In order to study how MTL affecte alpaca fleece growth at the slowest growth period of fleece (2～5 month), 12 pregnant alpacas were injected melatonin (MLT) by 0、 50、100、150 mg from Feb to May. The results showed that MTL caused diameter and stretched length increased significantly. During the experiment the fleece growth rate in treated groups was increased significantly, but MTL had no effects on picking amount and percentage of scoured wool rate. Above all, MTL played a great role in increasing alpaca fleece growth and 100mg was the best dosage.
more »