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Effect of Feeding on Reproductive Performance in Finnish Dairy Cows
Inflytande av foder på reproduktiva funktioner hos finska mjölkkor
Acta Veterinaria Scandinavica volume 31, pages 453–458 (1990)
Abstract
The effect of 2 types of feeding on the involution of the genital tract and on the fertility was studied in 79 Finnish dairy cows on a research farm. The cows were fed twice a day with home-produced feed in accordance with the Finnish feeding standard. The cows were divided according to the type of feed into a hay-urea group and a silage group. The cows were examined clinically by rectal palpation 3 times a week during 8 weeks postpartum. The time required for the complete involution of uterus and cervix was recorded. The cows in the silage group had a significantly longer time in uterine involution, a lower fertility rate at first insemination and a longer interval from calving to conception than those in the hay-urea group. The pregnancy rate in the first insemination was in the hay-urea group 91 % and in the silage group 57 %. The interval between calving and the first insemination was shorter in the hay-urea group than in the silage group; 71.4 ± 10.6 and 74.0 ± 10.3 days, respectively. The interval between calving and conception was in the hay-urea group significantly (p < 0.01) shorter than in the silage group; 74.8 ± 15.1 and 89.5 ± 24.4 days, respectively.
Sammanfattning
Andamålet med den föreliggande undersökningen var att studera inverkan av foder på reproduktiva funktioner hos flnska mjölkkor. Korna indelades på basis av utfodring i två gruppen en hö-ureagrupp och ensilagegrupp. 79 kor undersöktes genom rektalpalpation 3 gånger per vecka under 8 veckors tid postpartum på en försöksgård. Tiden från kalving till fullständig involution av livmoder och cervix registrerades. Tiden mellan kalving och dräktighet mättes och andelen lyckade dräktigheter vid första insemination uträknades. Typen av foder hade en signifikant betydelse for livmoderns involution, andelen lyckade dräktigheter vid första insemination och tiden mellan kalving och dräktighet.
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Miettinen, P.V.A. Effect of Feeding on Reproductive Performance in Finnish Dairy Cows. Acta Vet Scand 31, 453–458 (1990). https://doi.org/10.1186/BF03547528
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DOI: https://doi.org/10.1186/BF03547528