نتایج جستجو برای: reproductive performance

تعداد نتایج: 1139528  

Journal: :The Journal of experimental biology 2014
Elizabeth M Dlugosz Cynthia J Downs Irina S Khokhlova A Allan Degen Boris R Krasnov

Reproduction is an energy-demanding activity in mammalian females, with increased energy requirements during pregnancy and, especially, during lactation. To better understand the interactions between parasitism and host reproduction, we investigated feeding and reproductive performance of fleas (Xenopsylla ramesis) parasitizing non-reproducing, pregnant or lactating gerbilline rodents (Meriones...

Journal: :Journal of animal science 2004
G A Perry M F Smith

Students in Reproductive Management (a senior-level course with approximately 20 to 50 students per semester) at the University of Missouri-Columbia are required to participate in a simulation exercise that is designed to improve reproductive efficiency in a beef herd. During a simulated 5-yr period, students must 1) improve reproductive efficiency in a beef cow-herd through implementation of r...

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