Graduate Thesis Or Dissertation
 

Reproductive performance of Wrolstad Medium White turkey hens fed a breeder diet containing a yeast culture

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/dr26z065m

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  • An experiment was conducted to evaluate a breeder diet containing a yeast culture as a means of improving the reproductive performance of two genetically dissimilar lines of turkey hens (designated as L and H). Two hundred hens of lines L and H, 100 hens per line, were housed in a curtain sided breeder house (10 hens/line/pen). Starting at 31 weeks of age (WOA), the hens were fed either Corn-soy (CS) or Corn soy+yeast (CS+Y,.5% Diamond V Mills "XP" yeast culture, Saccharomyces cerevisiae) diets. Between 33 and 45 WOA, the hens were mated inter se and from 45 to 51 WOA reciprocal line matings were established. Hen reproductive parameters measured between 31 and 51 WOA were, body weight (BW) change, feed intake, feed per dozen eggs, egg production, egg size, fertility, embryonic mortality, and hatchability of fertilized eggs from 7 biweekly egg settings. No differences (P>.05) were observed with yeast culture supplementation of the diet for changes in BW, egg production, egg weight, embryonic mortality, and hatchability of fertilized eggs (n= 5 biweekly hatches) of either line. A significant time by diet interaction was evident only in feed intake. There was an improved (P<.05) hen fertility in line H as a result of feeding the dietary yeast culture. When reciprocal line crosses were established between 46 and 51 WOA, hatch of fertilized eggs (n= 2 biweekly hatches) was substantially improved (p<.05) from hens fed the yeast culture containing diet. The results of this study suggest that there is a genetic factor associated with the feeding of a diet containing a yeast culture to turkey breeder hens.
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  • File scanned at 300 ppi (Monochrome) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
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