Thanks to two interviews to Drs. Miguel Ángel Pérez Angón and Matías Moreno (Sep 2016), I can present to you how the idea of forming researchers in experimental particle physics in Mexico started. ...There is a connection with the spread of elementary particle physics in Europe: in 1983, CERN (European Centre for Nuclear Research) supports the inclusion of Spain as a member state, as it is the case three years later with Portugal. This boosts the development, in both countries, of high energy physics. In parallel, Nobel Prize winner (1988) and second Fermilab (Fermi National Accelerator Laboratory) director (1978 to 1989), Dr. Leon Max Lederman, decides to promote the growth of experimental high energy physics in Latin America.
Abstract
Background
The use of reproductive biotechnologies in equine practice has shown that some stallions are subfertile, so ways to improve fertility have been sought.
Objective
This study aimed ...to evaluate the effect of nutraceutical supplementation on improving semen quality in Quarter Horse stallions.
Methods
Semen from six Quarter Horse stallions was assessed for 4 months every 20 days using the computer‐assisted semen analysis system. They were evaluated for 60 days before supplementation; then, the same stallions were re‐evaluated for 60 days with nutraceutical supplementation (30 g/day).
Results
Volume showed no significant difference (
p
> 0.05) with nutraceuticals. Sperm concentration (10x
6
) was significantly higher with supplementation (339.4 ± 17.5 sperm/mL) than without supplementation (224.6 ± 19.9). Sperm abnormalities (%) were significantly (
p
< 0.05) lower with supplementation (14.3 ± 0.6) than without supplementation (19.1 ± 0.4). Sperm kinematic parameters, total motility (TM), progressive motility (PM), rectilinear velocity (VSL), the velocity of the trajectory (VAP) and curvilinear velocity (VCL), were significantly better with supplementation (
p
< 0.05).
Conclusions
Based on the results, it is concluded that nutraceutical supplementation improved semen parameters in Quarter Horse stallions.
To further the use of local parasitoids to control the spotted wing drosophila
suzukii
(Matsumura) in Mexico, three treatments were implemented by sextuplicate in commercial berry fields of Colima ...and Jalisco from June 2017 to May 2018: single release of
Trichopria drosophilae
Perkins (pupal parasitoid), combined release of
T. drosophilae
+
Leptopilina boulardi
Barbotin, Carton & Kelner-Pillault (larval parasitoid), and a no release control. Compared with the no release sites, parasitism by
T. drosophilae
increased 4 and 4.1-fold at the single and combined release sites, respectively, and parasitism of
L. boulardi
increased 2.8-fold at the sites where it was evaluated. Additionally, it was registered a 50 and 55% reduction of
D. suzukii
at the sites with single and combined releases, respectively; in other words, supplementing
T. drosophilae
with
L. boulardi
provided little benefit compared with the release of
T. drosophilae
alone. These results indicate that single release of local
T. drosophilae
is a more cost-effective option to reduce
D. suzukii
populations, and that such activity can contribute significantly to the phytosanitary management of this invasive pest.
The aim of this study was to evaluate the effect of the stage of seasonal anestrus and breed on ovarian response in non-estrous cycling goats using a progesterone (P4) injection plus human chorionic ...gonadotropin (hCG)-based protocol. In Experiment 1, non-estrous cycling local Mexican goats were treated with 20 mg of P4 plus 100 IU of hCG injections 24 h apart during April (early anestrus, n = 13) or June (late anestrus, n = 12). The estrous response, interval from hCG-to-estrus, and interval to ovulation were not affected by season (P > 0.05). In addition, the size of the follicle from which ovulation occurred and the size of the corpus luteum were not different between the two stages of seasonal anestrus (P > 0.05). In Experiment 2, the estrous response was compared between multiparous non-estrous cycling local Mexican (n = 18) and Alpine (n = 19) goats in which stage of the estrous cycle was synchronized using the same P4+hCG protocol as in Experiment 1. Neither the onset of estrus nor the time of ovulation differed between breeds, and the estrus-to-ovulation interval also was similar for both breeds (P > 0.05). The diameter of the dominant follicle at the time of ovulation was similar between local and Alpine goats (P > 0.05). In addition, the pregnancy rate was not different for both local and Alpine goats (P > 0.05). In conclusion, results of this study indicate that the stage of seasonal anestrus or breed do not modify estrous and ovarian response in non-estrous cyclic goats synchronized with a P4 injection plus hCG-based protocol.
