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试验Ⅰ、Ⅱ、Ⅲ、Ⅳ组在超饲养饲粮基础上分别添加2%玉米油、2%豆油、2%猪油和2%的鱼油,研究不同油脂对朗德鹅填饲3周后肥肝生产性能、肝外脂肪沉积的影响。试验结果:①肥肝均重方面,Ⅰ组与Ⅲ组间差异显著(P<0.05),Ⅱ组与Ⅲ组间差异极显著(P<0.01),Ⅳ组与Ⅲ组间差异不显著(P>0.05);肝体比和肝屠比两植物油组(Ⅰ组、Ⅱ组)与Ⅳ组间差异显著(P<0.05),与Ⅲ组间差异不显著(P>0.05);料肝比Ⅰ、Ⅱ、Ⅲ组均低于Ⅳ组,但前三组差异不显著(P>0.05),Ⅰ和Ⅳ间差异显著(P<0.05),Ⅱ、Ⅳ组间差异极显著(P<0.01)。其比例排序为Ⅳ组>Ⅲ组>Ⅰ组>Ⅱ组。②屠宰性能方面,屠宰率、全净膛重、全净膛率等指标各组差异均不显著(P>0.05)。屠体重Ⅱ组与Ⅲ组差异显著(P<0.05)。③腹脂重、腹脂率植物油组(Ⅰ、Ⅱ组)与动物油组(Ⅲ、Ⅳ组)间差异显著(P<0.05),Ⅱ组与Ⅲ、Ⅳ组间差异极显著(P<0.01)。结论:植物油组产肝性能优于动物油组,而在填饲饲粮中添加豆油可使肥肝产肝性能最佳,腹脂沉积最少。 相似文献
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不同油脂对填饲后朗德鹅产肝性能及胸肉中氨基酸含量的影响 总被引：1，自引：0，他引：1
采用单因子设计方案,将体重4.5~5.0 kg健康朗德鹅450只随机分成3组,其中Ⅰ组为对照组,Ⅱ组和Ⅲ组分别为试验组,每组150只,组内3个重复。Ⅰ、Ⅱ、Ⅲ组在超饲养饲粮基础上分别添加2%的鹅油、2%豆油和2%玉米油,研究不同油脂对朗德鹅产肝性能及胸肌中氨基酸成分的影响。结果:肥肝均重和肝体比Ⅰ组与Ⅱ组、Ⅰ组与Ⅲ组间差异显著(P(0.05),但Ⅱ组与Ⅲ组间差异不显著(P>0.05);料肝比Ⅱ组与Ⅲ组均低于Ⅰ组,但差异不显著(P>0.05),其中Ⅰ组最高,Ⅱ组最低,Ⅲ组介于二者之间。试验组与对照组各组胸肌水分、蛋白质和脂肪差异均不显著(P>0.05),试验组间差异也不显著(P>0.05);各组胸肌氨基酸含量试验组与对照组间均差异不显著(P>0.05),试验组间差异也不显著(P>0.05)。结论:植物油组产肝性能明显优于动物油组,其中豆油组肥肝性能最佳。 相似文献
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不同脂肪源对朗德鹅产肝性能及血液生化指标的影响 总被引：1，自引：0，他引：1
试验采用单因子设计方案,将450只70日龄同批孵化、体重相近、健康的朗德鹅随机分成3组,其中Ⅰ组为对照组,Ⅱ、Ⅲ组分别为试验组;每组3个重复,每个重复50只。Ⅰ、Ⅱ、Ⅲ 组在超饲养日粮基础上分别添加2%的鹅油、2%豆油和2%玉米油,研究不同脂肪源对朗德鹅填饲3周后产肝性能及血液生化指标的影响。试验结果表明,与Ⅰ组相比,Ⅱ、Ⅲ组肥肝均重和肝体比显著增加(P<0.05),Ⅱ、Ⅲ组之间差异不显著（P＞0.05）;料肝比Ⅱ、Ⅲ组均低于Ⅰ组,但差异不显著（P＞0.05）。不同脂肪源对填饲朗德鹅血清TG、CHOL、HDL和LDL影响不显著,其浓度填饲后比填饲前均增加2～4倍。 LDL、TG和CHOL浓度虽显著增加,但各组间保持稳定。 相似文献
