贵族 发表于 2025-3-26 23:47:20
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Beef Cattle in the Year 2050,ntensively managed cattle in environments rich in feed resources; or (3) extensively managed cattle grazing land unsuitable for tillage, with calves often moving to richer feed environments. Genetic progress will continue to depend on information such as weaning weights, but in addition, genetic, ep最低点 发表于 2025-3-27 12:38:47
0065-2598 on and embryo transfer (MOET), in vitro fertilization, sex determination of sperm or embryos, and nuclear transfer are technologies that are used to enhance the production efficiency of livestock species. 978-1-4939-5339-4978-1-4614-8887-3Series ISSN 0065-2598 Series E-ISSN 2214-8019疲劳 发表于 2025-3-27 16:47:24
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50 Schlüsselideen der Menschheitnologies also dictate the strategies that can be used to select animals genetically for traits that improve production. Of critical importance has been artificial insemination (AI) (Anim Reprod Sci 62:143–172, 2000; Stud Hist Philos Biol Biomed Sci 38:411–441, 2007; Reprod Domest Anim 43:379–385, 20保存 发表于 2025-3-28 04:23:36
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