共查询到19条相似文献，搜索用时 218 毫秒
1.
选用４株从绵羊瘤胃中分离的具有固氮作用的菌株和１株适应株，经体外培养，按一定比例混合组成营养菌剂，进行枯草期牦牛的灌服试验，试验组牦牛每头每次１０ｍｌ，每间隔１５ｄ灌服１次，共８次。结果表明，在试验期内试验组牦牛平均增重１５．８９ｋｇ，对照组平均增重１０．５６ｋｇ，试验组比对照组平均多增重５．３３ｋｇ，经检验，差异显著（Ｐ〈０．０５），且该营养菌剂对试验牦牛未出现任何毒副作用。 相似文献
2.
用自制的营养菌剂在枯草期和青草期对青海省湖东种羊场的种羊和土种羊分别进行灌服试验，１５ｄ灌服１次，枯草期灌服８次，青草期灌服７次，每次每只羊５ｍｌ，结果表明，在枯草期，种羊试验组平均增重４．０３ｋｇ，对照组增重３．１４ｋｇ，土种羊试验组平均增重０．０１ｋｇ，对照组增重－１．２１ｋｇ；在青草期，种羊试验组平均增重４．１５ｋｇ，对照组增重３．４０ｋｇ，土种羊试验组平均增重１．７２ｋｇ，对照组增重１．３ 相似文献
3.
应用硒弹丸防治绵羊缺硒病的试验研究 总被引：2，自引：0，他引：2
对严重缺硒地区绵羊投硒弹后２个月，血硒含量达到正常水平，５个月达到高峰，１２个月后虽降到临界水平以下，但还是显著高于对照组（Ｐ〈０．０１）。在投硒弹后１～４个月，试验组和对照组间体重差异不明显（Ｐ〉０．０５），从第５个月开始，试验组增重极显著高于对照组（Ｐ〈０．０１），从第９个月后虽逐渐缩小，但至第１２个月试验组总增重明显高于对照组（Ｐ〈０．０５）。通过对１４９００只缺硒病羊应用硒弹后，羔羊白肌病完全得到控制，春乏死亡率降低６．５５个百分点，流产率降低８．０４个百分点，羔羊繁殖成活率提高２３．０９个百分点。试验羊比对照羊平均多增重３．０６ｋｇ，多产乱０．１１ｋｇ。研究表明，冬春枯草季节是绵羊缺硒病高发季节，选择每年１０月份投硒弹，在来年春乏和育羔阶段，羊血硒水平即达到高峰，从而发挥明显的补硒作用，完全能控制羔羊 相似文献
4.
给５只试验绵羊每只一次灌服５０ｍｌ营养菌剂。结果：试验组平均增重６．６ｋｇ,对照组增重３．９０ｋｇ,试验组的增值效果显著（Ｐ＜０．０５）,灌服绵羊均未出现任何毒副作用。 相似文献
5.
１９９２年冷季（２～４月），在大通种牛场对海福特×黄牛×牦牛幼龄公牛进行６１天饲喂尿素试验。在白天放牧、早晚单槽拴系补饲，每日每头补饲１．５ｋｇ干草，０．５ｋｇ精料的条件下，试验组（５头）每日每头补喂尿素５０ｇ（分早晚两次），对照组（５头）不喂尿素。试验结果：试验组平均日增重２３７．７ｇ，对照组为－１１．５ｇ，两组差异极显著。 相似文献
6.
西杂牛连续埋植“畜大壮”效果观察 总被引：1，自引：1，他引：0
本试验对甘肃河西地区西杂１－２岁和周岁以下的犊牛连续用促生长剂“畜大壮”分阶段进行耳根埋植,试验结果表明,４－６月龄犊牛全期１８０天,试验组增重和平均日增重分别为５．５ｋｇ和３０８．３３ｇ,试验组比对照组提高３７．２５ｋｇ和２０６．９４ｇ（Ｐ〈０．０１）,１－２岁牛全期１８０天,试验组平均增重和日增重分别为５６．４３ｋｇ和３１４．４９ｇ,试验缄比对照组分别提高３０．０３ｋｇ和１６６．８２ｇ差异显著 相似文献
7.
