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003 | OSt | ||
005 | 20220802140959.0 | ||
008 | 070510s19uu xx 00 eng d | ||
040 | _cCvSU Main Campus Library | ||
041 | 0 | _aeng | |
082 | 0 | 4 |
_a636.597 _bH97 1982 |
100 | 0 |
_aHutabarat, Pittor Hasudungan _eauthor _927073 |
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245 | 1 | 0 |
_aGenotype x nutrition interactions in growth and laying performance of ducks / _cby Pittor Hasudungan Hutabarat. |
260 | 0 |
_aLos Ba�os, Laguna, _c1982. _bCavite State University- Main Campus, |
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300 |
_a123 pages : _billustrations ; _c28 cm. |
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336 |
_2rdacontent _atext |
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337 |
_2rdamedia _aunmediated |
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338 |
_2rdacarrier _avolume |
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500 | _aThesis (Ph.D.--Animal Science) University of the Philippines | ||
504 | _aIncludes bibliographical references. | ||
508 | _aCollege of Agriculture, Food, Environment and Natural Resources (CAFENR) | ||
520 | 3 | _aHUTABARAT, PITTOR H. University of the Philippines at Los Bafios, May, 1982. Genotype x Nutrition Interactions in Growth and Laying Performance of Ducks. Major Professors: Dr. Elpidio C. Coligado and Dr. Cecillo R. Arboleda. Two independent experiments were conducted to evaluate the effects of breed, plane of nutrition and breed x plane of nutrition interactions on the performance of a meat-type Mallard Pek (anas plathyrhynchos), Muscovy (Cairina moschata) and egg-type Mallard anas plathyrhynchos under low and high planes of nutrition. Muscovy gave consistently higher body weight gain and carcass yield in both sexes than Pekin and Mallard at both planes of nutrition. Among the females, the gain in weight of Pek :la was comparable to that of Muscovy under high plane of nutrition. During the brooding and growing periods, ducks fed high Mane of nutrition gained more weight and had better feed efficiency. Significant breed x plane of nutrition interactions in 'cody weight gain and feed efficiency of ducks were observed in both periods. Under high plane of nutrition, egg production during the first and until the third month was the highest in Mallard and the lowest in Muscovy. Pekin laid bigger eggs but consumed more feed than the Mallard. At both planes of nutrition, Muscovy consistently and significantly consumed feed least efficiently but laid eggs with the highest average weight. Significant (P<0.05) breed x plane of nutrition interaction in feed efficiency was observed in both growing and laying periods. This study tends to show that the comparative performance of the three breeds of ducks differed under high and low planes of nutrition during the growing and laying periods. | |
541 |
_cSubmitted to the University Library _d07/18/2007 _eT-1471 |
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650 | 0 |
_aDucks _910584 |
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690 |
_91418 _aDoctor of Philosophy _xAnimal Science |
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700 |
_927074 _aArboleda, Cecillo R. _eadviser |
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856 |
_uhttp://library.cvsu.edu.ph/cgi-bin/koha/opac-retrieve-file.pl?id=a948d0c3b55548cebae8cfa600b41436 _yClick here to view thesis abstract and table of contents |
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942 |
_2ddc _cMAN |
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_c6217 _d6217 |