Publications

Titles

English :

Effect of using three varieties of sorghum bicolor stover silages on performance of growing and fattening lambs

Arabic :

تأثير استعمال سيلاج عيدان السورجم المجهز من ثلاثة اصناف مختلفة على اداء النمو و التسمين للحملان

Abstract

This study aimed to evaluate and compare three varieties of sorghum bicolor stover after ensiled without any additives. Twenty Ossimi Lambs were selected and randomly distributed in a completely randomized block design with four dietary treatments: control ration (CR) which comprised of 60% concentrate feed mixture (CFM) and 40 % clover hay, and the three tested silage rations R1, R2, R3 were formulated from 50% CFM for each in addition 50% of the respective Sha-2 hybrid, ICSV -273 and Dorado varieties silages, with five replicates and experimental period of 120 days for growth-fattening performance trial. Four digestibility trials were performed to evaluate the feeding value of the control and silage rations. Results indicated that no significant differences were noticed among the three types of silage respecting pH, ammonia -N and butyric acid. The total VF As, lactic acid and acetic acid concentrations were significant (P<0.05) lower with ICSV -273 than those of other types. Totally, on the basis of pH, acid concentrations and ammonia-N, all silages were of good quality. Digestibility coefficients of DM, OM, CF and NFE were significantly (P<0.05) higher with all silage rations than the control one, while vice versa was occurred with digestibility of CP and EE. Within tested rations, significant differences among them were found in most nutrients, with superiority almost for R1. Digestibility of CP was not affect by the type of silage. The digestibility of NDF and ADF were followed similar trend to those of CF. Intake of DM and daily gain did not significantly influenced by the dietary treatments. The best-feed conversion efficiency was achieved by CR group respecting DM, TDN and DCP: gain, with significant differences only in case of TDN, among treatments. Across silage rations, differences related these items being non significant. The economical efficiency was potentially in favorable of silage rations with very slightly differences among them. It could be concluded that the silages of the three varieties of sorghum stover are valid substitutions for clover hay and / or some other medium quality roughages in sheep rations. Potentially it can be beneficial for smallholder's farmers during the period of forage scarcity. Keywords: Sorghum stover silage, feeding value, sheep, growth, fattening performance.

Publication year

2010

Pages

271-283

Availability location

معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى- الجيزة

Availability number

Organization Name

Animal Production Research Institute (APRI)

serial title

Egyptian Journal Nutrition and Feeds

ISSN