DIFFERENT MAIZE SILAGE CULTIVARS WITH OR WITHOUT UREA AS A FEED FOR RUMINANT: CHEMICAL COMPOSITION AND IN VITRO FERMENTATION AND NUTRIENT DEGRADABILITY

被引:0
作者
Sallam, Sobhy M. A. [1 ]
Rady, Asmaa M. S. [2 ]
Attia, Marwa F. A. [3 ]
Elazab, Mahmoud A. [4 ]
Vargas-Bello-Perez, Einar [5 ,6 ]
Kholif, Ahmed E. [7 ]
机构
[1] Alexandria Univ, Fac Agr El Shatby, Dept Anim & Fish Prod, Alexandria 21545, Egypt
[2] Alexandria Univ, Fac Agr El Shatby, Crop Sci Dept, Alexandria 21545, Egypt
[3] Agr Res Ctr, Anim Prod Res Inst, Giza 12618, Egypt
[4] Arid Lands Cultivat Res Inst, City Sci Res & Technol Applicat SRTA City, Dept Livestock Res, Alexandria 21934, Egypt
[5] Univ Reading, Sch Agr Policy & Dev, Dept Anim Sci, POB 237,Earley Gate, Reading RG6 6EU, England
[6] Univ Autonoma Chihuahua, Fac Zootecnia & Ecol, Periferico R Aldama Km 1, Chihuahua 31031, Mexico
[7] Natl Res Ctr, Dairy Sci Dept, 33 Bohouth St, Giza, Egypt
关键词
chemical composition; in vitro incubation; maize cultivars; nonprotein nitrogen; urea treatment; GAS-PRODUCTION; RUMEN;
D O I
10.29393/CHJAAS40-14DMSA60014
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
This study compared forage yield and agronomic characteristics of 9 maize cultivars (Pioneer 30N11, Pioneer 4444, Pioneer 30K08, SC-128W, SC-166Y, SC-78Y, TWC-324W, TWC-368Y and TWC321W) ensiled with or without urea as for ruminants on in vitro ruminal fermentation characteristics and nutrient degradability. A factorial randomized complete block design was used. Pioneer 30N11 and Pioneer 4444 showed the greatest silage forage yield, ear weight, and plant height. The chemical composition of maize silage cultivars without urea revealed that Pioneer 30K08 had the observed with SC-78Y. CP content ranged from 118 to 156 g/kg when urea was added to the maize silage cultivars. The neutral detergent fiber, acid detergent fiber, and acid detergent lignin contents recorded the highest values (P<0.01) in TWC-324W, SC-128W and SC-78Y. Urea treatment of different cultivars affected (P<0.05) the concentrations of CP, ether extract (EE), non-structural carbohydrates (NSC), and fibers. Urea treatment increased CP and EE in all cultivars and increased or decreased truly degraded dry matter (TDDM), truly degraded organic matter (TDOM), protozoa, ammonia and methane (P<0.05). Overall, Pioneer 30N11, Pioneer 4444 and Pioneer 30K08 showed the greatest forage yield and nutritive value as a feed for ruminants.
引用
收藏
页码:137 / 149
页数:13
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