Such Nikoletta, Csitári Gábor, Stankovics Petra, Wágner László, Koltay Ilona Anna, Farkas Valéria, Pál László, Strifler Patrik, Dublecz Károly
Institute of Physiology and Nutrition, Georgikon Campus, Hungarian University of Agriculture and Life Sciences, Deák Ferenc Street 16, 8360 Keszthely, Hungary.
Institute of Crop Production, Georgikon Campus, Hungarian University of Agriculture and Life Sciences, Deák Ferenc Street 16, 8360 Keszthely, Hungary.
Animals (Basel). 2021 Sep 15;11(9):2703. doi: 10.3390/ani11092703.
Ammonia emission is a concern for the poultry industry from both environmental and animal welfare points of view. The objective of this research was to determine whether probiotics or wheat bran supplementation of broiler diets can modify the N composition of the excreta and the dynamics of ammonia volatilisation emission from the manure. A total of 120-day-old Ross 308 broiler chickens were fed six different diets. The treatments included a corn and soybean meal-based control diet (C) and diets containing wheat bran (WB). Both diets were fed alone and with supplementation of a lactic acid ( LAB) and a butyric acid () producing bacterial strain. Treatment BAB had a significant effect on the dry matter content of the excreta and both probiotics decreased the amount of excreted uric acid. Treatment WB resulted in a significantly lower NH-N concentration of excreta and a tendency toward reduced uric acid content. Treatment LAB reduced the urinary N ratio of excreta. Among dietary treatments, WB resulted in the highest urease producing cell numbers in the excreta, but this difference was not significant. Based on our results, similar to pigs, the soluble fibre fraction of poultry diets can also modify the urinary to faecal N ratio of the excreta.
从环境和动物福利的角度来看，氨气排放是家禽业关注的问题。本研究的目的是确定在肉鸡日粮中添加益生菌或麦麸是否能改变排泄物的氮组成以及粪便中氨气挥发排放的动态。总共120只1日龄的罗斯308肉鸡被饲喂六种不同的日粮。处理包括以玉米和豆粕为基础的对照日粮（C）和含麦麸的日粮（WB）。两种日粮均单独饲喂，并添加产生乳酸（LAB）和丁酸（）的细菌菌株。处理BAB对排泄物的干物质含量有显著影响，两种益生菌均降低了尿酸排泄量。处理WB导致排泄物中NH-N浓度显著降低，且尿酸含量有降低趋势。处理LAB降低了排泄物的尿氮比例。在日粮处理中，WB导致排泄物中产脲酶细胞数量最多，但这种差异不显著。根据我们的结果，与猪类似，家禽日粮中的可溶性纤维部分也可以改变排泄物中尿氮与粪氮的比例。
