Grazed barley for dairy cows in small-scale systems in the highlands of Mexico

Autor: Aída Gómez-Miranda, Felipe López-González, Rodolfo Vieyra-Alberto, Carlos M. Arriaga-Jordán
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Italian Journal of Animal Science, Vol 21, Iss 1, Pp 178-187 (2022)
Druh dokumentu: article
ISSN: 1594-4077
1828-051X
1828051X
DOI: 10.1080/1828051X.2021.2022540
Popis: Small-grain cereals with characteristics of hardiness of, such as barley have been evaluated as conserved forage for cows in small-scale dairy systems (SSDSs); but barley may also be grazed due to its regrowth capability after defoliation. The objective was to assess grazing of barley at 59 (B59), 66 (B66) and 73 (B73) days after seeding with milking cows in SSDSs. Twelve Holstein cows were grouped in a randomised 3 × 3 Latin Square design, replicated four times, with 14-day experimental periods. Measurements of animal variables and collection of feed and milk samples took place over the 4 final days of each period. A partial cost analysis was performed including only feeding expenses. The mean net forage accumulation during the experiment was 97.1 kg DM d−1. The botanical composition was affected by secondary vegetation (Mexican aster and wild radish, among others), where barley content was higher in B73 than in B66 and B59 pastures. The contents of dry matter (189–414 g·kg), neutral detergent fibre (NDF; 456–585 g·kg/DM), acid detergent fibre (ADF; 181–265 g·kg/DM) and crude protein (CP; 86–158 g·kg/DM) showed significant (p
Databáze: Directory of Open Access Journals
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje