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Reducing milking frequency in early lactation improved the energy status but reduced milk yield during the whole lactation of primiparous Holstein cows consuming a total mixed ration and pasture
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Capelesso, Alsiane Simone
Kozloski, Gilberto Vilmar
Mendoza Aguiar, Alejandro
Pla Tejera, Marcelo
Repetto, José Luis
Cajarville, Cecilia
Kozloski, Gilberto Vilmar
Mendoza Aguiar, Alejandro
Pla Tejera, Marcelo
Repetto, José Luis
Cajarville, Cecilia
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VACAS LECHERAS
PRODUCCION LECHERA
LACTANCIA
ALIMENTACION DE LOS ANIMALES
RACION MIXTA TOTAL
PRODUCCION LECHERA
LACTANCIA
ALIMENTACION DE LOS ANIMALES
RACION MIXTA TOTAL
Año de publicación:
2019
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Resumen:
To investigate the immediate and long-term performance effects of milking frequency during early lactation of primiparous dairy cows consuming a total mixed ration and pasture, 20 Holstein cows were assigned in a randomized block design to either once-daily (1×) or twice-daily (2×) milking during the first 8 wk of lactation (treatment period). After the treatment period, all cows were milked 2× until wk 43 of lactation. Cows were fed a total mixed ration (approximately 15 kg of DM/cow per day) and allowed to graze an oat pasture (Avena sativa). Dry matter intake was 19.1 kg of DM/cow per day on average and was not affected by treatments. Milk yield was 40% lower in cows milked 1× during the treatment period, and a carryover effect existed until wk 21 of lactation, resulting in a final reduction of 15% of milk yield in the whole lactation. Milk lactose concentration decreased, whereas fat and protein concentrations increased for cows milked 1×. Mobilization of energy reserves during the treatment period occurred in both groups, but cows milked 1× showed greater body condition score and greater backfat thickness. In conclusion, milking 1× during the first 8 wk of lactation resulted in immediate and carryover negative effects on milk and milk solid yield without affecting feed intake, resulting in the improved energy status of primiparous dairy cows.
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Journal of Dairy Science, 2019, 102(10), 8919–8930
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Capelesso, A, Kozloski, G, Mendoza Aguiar, A, Pla Tejera, M, Repetto, J y Cajarville, C. Reducing milking frequency in early lactation improved the energy status but reduced milk yield during the whole lactation of primiparous Holstein cows consuming a total mixed ration and pasture. Journal of Dairy Science. [en línea] 2019, 102(10), 8919–8930
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Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)
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| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| C9.pdf | — | 1.11 MB | Adobe PDF |