight (BW) = 10 ± 2 kg) were allocated into three treatments for 25 days of experiment feeding, with three replicates (pen) per treatment. A basal diet was added with antibiotics (Control), 0.4% BV and 0.25% acidifier I (BVAI), or 0.4% BV and 0.25% acidifier II (BVAII), respectively. No significant differences were observed in feed intake, final weight, average daily gain and feed to gain ratio (P > 0.05) among different treatments. The species richness and bacterial community diversities in feces were higher for the pigs in treatment BVAI and BVAII than those of pigs in the Control (36.5 and 1.55, respectively), with a significant difference between BVAII and the Control (P < 0.05). The bacterial communities of pigs in BVAI and BVAII clustered together, forming a cluster we designated as Cluster C and separated from another cluster in pigs fed antibiotic designated as Cluster A in the Control treatment. The results indicate that the 0.4% BV and 0.25% acidifier can replace antibiotics in the diets for piglets without negative effects on production and allow for greater diversity of the intestinal bacterial community compared to antibiotics.  相似文献   

Specific and non‐specific immunity of piglets from sows fed diets containing specific fatty acids in field conditions     

G. Benzoni  F. Foresti  I. L. Archetti  G. Coceva  A. Guyonvarch  L. Alborali 《Journal of animal physiology and animal nutrition》2013,97(5):996-1005

The transfer of passive immunity from sows to piglets is important and it is the first immune protection of the new born piglet. Improving sows immunity by adding immuno‐stimulating product in sows diet can positively affect colostrum composition and transfer of immune molecules to piglets. The aim of the current study is to evaluate the benefit of a different solution, made of specific fatty acids from marine origin that have been used in human medicine for decades, for sows and piglets. Two trials were conducted in commercial farm, involving 240 sows at different periods of the year. Sows were divided in a control group, without supplementation, and a test group, supplemented with the feed additive from the 90th day of gestation to weaning. Sows body condition, piglets viability and growth were recorded. Milk immunoglobulin content was measured, as well as Aujeszky antibodies in sows and piglets blood as marker of specific immunity, and blood bactericidal activity, complement activity and lysozyme as markers of non specific immunity. No effect of the product was observed on piglets zootechnical criteria and specific immunity parameters but significant improvement of piglet non specific immunity, was observed. No difference was observed neither in the piglets blood PRRSV and PCV2 antibodies and viruses nor in Aujeszky antibodies. Blood complement activity seems to be an accurate indicator of immuno‐stimulating additive efficiency. Giving alkyl‐glycerol fatty acids to sows in late gestation and lactation can improve the passive immunity transfer to piglets.  相似文献