LRH-3、PMSG、HCG对人工授精母蓝狐产仔效果影响的比较(Ⅲ)

通过PMSG +LRH - 3和PMSG +HCG的组合使用 ,结果表明 ,使用PMSG +LRH - 3的试验组母狐的产仔率比对照组提高了 2 0 % ,胎平均产仔数提高了 0 2只。而使用PMSG +HCG组合母狐的产仔率与对照组相同 ,但胎平均产仔数提高了 0 5只。     

LRH-3、PMSG、HCG对人工授精母蓝狐产仔效果影响的比较(Ⅰ)

分别使用LRH 3、PMSG和HCG对母蓝狐产仔效果进行比较试验 ,结果表明 ,LRH 3和PMSG均可提高人工授精母狐的产仔率和胎产仔数 ,而HCG的作用效果不佳。     

不同外源激素处理乏情母猪效果对比试验

选取胎次相近的长大乏情母猪120头,随机分为4组,每组30头,在断奶后20天各组分别注射氯前列烯醇、孕马血清促性腺激素（PMSG）、 PG600和律胎素。结果表明,考察的5个指标中,律胎素处理组母猪有4个指标即发情率、受胎率、有效率和产仔数高于其他三个处理组,但平均发情间隔时间较长。 PG600除了受胎率外,其余各个指标均高于PMSG 和氯前列烯醇处理组,但受胎率与其他各组差异不明显。可见,针对本试验猪场的乏情母猪,律胎素和 PG600是较理想的外源催情激素。     

手术挤破法与激素结合治疗奶牛黄体囊肿

分别采用给试验母牛注射氯前列烯醇,手术挤破法及手术挤破与氯前列烯醇结合进行奶牛黄体囊肿治疗试验。结果表明,手术挤破与氯前列烯醇配合治疗奶牛黄体囊肿具有较好的作用,其治疗效果均优于单独注射氯前列烯醇和手术挤破法。手术挤破法与氯前列烯醇结合治疗奶牛黄体囊肿治愈率高达90%,受3胎率达到80%,效果十分明显。     

不同剂量氯前列烯醇对母兔同期发情效果的研究

本试验以42 d繁殖模式为基础,在人工授精前48 h分别给母兔注射不同剂量(0、10、20、30和40 μg)的氯前列烯醇(cloprostenol,CLO)以进行同期发情,并进行产仔率、产仔总数、产活仔数、活窝重、仔兔个体重及雌激素、孕激素等指标检测。结果显示,与对照组相比,注射不同剂量CLO的母兔产仔率都有极显著的提高(P<0.01),且产仔率随注射剂量的增加呈递增趋势;但各组中母兔产仔总数无显著变化(P>0.05)。激素测定结果显示,注射CLO后雌激素水平逐渐上升,且上升的幅度随剂量的增加而加大;注射10、20和40 μg CLO 24和48 h后,孕激素浓度显著降低(P<0.05)。因此,采用氯前列烯醇对母兔进行同期发情,可有效促进母兔的发情,进而提高母兔产仔率和生产效率。     

怎样才能提高母猪产仔率

<正>母猪产仔率涉及两项内容,一是母猪胎产仔数(健仔数),二是母猪年产窝数。为此,要提高母猪产仔率必须从这两方面着手解决。多年现场实践经验表明,这是提高养猪三率(母猪产仔率、仔猪成活率、肥猪出栏率)的最重要的一个环节。在养猪实践中采用以下的技术措施使母猪平均胎产仔11~12头,年均产仔窝数可达到2.4     

应用氯前列烯醇诱导山羊多胎率的研究

为了增加养羊业的经济效益,以及医学、药学进行山羊动物试验的需要,必须提高山羊的繁殖效率,增加山羊怀孕的多胎率。为此作者特设计采用氯前列烯醇(Cloprostenol)对华东地区的山羊(江苏海门山羊)进行同步处理并配种以达到提高山羊的多胎率,提高山羊利用效率的目的。试验分成两组,氯前列烯醇诱导组(T)136头和非诱导组(UT)136头。结果显示,采用氯前列烯醇诱导的山羊(T)多胎率达到78.7%(107/136),怀孕羔羊数平均达到了2.01只/胎(273/136),而未采用氯前列烯醇诱导的对照组山羊(UT)的多胎率只有39.0%(53/136),怀孕胎数平均为1.31只/胎(179/136),两组之间差异极显著(P<0.01),氯前列烯醇处理组羔羊出生后生长、发育正常。本试验结果表明,通过氯前列烯醇诱导可以明显提高山羊的怀孕多胎率,对山羊优良品种的繁育、种群的快速扩繁及试验用山羊的研制等具有重要的经济价值和应用价值。     

