Sealing strategies in corn silage and sheep performance in feedlots

Q4 Veterinary

Ciencia Animal Brasileira Pub Date : 2023-04-17 DOI:10.1590/1809-6891v24e-74185e

K. C. Scheidt, T. G. Diaz, J. Machado, M. P. Osmari, J. Daniel, C. C. Jobim

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Abstract

Abstract The objective of this study was to evaluate the effects of different sealing strategies on aerobic stability and feed value of corn silage supplied to finishing lambs. The treatments were set up according to the silo sealing strategy: BP (black polyethylene film), BP + Bagasse (black polyethylene film + sugarcane bagasse) and BP + Silostop (Silostop® Orange oxygen barrier film + black polyethylene film). Six lambs per treatment were used, totaling 18 animals in an experimental period of 63 days. The silage from LP treatment presented the highest aerobic stability, however with lower dry matter digestibility coefficients. No significant differences were detected among treatments for intake and performance of lambs. But for final body weight, weight gain, daily average gain, feed efficiency and dry matter intake, the best results, in absolute value, were found for lambs fed with silage from LP + Bagasse treatment. The silage sealed exclusively with black polyethylene film showed greater aerobic stability. The different sealing strategies used in this experiment did not influence the performance of finishing Dorper x Santa Inês lambs.

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玉米青贮封料策略与饲料场绵羊生产性能

摘要本试验旨在研究不同封料策略对育肥羔羊玉米青贮有氧稳定性和饲料价值的影响。根据封仓策略设置BP(黑色聚乙烯膜)、BP +甘蔗渣(黑色聚乙烯膜+甘蔗甘蔗渣)和BP + Silostop (Silostop®橙色阻氧膜+黑色聚乙烯膜)处理。每组6只羔羊，共18只，试验期63 d。LP处理青贮的好氧稳定性最高，但干物质消化系数较低。各组羔羊采食量和生产性能无显著差异。但在末重、增重、平均日增重、饲料效率和干物质采食量方面，以LP +甘蔗渣青贮处理羔羊的绝对效果最好。单独用黑色聚乙烯薄膜密封的青贮饲料表现出较好的有氧稳定性。本试验采用的不同封尾策略对育肥猪Inês羔羊的生产性能没有影响。

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