在青草期进行８８天放牦牛放牧加补饲精料试验。试验组和对照组分别有混合群牦牛１０３头，６２头，试验每日每头补饲混合精料０．２５ｋｇ。试验结果：２岁牦牛增重效果最好，增重率提高２０．１个百分点，３岁牦牛次之，增重率提高１４．５个分点，４岁牦牛最差，增重率４．０个百分点；在同，４岁牦牛差异不显著。 相似文献
8.
全牧制饲养闽南黄牛越冬效果试验 总被引：1，自引：1，他引：0
随要选择２周组闽南黄牛３６头，于当年１１月至翌年４月份分别用全牧制和传统饲养方式越冬，结果用全牧制越冬的闽南黄牛平均头增重４．１８ｋｇ，对照组平均头减重５．２２ｋｇ，相左９．４０ｋｇ；其中怀孕母牛和空怀母牛分别比对照组增加了１５．７０ｋｇ和１０．１３ｋｇ。３－５月龄犊牛试验组平均日增重为０．２８ｋｇ±０．０３ｋｇ，比对照组增加了１５５％；越冬期间的怀孕母牛，追踪其所生犊牛的平均初生重为１３．８０ｋ 相似文献
9.
８头４～５岁的役用秦川母牛按配对原则分为对照组和试验组。两组牛的精料配方基本相同，但试验组牛饲粮用７．７５％的鲁梅克斯Ｋ－１杂交酸模粉（以下简称鲁梅克斯Ｋ－１）代替对照组中同等重量的小麦麸；对照组牛的粗料全部用干玉米秸，试验组半用６０％干玉米秸和４０％的玉米秸＋鲁梅克斯叶混合青贮料。正试期２０ｄ。结果表明：试验组牛的平均日增重为 ０．７８７ｋｇ，对照组０．６９０ｋｇ，试验组较对照组牛日增重提高了 １４．０６％；每增重 １ｋｇ活重试验组牛消耗精、粗料分别为２．５４ｋｇ、５．２５ｋｇ，对照组半分别为２．９０ｋｇ、５．５０ｋｇ，试验组较对照组个节约精料０．３６ｋｇ、粗料０．２５ｋｇ；试验组每头牛毛盈利为７３．３４元，对照组５９．４０元，前者比后者提高经济效益２３．４７％。说明在役用母牛饲粮中，用鲁梅克斯粉代替精料中的小麦麸并用玉米秸＋鲁梅克斯混合青贮料能获得良好的生产性能和经济效益。 相似文献
10.
人工草地放牧云岭黑山羊效果观测 总被引：7，自引：3，他引：4
将云岭黑山羊从山区自然丛放牧条件下引入人工草地放牧饲养，采食习性由引进初期的喜食野生杂草逐步转变为喜食优良播种牧草，发挥了人工草地的巨大优越性；主要体现在成年羊在冬春枯草季节持续增重，从１９９８年１０月－１９９９年３月计６个月平均日增重公羊８０．３６ｇ，母羊４２．０９ｇ；羔羊初生重１．７４ｋｇ，１０５日龄断奶重１２．００ｋｇ，平均日增重９７．６７ｇ。 相似文献
11.
拉毛卓玛 《畜牧兽医科学(电子版)》2021,(5):21-22
藏羊是青海地区特有的牲畜品种,生活在高海拔气候严寒,生长条件恶劣的环境下。但由于青藏高原冬季枯草期漫长,在枯草期内牧草供给缺乏,造成藏羊的体重损失严重,甚至会影响藏羊的正常生长发育,引发藏羊死亡。为进一步验证冬季藏羊补饲的效果,于2018年10月15日至2019年5月30日,从青海省达日县的一个藏羊养殖场选择50头2岁的母羊作为试验对象,按照随机原则将其划分为试验组和对照组,每组25头,试验组羊群在进行传统放牧养殖的基础上每天补充青干草0.4 kg,混合精饲料0.1 kg,对照组藏羊按照常规放牧方式进行管理,并在试验前、试验中期和试验末期各进行称重,测量增重和增重率,研究结果表明,在寒冷季节放牧养殖模式下,通过对羊群进行适量的饲料补充能增加机体的营养供给,试验组羊群在试验中期、试验末期的平均增重量分别为2.78、3.64 kg,增重率分别为13.11%、16.32%,而对照组的平均增重量和增重率呈现负相关,由此得出冬季寒冷季节补充适量的饲料有利于藏羊安全越冬,并维持身体膘情。 相似文献
12.
