| Titles |
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English :
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New approach for using heart girth for calculating nutrient requirements.
1- For fattening Baladi male calves.
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Arabic :
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مفهوم جديد لاستخدام محيط الصدر في حساب الاحتياجات الغذائية
1- لتسمين العجول البلدية.
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| Abstract |
Twenty four male Baladi calves of 228 kg average live body weight (LBW) were divided into four groups. Animals were fed according to Shehata (1976) allowances (T1), animal heart girth (HG) x 0.032 (T2), animal HG x 0.034 (T3), and animal HG x0.036 (T4). The nutrients digestibility and serum total protein, albumin and urea- N concentrations of the treatments were gradually increased from T1 to T4. Also, the nutrients digestibility and serum total protein, albumin, globulins A/G ratio and urea- N were increased with age progress. Daily weigh gain and HG gain in T3 were significantly higher than T1. The economic efficiency in T2 was higher than other treatments. The results showed that the T2 was the best treatment. Every cm of HG in (T2) consumed 0.066, 0.056 0.007, 0.032 and 0.040 kg/cm from DM, OM, CP, SE and TDN, respectively. Therefore, the nutrients requirements of male Baldi calves can be determined by the following equation.
DM requirement (kg/head/day) = Animal HG x 0.066
OM requirement (kg/head/day) = Animal H G x 0.056
CP requirement (kg/head/day) = Animal H G x 0.007
SE requirement (kg/head/day) = Animal H G x 0.032
TDN requirement (kg/head/day) =Animal H G x 0.040
Or:DM requirement (kg/head/day) = Animal H G/15.1
OM requirement (kg/head/day ) = Animal H G /17.8
CP requirement (kg/head/day) = Animal HG / 143.4
SE requirement (kg/head/day) = Animal H G /31.1
TDN requirement (kg/head/day = Animal H G /24.8
The results of this study showed that the small holder can use the following equations to calculate the feed quantity for male Baladi calves which fed on concentrate feed mixture (CFM), berseem hay and wheat straw (at a roughage/ concentrate ratio of 55:45) :
The requirement of CFM (kg/head/day) =Animal H g x 0.040 or Animal HG/ 25.5.
The requirement of berseem hay/ (kg/head/day) = Animal HG x 0.015 or Animal HG/69.7
The requirement of wheat straw (kg/head/day) = Animal HG x 0.019 or Animal HG /54.1
Keywords: calves- requirements- heart girth.
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| Publication year |
2002
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| Pages |
:2893-2907
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| Availability location |
7شارع نادى الصيد-الدقى(معهد بحوث الانتاج الحيوانى)
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| Availability number |
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| Organization Name |
Animal Production Research Institute (APRI)
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| City |
المنصورة
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| serial title |
J. Agric. Sci. Mansoura Univ.
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| Department |
Cattle Breeding Research Department
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| Author(s) from ARC |
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Albumins.
Calves.
Digestibility.
Fattening.
Nutritional requirements.
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| Proposed Agrovoc |
heart girth ;
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| Publication Type |
Journal
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