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Field Experiences on Post‐cervical Artificial Insemination in the Sow
Author(s) -
Roberts PK,
Bilkei G
Publication year - 2005
Publication title -
reproduction in domestic animals
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.546
H-Index - 66
eISSN - 1439-0531
pISSN - 0936-6768
DOI - 10.1111/j.1439-0531.2005.00616.x
Subject(s) - estrous cycle , insemination , artificial insemination , semen , zoology , pregnancy , pregnancy rate , biology , gynecology , medicine , andrology , genetics
Contents The present study was performed in order to evaluate the effects of post‐cervical artificial insemination (post‐CAI) in eastern European continental climate with multiparous sows. The sows were randomly allocated into two groups, and were AI by using CAI with 3 × 10 9 spermatozoa per dose (group 1, n = 859) or by post‐CAI, using pooled semen with 1 × 10 9 spermatozoa per dose (group 2, n = 924). Wean‐to‐oestrus intervals, duration of oestrus, day 24 pregnancy rates, farrowing rates, and total pigs born were evaluated. Wean‐to‐oestrus intervals (CAI 114.3 ± 4.1 h; post‐CAI 115.2 ± 5.2 h), duration of oestrus (CAI 64.1 ± 4.1 h; post‐CAI 65.0 ± 5.2 h), day 24 pregnancy rates (CAI 90.2 ± 1.7%; post‐CAI 89.3 ± 1.8%) and farrowing rates (CAI 88.1 ± 2.3%; post‐CAI 87.8 ± 2.9%) did not differ significantly between CAI and post‐CAI inseminated sows. The total number of pigs born differed significantly (p < 0.01) between the groups (CAI 12.3 ± 1.1; post‐CAI 10.2 ± 0.9).