Regulatory Expression of Peroxisome Proliferator Activated Receptors Genes During Fatty Liver Formation in Geese

In order to investigate the expression pattern of peroxisome proliferator activated receptor （PPAR） genes before and after overfeeding, and estimate the effect of expressed PPAR levels on weights of fatty liver and abdominal fat in geese, the RT-PCR products of PPAR genes in heart, liver, spleen, lung, kidney, stomach, small intestine, brain, breast muscle, leg muscle, and abdominal fat were determined before and after overfeeding. RT-PCR was used to determine the expression levels of PPAR genes. Quantity one software was used to analyze absorbency, and the expression level of GAPDH gene was used as contrast. Expression levels of PPAR-α were relatively high in most of detected tissues but undetectable in abdominal fat tissue before overfeeding, and the level was evidently increased in lung, appeared in abdominal fat tissue, and reduced in the other tissues after overfeeding. Expressed PPAR-γ levels were relatively high in liver, spleen, lung, small intestine, and abdominal fat, and relatively low in the other tissues before overfeeding. Expressed PPAR-γ levels were enhanced in liver, spleen, lung, stomach, and kidney but decreased in abdominal fat and without obvious changes in the other tissues. Expression patterns of PPAR genes show tissue-specific manner. In addition, expression patterns of PPAR-α are different from PPAR-γ after overfeeding. It might suggest that different functions of PPAR subtypes are responsive to overfeeding.

氯化钙溶液喷淋对鹅舍湿度的影响

为研究喷淋氯化钙溶液对鹅舍湿度的影响,试验采用浓度为37%的氯化钙溶液在鹅舍外喷淋,在不同风速下测定鹅舍内湿度变化情况。结果表明,在舍外空气湿度为81.2%的情况下,舍内风速为0.7 m/s时,舍内湿度为68.3%,较舍外湿度下降了15.89%;舍内风速为1.5 m/s时,舍内湿度为71.1%,较舍外湿度下降了12.44%。可见,氯化钙溶液喷淋可以降低鹅舍内湿度。