在不同季节应用氯前列烯醇诱导断奶母猪发情的效果

选择2～4岁繁殖性能正常、体况中等的经产皖北黑猪44头,根据年龄和胎次均衡原则按2×2试验设计方案分组,分别比较4和8月份在断奶当天肌肉注射氯前列烯醇诱导发情效果。结果表明:在春季,进行氯前列烯醇处理断奶母猪效果不明显;在夏季,氯前列烯醇促使猪在断奶一周内发情配种率达87.5%,高于对照组14.2%(P>0.05),但均低于春季,且两个季节的对照组之间差异极显著(P<0.01)。母猪自断奶至发情间隔时间,氯前列烯醇处理在夏季为(6.1±0.3)d,显著低于对照组(P<0.05),但与春季相比无显著差异(P>0.05)。母猪在夏季的发情持续时间趋向延长(P>0.05)。季节内氯前列烯醇处理猪的分娩率高于对照组(P>0.05),窝产仔数无显著差异(P>0.05)。提示氯前列烯醇具有调节断奶母猪繁殖性能的低下作用,在夏季促使其发情,缩短断奶至发情间隔时间。     

情宝与外源激素对长白母猪繁殖性能的影响

为研究中药催情药以及外源性生殖激素对母猪繁殖性能的影响,试验利用中药催情药情宝以及外源生殖激素氯前列烯醇（PG）和促排卵素三号（LRH-A3）,对某猪场的48头纯种长白母猪进行催情试验。结果表明,情宝＋氯前列烯醇＋LRH-A3的催情效果最佳,其次是情宝＋LRH-A3以及情宝＋氯前列烯醇,而氯前列烯醇＋LRH-A3的效果最小。     

美国短毛黑水貂配种方式的对比试验

为了提高水貂繁殖力,试验研究了中国式和美国式两种配种方式对美国短毛黑水貂繁殖力的影响及中国不同配种形式对母貂繁殖力的影响.结果表明:中国式配种方式母貂受配率(99.8%)高于美国式(93.5%),但美国式配种方式母貂的其他繁殖性能(产仔率95.4%、胎平均产仔数5.71只、仔貂成活率93.9%和群平均育成数4.78只)优于中国式(产仔率81.4%、胎平均产仔数5.57只、仔貂成活率88.0%和群平均育成数3.98只);连续复配为中国式配种方式中主要的配种形式,在该形式下水貂繁殖力较高;美国短毛黑水貂配种期的体重指数在29～34 g/cm内,母貂产仔率最高达82.9%; 多数母貂妊娠期为41～50 d,其中妊娠期为41～45 d的母貂胎产仔数最高,为6.21只.     

不同外源激素组合对银狐繁殖力的影响

为了研究不同外源激素组合对银狐繁殖力的影响,随机选择健康母银狐50只,分为4个试验组和1个对照组,每组10只。在母狐排卵的前10 d开始对4个试验组注射外源激素,每组注射两种激素（第1激素和第2激素）,每组的第1激素和第2激素有所不同;对照组母狐按常规方式饲养管理。结果表明,试验1组（PMSG+HCG激素组）平均产仔数比对照组多1.3只/母,差异极显著（P＜0.01）;试验4组（FSH+LH激素组）平均产仔数比对照组多0.9只/母,差异显著（P＜0.05）;试验2组（三合激素+LRHA3激素组）、试验3组（LRHA3+LRHA3激素组）平均产仔数与对照组间无显著差异（P＞0.05）;试验1组与试验2、3组间差异显著（P＜0.05）,而与试验4组间差异不显著（P＞0.05）;试验2、3、4组间差异不显著（P＞0.05）。通过性价比对比,PMSG+HCG激素组合的性价比（0.078）为最高;而另外3组激素组合的性价比均较低。综上所述,PMSG+HCG激素组合平均产仔数多、激素性价比高,应用效果显著。     

