Izvorni znanstveni članak
https://doi.org/10.5513/JCEA01/18.1.1884
The effectiveness of natural and gonadotropin stimulation of young gilts
Jan DYBAŁA
; UTP University of Science and Technology in Bydgoszcz, Department of Pig Breeding and Horses, ul. Mazowiecka 28, 85-084 Bydgoszcz
Wojciech KAPELAŃSKI
; UTP University of Science and Technology in Bydgoszcz, Department of Pig Breeding and Horses, ul. Mazowiecka 28, 85-084 Bydgoszcz
Joanna WIŚNIEWSKA
; UTP University of Science and Technology in Bydgoszcz, Department of Pig Breeding and Horses, ul. Mazowiecka 28, 85-084 Bydgoszcz
Aleksandra CEBULSKA
; UTP University of Science and Technology in Bydgoszcz, Department of Pig Breeding and Horses, ul. Mazowiecka 28, 85-084 Bydgoszcz
Sažetak
The aim of the study was to compare the effectiveness of stimulation of gilts puberty by natural method and with gonadotropins. The results of reproduction parameters of gilts were also compared. Gilts were also supported by diet with easilly assimilated carbohydrates. The study was carried out on the group of 80 gilts which were divided into 2 groups (A and B) according to the method of inducing puberty: by using mature boar or gonadotropins eCG and hCG. In each group were isolated two subgroups in which gilts were mated in first or second estrus (A1, A2 and B1, B2). The first estrus occured earlier in gilts induced naturally. More numerous litters were obtained from gilts mated in the second estrus independently of method of puberty stimulation. The highest effectiveness of mating was obtained in gilts induced by gonadotropins in second estrus and the lowest also in gilts stimulated by gonadotropins but mated in first estrus. More piglets for 21st day were reared by gilts mated in second estrus independently on puberty induction method.
Ključne riječi
boar presence; estrus; gilts; gonadotropins; puberty
Hrčak ID:
178348
URI
Datum izdavanja:
24.3.2017.
Posjeta: 963 *