The effect of dietary protein on reproduction in the mare. I. The composition and evaluation of the digestibility of dietary protein from different sources | Zendy

F.E. Van Niekerk | Zendy; C.H. van Niekerk | Zendy

Open Access

The effect of dietary protein on reproduction in the mare. I. The composition and evaluation of the digestibility of dietary protein from different sources

Author(s) -

F.E. Van Niekerk,

C.H. van Niekerk

Publication year - 1997

Publication title -

journal of the south african veterinary association

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.535

H-Index - 31

eISSN - 2224-9435

pISSN - 1019-9128

DOI - 10.4102/jsava.v68i3.880

Subject(s) - hay , methionine , fish meal , amino acid , lysine , leucine , essential amino acid , biology , food science , protein digestibility , zoology , composition (language) , fodder , chemistry , agronomy , biochemistry , fish <actinopterygii> , linguistics , philosophy , fishery

Four rations that differed in their crude protein and essential amino-acid content were compiled. Digestibility of the crude protein and essential amino-acid contents were determined biologically in a feeding trial using 4 Anglo-Arab stallions. Their respective daily diets were: Diet 1:2 kg cubes, 5 kg tef hay (Eragrostis tef); Diet 2:2 kg cubes, 5 kg lucerne hay (Medicago sativa); Diet 3:2 kg cubes, 5 kg tef hay, 200 g fishmeal; Diet 4:2 kg cubes, 5 kg lucerne hay, 200 g fishmeal. The concentrations of the amino-acids threonine, iso-leucine, leucine and arginine were increased in the total ration when lucerne hay replaced the tef hay while fishmeal supplementation increased the methionine and lysine contents, which provided a wide-range of concentrations of digestible amino-acids in each of the 4 rations.

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