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English :
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Degradation of phenloic compounds in buffalo calve starter by peroxidase enzyme from natural sources: 1- effect on growth performance of growing calves before complete rumen development
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Arabic :
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تحلل المركبات الفينولية الضارة في بادئات العجول الجاموسى بواسطة انزيم البيرووكسيديز من مصادر طبيعية 1- التأثير على اداء العجول الجاموسى النامية قبل اكتمال تطور الكرش
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| Abstract |
This research was conducted to study the impact of whey as a natural source of peroxidase enzyme on degradation of phenolic compounds (anti nutritional factors) in young calves feed before full rumen development and its effect on their growth performance. Twelve weaned buffalo calves with an average age of 3.5 months and about 99.5 ±1.25 kg of weight were randomly divided into 3 groups (4 animals in each group) and used in feeding trail for a period of 2.5 months. Three rations were formulated of70% concentrate calve starter + 30 % clover hay, on DM basis, in which control R1 had zero whey, while R2 and R3 were supplemented with 2 and 3% whey as a natural source of peroxidase enzyme, respectively. Calves starter mainly consisted of 43% yellow corn, 23% soybean meal and 27% wheat bran. Results of digestibility of the experimental rations showed higher (P<0.05) DM, CP, CF, NDF, ADF and cellulose for groups R2 and R3 compared with control one. Similar trend was observed with TDN and DCP values. Rumen parameters expressed as NH3-N, TVFA's, total bacteria and total fungi counts were appeared in favor of groups fed R2 and R3 compared with R 1. Whey supplemented groups had higher (P<0.05) concentration of total protein than control. On the other hand, R1 was (P<0.05) higher in the recorded values of AST and ALT compared with R3 and R2, respectively. Groups R2 and R3 recorded significant (P<0.05) improvement in the final body weight (14.65 and 11.11 %), total body gain (50.60 and 36.90%), average daily gain (50.53 and 36.96%) and relative daily gain based to control (R1). Average daily feed intake as DM, TDN and DCP were higher with animals fed R2 and R3 than those of R1. Also, groups R2 and R3 achieved better feed efficiency compared with control one (R1). The economic efficiency achieved by groups fed R2 and R3 were better than RI. It could be concluded that supplementing young calves feed contain some ingredients have high levels of phenolic compounds with 2 % whey as natural source of peroxidase enzyme can help in degrading these anti nutritional factors and improve their growth performance, feed and economic efficiency.
Keywords: phenolic compounds, peroxidase enzyme, calves, digestibility, growth performance, blood constituents.
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| Publication year |
2013
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| Pages |
57-67
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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 Nutrition and Feeds
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| ISSN |
1110-6360
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| Author(s) from ARC |
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| External authors (outside ARC) |
صباح محمود علام
جامعة القاهرة
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Blood composition.
Calves.
Digestibility.
Enzymes.
Growth.
Performance testing.
Peroxidases.
Phenolic compounds.
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| Publication Type |
Journal
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