Female and Breed Associated with Seasonal Fertility Variation in Dairy Cattle
Open Access
- 1 September 1961
- journal article
- research article
- Published by American Dairy Science Association in Journal of Dairy Science
- Vol. 44 (9) , 1698-1704
- https://doi.org/10.3168/jds.s0022-0302(61)89942-6
Abstract
Dairy cows had a low breeding efficiency during the seasonal high environmental temperature in Arizona. Semen used from bulls collected in cooler climates (Palo Alto, California and Columbus, Ohio.) did not improve breeding efficiency, indicating that the female was the main contributor to seasonal depression. The Jersey breed is not subject to seasonal low breeding efficiency.Keywords
This publication has 14 references indexed in Scilit:
- Factors Influencing the Metabolic Activity of Bovine Spermatozoa. V. SeasonJournal of Dairy Science, 1959
- Nonreturn Rate of Artificially Inseminated Dairy Cows as Affected by Age of Semen, Breed of Bull, and SeasonJournal of Dairy Science, 1958
- Introduction to statistical inference.Published by American Psychological Association (APA) ,1957
- Prenatal Mortality in the Bovine between Pregnancy Diagnosis at 34-50 Days Post-Insemination and ParturitionJournal of Dairy Science, 1954
- Effects of Seasonal Climatic Changes on Certain Physiological Reactions, Semen Production and Fertility of Dairy BullsJournal of Dairy Science, 1953
- Seasonal Changes in Fertility of Dairy Bulls in Northwestern WashingtonJournal of Dairy Science, 1952
- Fertility Level in Artificial Breeding Associated with Season, Hours of Daylight, and the Age of CattleJournal of Dairy Science, 1947
- Seasonal Variations in Hours of Daylight Associated with Fertility Level of Cattle under Natural Breeding ConditionsJournal of Dairy Science, 1947
- Seasonal variation in the reproductive capacity of the bullThe Journal of Agricultural Science, 1945
- Seasonal Variation in Semen Quality of the Dairy BullJournal of Dairy Science, 1942