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Control Number248609
Date and Time of Latest Transaction20120503221942.PM
General Information120503s |||||||||b ||00|||
Cataloging SourcePCARRD
Local Call NumberSF 99 C59 C44
Main Entry - Personal NameCelestino, Oliver F.
Title StatementNutritional and feeding values of quality protein maize in laying hens by Oliver F. Celestino
Physical Description51 leaves
Summary, Etc.A new cultivar of quality protein maize (QPM) was assessed for its nutritional and feeding values. The QPM was analyzed for its proximate and amino acid compositions. The dry matter digestibility and metabolizable energy content of the maize were determined using roosters. The same analyses were performed for the normal maize (NM) which served as a basis for comparison. Using the determined nutrient values, least-cost layer diet containing either QPM or NM was formulated to contain the same amount of nutrients. The dietary formulations were randomly assigned to 144 layers (24 weeks of age) with six replications of 12 layers each. Feeding period was 16 weeks. The effects of feeding the diets on egg production, egg quality and economics of production were assessed. The QPM contained 29.41% more crude protein, and 8.44% more crude fat than NM. Its crude fiber, nitrogen-free extract, and crude ash contents were lower by 5.06%, 3.01%, and 34.30% than NM, respectively. The QPM had 22.96% more total amino acids than NM. The essential amino acids leucine, lysine, methionine + cystine, tryptophan, threonine, arginine, isoleucine, valine, phenylalanine and histidine were higher for QPM than NM by 11.65%, 32.98%, 29.65%, 44.07%, 24.16%, 39.18%, 19.14%, 25.93%, 18.39% and 41.22%, respectively. The QPM and NM had similar DM digestibility (P>0.05). The apparent metabolizable energy (AME) of QPM was 3,353 kcal/kg and 3,336 kcal/kg for NM while the true metabolizable energy (TME) was 3,578 kcal/kg for QPM and 3,533 kcal/kg for NM; differences were insignificant. Layers fed QPM based diet produced as much eggs, with same egg mass and feed efficiency as those fed NM based diet; there were tendencies though that the former had consistently higher values than the latter for these parameters in the first six weeks of the feeding trial. Likewise, quality parameters for eggs from both diets were comparable except for yolk color score which was lower for eggs from layers fed the QPM based diet than for eggs from layers fed NM based diet. The income over feed cost was comparable in QPM based diet and NM based diet when the current price and shadow price of the maize were applied.
Subject Added Entry - Topical Termcorn -- nutritional value
 maize
 feeding value
 layers
 quality protein maize
LocationDOST PCARRD SF 99 C59 C44 THESES PCARRD/SLS PCR-12-0048 1 Others 2012-04-16
  
     
 
Physical Location
Department of Science and Technology
Philippine Council for Agriculture, Forestry and Natural Resources Research and DevelopmentSF 99 C59 C44
  
     
 
Digital Copy
Not Available
  
     
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