Abstract
The effect of chronic suppression of growth hormone (GH) secretion by SMS 201–995 on lactation was studied in primiparous C3H/He mice. Mammary gland DNA content on day 12 of lactation was significantly lower in SMS 201–995 treated mice than in the control. There were little differences between groups in mammary gland RNA content and litter growth on day 12 of lactation. That was associated with a slightly higher RNA/DNA ratio and a significant increase in food intake during lactation. These results indicate that inhibited mammary gland growth by GH suppression has little effect on lactation. The smaller mammary gland can compensate by increasing its secretory activity.
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