UTILIZATION OF RICE POLISHINGS IN MASH OR P.ELLETED DIETS FOR IIMULE" DUCKLINGS | ||||
| Journal of Animal and Poultry Production | ||||
| Article 5, Volume 29, Issue 5, May 2004, Page 2285-2301 PDF (1.04 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jappmu.2004.239160 | ||||
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| Author | ||||
| M. H. Rabie, | ||||
| Department of Poultry Production, Faculty of Agriculture, Mansoura University, EI-Mansoura, Egypt | ||||
| Abstract | ||||
| The present study was undertaken to investigate the effects of feeding rice polishings (RP)-containing mash or pelteled diels on growth performance, digestibility of nutrients. carcass yield and some blood plasma constituents of "mule" ducklings. Day-old "mule" ducklings were fed a dry-mash corn-soybean-based practical starter diet (contained 22% crude protein, and 2900 kcal of metabolizable energy per kg) until the birds were three weeks of age. Then, they were individually leg-banded, weighed and randomly divided into 8 experimental groups (8 X 30), each with three equal replications, fed on experimental diets up to 11 weeks of age. Four dry mash and four peJleted iso-caloric (ME of about 300Q kcal/kg) and iso-nitrogenous (CP of about 18%) experimental diets containing graded levels of rice polishings (0.0, 15.0, 30.0 or 45.0% of the diet) were formulated. The performance of growing ducklings was evaluated in terms of live body weight (LBW), daily weight gain (DWG). daily feed intake (OFI) and feed conversion ratio (FCR). Total mortality and economic efficiency of feeding (EEF) were also determined. Digestibility coefficients of nutrients of the exc erlmentat diets were measured when the birds were 10 weeks of age. At the end c ' study, some measuremenis on carcass yield and components and concentrations of certain blood plasma constituents (glucose, total protein. triglycerides, Ca and inorganic P) were performed. The results obtained for the entire experimental period could be summarized as follows: Regardless of the diot form, increasing dietary RP level from 0.0% (control) to 45% significantly improved FeR. EEF, N retention and digestibility of CP and EE of 1M experimentai diets, whereas all other criteria were not affect~d. On the other hand, irrespective of dietary RP !evel, ducklings fed on pellets exhibited superior means for l.BW, OWG, OFI, FeR and CP and EE digestibility compared with those obtained by their mash-fed countercarts whe~e3s a\l other criteria were not affected. Dietary RP level by diet form interactions had no significant effects on all criteria investigated. Only four ducklings died during the course of this experiment and the deaths were not related to the dietary treatments. Based on the obtained results, from a practical and economical paint of view, it is concluded that rice polishings can successfully be used at inclusion rates of up to 45% of pelleted diets for mule ducklings. with no adverse effects on growth performance or carcass traits. | ||||
| Keywords | ||||
| Rice polishings; mash and pelle\ed diets; growth performance; carcass traits; nutrient digestibility; blood constituents; mule ducklings | ||||
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