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试验采用单因子设计方案,将450只70日龄同批孵化、体质量相近和健康的朗德鹅随机分成3组,每组150只,每组设3个重复,其中1组为对照组,2组和3组分别为试验组.1组、2组和3组在超饲养饲粮基础上分别添加2%鹅油、2%豆油和2%玉米油,研究不同脂肪源对朗德鹅产肝性能、屠宰性能及肝脏营养成分的影响.结果表明:1)肥肝均质量、肝体比和肝屠比1组与2组和1组与3组间差异显著,但2组与3组间差异不显著;料肝比2组与3组均低于1组,但差异不显著,其中1组最高,2组最低,3组介于二者之间.2)屠体质量、屠宰率、全净膛质量及全净膛率等屠宰性能指标各组差异均不显著.3)肝脏脂肪酸含量(亚油酸除外)试验组与对照组间均差异不显著.试验结果表明,植物油组产肝性能明显优于动物油组,其中豆油组肥肝性能最佳. 相似文献
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试验选取同批健康永康灰鹅30只,随机分为填饲组和对照组,观测两组鹅的体重、肥肝重、肉质、以及体尺与屠体性状等参数,结果表明,填饲组鹅的体重、肝重、腹脂重极显著高于对照组（P＜0.01）,鹅不饱和脂肪酸的相对含量明显高于饱和脂肪酸的含量,而填饲前后差异不显著,其屠体性状数据显示胫长、胫围、胸宽、骨盆宽、体斜长、龙骨长及半潜水长均与半净膛重和全净膛重极显著相关（P＜0.01）,胸深与半净膛重呈显著相关（P＜0.05）,与全净膛重没有显著相关性。各项体尺指标中只有骨盆宽与腹脂重存在极显著相关（P＜0.01）,其他指标相关性不显著。 相似文献
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试验旨在研究不同开填日龄对朗德鹅脂肪沉积与生长性能的影响。试验选取同条件饲养的70和120日龄朗德鹅各60只作为研究对象,在相同条件下开展填饲试验,正式填饲至14 d时称量试验鹅体重,试验结束时取肝脏并测量各屠宰指标以及脂肪沉积能力。结果显示:(1) 70日龄开填朗德鹅体重较120日龄开填朗德鹅低235.71 g,肝脏成熟时屠宰重基本接近,整个填饲期,70日龄开填朗德鹅增重与120日龄开填朗德鹅无显著差异。(2) 70日龄和120日龄开填朗德鹅试验结束时肝重差异显著(P<0.05),但70日龄开填朗德鹅料肝比(26.18)显著低于120日龄朗德鹅(30.43)(P<0.05)。(3)脂肪沉积方面,70日龄和120日龄开填朗德鹅腹脂重及腹脂重占体增重比例无显著差异,但120日龄组朗德鹅的肠脂重占体增重比例显著高于70日龄组(P<0.05)。(4) 70日龄开填朗德鹅屠宰后头重、小翅重、大翅重、肌胃重和鹅掌重与120日龄试验鹅差异不显著(P>0.05)。结果表明:70日龄开填朗德鹅肥肝重低于120日龄朗德鹅,但其填饲期增重多,料肝比也较低,具有更好的填饲效率。120... 相似文献
