6Sharon P,Mason,Susan J.Individual differences in re- sponses of piglets to weaning at different ages. Applied Animal Behaviour Science . 2003
7Mason S P,Jarvis S,Lawrence A B.Individual differences in responses of piglets to weaning at different ages. Applied Animal Behaviour Science . 2003
8Koketsu Y,Dial G D.Interactions between the associa- tions of parity,lactation length,and weaning—to—con- ception interval with subsequent litter size in swine herds using early weaning. Preventive Veterinary Medicine . 1998
9O’Connell N E,Beattie E,Sneddonb A,et al.Influence of individual predisposition maternal experience and lactation environment on the responses of pigs to weaning at two different ages. Applied Animal Behaviour Science . 2005
10Koketsu Y.Assessment of sows mating efficacy during the low productive period after early weaning:afield study. Theriogenology . 1999
