规模化母牛养殖场繁殖成活率提升的技术措施研究

随着我国对进口牛肉不断开放,未来的牛养殖业必将进入"全球化竞争"时代,我国畜牧业跟随时代一起进步。目前,我国母牛繁殖率以及犊牛成活率普遍较低,畜牧业市场为了改变现状,对于规模化养殖场的建立与完善十分重视。本文主要对影响母牛繁殖率与犊牛成活率等的因素进行分析,并提出提高母牛养殖场繁殖成活率的针对性技术措施。     

提高母牛繁殖性能的饲养管理措施

判断母牛的繁殖能力,主要是对犊牛成活率以及受胎率进行综合分析,母牛的品种特性以及其发情期的管理是决定其受胎率的重要因素,而犊牛的成活率则与孕期母牛的饲养条件、营养供应以及卫生管理条件等有非常密切的关系.因此,养殖场需要认识到母牛繁殖效能提升的重要性以及相关措施,科学完善饲养管理,优化母牛养殖品质.     

提高肉用牛基础母牛繁殖成活率的措施

在分析肉用牛基础母牛繁殖成活率对肉牛生产的影响,以及影响母牛繁殖成活率因素的基础上,总结国内外的成功经验,从品种选育、繁殖控制、饲养方式转变、牛群结构调整、繁殖疾病的预防和犊牛的定向培育等6个方面,提出了提高母牛繁殖成活率的具体措施,从而为稳定肉牛繁育基地的生产提供参考。     

提高我国黄牛繁殖力的综合技术措施

提高黄牛繁殖力,是促进我国养牛业发展的主要措施.本文主要通过母牛饲养管理、选优淘劣、增加母牛比例、及时治疗黄牛产科疾病、通过及早对犊牛断奶而促母牛发情、掌握发情时间、及时进行人工授精、通过提高产犊率和犊牛成活率等一系列的综合技术措施,提高黄牛的繁殖力,同时对牛繁殖上的一些新技术进行介绍.     

母牛带犊繁育技术

母牛带犊繁殖技术是由受体母牛哺乳产后犊牛,犊牛断奶后,通过科学的饲养管理,对受体母牛进行营养调控和繁殖系统护理,尽快恢复母牛的繁殖功能,以继续进行胚胎移植孕育犊牛。采用母牛带犊繁育技术饲养母牛和初生犊牛,对母牛的整个生殖过程及犊牛的生长进行专业的饲养管理及营养调控,显著降低了犊牛饲养成本,降低母牛的难产率和助产率,提高了受体母牛的繁殖效率和犊牛日增重和成活率。     

冬季如何提高母牛“三率”

我们从2005年到现在采取冬季冷配,犊牛早期断乳与母牛补饲,对母牛繁殖疾病的治疗,标准化生产等四项技术综合配套的方法来提高提高母牛的受配率、受胎率、繁殖成活率,来保证黄牛的质量,同     

规模化母牛养殖场繁殖成活率提升的技术措施

随着母牛养殖规模化程度的提高,规模化母牛养殖场繁殖问题亟显突出。本文拟从能繁母牛体况评分、分群管理、发情鉴定、人工授精、妊娠诊断、围产期饲养管理、犊牛护理、繁殖计划以及消毒和防疫方面技术要点进行分析,提高能繁母牛繁殖成活率,提升犊牛的质量,促进国内肉牛产业的健康可持续发展。     

浅议提高甘南牦牛繁殖效率的综合措施

甘南牦牛是当地特有畜种,是甘南州牧区重要的生产生活资料。牦牛的繁殖成活率是牦牛养殖业发展和提高广大农牧民收入的重要一环。本文从母牦牛群的年龄结构、参配母牛的饲养管理、母牛怀孕阶段饲养管理、配种期的优化管理等方面综述了提高牦牛繁殖成活率的措施,旨在为牦牛养殖和改良提供参考。     

通辽市牛繁殖成活率调查研究报告

<正>内蒙古通辽市是全国闻名的养牛大市,但由于受传统养牛生产方式的影响,牛繁殖成活率较低。为摸清造成牛繁殖成活率低的原因以及给出提高牛繁殖成活率措施,笔者于2014年9月份,深入养牛生产第一线,进行了本次调研。1调查对象、地点1.1调查对象中国西门塔尔牛(草地类型群,下同)基础母牛712头和黑白花适龄母牛365头。1.2地点科尔沁区、科左后旗、科左中旗、扎鲁特旗     

牛的繁殖技术问答(一)

目前,养牛(役牛、肉牛)特别是养繁殖母牛的农牧民和专业户增多,有的已发展到一定的规模。在繁殖母牛的饲养过程中,有的对牛的繁殖技术和知识了解掌握得不多或不太清楚,影响了母牛的配种率、受胎率和产仔成活率。春季至夏初是母牛发情排卵配种怀胎的旺季,为提高“三率”,现将牛的繁殖技术和知识用问答的形式介绍给大家。     

