Measurement of endogenous amino acid losses in poultry     

P. Siriwan  W. L. Bryden  Y. Mollah  E. F. Annison 《British poultry science》1993,34(5):939-949

1. Ileal endogenous amino acid losses were determined in broiler chickens and in cannulated cross‐bred layer strain cockerels using either a nitrogen‐free diet, regression analysis or a 48 h fast.

2. Endogenous amino acid flows to the ileum in fasted cockerels were significantly lower than those obtained both by feeding the nitrogen‐free diet, and from regression analysis in either broilers or cockerels. Regression analysis gave the highest flows.

3. The apparent digestibility coefficients of amino acids in a diet containing 200 g/kg crude protein were lower in broilers (0.84) than in cockerels (0.88). When corrected, by regression analysis, for the contribution of endogenous amino acids, the true digestibility coefficients became 0.90 and 0.92 respectively.  相似文献   

Versatility of the Angularis Oris Axial Pattern Flap for Facial Reconstruction          下载免费PDF全文

Sara L. Losinski  Bryden J. Stanley  Sandra P. Schallberger  Laura L. Nelson  Heather A.M. Towle Millard 《Veterinary surgery : VS》2015,44(8):930-938

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Secretion of Homoarginine into the Gut of Chickens     

Angkanaporn  K.  Ravindran  V.  Mollah  Y.  Bryden  W.L. 《Veterinary research communications》1997,21(3):161-167

Angkanaporn, K., Ravindran, V., Mollah, Y. and Bryden, W.L., 1997. Secretion of homoarginine into the gut of chickens. Veterinary Research Communications, 21(3), 161-167A technique, based on the homoarginine present in guanidinated proteins, has been used to distinguish between endogenous secretions and exogenous dietary amino acids in the ileal digesta of monogastric animals. This technique assumes that the ingested homoarginine is not recycled into the small intestine after absorption, but this assumption is yet to be experimentally validated in chickens. The secretion of homoarginine into the gut of broilers that were intravenously infused with 20 and 40 mmol/L homoarginine solutions was assessed. The plasma concentrations of homoarginine increased with increasing concentrations of homoarginine infused. However, only negligible levels of homoarginine (7.0 to 45.2 µg/g dry matter) were found in the digesta. Less than 0.01% of the intravenously infused homoarginine was recovered in the intestinal digesta, indicating that the secretion of homoarginine into the gut of chickens was insignificant.  相似文献   

Observed flow compensation associated with the MOC at 26.5 degrees N in the Atlantic   总被引：3，自引：0，他引：3  

Kanzow T  Cunningham SA  Rayner D  Hirschi JJ  Johns WE  Baringer MO  Bryden HL  Beal LM  Meinen CS  Marotzke J 《Science (New York, N.Y.)》2007,317(5840):938-941

The Atlantic meridional overturning circulation (MOC), which provides one-quarter of the global meridional heat transport, is composed of a number of separate flow components. How changes in the strength of each of those components may affect that of the others has been unclear because of a lack of adequate data. We continuously observed the MOC at 26.5 degrees N for 1 year using end-point measurements of density, bottom pressure, and ocean currents; cable measurements across the Straits of Florida; and wind stress. The different transport components largely compensate for each other, thus confirming the validity of our monitoring approach. The MOC varied over the period of observation by +/-5.7 x 10(6) cubic meters per second, with density-inferred and wind-driven transports contributing equally to it. We find evidence for depth-independent compensation for the wind-driven surface flow.  相似文献   

Heat Transport by Currents Across 25{degrees}N Latitude in the Atlantic Ocean     

Bryden HL  Hall MM 《Science (New York, N.Y.)》1980,207(4433):884-886

The heat transported by currents across 25 degrees N in the Atlantic Ocean is estimated from oceanographic measurements to be 1.1 x 10(15) watts northward. This figure agrees, within estimated error, with the value obtained from charts of energy exchange between ocean and atmosphere but is smaller by a factor of 2 than the recent value derived from satellite radiation measurements.  相似文献   

Temporal variability of the Atlantic meridional overturning circulation at 26.5 degrees N   总被引：4，自引：0，他引：4  

Cunningham SA  Kanzow T  Rayner D  Baringer MO  Johns WE  Marotzke J  Longworth HR  Grant EM  Hirschi JJ  Beal LM  Meinen CS  Bryden HL 《Science (New York, N.Y.)》2007,317(5840):935-938

The vigor of Atlantic meridional overturning circulation (MOC) is thought to be vulnerable to global warming, but its short-term temporal variability is unknown so changes inferred from sparse observations on the decadal time scale of recent climate change are uncertain. We combine continuous measurements of the MOC (beginning in 2004) using the purposefully designed transatlantic Rapid Climate Change array of moored instruments deployed along 26.5 degrees N, with time series of Gulf Stream transport and surface-layer Ekman transport to quantify its intra-annual variability. The year-long average overturning is 18.7 +/- 5.6 sverdrups (Sv) (range: 4.0 to 34.9 Sv, where 1 Sv = a flow of ocean water of 10(6) cubic meters per second). Interannual changes in the overturning can be monitored with a resolution of 1.5 Sv.  相似文献   

Surgical amputation of a digit and vacuum-assisted-closure (V.A.C.) management in a case of osteomyelitis and wound care in an eastern black rhinoceros (Diceros bicornis michaeli)     

Harrison TM  Stanley BJ  Sikarskie JG  Bohart G  Ames NK  Tomlian J  Marquardt M  Marcum A  Kiupel M  Sledge D  Agnew D 《Journal of zoo and wildlife medicine》2011,42(2):317-321

A 14-yr-old female eastern black rhinoceros (Diceros bicornis michaeli) presented with progressive suppurative osteomyelitis in her left hind lateral toe. beta-Hemolytic Streptococcus sp. was isolated. The animal was treated with multiple systemic antibiotics, and topical wound cleansing. Repeated debridements and nail trimmings were performed for 5 mo prior to electing amputation. The toe was surgically amputated under general anesthesia between the first and second phalanges. Analgesia was diffused into the wound topically via a catheter and elastomeric pump. The open amputation site was covered with adherent drapes and a negative-pressure wound therapy device provided vacuum-assisted closure (V.A.C.) for 72 hr. Three months later this animal developed a deep dermal ulcer on the lateral aspect of the right hind limb, at the level of the stifle. Methicillin-resistant Staphylococcus aureus was isolated. The wound was managed by initial daily lavage, followed by 1 mo of V.A.C. therapy, with 72 hr between dressing changes. Clinically, this therapy expedited the formation of healthy granulation tissue and overall healing was accelerated. The animal tolerated the machine and bandage changes well via operant conditioning. The use of negative-pressure wound therapy appeared to shorten time to resolution of slow-healing wounds in black rhinoceros.  相似文献   

Concentration, insulin potentiation, and absorption of chromium in beer     

R A Anderson  N A Bryden 《Journal of agricultural and food chemistry》1983,31(2):308-311

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Clarification of the relationship between digestible starch content and the metabolisable energy of Australian wheats     

E. F. Annison  D. Balnave  W. L. Bryden  Y. Mollah  A. M. Rogel 《British poultry science》1987,28(4):781-788

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CONTROL OF CHRYSANTHEMUM EELWORM BY PARATHION     

J. W. Bryden  W. E. H. Hodson 《Plant pathology》1957,6(1):20-24

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