98 THE BREEDING OF ANIMALS 



LAMBS 



April, 1806 . 1 



1807 1 



1808 2 



Aprils, 1809 3 



March 29, 1810 3 



Making 6 lambs in 11 months and 26 days 



1811 3 



1812 3 



1813 .3 



1814 .3 



1815 2 



1816 2 



1817 2 



1818 2 



1819 2 



1820 2 



1821 1 



1822 1 



1823 



1824 _0 



Total 36 



Pearl has further called attention to the fact that 

 " the median point in the breeding career of this ewe was 

 8.17 years. That is, she produced one-half of her offspring 

 before and one-half after it." The age of maximum fe- 

 cundity in this ewe was 7.34 years. 



96. Nutrition and fertility. All the physiological 

 activities of an animal are influenced by nutrition. This 

 is particularly the case with the reproductive functions. 

 The fertility of an animal is influenced by the kind and 

 the amount of food consumed. Certain kinds of food 

 have long been believed to affect injuriously the breeding 

 functions of animals. Sugar fed to domestic animals 

 in considerable amounts has apparently had an unfavor- 

 able influence on fertility. 1 Greatly increased activity 



1 Tanner, Journal of Royal Agricultural Society, 1865, p. 267. 



