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Research, Policy and Practice

Table 2 Botanical composition of the goats’ diet and the proportion of relative frequency of each forage item. Metabolizable energy, protein content and digestibility in 2010, 2011 and 2012 winter 

From: Are winter rangelands enough to satisfy the nutritional requirements of late-gestation transhumant goats in Patagonia?

Species in diet 2010 2011 2012
Relative frequency of each forage item, % ME, Mcal/kg DM CP, % Digestibility, % Relative frequency of each forage item, % ME, Mcal/kg DM CP, % Digestibility, % Relative frequency of each forage item, % ME, Mcal/kg DM CP, % Digestibility, %
Grasses
Alopecurus sp. 0 0 0 0 4.39 0.08 0.40 2.37 0 0 0 0
Bromus sp. 1.42 0.03 0.22 0.93 2.70 0.06 0.41 1.77 0 0 0 0
Distichlis sp. 0 0 0 0 1.01 0.02 0.03 0.45 0 0 0 0
Panicum sp. 1.07 0.02 0.10 0.58 0 0 0 0 0 0 0 0
Poa sp. 6.41 0.15 0.51 4.15 20.61 0.48 1.65 13.33 5.92 0.14 0.47 3.83
Rytidosperma sp. 3.91 0.09 0.59 2.56 0.68 0.02 0.10 0.44 0.70 0.02 0.11 0.46
Sporobolus sp. 0 0 0 0 0 0 0 0 2.44 0.03 0.14 0.83
Pappostipa sp. 20.64 0.36 1.67 10.15 31.42 0.54 2.55 15.46 32.75 0.57 2.65 16.11
Trisetum sp. 0 0 0 0 3.04 0.06 0.28 1.64 0 0 0 0
Total grasses 33.45 0.65 3.09 18.36 63.85 1.26 5.41 35.46 41.81 0.75 3.37 21.23
Shrubs
Acantholippia sp. 3.20 0.05 0.21 1.40 0 0 0 0 0.70 0.01 0.05 0.31
Adesmia campestris 0 0 0 0 1.69 0.04 0.14 1.10 0 0 0 0
Anarthrophyllum sp. 0 0 0 0 0.34 0.01 0.04 0.15 0 0 0 0
Atriplex sp. 16.73 0.36 2.93 10.04 0 0 0 0 0 0 0 0
Chuquiraga sp. 20.64 0.30 1.32 8.28 2.70 0.04 0.17 1.08 22.30 0.32 1.43 8.94
Cyclolepis sp. 1.42 0.02 0.07 0.69 0 0 0 0 0 0 0 0
Discaria nana 1.78 0.03 0.16 0.86 0 0 0 0 0 0 0 0
Ephedra sp. 3.56 0.05 0.17 1.51 13.18 0.20 0.65 5.59 3.48 0.05 0.17 1.48
Hyalis argentea 2.49 0.05 0.17 1.53 1.69 0.04 0.11 1.04 5.23 0.12 0.36 3.22
Junellia sp. A 0 0 0 0 1.69 0.03 0.19 0.89 0 0 0 0
Larrea sp. 6.76 0.14 1.16 4.04 1.01 0.02 0.17 0.60 9.76 0.21 1.67 5.83
Maihuenia sp. 0 0 0 0 0 0 0 0 4.53 0.05 0.07 1.36
Azorella prolífera 0.36 0.01 0.01 0.15 0 0 0 0 0 0 0. 0
Nardophyllum sp. B 0 0 0 0 0 0 0 0 1.05 0.02 0.05 0.51
Nassauvia sp. 1.42 0.02 0.07 0.42 0 0 0 0 0.35 0 0.02 0.10
Prosopidastrum sp. 0 0 0 0 0 0 0 0 2.79 0.04 0.33 1.20
Prosopis denudans 0 0 0 0 1.35 0.02 0.15 0.53 0 0 0 0
Schinus sp. 7.83 0.13 0.65 3.59 11.15 0.18 0.93 5.11 7.32 0.12 0.61 3.35
Senecio sp 0 0 0 0 0.34 0.01 0.08 0.24 0 0 0 0
Total shrubs 66.19 1.16 6.91 32.49 35.14 0.58 2.62 16.33 57.51 0.94 4.74 26.30
Forbs
Acaena sp. 0 0 0 0 0 0 0 0 0.35 0.01 0.02 0.19
Cerastium sp. 0 0 0 0 0.34 0.01 0.04 0.20 0 0 0 0
Erodium cicutarium 0 0 0 0 0.68 0.02 0.11 0.44 0 0 0 0
Perezia sp. 0.36 0.01 0.02 0.20 0 0 0 0 0 0 0 0
Rumex sp. 0 0 0 0 0 0 0 0 0.35 0.01 0.07 0.20
Total forbs 0.36 0.01 0.02 0.20 1.02 0.02 0.15 0.63 0.70 0.01 0.09 0.39
Total 100.00 1.82 10.03 51.06 100.01 1.87 8.18 52.42 100.02 1.70 8.20 47.92