Züchterische Probleme in der Fortpflanzung mit besonderer Berücksichtigung der künstlichen Besamung
暂无分享,去创建一个
[1] L. Bäckström,et al. TRANSLOCATION HETEROZYGOSITY IN A BOAR , 2009 .
[2] A. P. Schutte. Vibrio fetus infection in bulls. , 1970 .
[3] E. Müller. [Motility of spermatozoa as a genetic problem]. , 1967, Wiener tierarztliche Monatsschrift.
[4] Von E. Rosenhahn,et al. Die Genauigkeit von Ejakulatsuntersuchungen zur Bestimmung der Befruchtungsfähigkeit von Bullensperma , 1967 .
[5] D. Olds,et al. Sources of variance affecting dairy herd fertility and delayed returns to service. , 1966, Journal of dairy science.
[6] R. Everett,et al. Genetic Relationship Between Production and Breeding Efficiency , 1966 .
[7] G. Salisbury,et al. Nuclear Morphology of Spermatozoa from Inbred and Linecross Hereford Bulls , 1966 .
[8] E. Blom. A New Sterilizing and Hereditary Defect (the ‘Dag Defect’) located in the Bull Sperm Tail , 1966, Nature.
[9] A. Ødegård. A Study of Some Factors Affecting Reproductive Efficiency in Norwegian Red Cattle , 1965 .
[10] P. Shannon. CONTRIBUTION OF BINOMIAL VARIATION, TECHNICIAN, HERDS, AND COWS TO OBSERVATIONS BETWEEN COW VARIANCE OF CONCEPTION RATES. , 1965, Journal of dairy science.
[11] A. P. Labhsetwar,et al. Genetic and Environmental Factors Affecting Quiet Ovulations in Holstein Cattle , 1963 .
[12] A. P. Labhsetwar,et al. Analysis of Variation in Some Factors Affecting Multiple Ovulations in Holstein Cattle , 1963 .
[13] W. H. Stone,et al. Genetic Load Expressed as Fetal Death in Cattle , 1963 .
[14] R. Plowman,et al. Relationship Between Longevity and Production in Holstein-Friesian Cattle , 1963 .
[15] W. E. Collins,et al. Variation in Conception Rates of Guernsey Cattle , 1962 .
[16] W. E. Collins,et al. Effect of Age on Fertility of Bulls in Artificial Insemination , 1962 .
[17] W. Jones. Abnormal Morphology of the Spermatozoa in Guernsey Bulls , 1962 .
[18] S. R. Searle,et al. Heritability and Repeatability of Conception Rate of Bulls in Artificial Breeding , 1962 .
[19] L. E. Casida. Present Status of the Repeat-Breeder Cow Problem , 1961 .
[20] R. W. Touchberry,et al. Effects of Crossbreeding on Reproductive Performance of Dairy Cattle , 1961 .
[21] E. Inskeep,et al. Hereditary Variation in Conception Rate of Holstein-Friesian Cattle , 1961 .
[22] L. E. Casida,et al. Variation in Estrual Cycles of Holstein-Friesian Cattle , 1961 .
[23] L. E. Casida,et al. Genetic Factoes Affecting Conception Rate and Early Pregnancy Loss in Holstein Cattle , 1961 .
[24] M. H. Fohrman,et al. Factors influencing dairy cattle longevity. , 1960 .
[25] B. Larson. Significance of Strontium90 in Milk. II: A Review of Recent Data and Analysis of Areas Needing More Elaboration to Define the Role of Milk in the Diet , 1960 .
[26] R. W. Touchberry,et al. Associations Between Service Interval, Interval from First Service to Conception, Number of Services per Conception, and Level of Butterfat Production , 1959 .
[27] R. W. Touchberry,et al. Observations on the Degree of Expression of Estrus in Cattle , 1957 .
[28] H. J. Bearden,et al. Fertilization and Embryonic Mortality Rates of Bulls with Histories of Either Low or High Fertility in Artificial Breeding , 1956 .
[29] R. Foote,et al. The Bull as One Cause of Delayed Returns to Service in Artificial Breeding , 1952 .
[30] A. Chapman,et al. Factors Affecting the Incidence of Cystic Ovaries in a Herd of Holstein Cows , 1951 .
[31] D. Olds,et al. Repeatability of the Estrous Cycle Length in Dairy Cattle , 1951 .