B

J 30

HD: y = 39.9 - 47.9* + 20.4x2 - 2.6x3 LD: y = 36.1 - 42.3* + 18.8*2- 2.5x3

0 12 3 4 Time after transport (h)

0 12 3 4 Time after transport (h)

HD: y = 39.9 - 47.9* + 20.4x2 - 2.6x3 LD: y = 36.1 - 42.3* + 18.8*2- 2.5x3

Cubic PC.05

HD: y = 131.6+ 163.4* - 83.0x2 + 11.2*3 LD: y = 124.4 + 341.5* - 180.7*2 + 23.8*3

Cubic PC.05

HD: y = 131.6+ 163.4* - 83.0x2 + 11.2*3 LD: y = 124.4 + 341.5* - 180.7*2 + 23.8*3

c

160

120

e^

80

o

(Z1

o

40

O

HD: y = 159.16 + 33.26* - 18.19*2 LD: y = 153.65 + 34.91* - 16.62*2

Quadratic PC.01

HD: y = 159.16 + 33.26* - 18.19*2 LD: y = 153.65 + 34.91* - 16.62*2

0 12 3 4 Time after transport (h)

High density (HD)

Low Density (LD)

Fig. 2 Regression curves showing (A) cubic trends in plasma Cortisol concentrations, (B) cubic trends in plasma creatine kinase activities (CK), and (C) quadratic trends in plasma glucose concentrations with time after transportation in Spanish goats. (Modified from Ref. 3.) (View this art in color at www.dekker.com.)

of mortalities in goats under feedlot conditions are salmonellosis and bronchopneumonia.1-2-1 Glucocorticoids that are released during stress are known to suppress the immune system. There is evidence that increasing antioxidant status in goats can have beneficial effects on their immune function, particularly during stress.[10]

Common health problems in goats include coccidi-osis and gastrointestinal nematodes (GIN). Parasite management is particularly challenging, because goats quickly develop resistance to common anthelmintics and become reinfected easily when they overgraze the same pasture. However, GIN load does not seem to influence plasma cortisol and glucose concentrations in goats.

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