| Autor: |
P.F. Santana, V.R. Rocha Júnior, F.P. Monção, J.R.M. Ruas, L.A. Borges, J.C.P. Ramos, F.F. Hora, M.C. Oliveira, E.C.J. Sales, C.C.S. Carvalho, M.D. Costa, M.F.P. Silva |
| Jazyk: |
English<br />Portuguese |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Vol 72, Iss 4, Pp 1469-1478 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
1678-4162 |
| DOI: |
10.1590/1678-4162-11659 |
| Popis: |
ABSTRACT The objective of this study was to evaluate the different lactation stages of F1 Holstein x Zebu cows on intake and digestibility of nutrients, nitrogen use efficiency, feeding behavior and performance. Thirty-six F1 Holstein × Zebu cows with initial body weight (BW) of 482±43kg were used. The early, mid and late lactation stages were characterized after 50±13, 111.5±11.75 and 183.0±17.5 days in milk, respectively. A completely randomized design with three lactation stages and 12 cows in each treatment group was used. Dry matter intake (P=0.01) was higher in late lactation. Milk yield (P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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