Pilot study to quantify the time to clear dexamethasone from plasma and urine of adult horses following a single nebulisation     

NE Symonds  AJ Dart  J Keledjian  M Liu Lau  LC Ennis  VC McIver  AS Tsang  SA Biasutti  LB Jeffcott 《Australian veterinary journal》2019,97(5):144-148

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Red‐light stimulation of boar semen prior to artificial insemination improves field fertility in farms: A worldwide survey     

Olga Blanco Prieto  Jaime Cataln  Marcel Lleonart  Sergi Bonet  Marc Yeste  Joan E. Rodríguez‐Gil 《Reproduction in domestic animals》2019,54(8):1145-1148

A survey of in vivo fertility data from 31 pig farms distributed worldwide was conducted to determine whether stimulating boar semen with LED‐based red light increases its reproductive performance following artificial insemination (AI). Red‐light stimulation with MaXipig^® was found to increase farrowing rates (mean ± SEM, control: 87.2% ± 0.4% vs. light stimulation 90.3% ± 0.5%) and the number of both total and live newborn piglets. Red‐light stimulation increased farrowing rates in 27 farms, with an increase ranging from 0.2% to 9.1%. Similar results were observed in litter sizes. Suboptimal management after AI was suggested in those farms with no response to red‐light stimulation. Our results indicate that a routine use of red‐light stimulation of boar semen can have a positive effect on the reproductive performance. However, the effectiveness of this system appears to highly rely upon proper management of pig farms.  相似文献   

Effect of early weaning on performance, carcass and meat quality of spring-born bull calves raised in dry mountain areas     

M. Blanco  G. Ripoll  P. Albertí  A. Sanz  R. Revilla  D. Villalba  I. Casasús 《Livestock Science》2008,115(2-3):226-234

Sixteen bull calves were born in the Spanish Central Pyrenees in spring. They were either early (EW, 90 days of age) or normal weaned (NW, 180 days of age). At day 90, EW calves were placed on an intensive diet while NW calves were turned out with their dams to high mountain pastures. After summer, at day 180, NW calves were weaned and placed with EW calves on a common finishing diet until slaughter at the fixed age of 1 year. From birth to early weaning date, no performance differences appeared. However, EW calves gained faster (1.549 kg/day) than their unweaned counterparts (0.783 kg/day) from early to normal weaning date (P < 0.001). During the finishing period, NW calves showed compensatory growth, with a 44% higher ADG than EW calves (P < 0.001), with a similar feed intake and a better feed conversion ratio. Early weaned calves had a longer fattening phase than NW calves (264 vs. 158 days, respectively; P < 0.001) and thus total feed intake and feed costs were greater. When slaughtered at 1 year of age, EW and NW calves attained similar weight (489 vs. 510 kg, respectively; P > 0.05), but dressing percentage was higher for EW calves (56.9%) than for NW calves (55.2%) (P < 0.01), which led EW calves to have heavier carcasses, without differences in fat score or conformation. The different growth paths, the result of weaning management, did not affect meat tenderness, chemical composition and fatty acid profile, but affected meat lightness, with higher values for compensating calves (NW) than calves in continuous growth (EW). In conclusion, advancing weaning age modified calf performance without affecting substantially carcass characteristics, except for an improvement in dressing percentage, or meat quality.  相似文献   

Development and characterization of EST‐derived SSRs from a ‘totipotent’ cDNA library of durum wheat     

A. Gadaleta  A. M. Mastrangelo  M. A. Russo  S. L. Giove  O. D’onofrio  T. Mango  F. Cellini  A. Blanco  L. Cattivelli  R. A. Cifarelli 《Plant Breeding》2010,129(6):715-717

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Embryonic development in corkwing wrasse,Symphodus melops     

Enrique Blanco Gonzalez  Ingrid Torstensnes  Mana Naito 《Journal of the World Aquaculture Society》2019,50(5):993-1001

