| Titles |
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English :
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Effect of dry live yeast as feed additive on lactating cows and growing sheep performance
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Arabic :
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تأثير استخدام الخميرة و الاعشاب الطبيعية (الينسون و التعناع) كإضافات غذائية على الاداء الانتاجى للارانب النيوزيلندى النامية
تأثير الخميرة الجافة النشطة كمضاف غذائى على اداء الابقار الحلابة و الاغنام النامية
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| Abstract |
Dry live yeast, Saccharomyces cerevisiae, (SC) as feed additive in cows and sheep rations were nutritionally evaluated through three trials of digestibility, lactation for cows and growth for sheep. The levels of yeast supplemented were 0, 10, 20 and 30 g/head/day for cows and sheep to find out the best level of dry live yeast. Accordingly, the tested rations were R1, R2 and R3 along with the control ration (C) forming 4 treatments. The control ration (C) was composed of 50% concentrate mixture, 40% clover plus 10% wheat straw. At the end of lactation and growth trials simple economic evaluation was estimated. The results showed that the yeast contained 45.62% CP, 2.25% EE, 3.0% CF, 42.23% NFE and 6.9% ash. Nutrient digestibilities of the tested rations were insignificantly improved by adding yeast. The feeding values of the tested rations were better when yeast was added. Feed intake of lactating cows was significantly higher (p< 0.01) by adding yeast. Moreover, milk yield and milk composition were improved with yeast supplementation. From economical point of view use of R1 (10 g/yeast/cow/day) could be recommended to improve milk production and feed conversion. Lambs body weight gain and feed
conversion were significantly improved (p< 0.05) by adding dry live yeast. It could be concluded that R1 (10 g yeast/lamb/day) could be used as growth promoter for growing sheep ration.
Key words: yeast, cows, lambs, performance, milk yield, milk composition, body weight gain, feed conversion, economic evaluation.
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| Publication year |
2001
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| Pages |
PP. 84
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| Availability location |
مكتبة معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى- الجيزة
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| Availability number |
1188
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| Organization Name |
Animal Production Research Institute (APRI)
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| Country |
Egypt
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| Author(s) from ARC |
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Cows.
Economic analysis.
Feed conversion efficiency.
Lambs.
Milk yield.
Performance testing.
Weight gain.
Yeasts.
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| Proposed Agrovoc |
milk composition;
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| Publication Type |
Master Thesis
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