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by 이오스인테리어
Dependence on first breeding season achievements inside replacement heifers
Thus, more costs for heifer innovation because of losings when some heifers are not able to get pregnant should be accounted for
Heifer reproductive profits in the first calving year is extremely connected that have existence reproductive performance [nine,10,11]. A collection of information out of multiple education showed you to first breeding season maternity cost for the animal meat heifers are normally taken for 64 so you can 95% significantly less than natural breeding (NB) by yourself or even the mixture of artificial insemination (AI) followed closely by NB ([several,13,14,15,sixteen,17,18,19,20,21,twenty-two,23] (Fig. 1)). Completely, on average 85% from heifers get pregnant from the conclusion of reproduction 12 months. By comparison, earliest service conception prices to artificial insemination is actually straight down and you will range regarding thirty six% so you can 69% [several, fourteen, 17, 18, 20, 21, 23, 24]. The previous data away from breeding ideas away from eight yrs (2011–2017) indicated that 43%, 42%, and you can fifteen% of heifers became expecting because of the AI, NB, otherwise didn't get pregnant during their first reproduction year, respectively .
These number emphasize reproductive inefficiency among the many major restricting biological services notably impacting the fresh meat cows community
Maternity costs in chicken heifers. Y-axis denotes percentage of pregnancy lead, and you will X-axis means degree referenced. Multiple bars for similar site mean different fresh therapy in this the same statement