Effect of postpartum drenching on plasma parameters of cows at a large-scale dairy farm.

IF 0.7 4区农林科学 Q3 VETERINARY SCIENCES Acta veterinaria Hungarica Pub Date : 2023-11-24 Print Date: 2024-01-09 DOI:10.1556/004.2023.00921

Lea Lénárt, András Horváth, Tamás Kis, Dávid Buják, Ottó Szenci

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Abstract

The aim of the present study was to explore the influence of postpartum drenching with a feed additive on the plasma concentration of biochemical parameters while factoring in prepartum rumination times (RT). One hundred and sixty-one cows were fitted with a Ruminact© HR-Tag approximately 5 days before calving. Drenching and control groups were established based on calving dates. Animals in the drenched group were treated three times (Day 1/day of calving/, Day 2, and Day 3 postpartum) using a feed additive containing calcium propionate, magnesium sulphate, yeast, potassium chloride and sodium chloride mixed in approximately 25 L of lukewarm tap water. Blood samples were collected on Days 1, 2, 3, 7 and 12. Cows with below the average RT were categorised as "low rumination" and those above it as "high rumination" animals. Drenching decreased the plasma concentrations of total protein, urea and creatinine and increased the levels of alanine aminotransferase (ALT), gamma-glutamyl transferase (GGT) and chloride. Low rumination time prepartum resulted in higher concentrations of beta-hydroxybutyrate, total protein and activities of alkaline phosphatase and GGT, while it decreased the activity of ALT and the concentrations of calcium, magnesium, sodium and potassium. The day of lactation had an effect on all parameters except for potassium.

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某大型奶牛场产后淋雨对奶牛血浆参数的影响

本研究旨在探讨在考虑孕前反刍时间(RT)的情况下，产后用饲料添加剂浸泡对血浆生化参数浓度的影响。161头奶牛在产犊前约5天植入反刍动物©HR-Tag。根据产犊日期分别建立淋淋组和对照组。浸泡组分别在产犊第1天、产后第2天和产后第3天使用含有丙酸钙、硫酸镁、酵母、氯化钾和氯化钠的饲料添加剂，在约25 L的温水中混合。于第1、2、3、7、12天采集血样。低于平均反刍率的奶牛被归类为“低反刍”，高于平均反刍率的奶牛被归类为“高反刍”动物。淋雨降低了血浆总蛋白、尿素和肌酐浓度，升高了丙氨酸转氨酶(ALT)、γ -谷氨酰转移酶(GGT)和氯化物水平。较短的反刍准备时间提高了β -羟基丁酸盐浓度、总蛋白浓度、碱性磷酸酶和GGT活性，降低了ALT活性和钙、镁、钠、钾浓度。除钾元素外，泌乳天数对其他指标均有影响。

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来源期刊

Acta veterinaria Hungarica 农林科学-兽医学

CiteScore

1.80

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： Acta Veterinaria Hungarica publishes original research papers presenting new scientific results of international interest, and to a limited extent also review articles and clinical case reports, on veterinary physiology (physiological chemistry and metabolism), veterinary microbiology (bacteriology, virology, immunology, molecular biology), on the infectious diseases of domestic animals, on veterinary parasitology, pathology, clinical veterinary science and reproduction.