Effect of timing of first clinical mastitis occurrence on lactational and reproductive performance of Holstein dairy cows

Reproductive performance of repeat breeders in dairy herds

“…Reproductive performance of the 613 cows from nine herds which were involved in the current study, including first AI conception rate (38.3%), calving to conception interval (125 AE 3 d), and the proportion that eventually conceived (87.3%), seemed comparable with previous reports [26][27][28]. The incidence of repeat breeding in this study was 14%, ranging from 5 to 24% among nine herds (substantial variation among herds).…”

Inflammatory Mediators and Hormonal Changes in Subclinical and Clinically Affected Mastitis Cows

“…Mastitis not only influence milk production and composition but adversely influence reproductive performance of dairy cows (Schrick et al, 2001;Santos et al, 2004;Hansen et. al., 2004) as homeostatic alterations in hormone viz., prostaglandin, progesterone and estrogen affects oocyte maturation, follicular development, luteal life span, resulting the embryonic losses, increased service period and more number of AI per conception and days open.…”

Relação entre reprodução e produção de bovinos de leite

“…1635, Dezembro, 2013 Segundo Moore et al,1991 um caso clínico de mastite antes do primeiro serviço aumenta o número de dias para a ocorrência do primeiro serviço e, consequentemente, dos dias em aberto comparando-se com animais sadios. O mesmo foi observado por Santos et al (2003), ao constatarem que casos de mastite subclínica que antecedem o 1° serviço geram atraso na manifestação do cio, aumentando o numero de dias para a ocorrencia da concepção.…”