312 Maine; agriculturai, experiment station. 1913. 





°*^^ PAREh 



TiRF d' 







Mating No. 





9 





No 



Date op 



SEX 



s:zT„'oi 



EXPER. 



AUT. 



REMARKS 



































































a 

















s 

















B 

















Z 

















< 



s 

















































































































































Fig. 147. dilating record sheet. 



At the top of this sheet there is space for the date on which 

 the mating was made ; a record of the individual numbers of 

 the male and female entering into this mating and the mating 

 number. Below are spaces for recording each offspring. The 

 number, date of birth and sex of each offspring are entered at 

 the time the young animal is given its ear tag. Spaces are also 

 provided for giving references to its subsequent histor3^ 



Guinea-pigs have from one to four or more young in a litter. 

 If the same mating is continued we stamp below the number 

 of the last offspring the date at which the female was again 

 placed with the male and the subsequent litter is recorded below. 

 If the female is mated with another male this mating receives 

 a new number and is recorded on another page. All the mating 

 numbers of any individual are recorded on its description sheet. 



Still born or aborted offspring are recorded with the date 

 and sex but are not given individiral numbers. 



The mating sheets are arranged in the binder in consecutive 

 order so that if we are referred to mating number 79 we can 

 at once turn to this page. 



