Daniel Cézar da Silva, B. Fernandes, J. S. Lima, Bismark Alves da Silva, G. Rodrigues, Evaristo Jorge Oliveira de Souza
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It was found that the properties supplied three types of mineral supplement: a single supplement of NaCl, a supplement of NaCl + mineral base, and a commercial supplement. The cows receiving the commercial mineral supplement had the highest prevalence (10.53%) of the disorder, even showing a significant difference (P < .05) between the other types of supplement. In relation to reproductive period, it was found that the post-partum cows had a higher prevalence of subclinical hypomagnesemia (9.96%) than did the pre-partem cows (8.49%); there was, however, no significant difference (P > .05) between the two. Studies such as this are fundamental for alerting rural and technical producers to the occurrence of subclinical hypomagnesemia in the region, in addition to the damage caused by metabolic disorders.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"21 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Subclinical hypomagnesemia: Prevalence and causes in dairy cows in the semiarid region of the state of Paraíba, Brazil\",\"authors\":\"Daniel Cézar da Silva, B. Fernandes, J. S. Lima, Bismark Alves da Silva, G. 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引用次数: 2
摘要
在奶牛生产过程中,奶牛在过渡时期的代谢发生了重要的变化,特别是高产奶牛,需要更多的营养物质来满足奶牛的需求。本研究的目的是确定在巴西Paraíba州的Sousa微区和s o josa o do里约热内卢do Peixe地区的产奶系统中插入的产前和产后奶牛亚临床低镁血症的患病率。因此,每两周访问34个农村地区,通过静脉穿刺收集357个血液样本,106个来自产前哺乳期奶牛,251个来自产后哺乳期奶牛。结果表明,这些特性提供了三种类型的矿物质补充:NaCl单一补充、NaCl +矿物碱补充和商业补充。饲粮中添加矿物质的奶牛患此病的比例最高(10.53%),与其他类型的饲粮相比差异显著(P < 0.05)。与生育期相关,产后奶牛亚临床低镁血症患病率(9.96%)高于产前奶牛(8.49%);然而,两者之间无显著差异(P < 0.05)。诸如此类的研究对于提醒农村和技术生产者注意该区域发生的亚临床低镁血症以及代谢紊乱造成的损害具有重要意义。
Subclinical hypomagnesemia: Prevalence and causes in dairy cows in the semiarid region of the state of Paraíba, Brazil
ABSTRACT In dairy farming, cows display important metabolic changes during the transition period, particularly high-production cows, which need nutrients in greater quantity to meet the required demand. The aim of this study was to determine the prevalence of subclinical hypomagnesemia in pre- and post-partum dairy cows inserted in milk-production systems in the Sousa microregion and the district of São João do Rio do Peixe, both in the State of Paraíba, Brazil. As such, visits were made every two weeks to 34 rural properties, where the team collected 357 blood samples by venepuncture, 106 from pre-partum lactating cows and 251 from lactating cows in the post-partum period. It was found that the properties supplied three types of mineral supplement: a single supplement of NaCl, a supplement of NaCl + mineral base, and a commercial supplement. The cows receiving the commercial mineral supplement had the highest prevalence (10.53%) of the disorder, even showing a significant difference (P < .05) between the other types of supplement. In relation to reproductive period, it was found that the post-partum cows had a higher prevalence of subclinical hypomagnesemia (9.96%) than did the pre-partem cows (8.49%); there was, however, no significant difference (P > .05) between the two. Studies such as this are fundamental for alerting rural and technical producers to the occurrence of subclinical hypomagnesemia in the region, in addition to the damage caused by metabolic disorders.