Condiciones climáticas y la producción láctea del ganado jersey en dos pisos altitudinales
| Autor: | Conejo-Morales, Juan Federico, WingChing-Jones, Rodolfo |
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| Jazyk: | Spanish; Castilian |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Agronomía Mesoamericana; Agronomía Mesoamericana: Vol. 31, Issue 1 (January-April); 157-175 Agronomía Mesoamericana; Agronomía Mesoamericana: Vol. 31, No. 1 (enero-abril); 157-175 Portal de Revistas UCR Universidad de Costa Rica instacron:UCR |
| ISSN: | 2215-3608 1021-7444 |
| Popis: | Introduction. Precipitation, temperature, radiation, and relative humidity vary according to height, this causes the presence of microclimates that affect the productivity of the animals. Objective. Associate the climatic conditions present in the productive systems with dairy production of a pure Jersey herd in two altitudinal floors of the province of Cartago, Costa Rica. Materials and methods. In retrospect, during the year 2016, the productive information of two dairy farms, located at 660 and 1800 m.a.s.l. was evaluated. From the first farm, the records of 61 animals in a twelve-year period (12,083 data) were analyzed; while in the second, the lactations of 387 animals in a five-year period (13,820 records) were analyzed. Observations included: identification of the cow, day of generation of the record, month, year, daily milk production, lactation days, calving number, animal age, temperature, precipitation, solar radiation and average relative humidity. Results. The lactation days, the lactation number (3-5), the age of the animal (3.7 to 5.8 years), and the calving number affected the daily milk production on both farms (p |
| Databáze: | OpenAIRE |
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