| Titles |
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English :
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New approach in raising baladi suckling calves and effect on future productive and reproductive performance
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Arabic :
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تصور جديد في تنشئة العجول الرضيعة و تأثير ذلك على مستقبل أداؤها الانتاجى و التناسلى.
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| Abstract |
Twenty baladi newly born male calves, (3 days after calving), were utilized to study the effect of different milk feeding regime on their performance up to sexual maturity. Calves were allotted into four groups (A, B, C and D) almost similar in birth weight (23.2±1.3, 23.0± 1.1, 23.4±1.2 and 23.2±1.4 Kg, respectively). Milk feeding regime was as following : Group A got 8.0% of their weekly live body weight. Group B got 10.0% of weekly live body weight. Group C got 12.0% of weekly live body weight. Daily milk feeding for calves in groups A,B and C decreased after 5th week to reach 2% of live body weight and then fixed up to weaning, Group D (control) fed as recommended milk feeding tables by A.B.R.I(1997). Daily Gain (D.G),Relative Group ( R.G),total dr y matter intake (D.M.I), feed efficiency, Economic Efficiency (E.E), blood plasma hormones and metabolites, puberty and sexual maturity age were studies. During suckling period in group C consumed the lowest quantity of milk (112.1 Kg/head) followed by B (117.5 Kg/head), A(133.1Kg/head) and D (134.0 Kg./head). Both B and C groups had a shorter suckling period (117 and 112 days/head, resp.) comparing with other tow groups A and D (133 and 134 days/head, resp.). calves in B and C groups had a higher D.G.R.G. D.M.I. and feed efficiency compared with those obtained in both of groups A and D. differences were significant (P<0.05), economic efficiency was significantly ( P<0.05) higher in group A compared with groups B,C and D. blood components shows that calves in group C characteirzed by higher (P<0.05) Hb value, T4 hormone, total protein, albumin, globulin, total lipids and glucose concentration compared with groups A. B and D.
After weaning the result obtained revealed that groups B and C had the highest D.G. and feed efficiency up to sexual maturity. Earlier puberty age were observed in groups B (355 day) and C (346 day) were earlier than in group A ( 415 day). Sexual maturity were also earlier in groups B (476 day) and C (453 day), than each of groups A (531 day) and D (526 day).
Data obtained in this study suggested that maintaining of baladi newly born calves on daily milk feeding regime equal to 10% of their weekly live body weight is more suitable to improve their future productive and reproductive performance.
Key words: cattle, male calves, sucking, growth, feed efficiency, puberty, sexual maturity.
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| Publication year |
2003
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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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| Country |
Egypt
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| serial title |
Egyptian Journal Applied Science.
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| Volume |
18
. 3
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| Department |
Cattle Breeding Research Department
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| Author(s) from ARC |
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| Agris Categories |
Animal physiology - Growth and developmentAnimal physiology - Nutrition
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AGROVOC
TERMS |
Calves.
Cattle.
Feed conversion efficiency.
Growth.
Sexual maturity.
Suckling.
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| Publication Type |
Journal
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