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Effects of clinical mastitis and puerperal diseases on reproductive efficiency of dairy cows

机译：临床乳腺炎和卵巢疾病对奶牛生殖效率的影响

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The objective of this study was to evaluate the effects of clinical mastitis (CM) occurring before or after the first AI postpartum, and puerperal diseases (PD) on the pregnancy per artificial insemination (P/AI), number of AI/conception, and days open (DO) of two different dairy herds (Girolando and Holstein). The CM, PD (retained placenta and metritis), and reproductive data were collected from two dairy farms throughout 1 year. Both farms were located in the southern region of Minas Gerais State, Brazil. One herd was composed of Girolando cows and the other of Holstein cows. Cows were inseminated after estrus detection or submitted to timed AI. Only CM cases (clots in milk accompanied or not by udder inflammation) that occurred before or after first AI postpartum (from calving until 35 days after the first AI) were considered. There were no effects of CM, PD, or both diseases on the reproductive efficiency of the Girolando herd. In the Holstein herd, a reduce P/AI and prolonged DO were verified for those affected by >= 2 CM cases. Holstein cows with CM also required more inseminations to become pregnant. A decrease in the P/AI and an increase in the number of AI/conception and DO were observed in cows of the Holstein herd that developed only CM, only PD, and for those diagnosed with both diseases. In summary, considering that some management differences exist between the two dairy farms, CM occurrence (before or after the first AI postpartum) and puerperal diseases negatively affected the reproductive efficiency of the Holstein herd. However, these diseases did not compromise the reproductive efficiency of the Girolando herd.
机译：本研究的目的是评估临床乳腺炎（CM）在第一个ai产后的临床乳腺炎（cm）和呕吐疾病（pd）的妊娠（p / ai），ai /概念的数量和两个不同乳制牛群（Girolando和Holstein）的日子开放（做）。在整个一年的两个乳制品农场中收集了CM，Pd（保留的胎盘和细胞炎）和生殖数据。两个农场都位于巴西蒙加斯·吉拉斯州南部地区。一群牧群由吉隆隆奶牛和荷斯坦奶牛的彼此组成。奶牛在发情后被授予或提交给定时ai。在第一个AI产后之前或之后只发生了CM案例（伴随乳汁伴随的乳腺肿块）（从第一个AI之后的第35天到35天）发生。没有CM，PD或两种疾病对吉尔兰群的生殖效率的影响。在荷斯坦群中，验证了= 2厘米病例影响的人的降低的P / AI和延长的确实。 Holstein牛配厘米也需要更多的植入怀孕。在荷斯坦群的奶牛的奶牛中观察到P / AI的降低和AI /概念的数量，仅开发CM，仅Pd，以及被诊断出患有这两个疾病的牛。总之，考虑到在两个乳制品农场之间存在一些管理差异，CM发生（在第一个ai产后之前或之后）和卵巢疾病对荷斯坦群的生殖效率产生负面影响。然而，这些疾病并未损害吉尔罗兰群的生殖效率。

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