Abstract：
:The study of factors influencing animal intake can provide a better understanding of the dynamics of the pasture ecosystem and serve as a basis for managing livestock in a more efficient way. We measured different sward surface heights of tall fescue in the process of short-term intake rate of sheep. There was a significant effect of sward surface height on herbage mass (P < 0.001), leaf lamina mass (P < 0.001), other species mass (P = 0.02), bite mass (P = 0.01) and short-term intake rate (P = 0.03) of sheep. There was a quadratic fit between time per bite and bite mass (P = 0.006). Multivariate analysis showed that the short-term intake rate and bite mass were positively correlated (r = 0.97), bite rate and total jaw movement rate were positively correlated but both were negatively correlated with time per bite. The sward surface height of tall fescue corresponding to the maximum short-term herbage intake rate was 22.3 cm. The underlying processes were driven by the bite mass, which was influenced by the leaf lamina bulk density and its consequences upon time per bite. This sward surface height can be adopted as a pre-grazing target for rotational stocking systems to optimize sheep nutrition on pastures.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Szymczak LS,de Moraes A,Sulc RM,Monteiro ALG,Lang CR,Moraes RF,da Silva DFF,Bremm C,de Faccio Carvalho PCdoi
10.1038/s41598-020-68827-0subject
Has Abstractpub_date
2020-07-16 00:00:00pages
11786issue
1issn
2045-2322pii
10.1038/s41598-020-68827-0journal_volume
10pub_type
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