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首页> 外文期刊>Tropical Animal Health and Production >Kikuyu pastures associated with tall fescue grazed in autumn in small-scale dairy systems in the highlands of Mexico
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Kikuyu pastures associated with tall fescue grazed in autumn in small-scale dairy systems in the highlands of Mexico

机译：Kikuyu牧场与高大的FESCUE相关联在墨西哥高地的小规模乳制品系统中放牧在秋天

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Intensive grazing increases the profitability and sustainability of small-scale dairy systems by reducing feeding costs. Kikuyu grass is a subtropical species from East Africa that has similar performance compared with temperate grasses when grazed by dairy cows in these systems during the summer rainy season but reduces growth and quality at low temperatures, when temperate species may have an advantage. The objective was to evaluate intensive grazing of kikuyu pastures (KYKY) alone or in association with two varieties of endophyte-free tall fescue, TF-33 (TF33) and Cajun II (CAJN), during the summer-autumn transition period when low temperatures set in, by lactating cows in small-scale dairy farms. Pasture variables were analysed with a split-plot design for sward height, net herbage accumulation and chemical composition, in vitro digestibility of organic matter, and estimated metabolisable energy content of herbage and concentrate. Experimental design for animal variables was a 3 x 3 Latin Square repeated three times with nine Holstein cows and 14 days experimental periods. Cows received 4.65 kg DM/day of a 16% CP commercial concentrate. Milk yield and composition, live weight, and body condition score were recorded. There were no significant differences (P > 0.05) for sward height and net herbage accumulation, nor for important components of chemical composition of herbages. There were no significant differences (P > 0.05) for milk yield (19 kg/cow/day) and composition, although differences (P < 0.05) were detected for live weight and body condition score. The conclusion is that there is no advantage of associating tall fescue with kikuyu in summer-autumn transition period for small-scale dairy systems.
机译：密集放牧通过降低饲养成本来提高小规模乳制品系统的盈利能力和可持续性。 Kikuyu Grass是来自东非的亚热带物种，与在夏季雨季在这些系统中的乳制品奶牛在这些系统中放牧时，牛奶母牛在低温下降低了增长和质量，当温带物种可能具有优势时，与温带草地相似。目的是评估Kikuyu牧场（Kyky）的密集放牧，或者与两种不含内心高的高级FESCUE，TF-33（TF33）和CAJUN II（CAJN）联系，在夏季秋季过渡期间，低温通过在小规模的乳制品农场中哺乳奶牛举行。分析了牧场变量，用碎屑高度，纸浆积累和化学成分，有机物质的体外消化率和植物植物的估计可代谢能量含量和浓缩物的分解变量。动物变量的实验设计是3 x 3拉丁方形，重复三次，九孔牛和14天的实验期。奶牛接受了4.65公斤DM /天的16％CP商业集中力。记录牛奶产量和组成，活重，身体状况得分。草屑高度和净疫篮积累没有显着差异（p> 0.05），也没有用于草本化学成分的重要组成部分。对于牛奶产量（19千克/牛/日）和组成没有显着差异（p> 0.05），但差异（p <0.05）被检测到活体重和身体状况得分。结论是，在小型乳制品系统的夏季过渡期间，没有将高级疲劳与Kikuyu联系起来的优势。

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