| Titles |
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English :
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Effect of source and level of energy and yeast addition on lambs performance
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Arabic :
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تأثير مصدر و مستوى طاقة الغذاء مع اضافة الخميرة على اداء الحملان
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| Abstract |
Thirty six Ossimi male lambs of 19 .83 ± 0. 97 kg an average live body weight (LBW) were randomly divided into six similar groups (6 of each) to evaluate the effect of feeding two main energy sources (corn and barley grains) and two levels of energy requirement (l00% without or with yeast and 120% without yeast).Animals in all groups were fed on the basis of energy requirement as follows:55% com grains +5%soybean cake+40%clover hay(Rl); Rl plus3gm yeast /day/head/(R2); 75% com grains + 5%soybean cake+40% c1over hay (R3);55% barley grains +5%soybean cake+40%clover hay (R4): R4 plus 3gm yeast /day/head(R5)and 75% barley grains +5%soybean cake+40%c1over hay (R6).
Results showed that com rations detected higher (P>0.05) digestibilities of DM; OM :CP and NFE than those in the barley rations.
The feeding values expressed as TDN and DCP% were higher (P>0.05) of corn rations than those of barley rations. Adding yeast or increasing energy level in rations improved DM;OM and NFE digestibilities and feeding values in terms of TDN and DCP%. Energy source had no significant (P>0.05) effect on ruminal parameters n(pH:NH1-N and TVF A's). While adding yeast or increasing energy level decreased (P>0.05) pH values and increased (P>0.05) concentrations of NH3-N and TVF A's. Total protein albumin; globulin concentrations and A/G ratio of blood serum were not significantly (P>0.05) changed among different treatments. Average daily gain was significantly (P<0.05) higher of com groups than that of barley groups. Yeast supplementation and increasing energy level significantly (P<0.05) improved average daily gain.
Generally, it could be concluded that lambs fed com rations were more efficient than those fed barley rations. Adding yeast in com or barley rations improved feed efficiency whereas, lambs fed high energy level were less efficient in feed conversion than those fed control rations.
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| Publication year |
2007
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| Pages |
1-20
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| Availability location |
معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
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| Availability number |
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| Organization Name |
Animal Production Research Institute (APRI)
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| serial title |
Egyptian Journal of Applied Science
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| ISSN |
1110-1571
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| Author(s) from ARC |
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Energy sources.
Lambs.
Nutritive value.
Performance testing.
Yeasts.
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| Publication Type |
Journal
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