Whole herd reporting data from the American Simmental Association as a data source for heifer pregnancy phenotypesCATTLE pregnancyHERITABILITYARTIFICIAL inseminationINFERTILITYBEEF cattleThe Author(s) 2021. Published by Oxford University Press on behalf of the American Society of Animal Scien...
5) Simmental cattle 西门塔尔牛 1. By the means of special perimers,SRY and TRO partial gene of yak and Simmental cattle sequence are amplified by using PCR technology and cloned respectively. 用特定引物对牦牛和西门塔尔牛的SRY、TRO基因部分序列进行扩增并进行TA克隆和测序。 2. During the period...
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Implementation of a Stayability EPD: American Simmental Association perspectiveSome may disagree with my assessment of seedstock breeders, but no one shoulddisagree that commercial producers' primary culling criteria is fertility and that fertility has a major impact on profitability. So if my judgment...