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Oltenacu, Pascal Anton
Cornell Emeritus Professor
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Research
research overview
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- dairy cattle management
- statistical and quantitative genetics
- LEARNREPRO, developed to increase dairy reproductive problem-solving skills. LEARNREPRO consisted of three modules (ESTRUS-DETECTION, REPRO- MEASURES, USE-OF-RECORDS) coded using cT, a specialized programming language
- New computer instruction program, REPRO MANAGER. The program consists of an introduction, goals of reproductive performance, example farms, and tools to improve dairy herd reproduction
keywords
- animal breeding and genetics
- dairy sheep
- equine genetics
- health and fertility in dairy cattle
submitted impact statement
Publications
individual publications
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academic article
- Effect of prolactin, β-lactoglobulin, and κ-casein genotype on milk yield in East Friesian sheep. Journal of Dairy Science. 93:1736-1742. 2010
- Fertility responses of Mexican Holstein cows to US sire selection. Journal of Dairy Science. 89:2755-2760. 2006
- Effects of diseases on reproductive performance measures in Swedish Red and White dairy cattle. Preventive Veterinary Medicine. 66:113-126. 2004
- Predicting nutritional requirements and lactation performance of dual-purpose cows using a dynamic model. Agricultural Systems. 80:67-83. 2004
- Genotype by environment interaction for yield and somatic cell score with alternative environmental definitions. Journal of Dairy Science. 86:2470-2479. 2003
- Effect of herd environment on the genetic and phenotypic relationships among milk yield, fertility and somatic cell score in Holstein cattle. Journal of Dairy Science. 83:807-814. 2000
- Genetic analysis of Holstein cattle populations in Brazil and the United States. Journal of Dairy Science. 83:2963-2974. 2000
- Interactions between milk yield of Holstein cows in Mexico and the United States. Journal of Dairy Science. 82:2218-2223. 1999
- Assessment of the dairy production needs for cattle owners in southeastern Sicily. Journal of Dairy Science. 81:2510-2517. 1998
- Cheddar cheese: Influence of milking frequency and stage of lactation on Composition and Yield. Journal of Dairy Science. 80:437-446. 1997
- Influence of milking three times a day on milk quality. Journal of Dairy Science. 80:427-436. 1997
- Relationships between energy balance and postpartum ovarian activity and fertility in first lactation dairy cows. Journal of Animal Science. 62:17-23. 1996
- Efecto del nivel de producción de leche sobre la duración de vida productiva de ganado Holstein de registro en México. Tec. Pecu. Mex.. 32:105-112. 1994
- LEARNREPRO: A computer-assisted training program for teaching dairy reproductive management. Journal of Dairy Science. 75:2288-2293. 1992
- Comparative economic returns from artificial insemination and natural service in straightbred and crossbred Holstein herds in Venezuela. Journal of Dairy Science. 74:665-677. 1991
- Modeling parasite control programs for developing nations using goal programming. Journal of Agricultural Production. 4:33-38. 1991
- Comparative profitability of purebred and crossbred Holstein herds in Venezuela. Journal of Dairy Science. 73:2190-2205. 1990
- Economic returns from US artificial insemination sires in Holstein herds in Colombia, Mexico, and Venezuela. Journal of Dairy Science. 73:2179-2189. 1990
- Net margins predicted from different fractions of Holstein genes in an upgrading program for Venezuela. Journal of Dairy Science. 73:2952-2964. 1990
- Evaluation of on-farm milk progesterone tests to determine non-pregnant cows and to prevent insemination errors. Journal of Dairy Science. 72:2718-2727. 1989
- Factors Associated With Seasonality of Milk Production in New York State. Journal of Dairy Science. 72:1072-79. 1989
- Heritabilities of and genetic correlations among six health problems in Holstein cows. Journal of Dairy Science. 72:180-186. 1989
- The Effects of Alternative Seasonal Price Differentials on Milk Production in New York. Northeastern Journal of Agricultural and Resource Economics. 17:46-55. 1988
- Path model of reproductive disorders and performance, milk fever, mastitis, milk yield, and culling in Holstein cows. Journal of Dairy Science. 68:3337-3349. 1985
- Path model of reproductive disorders and performance, milk fever, mastitis, milk yield, and culling in multiparous cows. Journal of Dairy Science. 68:3337-3349. 1985
- Growth and feed efficiency of cattle of different mature sizes. Journal of Animal Science. 53:354-362. 1981
- The potential for grass-fed livestock: resource constraints. Science. 207:843-848. 1980
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conference paper
- Heterogeneous genetic variances of dairy cow performance in Sicilian environments. Proc. 7th World Cong. Gen. Appl. Livest. Prod. Communication. 2002
- Genetic relationships for milk and fat between Holstein populations in Brazil and the United States. Proc. 6th World Cong. Gen. Appl. Livest. Prod.. 323-326. 1998
- Estimation of the effect of clinical mastitis on milk yield using a test day model. Proc. 5th World Congress on Genetics Applied to Livestock Production. 124. 1994
- Strategies for genetic improvement in the physical and economic context of tropical environments. Proc. Strategies and Systems of Bovine Improvement in the Tropics. 113-125. 1990
- Reproductive disorders: incidence, effect on reproductive performance and cost. Proc. Dairy Days. 19-25. 1985
- A new approach for solving group feeding problems in large dairy herds. Proc. Cornell Nutrition Conference for Feed Manufacturers. 48-53. 1980
- Compartmental analysis of the rate of passage of digesta through the gastrointestinal tract in dairy cattle fed at two levels of intake. Proc. American Dairy Science Association 74th Annual Meeting. 234. 1979
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document part
- Distance education in animal breeding: A Cornell experience. 59. 1998
- Distance education in animal breeding: A Cornell experience. 59. 1998
- Estimates of (co)variances for first lactation milk and fat yields of Holstein cows in the U.S. and Brazil. 64. 1998
- Influence of 3 times a day milking on milk quality. 21. 1994
- Influence of 3 times a day milking on milk quality and udder health. 88. 1994
- Influence of 3X milking and stage of lactation on fat and nitrogen recoveries and Cheddar cheese yields. 5. 1994
- A user friendly computer instruction program addressing the use of prostaglandin in dairy herd reproductive management. 285. 1993
- Body condition change and its association with production and fertility in first lactation Holstein cows. 167. 1992
- Optimal Nutritional Management of Dual Purpose Herds in Tropical Latin America 1990
- The optimum time of conception for Holstein cows: An economic analysis. 37. 1985
- Teaching beef cattle feedlot management with a stochastic microcomputer program 1981
- The incidence of reproductive disorders and their effects on reproductive performance. 205. 1981
- Relating milk production to measures of reproductive performance of the dairy cow. 223. 1979
- Dynamic simulation of milk quantity and quality in lactating dairy cows under different feeding strategies 1978
Background
educational background
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- Ph.D., University of Minnesota