| Titles |
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English :
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Evaluation of protected produced from soap stocks in rations of dairy cows
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Arabic :
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تقييم الدهن المحمى المنتج من مخلفات صناعة الصابون في علائق الابقار الحلابة
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| Abstract |
Six multiparous Friesian cows in 500 kg body weight with average daily milk yield of 16 kg in duplicated 3x3 Latin square design were fed control ration contained no fat supplement, ration 2 (COMR) in which 11 % yellow com was substituted with 6% commercial Ca-soaps and ration 3 (FAMR) in which commercial Ca-soaps was substituted with farm made Ca-soaps. Farm made Ca-soaps was prepared from soap stocks which is a by-product of oil and soaps industries.The experimental rations were iso-nitrogenous, while COMR and FAMR were iso-caloric. Ether extract content of the experimental rations was 2.91, 5.83 and 5.84% for control, COMR and FAMR, respectively.
No obvious differences were found in fatty acids between commercial and farm made Ca-soaps except in C16:0 which was lower by 6.5% in farm made Ca-soaps than the commercial Ca-soaps.
No significant differences were detected on dry matter intake and nutrient digestibilities among the experimental groups except for EE digestibility which was 28% higher for fat supplemented rations than the control.
Actual milk yield, FCM yield, fat percentage and fat yield were insignificantly increased by feeding Ca-soaps rations. Actual and FCM yield increased by 0.85 kg d-1 and 0.88 kg d-1 for cows fed COMR while FCM yield increased by 0.38 kg d-1 for cow fed FAMR. No significant differences were detected in fatty acids composition of milk fat between COMR and FAMR groups. The TDN and DCP g kg-1 4% FCM were insignificantly improved by feeding Ca-soaps rations.
Ruminal pH, ammonia nitrogen and total VFA's were not affected by feeding Ca-soaps rations. Also, feeding Ca-soaps rations had no significant effect on concentrations of plasma P, Ca, triglycerides, total lipids and total cholesterol.
From the previous results of the present study it could conclude that farm made Ca-soaps could be used in dairy cows rations as effective as the highly cost commercial Ca-soaps.
In the developing countries such as in Egypt where the milk production of most cows is low, it couldn't recommended using either commercial or farm made Ca-soaps in rations of low yielding dairy cows because it increased the cost of milk production.
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| Publication year |
2006
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| Pages |
PP.139
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| Availability location |
مكتبة معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى- الجيزة
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| Availability number |
977
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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 |
Byproducts.
Dairy cows.
Fats.
Fatty acids.
Maize.
Milk production.
Milk yield.
Oils.
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| Proposed Agrovoc |
Friesian cows;Ca-soaps;soap stock;fat corrected milk;
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| Publication Type |
PhD Thesis
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