毛学荣 《青海畜牧兽医杂志》2005,35(4):8-9
对欧拉型藏羊从初生到18月龄不同月龄体重、体尺的测定和分析表明,欧拉型藏羊在自然放牧、无补饲条件下,早期生长发育快,肉用体型较明显,10月龄体重接近40kg;6月龄后日增重随着月龄的增长呈递减趋势,10月龄以前生长发育性别间无显著差异;10月龄以后进入枯草季节,其生长发育基本处于停滞状态;18月龄时,公羊体重明显大于母羊,这与公羊在冬春季有少量补饲有直接关系。 相似文献
13.
The present study was conducted to determine the effects of supplementary feeds, oat hay (OH), highland barley straw (HBS) and multi-nutrient blocks supplementation (UMMB) on reducing liveweight losses of both yak cows and calves grazed on low quality pastures during cold season. The trials of OH and HBS supplementation were conducted by using completely random design on 104 yak cows between 6 and 12 years of age as the following treatments: pure grazing (41 animals, body weight 230±67 kg) as control (CK); grazing+1.5 kg DM of OH per head daily (30 animals, body weight 216±28 kg); grazing+1.5 kg DM of HBS per head daily (33 animals, body weight 221±34 kg). The trial of UMMB was conducted on three types of yaks, 1-year calves (8-12 months old, body weight 61.1±6.9 kg), 2-year calves (18-24 months old, 98.0±11.3 kg) and yak cows (164.5±27.1 (S.D.) kg) with 20 animals in control group (CK) and 20 animals in supplement group for each type by using completely random design as the following treatments: pure grazing for CK group; grazing+150, 250 and 500 g UMMB per day averagely for 1-year calf, 2-year calf and cow at night. The results indicate that the animals supplemented with oat hay received body weight gain (32±20.7 g day−1), while those supplemented with highland barley straw still suffered from body weight loss (−56.7±39.3 g day−1); UMMB supplementation can decrease the body weight loss by 109.7%, 86.6% and 63.4% for the 1-year calves, 2-year calves and yak cows, respectively, as compared with pure grazing. Around US$1.60 output can be achieved on the basis of US$1 input for UMMB supplementation in the farming systems of the 1-year calves, 2-year calves and yak cows, while US$1 input can produce US$1.55 and 1.14 output for OH and HBS supplementations, respectively, in yak cows' farming system. It can be preliminary concluded that UMMB supplementation was the most economic way to alleviate body weight loss of grazing yaks over cold season, and the higher productive returns were obtained from OH supplementation for grazing yak cows during winter/spring months. 相似文献
14.
通过采用犏牛、牦牛犊牛培育技术结合设施化养殖技术,研究不同的饲养方式对犏牛、牦牛生长发育、增重效果及屠宰率的影响,研究结果表明,采用犊牛培育技术,6月龄犏牛公犊牛和牦牛公犊牛的体高、体斜长、胸围、管围都有不同程度的增长,体重也明显增加,与对照组相比,差异显著(P<0.05);采用设施化养殖技术,犏牛设施组的总增重及平均日增重显著高于牦牛对照组,差异显著(P<0.05);牦牛设施组、犏牛对照组和犏牛设施组的总增重及平均日增重显著高于牦牛对照组,差异显著(P<0.05)。犏牛设施组胴体重及净肉重分别为138.27±3.17kg和113.29±2.87kg,屠宰率和净肉率分别为58.47%和47.91%,犏牛设施组屠宰率和净肉率显著高于犏牛对照组,差异显著(P<0.05);牦牛设施组胴体重及净肉重分别为99.09±2.35kg和79.83±1.91kg,屠宰率和净肉率分别为57.46%和46.29%,与牦牛对照组和犏牛对照组相比,牦牛设施组和犏牛设施组的屠宰率和净肉率显著高于牦牛对照组和犏牛对照组,差异显著(P<0.05)。采用犏牛、牦牛犊牛培育技术结合设施化养殖技术,犏牛、牦牛的生长发育速度显著提高,总增重、日增重、屠宰率和净肉率显著高于传统放牧条件下的犏牛和牦牛。 相似文献
15.
