Annales De Biologie Animale Biochimie Biophysique最新文献_第10页

Effect of the donor on egg quality and transfer results 供体对卵子质量及移植结果的影响

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790922

J. Hahn, U. Schneider

{"title":"Effect of the donor on egg quality and transfer results","authors":"J. Hahn, U. Schneider","doi":"10.1051/RND:19790922","DOIUrl":"https://doi.org/10.1051/RND:19790922","url":null,"abstract":"Embryo transfer with high-producing animals as donors led to new problems. Optimal results depended on a strict preselection of donors. Animals with a) a critical anamnesis, b) a calving-superovulation interval of more than 90 days, or c) from herds with decreased fertility should be carefully evaluated prior to superovulation and embryo transfer. The advantage of preselected donors is that the proportion of morphologically damaged embryos is less and therefore the chance of misjudging embryo quality is lower. Even if the preselection of donors is possible, the use of high producing cows with critical anamnesis cannot be avoided in certain cases, especially if the owner wants to use such animals. A better selection of embryo viability might occur naturally if the embryos were recovered on days 10 to 12 instead of on day 7. However, the uterine conditions for embryonic survival worsen steadily after day 4. This embryonic loss cannot be tolerated, especially in very valuable cows. Also, tranfer results of 75 p. 100 or higher could apparently not be obtained with older embryos. The problems discussed force us to search for criteria other than morphological appearance for judging the viability of day 7 embryos.","PeriodicalId":7885,"journal":{"name":"Annales De Biologie Animale Biochimie Biophysique","volume":"94 1","pages":"1613-1617"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90700504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Absence de transformation bactérienne des acides biliaires chez la truite arc-en-ciel, Saimo gairdneri, élevée à 16°C 在16°C饲养的虹鳟鱼Saimo gairdneri胆汁酸没有细菌转化

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790307

E. Sacquet, R. Lésel, C. Méjean, M. Riottot, C. Leprince

引用次数: 10

Etude cytophotométrique de l'ADN et des nucléoprotéines des spermatozoïdes du bélier : influence du séjour dans les voies génitales de la brebis 绵羊精子dna和核蛋白的细胞光度学研究:在母羊生殖道停留的影响

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19791017

J. Nicolle, C. Esnault, M. Courot

{"title":"Etude cytophotométrique de l'ADN et des nucléoprotéines des spermatozoïdes du bélier : influence du séjour dans les voies génitales de la brebis","authors":"J. Nicolle, C. Esnault, M. Courot","doi":"10.1051/RND:19791017","DOIUrl":"https://doi.org/10.1051/RND:19791017","url":null,"abstract":"Ejaculated ram spermatozoa were microspectrophotometrically observed as such (controls) or after incubation in the female genital tract (2 to 24 hrs). The nuclear DNA content, measured with UV light, did not significantly differ whether the spermatozoa were incubated in utero or not. However, quantitative measurements of various components, carried out with visible light on specifically stained cells, indicated that the sperm staining abilities were different. The Feulgen DNA increased in 60 p. 100 of the sperm samples incubated in utero. After the longest incubation periods, this was especially evident in 7 out of 8 ewes and 10 out of 10 ewes after 22 and 24 hrs, respectively. In these cases, the mean values for Feulgen DNA extinctions were increased by 21 and 29 p. 100. Most of the in utero-incubated samples (19/21) had the highest extinction values when stained with Fast Green for arginine-rich basic proteins. The nuclear area of in utero-incubated sperm was increased as compared to the non-incubated one. This increase was especially evident after an 18 to 24 hrs incubation. Differences in staining ability would be due to modifications in chromatin structure. The significance of these changes in relation to the preparation of spermatozoa for fertilization has been discussed. The appearance of abnormalities on some spermatozoa, seen after staining with Fast-Green, might indicate a deleterious effect of the uterine environment on already altered spermatozoa.","PeriodicalId":7885,"journal":{"name":"Annales De Biologie Animale Biochimie Biophysique","volume":"20 1","pages":"1817-1826"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75795159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Steroïd production by bovine follicles in vitro : influence of size, stage of cycle and culture system Steroïd牛卵泡体外生产:大小、周期阶段和培养体系的影响

