نتایج جستجو برای: crossbreeding
تعداد نتایج: 8975 فیلتر نتایج به سال:
The search for ways to select for improved beef cow efficiency has become the holy grail of the beef cattle seedstock industry. Increases in beef production have often been possible due to enhancements in the reproduction indexes (e.g. calving frequency, age at first calving, calving interval), nutrition concepts (e.g. strategic supplementation, type of forage as well as quantity and quality), ...
The once bred ewe slaughter method proposes the use of female lamb to produce a lamb and then both are slaughtered, increasing income and high quality meat production. Thus, this study evaluated the growth and reproduction performance of ewe lamb from Santa Inês (SI), a naturalized genetic resource, and their crosses (Dorper x Santa Inês (DOR), Texel x Santa Inês (TEX), Ile de France x Santa In...
In 2019, a further study is under way to evaluate morphological and economically viable traits of planned bee subspecies native the Republic Ingushetia. The following were studied, namely: Mountain Grey Caucasian, Carniolan Troiseck-F-1, Buckfast F-1. Caucasian bees possess high genetic adaptive potential local environmental conditions, have quite melliferous capacity, in this regard are good m...
The predicted performance of nine crossbreeding strategies for milk production and reproductive traits and cow live weights (LW) were compared. The strategies were selected because of their superiority to many others. The data were from crosses of Ayrshire (A), Brown Swiss (B), Friesian (F) and Sahiwal (S) cattle. Performances were predicted from the results of a genetic model based on additive...
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