| Autor: |
Maria B. Bottini-Luzardo, Carlos F. Aguilar-Pérez, Fernando G. Centurión-Castro, Francisco J. Solorio-Sánchez, Juan C. Ku-Vera |
| Jazyk: |
English<br />Spanish; Castilian |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
Tropical Grasslands-Forrajes Tropicales, Vol 4, Iss 3, Pp 159-167 (2016) |
| Druh dokumentu: |
article |
| ISSN: |
2346-3775 |
| DOI: |
10.17138/tgft(4)159-167 |
| Popis: |
The aim of the study was to assess milk yields, estimate the intake of crude protein (CP) and determine the concentrations of blood urea nitrogen (BUN) in early post-partum crossbred cows grazing irrigated Leucaena leucocephala (leucaena) in a silvopastoral system relative to those in an irrigated grass monoculture. Twenty-four multiparous cows were randomly allotted at calving on the basis of previous milk yields to 2 grazing treatments: grass monoculture system (MS) of Cynodon nlemfuensis (n=12); and an intensive silvopastoral system (ISS) composed of leucaena and C. nlemfuensis (n=12). Cows were supplemented with sorghum grain (ISS) or a conventional concentrate (MS) during milking to ensure availability of metabolizable energy (ME) and CP required for milk production. Mean estimated intake of leucaena was 5.1±1.3 kg DM/d and estimated CP intakes were 1,479±3.3 and 1,258±3.3 g/d for ISS and MS, respectively (P>0.05), while estimated intakes of ME were 161±1.3 and 131±1.4 MJ/d for ISS and MS, respectively (P0.05). Concentrations of BUN were 19.1 mg/dL for cows in ISS and 15.3 mg/dL for cows in MS (P Keywords: Cattle, crude protein, Cynodon nlemfuensis, leucaena, tropical pasturesDOI: 10.17138/TGFT(4)159-167 |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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