Corkwing wrasse, Symphodus melops, is one of the main species used as cleaner fish to combat sea lice infestation in salmon aquaculture; however, there is little knowledge about its biology. Here, we describe the embryonic development of this species and examine the viability of the eggs under three temperature regimes. The experiments were conducted at three water temperature regimes, 12, 15, and 18°C, which resemble common sea water temperatures registered during the spawning season of corkwing wrasse at different latitudes along the Norwegian coast. Corkwing wrasse spawn small spherical eggs of 0.75–0.80 mm in diameter (mean 0.78, CV = 3.6%) with several oil droplets and go through eight developmental stages until hatching. The shortest hatching time was registered after 144 hr at 18°C and after 222 and 372 hr at 15 and 12°C, respectively. These observations provide important baseline biological information to advance the establishment of commercial rearing techniques and sustainable fishing management practices for this heavily exploited species.  相似文献   

Correction to: The development of the Norwegian wrasse fishery and the use of wrasses as cleaner fish in the salmon aquaculture industry     

Gonzalez  Enrique Blanco  de Boer  Femke 《Fisheries Science》2021,87(3):425-426

Fisheries Science - A correction to this paper has been published: https://doi.org/10.1007/s12562-021-01502-z  相似文献   

Comparison between two in situ methods for Mycobacterium avium subsp. paratuberculosis detection in tissue samples from infected cattle     

Delgado F  Etchechoury D  Gioffré A  Paolicchi F  Blanco Viera F  Mundo S  Romano MI 《Veterinary microbiology》2009,134(3-4):383-387

Paratuberculosis or Johne's disease is a chronic infectious disorder caused by Mycobacterium avium subsp. paratuberculosis (Map). The disease produces diarrhea and weight loss in cattle and other animal species, and it is characterized by granulomatous enteritis and lymphadenitis. Histopathology and in situ techniques can be used as a diagnostic test, but the performance of these methods was not previously compared. The aim of this paper was to evaluate the ability of immunohistochemistry and in situ hybridization to detect Map in formalin-fixed tissue samples from infected cattle. Samples (ileum or ileocecal lymph node) from four animals that had positive Map culturing, lesions and detectable acid fast bacilli, as well as from two control animals, were tested by immunohistochemistry and in situ hybridization. Immunostaining and positive hybridization were observed in areas with lesions from infected animal samples, inside the cytoplasm of macrophages, epithelioid and giant cells. Immunostaining was intense in three samples and weak in one, while hybridization was weak in all cases. In situ hybridization was positive in negative areas of tissues analyzed by immunohistochemistry, which could be related to spheroplast detection as it was previously described for this method. Control samples resulted negative by these two methods. Both techniques were able to detect Map in formalin fixed and paraffin embedded tissues, however immunohistochemistry produced higher intensity staining and was easier to perform. Therefore, we believe that immunohistochemistry and in situ hybridization to be useful for the post-mortem diagnosis and research of Paratuberculosis.  相似文献   

Comparison of Two Doses of the GnRH Antagonist, Acyline, for Pregnancy Termination in Bitches     

C Valiente  Y Corrada  PE de la Sota  PG Blanco  D Arias  C Gobello 《Reproduction in domestic animals》2009,44(S2):156-159

Gonadotropin-releasing hormone (GnRH) antagonists are particularly useful when a rapid inhibitory effect on the gonadal axis is required. The aim of this study was to test the efficacy and clinical safety of a low and high dose of the third generation GnRH antagonist, acyline, on pregnancy termination in female dogs. The effect of the antagonist on the progesterone (P₄) serum concentration was also described. Twenty-one mid-pregnant bitches were randomly assigned to a single subcutaneous (SC) dose of a placebo (PLACE; n = 7), a low (ACY-L; 110 μg/kg; n = 6) or high (ACY-H; 330 μg/kg; n = 8) dose of acyline. The animals were followed up for 15 days. All ACY treated but no placebo-treated animals terminated their pregnancy by abortion (p < 0.01). The ACY-L and ACY-H groups interrupted their pregnancy 7 ± 1.9 and 6.4 ± 1.3   days after treatment, respectively (p = 0.7). A significant interaction between treatment and day was found (p < 0.01) for P₄ serum concentrations when PLACE was compared with both ACY groups. No difference was found for this hormone between both ACY groups (p > 0.05) where P₄ diminished throughout the study. The decreasing rate varied among animals and was closely related to the time of abortion when P₄ reached basal concentrations. In PLACE animals, gestation progressed normally and P₄ did not change throughout the study (p > 0.05). None of the bitches presented side effects. It was concluded that acyline safely terminated mid-pregnancy by permanently decreasing P₄ serum concentrations.  相似文献   