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790915

T. Kruip, S. Dieleman, R. Moor

{"title":"Steroïd production by bovine follicles in vitro : influence of size, stage of cycle and culture system","authors":"T. Kruip, S. Dieleman, R. Moor","doi":"10.1051/RND:19790915","DOIUrl":"https://doi.org/10.1051/RND:19790915","url":null,"abstract":"Non-atretic bovine follicles of varying sizes and obtained at different stages of the oestrous cycle were cultured for 24 hrs, (1) on grids in a conventional static system, (2) in rolling tubes or (3) in a continuous flux system ; after culture steroids were determined in the culture media. For comparative purposes determinations were also made of the profile of steroids secreted into the follicular fluid by follicles in vivo. Small (2.0-5.0 mm in diameter) sized follicles in vivo secreted high levels of testosterone, lower amounts of progesterone and little amounts of cestradio)-17p into the follicular fluid. The profile of steroids secreted by this class of follicles in vitro depended upon the culture system used. In the static and rolling tube systems the small sized follicles secreted steroids in a pattern similar to that in the follicular fluid in vivo in this respect that testosterone is the main steroid secreted. An entirely different pattern, dominated by high cestradiol-17P levels, was produced when these follicles were cultured in the continuous flux system. Medium (5.1-8.0 mm in diameter) sized follicles in vivo secreted nearly equal amounts of the three steroids mentioned. Also in this class of follicles the steroid production in vitro","PeriodicalId":7885,"journal":{"name":"Annales De Biologie Animale Biochimie Biophysique","volume":"251 1","pages":"1537-1545"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75078146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Modifications in the plasma membrane of elongated ram spermatids : A cytochemical study 伸长公羊精细胞质膜的修饰:细胞化学研究

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790701

J. Courtens

引用次数: 2

The human ovary during puberty 青春期的卵巢

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790906

J. Grinsted, H. Peters

引用次数: 7

A. Recherches anatomopathologiques chez le rat ingérant différentes doses d'huile d'arachide ou d'huile de colza à faible teneur en acide érucique (Huile de colza Primor). 5a. Etude histologique du myocarde A.大鼠摄入不同剂量花生油或低芥酸菜籽油(菜籽油)的解剖病理学研究。5a。心肌的组织学研究

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790406

R. Cluzan, M. Suschetet, G. Rocquelin, R. Levillain

引用次数: 9

Evaluation du comportement alimentaire maternel. Ses conséquences sur le poids fœtal 母亲进食行为的评估。它对胎儿体重的影响

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790202

R. Frydman, Berardi Jc, M.-N. Bachelier, A. Spira, É. Papiernik

引用次数: 0

Fuel metabolism in the mammalian fetus 哺乳动物胎儿的燃料代谢

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790206

J. Girard, E. Pintado, P. Ferré

{"title":"Fuel metabolism in the mammalian fetus","authors":"J. Girard, E. Pintado, P. Ferré","doi":"10.1051/RND:19790206","DOIUrl":"https://doi.org/10.1051/RND:19790206","url":null,"abstract":"The mammalian fetus receives energy fuels from its mother through the placenta. The placental transfer of substrates depends upon the placental permeability to the substrate and upon the difference of concentration of the substrate in maternal and fetal blood. The fetus uses the substrates for 3 purposes : synthesis of new tissues (growth), oxidative metabolism and building of energy stores. Since the 02 consumption per Kg of body weight is relatively constant among the different species, the partitioning of substrates in anabolic and catabolic pathways is related to the rate of fetal growth. Glucose and lactate account for a large part of the oxidative needs of the fetus, but amino acids catabolism plays also an important role. During maternal starvation, ketone bodies can be used as oxidative substrates by the fetus of monogastrics. The fetus has a low capacity to oxidize free fatty acids, even in species in which the placental transfer of these substrates occurs rapidly. Free fatty acids are used as precursors of complex lipids or are stored in fetal adipose tissues or liver. Several recent observations suggest that gluconeogenesis could occur in the fetus of ruminants, and thus could allow the transformation of lactate and amino acids into glucose before utilization by individual tissues of the fetus (brain, skeletal muscle, heart). The hormones secreted by the fetus has been shown to play an important role in inducing the storage of glycogen in fetal liver (glucocorticoids and a pituitary hormone) and the accumulation of triglycerides in fetal adipose tissue (insulin).","PeriodicalId":7885,"journal":{"name":"Annales De Biologie Animale Biochimie Biophysique","volume":"1097 1","pages":"181-197"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76730411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 25

H-Y antigen in the mammalian female 哺乳动物雌性体内的H-Y抗原

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790806

S. Wachtel

引用次数: 4