Dorper rams (n = 24) were evaluated during the sexual resting season to determine their social rank (SR), either high (HSR) or low (LSR), under intensive management conditions in northern Mexico (25° ...N). Aggressive behaviors were quantified during male-to-male interactions, and appetitive and consummatory sexual behaviors during male-to-female interactions. Morphometric, live weight (LW), and body condition score (BCS) were recorded. During the early reproductive season, male-to-female behaviors were newly itemized simultaneously by seminal quality and quantity sampling. Finally, the dependent variables of the hemogram components were also quantified. Neither LW (61.25 ± 2.4 kg) nor morphometric variables differed between SR groups. However, BCS (2.25 vs. 2.66 u), sexual behaviors (i.e., approaches: 59.6 vs. 21.73 n, mating with ejaculation: 77.7 vs. 42.86 %, latency to ejaculation: 16.6 vs. 143.07 s), ejaculate volume (0.57 vs. 0.23 mL), and hemogram components favored the HSR rams (p < 0.05). Moreover, in their first male-to-female interaction, >50% of the LSR rams failed to display any sexual activity. HSR rams displayed a greater number of threatening behaviors, managing to displace LSR rams when exposed to estrus ewes during the male sexual resting season; more sexual behaviors; and an increased seminal volume in a non-live weight-dependent fashion.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, UILJ, UKNU, UL, UM, UPUK
Based on a circular economy approach, we evaluated the possible effect of targeted supplementation with leftover feed from dairy cows (i.e., intensive system) on the reproductive performance of ...crossbred/rangeland goats (i.e., extensive system) in arid Northern Mexico. During the deep-anestrous season (i.e., March-April, 25° North), multiparous goats (
= 38) with a similar body weight (BW) and body condition score (BCS) were randomly assigned to two groups: (1) supplemented group (SG;
= 19; BCS: 1.76 ± 0.07; BW: 43.7 ± 1.8 kg), receiving 400 g goat d
of dairy-cow-feed leftovers prior to grazing; and (2) non-supplemented group (NS;
= 19; BCS: 1.76 ± 0.06; BW: 44.3 ± 2.5 kg). Both groups were directed to the rangeland for a period of ≈8 h. While the experimental period lasted 36 d, the experimental breeding considered 11 d (d0-d10). The anovulatory status of goats was ultrasonographically confirmed on days -20, -10, and -1 prior to male-female interaction. Previously, bucks were separated for 3 weeks from the experimental females and received exogenous testosterone every third day (i.e., 50 mg i.m.) prior to mating. With respect to the response variables, namely BW, BCS, blood glucose levels (BGLs), estrus induction (GIE, %), latency to estrus (LTE, h), estrus duration (ED, h), and luteal tissue volume (LTV, mm), no differences (
> 0.05) occurred between experimental groups. However, the response variables, namely goats ovulating (GO, %; 78.9 vs. 47.3), total number of corpuses luteum (TNCL,
; 27 vs. 13), ovulation rate (OR,
; 1.42 vs. 0.73), multiple ovulation (MO, %; 73.3 vs. 55.5), and pregnancy rate on d 36 (PRd36, %, 68.4 vs. 36.8), favored (
< 0.05) the SG over the NS goats. Our results demonstrate that connecting the circularity of two divergent ruminant production systems (i.e., cow-intensive and goat-extensive) by using dairy cows' feed leftovers as a targeted supplementation strategy in anestrous goats under a marginal-rangeland production system enhanced out-of-season reproductive outcomes (i.e., ovulation rate and pregnancy rate), thus benefiting marginal goat producers and their families.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, UILJ, UKNU, UL, UM, UPUK
Thoracoschisis is a rare congenital malformation characterized by the herniation of abdominal contents through a chest wall defect. It can occur as an isolated entity or associated with the Limb Body ...Wall Complex (LBWC) syndrome. The isolated form is the less frequent, with only 6 cases reported in the literature. We report the case of a female neonate with isolated thoracoschisis and review the few cases previously reported.
