| Autor: |
Velázquez-Martínez, Mauricio, Garnica-Monzalvo, Lino, Vargas-Monter, Jorge, Hernández Martínez, Rosendo, Noguez-Estrada, Juan, Sifuentes-Saucedo, Diana M., Hernández-Guzmán, Filogonio J. |
| Předmět: |
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| Zdroj: |
Agro Productividad; jul2022, Vol. 15 Issue 7, p213-219, 7p |
| Abstrakt: |
Objective: To assess the forage production of corn and corn with sunflower forage, as well as ewes' preference for this forage as silage. Design/methodology/approach: A completely randomized block design with three replications was used in the field, while a completely randomized design (Tukey α=0.05) was preferred for work in laboratory. Sowing was done in spring-summer 2020 under rainfed conditions. The treatments were as follows: 100% corn; 90% corn + 10% sunflower; and 80% corn + 20% sunflower. Forage production was assessed at 126 days of sowing. Once ensiled, forage was assessed again through a bromatological analysis. Silage preference was evaluated for 20 days with 10 pregnant Hampshire × Suffolk ewes with a live weight of 44.8 kg. Results: The combination of 80% corn + 20% sunflower delivered a higher fresh forage yield (P<0.001; 28 t ha-1), a higher percentage of soluble protein (P<0.01), and a higher percentage of lignin (P<0.001; 4.6%). The ewes preferred the 100% corn silage, since it contained a lower percentage of non-fiber carbohydrates (22.2%), a lower percentage of acid detergent fiber (35.3%), and a lower percentage of neutral detergent fiber (59.4%). Study Limitations/Implications: Sunflower should be established in soils with low amounts of broadleaf weed seeds, since chemical control cannot be applied to the said weeds. Findings/Conclusions: A greater amount of forage was produced per surface unit when 80% corn was combined with 20% sunflower. Ewes preferred the 100% corn silage due to its lower percentage of lignin and a higher in vitro digestibility of neutral detergent fiber. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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