Use of sows and the reasons of sorting them out in specialized stock farms
1984
Okularczyk, S. (Wojewodzki Osrodek Postepu Rolniczego, Krakow-Karniowice (Poland))
It was stated that the number of sows in the herd in individual specialized stock farms influenced on the fecundity, fertility, lactation and body mass of young pigs. The lowest percentage was in the herds comprising 10 or less sows. The main reason of culling the sows was sterility or low fecundity
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书目信息
页码
pp. 111-127
其它主题
Lactacion; Fecondite; Lechon; Numero de cabezas; Selection/ exploitation agricole familiale; Seleccion/ explotacion agricola familiar
语言
抛光
注释
41 ref. Summaries (De, En, Ru)
类型
Summary
1986-08-15
AGRIS AP