Effect of bandaging on second intention healing of wounds of the distal limb in horses   总被引：1，自引：1，他引：0  

AJ Dart  NR Perkins  CM Dart  LB Jeffcott  P Canfield 《Australian veterinary journal》2009,87(6):215-218

Objective   To evaluate the effect of a non-occlusive dressing incorporated in a 3-layer bandage on second intention healing of wounds of the distal portion of the limb.
Study Design   Untreated wounds in 33 adult horses used in four studies using the same wound-healing model conducted over 5 years.
Methods   Standardised, full-thickness wounds were made in the skin overlying the dorsomedial aspect of the mid-metacarpus; 17 horses were bandaged with a non-occlusive dressing covered by gauze-coated cotton wool that was compressed with adhesive tape; 16 horses were left unbandaged. Wounds were photographed weekly for 9 weeks and the images were analysed electronically.
Results   There were significant effects associated with bandage (P < 0.0001), week (P < 0.001), and bandage by week interaction (P < 0.0001). There was no difference in wound area at the first time-point after wound creation (P = 0.38). After week 1, there was a difference between bandaged and unbandaged wounds in wound area at each measurement until the end of the study. Bandaged wounds showed greater and more prolonged retraction. Unbandaged wounds retracted for 2 weeks before beginning to contract, whereas bandaged wounds continued to retract for 3 weeks. In bandaged wounds excess granulation tissue required regular trimming, but not in unbandaged wounds. There was no difference between groups in the total days to healing or the overall rate of healing.
Conclusions   These results should be treated with caution until validated with contemporaneous, controlled studies. Covering a wound with a non-occlusive dressing in a 3-layer bandage led to greater wound retraction, modulated the rate of wound contraction and promoted excessive granulation tissue. If excessive granulation tissue is excised regularly, bandaging has no effect on total time to healing.  相似文献   

Effects of early weaning and breed on calf performance and carcass and meat quality in autumn-born bull calves     

M. Blanco  D. Villalba  G. Ripoll  H. Sauerwein  I. Casasús 《Livestock Science》2009,120(1-2):103-115

This study assessed the effects of age at weaning (early weaning at 90 d or traditional weaning at 150 d) and breed (Parda de Montaña or Pirenaica) on calf performance and carcass and meat quality in autumn-calving beef cattle. At calving, 14 Parda de Montaña and 14 Pirenaica cow–calf pairs were randomly assigned to one of two weaning treatments, and kept indoors during lactation. After weaning, calves were fed an intensive diet until slaughter at 450 kg. The interaction between age at weaning and breed was not significant for any of the parameters studied. From 90 d to 150 d, early weaned calves had greater ADG (P = 0.001) and IGF-I concentrations (P = 0.001) than traditionally weaned calves, but their leptin concentrations were similar (P = 0.15). During the finishing phase, performance, daily feed intake, and efficiency did not differ between treatments. Early weaning did not affect age at slaughter, carcass weight, fatness score, fat colour, and meat quality, but improved carcass conformation (P = 0.04). Early weaned calves had greater total DMI (P = 0.002) with greater concomitant feed costs (P = 0.001) and yielded a slightly greater income than traditionally weaned calves; therefore, economic margins did not differ. Parda de Montaña calves tended to have greater ADG from birth to 90 d and were heavier at 90 d (P = 0.01) than were Pirenaica calves. From 90 d to 150 d, performance and IGF-I and leptin concentrations did not differ between breeds; thus, Parda de Montaña calves remained heavier at 150 d. During the finishing phase, at times, weight gains of Parda de Montaña and Pirenaica calves differed, but the overall performance, feed intake, and efficiency of the two breeds were similar. Pirenaica calves had heavier carcasses (P = 0.04) with greater conformation scores (P = 0.04) than Parda de Montaña calves; thus, income per carcass was greater for the former than the latter (P = 0.007). As feed costs were similar for both breeds, the economic margin of Pirenaica calves was greater than that of Parda de Montaña calves (P = 0.01). In conclusion, in both breeds weaning strategies had similar effects on performance and carcass and meat quality; however, from an economic point of view, and considering only the costs associated with the calf, raising Pirenaica calves would be more profitable, at either age at weaning.  相似文献