BACKGROUND The provision of feed is a major cost in beef production. Therefore, the improvement of feed efficiency is warranted. The direct assessment of feed efficiency has limitations and alternatives are needed. Small intestine micro-architecture is associated with function and may be related to feed efficiency. The objective was to verify the potential histomorphological differences in the ...

OBJECTIVE To evaluate the breast histomorphometric changes in rats treated with estrogen and/or progestogen for a short period of time. METHODS Forty oophorectomized rats were divided into four groups: GC, vehicle; GE, treated with estradiol benzoate (37.6 mg/animal); GP, treated with medroxyprogesterone acetate (11.2 mg/animal) and GEP, treated with estradiol benzoate (37.6 mg/animal) plus m...

Treatment effects on bone quality and remodeling was assessed in postmenopausal women with osteoporosis treated with oral alendronate. One transiliac bone biopsy was obtained from 231 women at either 24 mo ( n 5 11) or 36 mo ( n 5 120) from the start of treatment with alendronate at doses of between 5 and 20 mg/d, or placebo. 64 biopsies at 24 mo (31 from the placebo group and 33 alendronatetre...

Histomorphometry studies in rhesus monkeys have shown that daily treatment with full-length parathyroid hormone 184 (PTH) increases bone formation and bone volume. However, there is no published information on the effects of PTH treatment on bone microarchitecture in humans. We obtained iliac crest biopsies from postmenopausal osteoporotic women given daily injections of placebo or 100 Ìg PTH f...