Table 2.

Uptake of amino acids by the mammary gland of the lactating sow and their output in milk on Day 14 of lactation

Amino acid	Uptake by the lactating mammary glandsa	Output in milk	Difference
		g/day
Arginine	31	6	+25
Proline	26	40	−14
BCAA	76	46	+30
Glutamine	16	36	−20

Adapted from Li et al. [69], Lei et al. [67], and Trottier et al. [80]

^aReferring to a sum of all mammary glands