Fermentation of liquid coproducts and liquid compound diets: Part 2. Effects on pH, acid-binding capacity, organic acids and ethanol during a 6-day storage period     

R. H. J. Scholten  M. M. J. A. Rijnen  J. W. Schrama  H. Boer  C. M. C. Van Der Peet-Schwering  L. A. Den Hartog  P. C. Vesseur  & M. W. A. Verstegen 《Journal of animal physiology and animal nutrition》2001,85(5-6):124-134

The effects of a 6-day storage period on changes in pH, acid-binding capacity, level of organic acids and ethanol of three liquid coproducts [liquid wheat starch (LWS), mashed potato steam peel (PSP) and cheese whey (CW)] and two liquid compound diets [liquid grower diet (LGD) and liquid finisher diet (LFD)] were studied. All products, except LWS, showed a significant decrease in pH and acid-binding capacity during storage. At the end of the storage period, all products reached a pH of between 3.5 and 3.9. In general, it can be concluded that the lactic acid content, and to a lesser extent the acetic acid content, increased dramatically during storage. In contrast, the ethanol content increased significantly in the liquid compound diets only. The pattern of changes in pH and organic acids during the 6-day storage period was different between the liquid coproducts and the liquid compound diets. At the start of storage, liquid coproducts are already in the 'middle' of the fermentation process, while liquid compound diets need approximately 24–36 h before fermentation begins. Consequently, in practice a different approach to obtain fermented diets is needed for liquid coproducts and liquid compound diets.  相似文献   

African Swine Fever: Application of Immunoelectroosmophoresis for the Detection of Antibody   总被引：1，自引：1，他引：0       下载免费PDF全文

I. C. Pan  C. J. De Boer    W. R. Hess 《Canadian journal of veterinary research》1972,36(3):309-316

Thirty-three pigs in three groups of nineteen, ten, and four pigs were infected with three different African swine fever (ASF) virus isolates, respectively. All virus isolates were attenuated to varying degrees by passaging in cell cultures, and they retained sufficiently low virulence to produce subacute and chronic infections in pigs. Sera collected at various intervals were tested for antibody activity by the immunoelectroosmophoresis, agar gel diffusion precipitin, and complement-fixation tests using a modified Kolmer technique. Results clearly indicated that the immunoelectroosmophoresis test is a rapid (30 minute) and accurate method with extreme sensitivity and superior to the complement-fixation and agar gel diffusion precipitin tests in detecting antibody against ASF virus. Possible use of this method in detecting ASF virus infection is suggested.  相似文献   

Immunology of African swine fever   总被引：2，自引：0，他引：2  

C J De Boer  I C Pan  W R Hess 《Journal of the American Veterinary Medical Association》1972,160(4):528-532

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Proceedings of C.E.C agricultural research seminars     

H. De Boer 《Livestock Production Science》1976,3(4):397-399

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Hyperaldosteronism in a cat with metastasised adrenocortical tumour     

Rijnberk A  Voorhout G  Kooistra HS  van der Waarden RJ  van Sluijs FJ  IJzer J  Boer P  Boer WH 《The Veterinary quarterly》2001,23(1):38-43

In a 12-year-old male shorthaired cat with attacks of hypokalaemic muscular weakness in spite of oral potassium supplementation, highly elevated plasma aldosterone concentrations in combination with low plasma renin activity pointed to primary hyperaldosteronism. Ultrasonography and computed tomography revealed a large left-sided adrenal tumour growing into the phrenicoabdominal vein and the caudal vena cava. The tumour and its intravascular extension were surgically removed, but the subsequent stenosis of the caudal vena cava caused congestion and renal failure. At autopsy pulmonary micrometastases of the aldosteronoma were found.  相似文献   

In vitro protein digestibility of Artemia decapsulated cysts and nauplii, and of microbound diets for larval fish     

A. García-Ortega  A. Koussoulaki  H. Boer  & J. Verreth 《Aquaculture Research》2000,31(5):475-477

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Emissions of ammonia, nitrous oxide, and methane from aviaries with organic laying hen husbandry     

S.E.M. Dekker  A.J.A. Aarnink  I.J.M. de Boer  P.W.G. Groot Koerkamp 《Biosystems Engineering》2011,110(2):123-133

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水旱轮作制对铬污染土壤的改良效果     

李惠英  邓波儿 《华中农业大学学报》1989,8(3):231-235

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铬(Ⅵ)污染对辣椒产量、品质和养分吸收的影响     

周易勇  刘同仇  邓波儿 《华中农业大学学报》1989,(1)

在栽培辣椒的介质(黄棕壤土培和霍格兰营养液水培)中添加序列浓度的六价铬,根据辣椒的产量、铬累积量、还原糖含量、维生素C含量、辣椒茎叶中钙、镁、铜、锌、铁、锰等营养元素的含量,及其单株吸收量,初步确定了栽培辣椒时土壤中六价铬的适宜浓度为10ppm。  相似文献   

酸性土壤施用铬渣制钙镁磷肥的三价铬控制指标     

刘同仇  邓波儿  杨竹青  冯金安 《华中农业大学学报》1988,(3)

黄棕壤装盆,施用等量氮、磷、钾肥的基础上,再投加用Cr_2(S0_4)_3·6H_2O配制的不同浓度的三价铬,而后种植小麦、水稻、小白菜。根据三种作物产量所受的影响和可食部分的三价铬残留量,并参照有关的卫生标准,建议在酸性土壤施用铬渣钙镁磷肥时,其三价铬的最大投加量是,旱地为100ppm,水田为400ppm。  相似文献