Fruit characterization of Cocos nucifera L. (ARECACEAE) cultivars from the Pacific coast of Costa Rica and the Philippines     

Alfonso Vargas  Fabio A. Blanco 《Genetic Resources and Crop Evolution》2000,47(5):483-487

Tall coconut cultivars from the Pacific coast of Costa Rica and the Philippines (San Ramón, Tagnanán, and Laguna), were evaluated for fruit characteristics. Most of the introduced cultivars showed extremely large heterogeneity. A cluster analysis, based on the Ward method, classified the palms into four groups with high internal homogeneity. Some of the evaluated coconut palms from the Costa Rican Pacific area had nut characteristics similar to the San Ramon and Tagnanan palm groups but not to the Laguna group. At the association level used (semipartial R ² = 0.10), another group which included the remaining palms sampled from the Costa Rican Pacific coast was constituted.  相似文献   

Intra-generic variations of sensitivity to polychlorinated biphenyls (PCBs) and DDT in soil Baccilli     

H.K. Mahanty  Gloria Evans 《Soil biology & biochemistry》1980,12(5):521-522

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Risk assessment and surveillance for bovine spongiform encephalopathy (BSE) in Argentina   总被引：7，自引：0，他引：7  

A. A. Schudel  B. J. Carrillo  E. L. Weber  J. Blanco Viera  E. J. Gimeno  C. van Gelderen  E. Ulloa  A. Nader  B. G. Can  R. H. Kimberlin 《Preventive veterinary medicine》1996,25(3-4):271-284

An assessment was made of the risks of bovine spongiform encephalopathy (BSE) occurring in Argentina. Most of the factors associated with the origin and development of the BSE epidemic in the UK are essentially absent. For example, Argentina's large sheep and cattle industries are based on low-cost production systems using grass. Concentrated feeds are not used for sheep, rarely for beef cattle and to a comparatively modest extent for dairy cows. Particularly important are the facts that scrapie (and BSE) has never been reported in Argentina—very small amounts of waste tissues from sheep are rendered to produce meat and bone meal (MBM)—and MBM is not used in concentrated feeds for cattle. We conclude that Argentina has an exceptionally low risk of BSE due to scrapie. There is a very small risk of BSE having been introduced via live animals imported from countries with BSE, but this could only give rise to isolated cases because MBM is not fed to cattle.

A surveillance programme has been carried out based largely on a histological examination of brains from three categories of old dairy cows: animals reported on the suspicion of having neurological disease; animals in poor condition at slaughter; healthy animals randomly selected in the abattoir. No evidence of transmissible spongiform encephalopathy was seen in several sections from each of a total of 1019 brains. We conclude that, for most practical purposes, Argentina may be considered to be free from BSE.  相似文献   

A spline polynomial model to describe serum IGF-I concentration from birth to slaughter in calves: effects of weaning age,pre-weaning concentrate feeding and breed     

M. Blanco  I. Casasús  D. Villalba 《Domestic animal endocrinology》2010

The statistical analysis of hormones sampled throughout the production cycle is complicated because factors such as age and weight at the measuring date interfere. Spline curves constructed from pieces of low-degree, random-effects polynomials could be used for a more accurate analysis of data. Concentration of insulin-like growth factor-1 (IGF-1), weight gain, and concentrate intake of Parda de Montaña (PM) (n = 27) and Pirenaica calves (n = 14) were modeled with a spline model according to age at weaning, pre-weaning concentrate feeding, and breed. At birth, calves were randomly assigned to early weaning (EW) at 90 d or traditional weaning (TW) at 150 d. During lactation, half of PM calves received concentrates (S), whereas the remainder received no concentrates (NS). After weaning, calves received concentrates on an ad libitum basis until they reached a weight of 450 kg. The spline model had better likelihood than a polynomial of 6 degrees or a split-plot model. Serum IGF-1 concentration was greatly affected by age at weaning and pre-weaning concentrate feeding, but not by breed. In NS calves, IGF-1 concentration was greater in EW than in TW calves from 120 to 300 d, irrespective of breed. During lactation, S calves had greater IGF-1 concentration than NS calves. After weaning, EWNS calves reached the IGF-1 concentration of EWS calves after 4 mo on concentrates, whereas TWNS calves attained IGF-1 concentration of TWS calves after only 2 mo, because of their increased concentrate intake relative to TWS calves. Concentration of IGF-1 was positively correlated with the immediate weight gains and intake, but it was not a good predictor of performance in the long term.  相似文献   

Effect of probiotic Enterococcus faecium SF68 on liver function in healthy dogs     

Rosario Lucena  Manuel Novales  Beatriz Blanco  Eduardo Hernndez  Pedro Jos Ginel 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2019,33(6):2628-2634

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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