000 03034nam a2200313 a 4500
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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
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,
300 _a123 pages :
_billustrations ;
_c28 cm.
336 _2rdacontent
_atext
337 _2rdamedia
_aunmediated
338 _2rdacarrier
_avolume
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
650 0 _aDucks
_910584
690 _91418
_aDoctor of Philosophy
_xAnimal Science
700 _927074
_aArboleda, Cecillo R.
_eadviser
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
942 _2ddc
_cMAN
999 _c6217
_d6217