USE OF ANNUAL PLANTS IN CALIFORNIA FOOTHILLS 



33 



Table 8. — Average initial weights, final weights, and gains of cows from 

 both the supplemented and unsupplemented herds grazed in six pastures, 

 1937-43 1 



Pasture 

 number 



Degree of grazing 



Cows from supple- 

 mented "A" herd 



Cows from unsupple- 

 mented "B" herd 





Initial 

 weight 



Final 

 weight 



Gain 



Initial 

 weight 



Final 

 weight 



Gain 



3 

 1 

 5 

 4 

 6 

 2 



Close 



Moderate to close 



Moderate 



Light to moderate 



Light 



_.__do 



Pounds 

 838 



857 



872 



869 



871 



819 



Pounds 

 939 



1,002 



1,016 



1,023 



1,032 



1,023 



Pounds 

 101 



145 



144 



154 



161 



204 



Pounds 

 725 



701 



754 



733 



766 



717 



Pounds 

 868 



877 



978 



927 



1,026 



937 



Pounds 

 143 



176 



224 



194 



260 



220 



1 Source: Hart, Wagnon, and Guilbert (4). 



Table 9. — Percentage pregnancies and percentage calf crop of cows from 

 both the supplemented and unsupplemented herds grazed in six pastures, 

 1937-A3 * 



Pasture 

 number 



Degree of grazing 



Cows from supple- 

 mented "A" herd 



Cows from unsupple- 

 mented "B" herd 





Preg- 

 nancies 



Calf crop 



Preg- 

 nancies 



Calf crop 



3 



Close _ __ 



Percent 

 91.4 



89.2 



Percent 

 82.8 



78.4 



Percent 

 65.0 



70.6 



Percent 

 60.0 



1 



Moderate to close 



61.8 



5 



Moderate 



86.5 



86.5 



83.3 



77.8 



4 



Light to moderate 



97.4 



89.5 



85.7 



77.1 



6 



Light _ _ 



88.2 



79.4 



80.0 



72.5 



2 



____do 



95.0 



82.5 



85.3 



73.5 



1 Source: Hart, Wagnon, and Guilbert (<£). 



pasture 1 under moderate-to-close grazing than in more lightly grazed 

 pastures. Variations in cow gains among the other four pastures, grazed 

 from moderate to light, were not related to degree of grazing. Part of 

 the variation was caused by differences between pastures in the amount 

 of steep south slope, where the forage grew faster in late winter and dried 

 earlier in the spring. 



