Effect of heat stress during the dry period on milk yield and reproductive performance of Holstein cows

This study aimed to determine the influence of heat stress during the dry period on milk yield and reproductive performance of Holstein cows in a hot environment. Breeding and milk production records of cows, as well as meteorological data between 2017 and 2020 from a commercial dairy herd ( n  = 12...

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Veröffentlicht in:International journal of biometeorology 2024-05, Vol.68 (5), p.883-890
Hauptverfasser: Rodríguez-Godina, Iris J., García, José E., Morales, Juan L., Contreras, Viridiana, Véliz, Francisco G., Macías-Cruz, Ulises, Avendaño-Reyes, Leonel, Mellado, Miguel
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Sprache:eng
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Zusammenfassung:This study aimed to determine the influence of heat stress during the dry period on milk yield and reproductive performance of Holstein cows in a hot environment. Breeding and milk production records of cows, as well as meteorological data between 2017 and 2020 from a commercial dairy herd ( n  = 12,102 lactations), were used to determine the relationship between climatic conditions during the dry period (average of the temperature-humidity index (THI) at the beginning, middle, and end of the dry period) and reproductive efficiency and milk yield traits. THI was divided into  80 (severe heat stress). First-service pregnancy rate of cows decreased ( P  
ISSN:0020-7128
1432-1254
1432-1254
DOI:10.1007/s00484-024-02633-5