降低仔狐早期死亡率的研究

仔狐早期（５日龄内）的死亡率最高,占哺乳期死亡数的４７％;占仔狐、育成狐死亡总数的４１％。本研究对北极狐初产雌狐实行短期环境监控,同时进行恢复或强化母性的调驯,连续５年产仔雌狐的母性行为正常,有效地扼制了仔狐的早期死亡,５日龄内仔狐的成活率平均达９８６８％,比对照组高２１６５％。     

The effect of Oestrophan Spofa (synthetic analog of prostaglandin F2 alpha) added to the insemination dose on pregnancy and fertility in sows

Laboratory trials were conducted to study the effect of various concentrations of cloprostenol on the motility and morphological changes of the acrosomes of boar spermatozoa. As found, a cloprostenol concentration of 250 ng per ml of semen to 2500 ng per ml of diluted semen has no adverse effect on the motility of spermatozoa and on the morphological changes of their acrosomes. The concentration of 5000 ng of cloprostenol (in the Oestrophan Spofa product) per 1 ml of diluted semen negatively influences the motility of spermatozoa. An insemination dose of 100 ml of diluted sperm treated with 500 ng of cloprostenol was used for the artificial insemination of 152 sows; 166 sows of the same farm inseminated with untreated semen were used as controls. No gilts were included in the trial. Out of the 152 test sows, 113 conceived after the first insemination, i.e. 74.35%, and the average litter size was 10.04 piglets. In the control group, 125 sows delivered their litters, i.e. 75.30% of the total number, the average litter size being 9.96 piglets. Comparing the reproduction parameters of the experimental and control groups it can be said that the treatment of an insemination dose with 500 ng of cloprostenol immediately before insemination had no influence on the pregnancy rate and on the size of litters.     

氯前列醇诱导夏河牦牛同期发情辅助繁殖

[目的]研究探讨氯前列醇诱导牦牛同期发情的效果。[方法]选择夏河县桑科种羊场母牦牛为试验牛,采用氯前列醇注射液诱导牦牛同期发情。通过统计阶段发情率及产犊率来判断生殖激素不同处理方式对牦牛辅助繁殖的影响。[结果]首次氯前列醇注射液肌注2 mL处理后,牦牛发情率及产犊率大于第2次氯前列醇注射液肌注3.2 mL处理及第3次氯前列醇注射液肌注3.2 mL处理。[结论]通过氯前列醇处理牦牛同期发情,提高首次处理的发情率可有效提高整体产犊率,生殖激素调控藏区牦牛同期发情来提高牦牛繁育率。     

聊城金桥蓝狐育种核心群选育研究

通过组建聊城金桥蓝狐核心群,采用等级选配、品质选配与亲缘选配等综合技术制定选育方案。经连续六个世代选育,成年种公狐体长（78.30±1.74）cm,体重（14.90±0.79）kg;成年母狐体长（65.22±1.24）cm,体重（8.49±0.32）kg。金桥蓝狐背中部被毛密度均在18000根/cm2以上,皮张尺码在000级以上占95.94%,平均产仔7.30±0.54只,断奶成活5.34±0.64只,仔狐断乳成活率70%以上。与F1相比,成年公狐体长提高11.22%（P〈0.01）,体重提高48.70%（P〈0.01）,成年母狐体长提高13.23%（P〈0.01）,体重提高22.16%（P〈0.01）,胎平均产仔降低3.95%,断奶成活降低4.47%。金桥蓝狐群体遗传性能稳定,体型外貌整齐一致,性状的变异较小。F6成年公狐体长、体重变异系数分别为2.0%和5.3%,成年母狐体长、体重变异系数分别为2.0%和3.8%。     

关于影响芬兰蓝狐冻精配种受胎的探讨

研究了芬兰蓝狐冻精解冻液不同解冻温度、不同解冻方法、输入有效精子数及卵泡发育不同阶段等对蓝狐受胎率的影响     

Retrospective analysis of the efficacy of different hormone treatments of cystic ovarian disease in cattle

