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首页> 美国卫生研究院文献>Springer Open Choice >Phosphorus calcium and magnesium contents of pasture and their effect on body condition scores and body mass of communal cattle depending on natural pasture of Mogosane Village of the North-West Province South Africa
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Phosphorus calcium and magnesium contents of pasture and their effect on body condition scores and body mass of communal cattle depending on natural pasture of Mogosane Village of the North-West Province South Africa

机译：根据南非西北省Mogosane村的天然牧场牧场中磷钙和镁的含量及其对公牛体况评分和体重的影响

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This research was conducted to determine the effects of phosphorus (P), calcium (Ca), and magnesium (Mg) content in pasture with body weight and body condition scores in cattle depending entirely on natural grazing. The work was done in 2006 in Mogosane Village of North-West Province, South Africa, and it was conducted from March 2006 to March 2007, with the annual rainfall of 384.38 mm maximum. A total of 25 growing mixed breed cattle aged between 6 months and 2 years old were selected randomly from a herd feeding exclusively on communal grazing. Animals were depending on natural pasture, with no supplements given. Records of body mass (BM) and body condition score (BCS) were recorded from a diverse range of animals in order to include as many different body masses and body condition scores as possible. Mean BM and BCS values are reported but there were no significant (P > 0.05) differences between months. Possible reasons are given in the “Results and Discussion” section. The focus of the research reported here was on the changes in the P, Ca, and Mg concentrations of pasture. Pasture samples were collected once a month for analysis to determine the contents of P, Ca, and Mg. Mineral concentrations in the pasture increased significantly (P < 0.05) with rainfall in January 2007, February 2007, and March 2007, and in January 2007 and February 2007, the mean values of BCS (3.90) and BM (444.05 kg) increased. After the good rains in March 2006 and April 2006, there were significant (P < 0.05) decreases in grass P and Mg in the following dry months along with decreases in BCS and BM. There were subsequent significant (P < 0.05) increases in grass P and Mg following rains in August 2006 through January 2007. Grass Ca followed a much different pattern compared with that of P and Mg with significant (P < 0.05) increases after periods of little or no rainfall. Mineral concentrations (P, Ca, and Mg) of grass in this research were significantly (P < 0.05) influenced by the rainfall making it imperative that mineral supplementation be given to animals in the dry periods.
机译：进行这项研究是为了确定牧场中磷（P），钙（Ca）和镁（Mg）含量对牛的体重和身体状况评分的影响，这完全取决于自然放牧。该工作于2006年在南非西北省的Mogosane村完成，工作于2006年3月至2007年3月进行，年降雨量最大为384.38毫米。从仅以公共放牧为食的牛群中随机选择了25头年龄在6个月至2岁之间的正在生长的混种牛。动物依靠天然牧场，没有补充营养。为了涵盖尽可能多的不同体重和身体状况评分，从各种动物中记录了体重（BM）和身体状况评分（BCS）的记录。据报道平均BM和BCS值，但两个月之间没有显着差异（P> 0.05）。可能的原因在“结果与讨论”部分中给出。此处报道的研究重点是牧场中P，Ca和Mg浓度的变化。每月收集一次牧场样品以进行分析，以确定P，Ca和Mg的含量。牧场中的矿物质浓度随2007年1月，2007年2月和2007年3月以及2007年1月和2007年2月的降雨显着增加（P <0.05），BCS（3.90）和BM（444.05 kg）的平均值增加。在2006年3月和2006年4月的强降雨之后，接下来的干旱月份中草中的P和Mg显着下降（P <0.05），而BCS和BM则下降。随后在2006年8月至2007年1月的降雨之后，草中的P和Mg显着增加（P <0.05）。草钙与P和Mg的生长方式有很大不同（P <0.05）。或没有降雨。本研究中草的矿物质浓度（P，Ca和Mg）受到降雨的显着影响（P（<0.05），因此必须在干旱时期对动物补充矿物质。

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