A comparison of liveweight gain of lambs weaned early onto a herb-clover mixed sward and weaned conventionally onto a ryegrass-clover pasture and herb-clover mixed sward
Autor: | W. E. M. L. J. Ekanayake, R. A. Corner-Thomas, L. M. Cranston, P. R. Kenyon, S. T. Morris |
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Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: | |
Zdroj: | Asian-Australasian Journal of Animal Sciences, Vol 32, Iss 2, Pp 201-208 (2019) |
Druh dokumentu: | article |
ISSN: | 1011-2367 1976-5517 |
DOI: | 10.5713/ajas.18.0301 |
Popis: | Objective The aim of the present study was to identify the impact of early weaning of lambs at approximately seven weeks of age onto a herb-clover mix on the liveweight gain of lambs and their dams. Methods In 2015, twin-born lambs that weighed a minimum of 16 kg (n = 134) were randomly allocated to one of three treatments: i) Early-weaned (58 days after the midpoint of lambing) onto an unrestricted allowance (>1,200 kg dry matter/ha) of herb-clover mix (HerbEW); ii) Lambs+dams unweaned onto an unrestricted allowance of herb-clover mix until conventional weaning (95 days after the midpoint of lambing) (HerbCW); iii) Lambs+ dams unweaned onto an unrestricted allowance of grass-clover pasture until conventional weaning (GrassCW). In 2016, twin-born lambs that weighed a minimum of 16 kg (n = 170) were randomly allocated to one of four treatments: i), ii), iii) (similar to 2015) and iv) Lambs+ dams unweaned onto a restricted allowance (0.05), but were greater than HerbEW lambs. In 2016, HerbCW lambs had greater (p0.05) but were greater (p |
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