Forage kale (Brassica oleracea L.) was seeded on three dates and fertilized at different levels of N as NH4NO3 for 3 yr. The highest dry matter (DM) yield was obtained with the earliest date of seeding and with levels of N fertilization of 120 kg/ha. The yield of crude protein (CP) was relatively constant among years, for the different dates of seeding and for N fertilization above 120 kg/ha. Increasing N fertilization or delaying seeding increased the leaf:stem ratio, and consequently the CP content. The levels of NO3-N in stems, leaves and whole plants were at an acceptable level for safe feeding. The cellulose, crude fiber, Ca and P contents were not affected greatly either by the dates of seeding or by the levels of N fertilization. The in vitro DM digestibility (IVDMD) was not affected markedly by any treatment.

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Body weights and measurements were compared among several genetic groups from the 496 Holstein-based H line heifers and344 Ayrshire-based A line heifers.Differences among herds (Charlottetown, P.E.I., Lennoxville

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H line heifers on the average showed first heat 27 days earlier, were I 1 days younger at first conception, were 13 days younger at first calving, were 33 kg heavier at first calving, had 30Vo more difficult calving and 9Vo fewer retained placenta than the A line heifers. Differences among the sire groups within the H line were small and nonsignificant while within the A line they were significant for age at first heat and weight at first calving.