晋南牛饲养管理配套技术推广

“晋南牛饲养管理配套技术推广”是山西省科委１９９９年度下达“山西省农村技术承包”项目，其目的是针对我区广大农户养牛饲养管理粗放、商品牛出栏率低、产肉率低、母牛繁殖成活率低、经济效益差等缺点，通过采用肉牛杂交改良，改良肉牛饲养管理、加强母牛饲养营养、犊牛培育、秸杆氨化、放牧牛冬春补饲等配套技术，达到提高养牛业科技含量，增加养牛业经济效益的目的。     

早期断奶后备母牛繁殖效果研究

选择后备母牛１８头，每组各６头，采用不同的日粮饲喂，进行对照试验，结果试验１组后备母牛初情月龄平均为１０．３个月，第一、二情期受胎率８３．３％，繁殖成活率８３．３％。试验２组后备母牛初情期平均为１１．１个月，第一、二情期受胎率６６．７％，繁殖成活率６６．７％。对照组后备母牛初情期平均为１２．７个月，一、二情期受胎率５０．０％，繁殖成活率５０．０％。     

Effect of antiparasitic treatment in beef replacement heifers

Two studies were conducted in western Canada to evaluate the impact of antiparasitic treatment on weight gain and reproductive performance in beef replacement heifers from weaning to first breeding. Treatment of heifers at weaning with ivermectin increased the rate of weight gain in comparison to treatment with fenthion. The feed efficiency of ivermectin-treated animals was also significantly better than those treated with fenthion. Increased weight was associated with an increased number of animals in estrus at the end of the feeding period for heifers receiving ivermectin. We concluded that treatment with ivermectin improved feed efficiency and weight gain in heifers from weaning to breeding. In turn, this weight gain appeared to be associated with an increased number of heifers in estrus.     

白色獭兔R新品系生长发育及繁殖性能研究

美系獭兔的繁殖性能强，生长速度慢，饲养周期长，养殖成本高。德系獭兔生长速度快，繁殖性能差，成活率低，养殖效益低。针对美系獭兔和德系獭免的生长和繁殖特点，应用现代遗传育种理论和技术，对关系白色獭兔和德系白色獭免进行杂交育种，采用群体继代选育法，进行闭锁繁育，进一步固定优良性状。经过连续五个世代的选育，培育出生长速度快、繁殖性能强、成活率高、遗传性状稳定的白色獭兔R新品系。并对其繁殖及生长发育性能进行测定，为獭兔的品种选育提供理论依据。     

杂交奶水牛犊牛培育关键技术

通过实施杂交奶水牛犊牛和后备牛早期培育,可有效缩短后备母牛饲养期,提早进行配种产犊,延长奶水牛使用年限,降低养殖成本,提高生产效益。本文介绍了犊牛早期断奶的优点、方法以及后备牛的培育目标和技术要点及关键技术措施等。     

金华市奶牛饲养方案的调查研究

本文通过对市郊奶牛场奶牛饲养方案的抽样调查与分析,得出可按奶牛的生理特点和泌乳曲线配制日粮、推广“全混合日粮”、精心管理等一系列技术措施,从而提高奶牛的产奶量和乳品质。     

Factors Affecting the Readiness and Preparation of Replacement Heifers in Tropical Breeding Environments

The future of beef cattle production in tropical regions is uncertain because of land tenure concerns, threatening the survival of extensive management programmes in these areas of the world. The need to intensify production systems will inevitably lead to changes in the management of replacement animals in existing herds. The present review underlines the main constraints, which in the past could be resolved by the sheer numbers of animals present in beef cattle operations, with replacements reliant only on finding enough heifers to substitute the adult females destined for culling. This scenario is rapidly changing as beef cattle units in tropical regions subdivide to share out the land between as many farmers as possible. Consequently, issues such as the efforts needed to manage the pregnant cow, particularly her nutritional status and its effect on the new‐born calf, the future replacement heifer growing in the presence of the dam, weaning management and procedures required before a heifer can be introduced into a breeding programme, need to be adequately and efficiently addressed by farmers in tropical regions.     

Effect of rate and time of gain after weaning on the development of replacement beef heifers

Three experiments were conducted during three consecutive years to compare rate and time of gain of weaned heifer calves on growth, reproductive development and future calf production. Three groups of Angus X Hereford heifers were fed in one of the following regimens from 45 d after weaning until breeding: (1) no gain the first one-half of the development period followed by .91 kg x head-1 x d-1 gain the last one-half; (2) .45 kg x head-1 x d-1 gain the entire trial and (3) .91 kg x head-1 x d-1 the first one-half of the development period and no gain the last one-half. The same diet was fed to all heifers, but the intake was varied to meet weight gain requirements. Wither height and heart girth increased (P less than .05) during the periods the heifers were fed to gain weight. By the end of the feeding trials, there were not differences (P greater than .05) in any of the growth measures. There were no differences (P greater than .05) in age at puberty, conception rate or calf production the following year. Adequate growth and development of replacement heifers is necessary, but much latitude exists in the rate and time of growth between weaning and breeding.     

皮埃蒙特肉牛改良晋南牛效果报告

晋南牛通过皮埃蒙特肉牛杂交改良后，其皮晋后代具有生长发育快、出肉率高、肉品质好、经济效益显著等特点，与其它杂交肉牛相比优势明显，该肉牛品种是杂交改良晋南牛的首选优良品种。