Effect of breed and age on the voluntary intake and the micromineral status of non-pregnant sheep: II. Micromineral status

Twenty-four non-pregnant sheep, divided into four groups of six animals each, were used to test breed (Suffolk and Rambouillet) and age (mature (six years old) and yearling (16 months old) ewes) differences in micromineral status. The animals grazed alternatively two mixed pastures containing Trifol...

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Bibliographic Details
Published in:Small ruminant research 2000-08, Vol.37 (3), p.231-242
Main Authors: Ramı́rez-Pérez, A.H, Buntinx, S.E, Rosiles, R
Format: Article
Language:English
Subjects:
Copper
Iron
Selenium
Sheep
Zinc
Online Access:Get full text
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Summary:Twenty-four non-pregnant sheep, divided into four groups of six animals each, were used to test breed (Suffolk and Rambouillet) and age (mature (six years old) and yearling (16 months old) ewes) differences in micromineral status. The animals grazed alternatively two mixed pastures containing Trifolium repens latum, Lolium perenne and Pennisetum clandestinum from 07:00 to 16:30 hours, and remained penned overnight. Hand-plucked forage samples, blood and wool samples were collected on Days 1 (except forage), 7 (except wool), 21, 35, 49, and 63 of the experiment and assayed for Zn, Fe, Cu, Se, and Mo. Blood and wool data were analyzed as a completely randomized design in a factorial arrangement with repeated measurements. Zinc blood levels (2.15 mg kg −1, below normal values) showed a sampling time×breed interaction ( P
ISSN:0921-4488
1879-0941
DOI:10.1016/S0921-4488(00)00121-8