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祁玉秀 《青海畜牧兽医杂志》2013,(6):21-22
将60头八眉猪二元待产母猪随机分成实验组和对照组,每组30头,实验组在预产期前30d在母猪的饲料中添加适量的营养物质,基础喂量为每天每头2kg,每产一头仔猪增加0.25kg,仔猪生出后1～3日龄保温箱的温度控制在30～32℃,4～7日龄为28～30℃,8～28日龄圈舍温度控制在22 ～ 25℃.对照组产前30d在饲料中不添加含蛋白质饲料,每天每头饲喂3.5kg.仔猪出生1～7日龄保温箱的温度控制在28 ～30℃,8～28日龄分娩舍温度控制在20～25℃.结果表明,实验组28日龄成活率和断奶重明显高于对照组,差异均显著（P＜0.05）. 相似文献
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将60头长大二元待产母猪随机分为试验组和对照组,每组30头。试验组在预产期前15天在母猪饲料中添加适量油脂和3％色粉,基础喂量为每天每头2kg,每产1头仔猪增加0.25kg,仔猪生后1~3日龄温度控制为30℃-32℃,4-7日龄为28℃~30℃,8~21日龄为22℃~25℃。对照组产前15天不添加油脂和色粉,每天每头饲料投量3.5kg。仔猪生后1~7日龄温度控制为28℃-30℃,8~21日龄20℃~25℃。结果表明,试验组猪21日龄成活率和断奶重明显高于对照组,差异均显著(P<0.05)。 相似文献
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1初生至断奶仔猪1.1保温防压初生仔猪护理的重点是保温,1～3日龄的适宜温度为30℃～32℃,4～7日龄为28℃～30℃,8～30日龄为25℃～28℃,31～60日龄为23℃～25℃,母猪最适宜的温度为15℃～18℃,为正确处理好母猪、仔猪对温度的不同要求,产栏内应设仔猪保温箱(或栏),内吊红外线取暖灯泡 相似文献
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与中国仔猪的断奶日龄相似，欧洲仔猪的平均断奶日龄为21d～28d。仔猪阶段的饲料通常分为3个阶段：（1）教槽料：通常是哺乳仔猪在母猪的引导下采食；（2）开食前的饲料：一般在20日龄时，体重达7kg的小猪，一直采食开食前料直到体重达15kg；（3）开食料：一般小猪断奶后20～50日龄期间采食，体重从15kg到30kg。在法国，平均每头母猪年产仔猪数达20头，采用这种饲养方案的仔猪， 相似文献
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选择预产期接近、饲养条件相似的母猪50头,随机分为试验组(30头)和对照组(20头)。试验组母猪临产前14d注射利特佳(仔猪C型产气荚膜梭菌大肠埃希氏菌二价灭活苗,美国辉瑞产品)2mL/头;产前产后各7d按每吨饲料添加80%支原净(上海诺华产品)125g和30%金霉素3kg;从临产前5d开始,每天用拜洁带猪消毒;产前1h用安多福消毒液清洗母猪乳房及外阴,产后保证每头仔猪吃足初乳;从仔猪补料到断奶后7d的饲料中添加1%快育灵(喹乙醇)10kg/t;发现腹泻仔猪立即口服氟哌酸粉剂。对照组常规管理。结果表明,试验组仔猪30窝315头,红、黄、白痢和水肿病发病头数和死亡… 相似文献
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选取50日龄以上，体重在8kg以内的仔猪24头，随机分为2组。对照组喂小猪料，实验组另外添加2％护仔康2号。饲喂17d后，对照组死亡7头，每头日增重仅0．047kg，发病率和死亡率分别为83％和58％；实验组仅有个别发病，无死亡，且每头日增重达0．193kg，料肉比为2.07：1。每头日增重实验组是对照组的322％。 相似文献
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《甘肃畜牧兽医》1993,(4)
在配合料中添加麦饭石饲喂畜禽,有促进生长发育,提高饲料利用率的作用。迄今尚未见到用麦饭石饲喂哺乳母猪和吮乳仔猪的试验报道。为了探讨饲喂洛南麦饭石对哺乳母猪繁殖和吮乳仔猪生长发育的作用,1991年8月至1991年11月,在陕西省畜牧兽医研究所试验种猪场进行了本试验。选择怀孕、胎次相同的长白母猪30头,分为试验组(20头)和对照组(10头)。正式试验60天。试验组从母猪产仔第一天始,在基础饲料中添加洛南麦饭石粉(100:2)。单圈饲养。每头母猪日定量2.5kg 混合料,每天定时饲喂3次湿拌料,自由饮水。仔猪开食后,自由采食,仔猪料内添加麦饭石比例与母猪料相同。结果,吮乳仔猪20—60日龄平均窝增重,试验组为86.93±21.00kg,对照组为71.36±22.17kg,试验组比对照组窝均增重 相似文献
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饲养管理好仔猪是搞好养猪生产的基础,仔猪培育工作的成败和仔猪育成率的高低,既是养猪生产技术水平高低的直接体现,又是养猪经济效益的根本点.下面就如何做好哺乳仔猪阶段性的饲养管理工作进行分析浅谈,供广大从业者交流参考.
1 初生至3日龄仔猪的饲养管理
1.1 母猪产仔时必须有专人守在旁边照看接生
1.1.1 产房温度
了解产房舍内温度,防止初生仔猪受冻下痢无人照看,做到产房内设有保温箱,箱内有保温板(挂保温灯),在母猪产仔前使保温箱内温度保持在30～32℃.仔猪的最适温度为:生后1～7日龄为30～32℃,8～14日龄为28～30℃,15～21日龄为26～28℃,22～28日龄为24～26℃,28～35日龄为22～24℃. 相似文献
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关系到猪场经营成败的主要生产指标有哪些呢?经营良好的猪场应做到:①后备母猪达6月龄、110 kg能出现初情期,经产母猪断奶后7 d内90%能正常发情配种;②仔猪初生重达1.5 kg,28日龄断奶重达8.0 kg以上;③平均每头母猪年提供合格断奶仔猪数达22头以上;④平均每头母猪年提供合格上市育肥猪达20头以上;⑤160日龄体重达100 kg以上,全群料重比在3.2以下. 相似文献
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《养殖与饲料．饲料世界》2015,(3):70
<正>1)在猪的日粮中添加4%的薄荷叶粉,日增重可提高16%左右。2)在断奶仔猪基础日粮中添加2%的海带粉,饲养90 d,日增重可提高23.62%,饲料转化率可提高13.32%。3)体重6~8 kg的断奶仔猪,每头每天添加30 g泡桐树叶粉,连喂2个月,比对照组增重24%;25~30 kg的架子猪,隔天每头1次喂给60 g泡桐树叶粉,连喂1个月,比对照组平均每头多增重14%。4)在仔猪饲料中添加3%~4%艾叶粉、育成猪添加1.5%~2.0%,可使日增重提高5%~8%,饲料消 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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以国际标准强毒Ｒ株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离ＭＧ,并收集感染鸡所产蛋分离ＭＧ。结果表明,人工感染４８小时后上、下呼吸道及肺已被全面感染,９６小时气囊已被感染,１２０小时输卵管已能分离到ＭＧ,卵巢始终分离不到ＭＧ。人工感染鸡自１４４小时便能在其所产蛋中分离出ＭＧ。药物治疗能在７２小时内消除感染,油乳剂苗则需２４天后逐渐降低蛋内ＭＧ分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内ＭＧ,但以研制的种蛋浸泡剂药浴效果为最好。 相似文献
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Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF
Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo. 相似文献