To assess changes in diabetic lower-extremity amputations (LEA) rates in a defined population over a 15-year period, following a multidisciplinary approach including a critical pathway in an ...inpatient setting with standardized preoperative and postoperative care, as well as in an outpatient setting through the establishment of a diabetic foot clinic.
This is a study of the incidence and types of LEAs performed in patients with diabetic foot disease complicated admitted to Morales Meseguer Hospital (Murcia, Spain), a large district general hospital, before (1998-2000) and after (2001-2012) of the introduction of better organized diabetes foot care. Hospital and clinic characteristics to the success of the programme are described. All cases of LEA in diabetic patients (1998-2012) within the area were identified by ICD-9-Clinical modification (CM) diagnostic codes. A chi square test was used to compare the frequency and level of amputations.
Over all inpatients with diabetes admitted with foot infections and gangrene, there was a significant decrease in the proportion of total major amputations (47%) and elective major amputations (66%) (p<0.001). The incidence of total major amputations rates per 100.000 of the general population fell with statistical significance (p=0.009). The biggest improvement in LEA incidence was seen in the reduction of major elective amputation with fell 60%, from 7.6 to 3.1 per 100,000 (p<0.001).
Significant reductions in total and major amputations rates occurred over the 15-year period following improvements in foot care services included multidisciplinary teamwork (critical pathway and diabetic foot clinic).
The parasitoid Trichopria drosophilae is commercially reproduced in the host Drosophilae melanogaster, but using D. suzukii pupae may be a better alternative for mass rearing. We conducted ...concatenated laboratory and field studies, which showed that T. drosophilae reared on D. suzukii had superior biological traits, including higher pest reduction under field conditions, at least under the particular conditions of these trials.
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•The parasitoid T. drosophilae is reproduced commercially in the host D. melanogaster.•The D. suzukii pupae could be a better alternative to mass rearing this parasitoid.•Previous lab studies comparing both hosts have not been conclusive favoring one.•Here, T. drosophilae reared on D. suzukii had better laboratory performance.•Likewise, it provided higher pest reduction than those reared from D. melanogaster.
Two colonies of the parasitoid Trichopria drosophilae (Perkins) (Hymenoptera: Diapriidae) are reproduced using a mass rearing approach in Mexico. The first colony uses the worldwide commercial host Drosophila melanogaster Meigen (Diptera: Drosophilidae) reared on an artificial diet (=T. drosophilae-Dm), while the second colony uses D. suzukii Matsumura reared on fresh banana (=T. drosophilae-Ds). Since theoretically the type of colony host affects parasitoid field performance, we conducted concatenated laboratory and field studies of both parasitoid lines. In the laboratory trials, T. drosophilae-Ds exhibited greater longevity, larger adult size, and higher fecundity than T. drosophilae-Dm. Both lines of parasitoids oviposited indistinctly in three drosophilid species commonly found in the berry zones of Colima: D. melanogaster, D. suzukii, and Zaprionus indianus Gupta. In the field trials, T. drosophilae-Ds had a larger population size and provided 2.4-fold higher pest reduction compared to T. drosophilae-Dm. Under the particular conditions of these field trials (berry fields separate from each other ≤ 3 km, and intensive agronomic management), these results demonstrate that T. drosophilae-Ds can significantly contribute more to the integrated management of D. suzukii than when reared on the commercial host D. melanogaster.
In this study the evaluation of the care process of the diabetic foot will be carried out after the implementation of an intra-hospital clinical pathway and a multidisciplinary consultation.
Evaluate ...the influence on factors related to the care, amputations, and rehabilitation of the amputee patient.
Retrospective study, in which the comparison of three periods has been made. First (3years): Before the implantation of the pathway. Second (5years): After the implementation of the pathway. Third (10years): After the implementation of the consultation.
A specialized consultation in diabetic foot care contributes to a reduction in femoral and minor amputations. The assessment and treatment by rehabilitation of patients undergoing major amputation has been optimized.
The implantation of the pathway and consultation contributes to the preservation of the lower limb. However, the incidence remains high, suggesting that diabetic foot care remains suboptimal.
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