| Autor: |
Marín-Santana, M. N., Torres-Lemus, E., López-González, F., Morales-Almaraz, E., Arriaga-Jordán, C. M. |
| Předmět: |
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| Zdroj: |
Journal of Livestock Science; 2021, Issue 12, p206-212, 7p |
| Abstrakt: |
Small-scale dairy systems ameliorate poverty and contribute to rural development. The dry season generates feed scarcity, and farmers must develop strategies based on quality forage to reduce purchased inputs. The objective was to assess the performance of dairy cows grazing perennial ryegrass or tall fescue pastures both associated with white clover complemented with triticale (X. Triticosecale Witt.) hay during the dry season, as well as the agronomic and chemical composition of pastures and complements. An on-farm experiment was undertaken with a 4x4 Latin Square design with a factorial arrangement, using four Holstein cows. Treatments were TFH= Tall fescue with white clover + 3.0 kg dry matter(DM)/cow/day of triticale hay, RGH= Perennial ryegrass with white clover + 3 kg DM/cow/day of triticale hay, RGNH= Perennial ryegrass with white clover (no hay), and TFNH= Tall fescue with white clover (no hay). Grazing was for 8 h/day in two pastures (ryegrass and tall fescue) of 0.83 ha each, and cows received 4.45 kg DM of concentrate/cow/day. There were no significant differences (P>0.05) in sward height or net herbage accumulation. Contents of dry matter, crude protein, NDF and ADF, as well as the digestibility of organic matter and metabolizable energy were similar between pastures (P>0.05). There were no differences (P>0.05) among treatments for any productive performance variables, but there were statistical differences for estimated herbage intake (P<0.05). Conclusion was that complementing 3.0 kg DM of triticale hay/cow/day did not show any significant effect on any of the evaluated variables but could reduce grazing pressure in pastures. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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