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. 2019 Jun 13;207:162–170. doi: 10.1016/j.anireprosci.2019.06.012

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Fig. 2 — Heterogeneity of passive immune transfer (evaluated through blood IgG concentration at Day 2 of age) inter and intra litter. n = 54 Beagle puppies from 9 litters from one kennel, with free suckling. The horizontal line indicates the threshold defining failure of passive immune transfer (2.3 g/L). In Litters 5, 6 and 9, all puppies reached a sufficient passive immune transfer; in Litter 4, all were in failure of passive immune transfer; within Litter 1 and 7, passive immune transfer was heterogeneous, some above, others below the threshold.