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- W106375173 abstract "Three distinct studies using an ethidium bromidedigitoninfluorometric assay were conducted to determineif the fertilizing ability of individually caged broilerbreeder males (BBM) could be enchanced by nutrition,breeding and semen extender viscosity.The first study evaluated the effects on thespermatozoal quality of BBM by feeding corn-soybean meal(CS) and corn-yellow pea (CYP) diets containing 16% crudeprotein (CP) fed on a daily restricted basis and the 7% CPfed ad libitum. The study was conducted from 30 to 43weeks of age (WOA). Under the conditions of this study,feeding the diets containing CS and CYP did not havedetrimental effects on spermatozoal cell characteristics,fertilizing ability and hatchability of fertile eggs. Thisstudy demonstrated that BBM kept in cages could be fedyellow peas as well as 77. CP diets.In the second study, BBM were divergently selectedfor a spermatozoal cell viability index score for threegenerations. Semen was collected and evaluated in eachgeneration for semen viability, fertilizing ability andhatchability of fertile eggs. No differences (P>.05) wereobserved between the divergently selected lines in bothgenerations (61 and 02) for the semen characteristicsevaluated. Attempts to explain the lack of response todivergent selection were discussed.The third study attempted to decrease theconventional insemination dose of 100 x 10⁶ spermatozoalcells to 33 x 100⁴ per hen by increasing the viscosity ofBeltsville Poultry Semen Extender (BPSE) by the additionof 47. (w/v) carboxymethylcellulose (CMC). The fertility atthe lower insemination dose was not enchanced byincreasing the viscosity. When the data was arrangedaccording to the insemination dose and fertility wasevaluated over the first seven days of the fertile eggcollection period, no difference was observed (P<.05)according to the insemination dose. Therefore, the cost ofmaintaining the BBM could possibily be reduced by using 33x 10⁶ sperm cells for artificially insemination under thefield conditions." @default.
- W106375173 created "2016-06-24" @default.
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- W106375173 date "1987-12-18" @default.
- W106375173 modified "2023-09-24" @default.
- W106375173 title "Factors affecting semen quality and their effects on the fertilizing ability of broiler breeder spermatozoa using a fluorometric assay" @default.
- W106375173 hasPublicationYear "1987" @default.
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