Cystic ovarian disease in cows was treated either with a single intramuscular injection of 500 micrograms cloprostenol, a prostaglandin F2 alpha analogue, in 77 cases of luteal cysts or with 500 micrograms gonadorelin or 20 micrograms buserelin, gonadotrophin releasing hormone or its analogue (GnRH), in 116 cases of follicular cysts. Recovery was defined as the absence of cysts and the formation of a corpus luteum either with or without observed oestrus within 10 days after treatment with cloprostenol and 15 days after treatment with GnRH. Recovery occurred in 65 per cent and 52.6 per cent of cases, respectively, in average times of 4.9 and 19 days. Fifteen days after treatment with GnRH, 20 cows with luteinised cysts were treated with cloprostenol and 15 recovered in a mean of 20.4 days, while 10 which still had follicular cysts, were given GnRH and one recovered 31 days after the beginning of treatment. Another 27 cows, in which cysts became luteinised, were treated with cloprostenol seven days after treatment with GnRH to give quicker (average 11.5 days) but poor (48 per cent) recovery and with a higher rate (33 per cent) of recurrence of cysts. A progesterone releasing intrauterine device was used in 25 cases of cystic ovarian disease, some of which had been previously treated. Sixty-eight per cent recovered in an average of 15 days. The proportions of cows becoming pregnant to one to three inseminations after the different methods of treatment were similar (77 to 94 per cent).(ABSTRACT TRUNCATED AT 250 WORDS)     

Reference data on the anatomy and serum biochemistry of the silver fox

Clinically healthy silver foxes obtained from a closed colony were investigated for the purpose of establishing base-line data for this species. The anthropometry (body weight; body length; length and width of the head; width, depth, and circumference of the chest; length of the tail), anatomical measurements (weight; longitudinal and transverse length; thickness of the main organs) and serum biochemical assays (AST, ALT, ALP, LDH, CK, lipase, GGT, T-Cho, beta-Lipo, TG, Phos-Lip, Tp, T-Bil, UA, BUN, Crea, Glu, Ca, IP, Mg, Fe, Na, K, Cl, LDH and CK isoenzymes) were carried out. The data were presented as mean values with standard deviations, and compared with those of the dog. The coefficient of variation (CV) for each of the anthropometric parameters was low, except for that of female body weight for which the CV was 17%. The body size of the male was larger than the female, and the weights of the main organs, corresponding to body size, were greater than the female. The results were equivalent to those for a Beagle dog aged between 3 and 5 months. Significant differences between the sexes were detected in the following parameters: concentrations of BUN, beta-Lipo and T-Bil (p less than 0.01); concentration of Mg and Glu (p less than 0.05); activity of LDH and lipase (p less than 0.05). The biochemical data ware uniform with some exceptions. These were AST (142 IU/l) and ALP (122 IU/l) in a 5-year-old male fox, Glu (over 200 mg/dl) in four 2-year-old female foxes, CK (629 IU/l) in a 2-year-old female fox, and finally CK (366 IU/l) and lipase (428 IU/l) in an 8-year-old female fox, all of which were elevated. These data were similar to the reference values for the dog previously reported. The reference values presented in this report for the silver fox will be valuable as a guide for clinical diagnosis and research.     

维生素E对母蓝狐繁殖力的影响

为探索维生素Ｅ在母蓝狐繁殖中的适宜用量，本文对１９９７、１９９８两年的２３２只母狐添加不同量的维生素Ｅ，采用统计的方法进行了对比。结果表明，从１２月１０日开始至配种全部结束时停止，添加不同量的维生素Ｅ，对母蓝狐的繁殖有不同的影响，量大或量小都不利于繁殖，每日每只添加维生素Ｅ５０ｍｇ为宜。     

青海地区野生狐狸棘球绦虫感染情况调查研究

野生狐狸是棘球绦虫的主要终末宿主,在棘球蚴病的传播中有重要作用.为了解青海省狐狸中棘球绦虫感染状况,我们用棘球绦虫粪抗原检测试剂盒,对收集于青海省称多县、贵南县、祁连县的野生狐狸粪便进行了检测.结果表明,称多县收集的129份狐狸粪便阳性15份,阳性率11.6％;祁连县收集的84份狐狸粪便阳性3份,阳性率3.6％;贵南县...