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首页> 外文学位 >Effects of gel teat cleaning and sanitizing on raw milk quality and udder health.
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Effects of gel teat cleaning and sanitizing on raw milk quality and udder health.

机译：凝胶奶嘴的清洁和消毒对原料奶质量和乳房健康的影响。

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摘要

Thirty lactating Holstein cows were divided into three groups of ten each and assigned to three treatments. The first treatment required using a gel teat sanitizer cleaner (GEL) and paper towels, no water to clean teats prior to milking. The second used only water (WASH) and paper towels, and the third used water, paper towels, and predipping (PREDIP) with 0.5% iodophor solution. Individual cow samples of milk were aseptically collected weekly from weigh jars for ten weeks. Bacteria counts were determined. Microorganism counts were also monitored from individual cow teat swabs. Treatment effects on daily milk yield, fat and protein percentages, udder health, milk iodine residue, and parlor efficiency were investigated.;Raw milk microorganism counts were 1184, 2481 and 1119 organisms/ml for GEL, WASH and PREDIP. Teat swab counts were 10388, 28558, and 9205 organisms/ml for GEL, WASH and PREDIP. Preliminary incubation counts were 2048, 4583 and 2527 for GEL, WASH and PREDIP. The GEL and PREDIP counts were lower than WASH counts. No differences existed between all counts of GEL and PREDIP treatments. Treatment effects were similar for production traits: fat percent, protein percent, a.m. milk yield, p.m. milk yield, and daily milk yield. Milk iodine content in WASH was 0.002 and 0.001 ppm lower than GEL and PREDIP, but GEL and PREDIP treatments did not differ.;The GEL group had lower SCC than WASH and PREDIP. There was no clinical mastitis in the GEL group while 17.24 and 10.34% of cows had clinical mastitis in WASH and PREDIP groups. Cultured organisms from the WASH group included Klebsiella specie, Staphylococcus aureus, Streptococcus bovis and Streptococcus dysgalactiae. Pathogens from PREDIP could not be identified in two cases and Escherichia coli was isolated in one case.;Premilking udder preparation time least-squares means were 1.58, 1.10, and 1.77 min for GEL, WASH and PREDIP. Parlor throughputs were 55, 51, and 43 (cows/hr) for GEL, WASH, and PREDIP.;Results showed the GEL procedure to be superior to WASH and PREDIP methods of premilking udder preparation.
机译：将30头泌乳荷斯坦奶牛分成三组，每组十只，并分配给三种处理。第一次治疗需要使用凝胶奶头消毒清洁剂（GEL）和纸巾，挤奶前不用水清洗奶头。第二个仅使用水（WASH）和纸巾，第三个使用水，纸巾和含0.5％碘伏溶液的预浸（PREDIP）。每周从称重罐中无菌收集牛奶的牛奶样本，持续十周。确定细菌计数。还从单个奶嘴拭子中监测微生物计数。研究了处理对日产奶量，脂肪和蛋白质百分数，乳房健康，乳碘残留和客厅效率的影响。GEL，WASH和PREDIP的生乳微生物计数分别为1184、2481和1119个生物/ ml。对于GEL，WASH和PREDIP，乳头拭子计数为10388、28558和9205个生物/ ml。 GEL，WASH和PREDIP的初步孵化计数为2048、4583和2527。 GEL和PREDIP计数低于WASH计数。 GEL和PREDIP治疗的所有计数之间没有差异。生产特性的处理效果相似：脂肪百分比，蛋白质百分比，上午产奶量，下午牛奶产量和每日牛奶产量。 WASH中的牛奶碘含量比GEL和PREDIP分别低0.002和0.001 ppm，但GEL和PREDIP处理没有差异。GEL组的SCC低于WASH和PREDIP。 GEL组无临床乳腺炎，而WASH和PREDIP组则有17.24％和10.34％的母牛患有临床乳腺炎。 WASH组的培养生物包括克雷伯菌，金黄色葡萄球菌，牛链球菌和dysgalactocae。在2例中无法鉴定出PREDIP的病原体，在1例中分离出了大肠埃希菌。GEL，WASH和PREDIP的预挤乳制品制备时间的最小二乘均值分别为1.58、1.10和1.77分钟。 GEL，WASH和PREDIP的客厅吞吐能力分别为55、51和43（牛/小时）。结果表明，GEL程序优于WASH和PREDIP的预乳制乳房方法。

著录项

  • 作者

    Ingawa, Kasimu Hudu.;

  • 作者单位

    Louisiana State University and Agricultural & Mechanical College.;

  • 授予单位 Louisiana State University and Agricultural & Mechanical College.;
  • 学科 Agriculture Animal Culture and Nutrition.
  • 学位 Ph.D.
  • 年度 1990
  • 页码 117 p.
  • 总页数 117
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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