Proceedings of the New Zealand Society of Animal Production 1994.
54: 143-146
Proceedings of the New Zealand Society of Animal Production 1994.
54: 143-146
Daily plasma prolactin concentrations at 1200 hours measured across the 14 days of treatment were 612±32, 73±35, and 60±34 ng/ml in INJ, OSP and C groups respectively (P<0.001), while daily plasma PRL concentrations at 1000 hours, immediately prior to the injection, were 33±6, 72±7 and 60±8 ng/ml in INJ, OSP and C groups respectively (P<0.01).
Mean downlength was lower in INJ goats (34±4mm) than OSP goats (51±4mm) and C goats (46±4mm). A greater percentage of fleece by weight was shed earlier (P<0.05) in INJ compared to the C group. Primary follicle activity also increased earlier (P<0.001) in INJ goats when compared to C and OSP goats. There was no effect of OSP on fibre growth and no overall effect of INJ on guard hair length, shedding score, presence of newly erupted cashmere fibres, and secondary follicle activity.
In conclusion, DOM administered at 2.5 mg/day for 14 days by injection, but not by osmotic pump, perturbed fibre growth in primary and not secondary follicles.
Keywords: NZSAPAB; Domperidone; subcutaneous injection; osmotic minipump; prolactin; cashmere; follicle activity.