对“反刍畜营养菌剂”中的组成菌进行了研究，明确了各菌对大气氮的固定，对几种含碳物质的利用、纤维素的分解能力和对实验动物的毒力情况，通过口服菌剂，牦牛羊增重试验证实可以提高增重和在枯草期减少体重下降。对口服菌剂提高牦牛羊营养的机理进行了分析，其基本原理是：口服菌剂后提高细菌在瘤胃的作用固定大气氮，增加氮素营养，提高纤维素的分解利用，使瘤胃中的甲烷合成菌体，降低因气体排出造成的能量损失。 相似文献
16.
Forty-five male yaks (born April 2001) were studied to determine how seasonal changes on the Qinghai-Tibetan plateau affected BW and body composition. Thirty yaks were weighed monthly from birth to 26 mo of age to determine seasonal changes in BW. The remaining 15 yaks were allocated randomly to five groups (three yaks per group), designated for slaughter at 13, 15, 18, 22, and 25 mo to measure seasonal effects on body chemical composition. All yaks were grazed on the alpine-meadow grassland of the plateau without any supplementation. All BW and body composition data were calculated on an individual basis. Body weight and body composition data were both compared across seven growth periods spanning 2 yr and defined by season. From April (birth) to December 2001 of the first growing season, yak BW increased (P < 0.01); however, during the subsequent cold season (December 2001 to May 2002), BW decreased (P < 0.01). The second growing season ran from May 2002 (13 mo of age) to October 2002 (18 mo of age), and the second live weight-loss season ran from October 2002 until May 2003. The weight loss experienced by yaks during the first weight-loss season was 25.64% of the total weight gain in the first growing season. The weight loss experienced by yaks during the second weight-loss season was 29.73% of the total weight gain in the second growing season. Energy retention in the second growing season was 291.07 MJ, 50.8% of which was consumed during the subsequent cold season. Energy accumulation in the summer (from May to July) and fall (from July to October) of the second growing season did not differ (5.01 and 6.30 MJ/kg of EBW gain, respectively; P = 0.63). The energy mobilized during the second winter (from October 2002 to February 2003) was 16.49 MJ/kg of EBW, and in the second spring (from February to May 2003), it was 9.06 MJ/kg of EBW. These data suggest that the decrease in grazing yak BW during the first cold season is much less than during the second cold season, and that the energy content per unit of BW mobilized is greater (P = 0.02) in winter than in spring. Results from this study demonstrate highly efficient compensatory growth in grazing yaks following the first weight loss period during the first cold season. This benefit could be exploited by herders to improve yak production. Yaks may have developed a type of self-protection mechanism to overcome the long cold seasons in the Qinghai-Tibetan plateau. 相似文献
17.
[目的]冬春枯草季节,为研究在不同饲养水平下对6-9月龄BMY公牛增重性能的影响。[方法]以6-9月龄BMY公牛为育肥对象,5种育肥方式分别为：对照组全放牧不设补饲;试验1组采用放牧＋补饲1.0 kg精料;试验2组采用全舍饲（粗饲料自由采食,补饲1.0 kg/d精料）;试验3组采用全舍饲（粗饲料自由采食,补饲2.0 kg/d精料）;试验4组采用全舍饲（粗饲料自由采食,补饲3.0 kg/d精料）。[结果]表明：6-9月龄BMY公牛在冬季全放牧条件下育肥,体重不会增加反而会减少,平均日增重（ADG）为-178 g;在冬季放牧＋补饲1.0 kg精料的情况下,ADG为395 g;在舍饲＋1.0 kg精料、舍饲＋2.0 kg精料和舍饲＋3.0 kg精料的情况下,ADG分别达600 g7、28 g和1,023 g,补饲效果差异极显著（P〈0.01）,表明BMY牛在舍饲条件下生长更快,可获得更高的ADG。随着补饲日粮营养水平的提高,随着BMY牛日粮干物质采食量增加,说明补饲精料有利于粗饲料的摄入,从而增加ADG。[结论]冬春枯草季节补饲精料,无论放牧还是舍饲,6-9月龄BMY公牛均有较好的ADG,以舍饲加补饲精料的增重效果最为明显,可获得理想的经济收益。 相似文献
18.
果洛地区初生和1岁牦犊牛生长发育规律研究 总被引：2，自引：0，他引：2
对果洛地区1岁和当年生犊牛各7头，跟踪测定体重1年，结果：当年生犊牛体重呈平稳上升趋势，一年内增重44.61kg，1岁犊牛夏秋季生长较快，春季补偿生长迅速，科季体重有所下降，一年内增重42.06kg。 相似文献