Animal production potential of some new Leucaena accessions in the Markham valley, Papua New Guinea

Galgal, K. K., Shelton, H. M., Mullen, B. F. and Gutteridge, R. C. (2006) Animal production potential of some new Leucaena accessions in the Markham valley, Papua New Guinea. Tropical Grasslands, 40 2: 70-78.


Author Galgal, K. K.
Shelton, H. M.
Mullen, B. F.
Gutteridge, R. C.
Title Animal production potential of some new Leucaena accessions in the Markham valley, Papua New Guinea
Journal name Tropical Grasslands
ISSN 0049-4763
Publication date 2006
Sub-type Article (original research)
Volume 40
Issue 2
Start page 70
End page 78
Total pages 9
Place of publication St Lucia
Publisher Tropical Grassland Society Australia
Collection year 2006
Language eng
Subject 07 Agricultural and Veterinary Sciences
Abstract Signal grass pastures were oversown with four Leucaena spp. planted in hedgerows and evaluated for their agronomic productivity and ability to support steer liveweight gains. Each Leucaena sp. (L. leucocephala, L. pallida, L colli. nst. i., L. trichandra) was planted as seedlings into two I ha paddocks in rows 5 m apart, with I m spacing between trees. Cattle were rotationally grazed on the 2 replicates of each species, as well as on two I ha paddocks of a signal grass on y (Brachiaria decumbens) control, over a 243-day period at a stocking rate of 3 steers/ha. Mean presentation yield and herbage allowance of the Leucaena accessions over the grazing period were highest for L pallida (1100 kg/ha and 0.8 kg DM/kg LW, respectively), followed by L. leucocephala (700 kg/ha and 0.5 kg DM/kg LW), L. collinsii (700 kg/ha and 0.4 kg DM/kg LW) and L. trichandra (300 kg/ha and 0.2 kg DM/kg LW). Despite only moderate presentation yields and herbage allowances, steers grazing L. leucocephala and L. collinsii accessions produced the highest mean liveweight gains (LWG) of 0. and 0.56 kg/hd/d, respectively. While L. pallida produced the highest DM yields, it supported the lowest LWG of 0.36 kg/hd/d. The mean LWGs of steers grazing L. trichandra and the control (grass only) treatments were similar at 0.48 kg/ hd/d. The possible reasons for the differences in steer performance on the different Leucaena accessions are discussed.
Keyword Agriculture, Dairy & Animal Science
Agronomy
Plant Sciences
Q-Index Code C1

 
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