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采用单因子设计方案,将360R70日龄同批孵化、体重相近、健康的朗德鹅随机分成4组,其中Ⅰ组为对照组,Ⅱ组、Ⅲ组、Ⅳ组为试验组;每组均90只,组内3个重复.Ⅰ、Ⅱ、Ⅲ、Ⅳ组在超饲养饲粮基础上分别添加0、70、140、210IU/kg的维生素E,研究不同水平的维生素E对朗德鹅填饲后的屠宰性能和产肝性能的影响.试验结果:①试验组与对照组之间朗德鹅的各项屠宰性能指标差异不显著(P>0.05);②试验组中的平均肝重和填成率均高于对照组,Ⅲ组最高,差异显著(P<0.05);Ⅲ、Ⅳ组的料肝比显著低于Ⅰ、Ⅱ组(P<0.05);③试验组与对照组相比,每只鹩分别增收1.86、4.79、2.02元,Ⅲ组增收最高. 相似文献
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《黑龙江畜牧兽医》2020,(4)
为了研究不同能量水平日粮对21～45日龄艾维茵肉仔鸡生产性能和屠宰性能的影响,试验选择21日龄150只艾维茵肉鸡,随机分成3组,每组5个重复,每个重复10只鸡,在相同蛋白质水平下(19.50%),试验Ⅰ组、Ⅱ组和Ⅲ组肉仔鸡分别用12.50 MJ/kg、12.90 MJ/kg和13.30 MJ/kg的能量水平日粮饲喂,预试期为3 d,正试期为21 d,检测日增重、日采食量、料重比、胴体重、腹脂率、全净膛率、胸肌率以及腿肌率。结果表明:试验Ⅱ组和试验Ⅲ组的平均日增重、日采食量均显著高于试验Ⅰ组(P0.05),试验Ⅱ组和试验Ⅲ组间平均日增重、日采食量均差异不显著(P0.05),各组间料重比差异显著(P0.05);试验Ⅱ组和试验Ⅲ组的胴体重、腹脂率显著高于试验Ⅰ组(P0.05),试验Ⅱ组和试验Ⅲ组间胴体重、腹脂率差异不显著(P0.05),各组间全净膛率、胸肌率、腿肌率均差异不显著(P0.05)。说明日粮能量水平为12.90 MJ/kg时,肉鸡的生产性能和胴体性能表现较好。 相似文献
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本试验旨在比较溆浦鹅和朗德鹅肥肝营养成分和血清生化指标的差异。选取同批孵化并在相同饲养管理条件下的85日龄溆浦鹅(体重5 200 g)和朗德鹅(体重4 640 g)各60只,按品种分为2组,每组20个重复,每个重复3只。预饲5 d,填饲21 d。测定溆浦鹅和朗德鹅体重、肝脏重、腹脂重、肝脏中氨基酸和脂肪酸组成及血清生化指标。结果表明:1)溆浦鹅的末重和腹脂重显著高于朗德鹅(P<0.05),溆浦鹅和朗德鹅之间初重、体增重率、肝脏重、肝体比、饲料消耗量和料肝比无显著差异(P>0.05)。2)溆浦鹅和朗德鹅的肝脏中氨基酸组成一致,且各种氨基酸含量均无显著差异(P>0.05)。3)溆浦鹅的肝脏中不饱和脂肪酸含量极显著高于朗德鹅(P<0.01),其中反油酸甲酯、顺-11-二十碳烯酸甲酯和二十二碳六烯酸甲酯含量显著或极显著高于朗德鹅(P<0.05或P<0.01);而溆浦鹅的肝脏中饱和脂肪酸含量极显著低于朗德鹅(P<0.01),其中棕榈酸甲酯含量极显著低于朗德鹅(P<0.01)。4)溆浦鹅的血清中甘油三酯、总胆固醇、低密度脂蛋白胆固醇含量和谷草转氨酶活性显著或极显著高于朗德鹅(P<0.05或P<0.01)。溆浦鹅和朗德鹅之间血清中高密度脂蛋白胆固醇含量和碱性磷酸酶、谷丙转氨酶活性无显著差异(P>0.05)。综上所述,朗德鹅产肝性能和肝脏脂肪沉积能力在一定程度上优于溆浦鹅,但溆浦鹅肝脏中不饱和脂肪酸含量显著高于朗德鹅,更有利于人类的健康。 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