...As inchickens, it is of course desirable to use these betterlayers as breeders since the purpose in keeping thiskind of duck is primarily egg production... 
Harry M. Lamon 「Ducks and Geese」
...It is well, therefore, in makingthe mating to select breeders with good lengthof body...
Harry M. Lamon 「Ducks and Geese」
...It is necessary to guardagainst birds as breeders which have a rusty brownlacing on the breast and under the wings, also thosewhich have a wing-bow laced with brown...
Harry M. Lamon 「Ducks and Geese」
...Indeed, birdswithout the white on the breast and with very little onthe wing are valuable breeders since there is a tendencyfor too much white to occur in the plumage...
Harry M. Lamon 「Ducks and Geese」
...Since black disqualifies it is impossible to showyoung ducks in this condition but these black feathersusually come in white after the moult and suchbirds need not therefore be discarded as breeders...
Harry M. Lamon 「Ducks and Geese」
...Sometimes,however, birds having more or less blackthroughout the plumage are used as breeders for thepurpose of strengthening the blue color...
Harry M. Lamon 「Ducks and Geese」
...Greenish or mottled bills must be avoidedin ducks which are to be used as breeders...
Harry M. Lamon 「Ducks and Geese」
...Avoid as breeders ducksof both sexes that are too heavy behind, or in otherwords, are too heavy-bottomed...
Harry M. Lamon 「Ducks and Geese」
...In other words, the breeders are kept onlythrough their first laying season...
Harry M. Lamon 「Ducks and Geese」
...Therefore, since it is desired to keep up themaximum egg production in order to raise as manymarket ducks as possible, young breeders are consideredbetter...
Harry M. Lamon 「Ducks and Geese」
...The breeders areusually selected from the ducklings which reachmarket age from the last week in June through July...
Harry M. Lamon 「Ducks and Geese」
...Many different styles of houses are used for breeders,some of which are decidedly more elaborate thanis necessary...
Harry M. Lamon 「Ducks and Geese」
...Formerly it was theconsensus of opinion that breeders needed water inwhich they could swim in order to keep in goodbreeding condition and to give the best results infertility of the eggs...
Harry M. Lamon 「Ducks and Geese」
...Feeding the Breeders...
Harry M. Lamon 「Ducks and Geese」
...It is usualpractice to feed the breeders last in the morningand first at night...
Harry M. Lamon 「Ducks and Geese」
...That is a great saving of food,as those for market should be fed much more than the breeders at thisseason—say during the months of September, October and November...
A. R. Harding 「Fur Farming」
..."My experience does not coincide with that of some other breeders inrespect to the weakening of reproductive powers of deer by theconfinement in parks...
A. R. Harding 「Fur Farming」
..."The Siamese cats are very prolific breeders, having generally five ateach litter, and three litters a year...
Harrison Weir 「Our Cats and All About Them」
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