Cold housing and computer-controlled milk feeding for dairy calves: behaviour and performance

1993 ◽  
Vol 57 (2) ◽  
pp. 183-191 ◽  
Author(s):  
K. Bøe ◽  
Ø. Havrevoll
Keyword(s):  
Activity Rhythm ◽  
Dairy Calves ◽  
Body Contact ◽  
Feeding Group ◽  
Group 3 ◽  
Computer Controlled ◽  
Group 2 ◽  
And Performance ◽  
Milk Feeding ◽  
Group 1

AbstractIn each of two experiments, 36 3 to 5-day-old dairy calves (male and female), were allotted to one of three groups: warm housing, milk feeding in teat-buckets twice a day (group 1); warm housing and computer-controlled milk feeding (group 2); and cold housing and computer-controlled milk feeding (group 3). The experiments were conducted from September until February. The daily gain in the first 4 weeks was lower for the calves in group 3 in both experiments and for calves in group 2 in experiment 2 because of lower food intake in this period. This was compensated for by an increased gain later. In spite of the different method of milk feeding, the activity rhythm was nearly equal among groups, but at week 6 and 10 the calves in group 1 spent more time with the head over the feeding table than the calves in the two other groups. The number of unrewarded visits per calf to the milk feeding station decreased from over 30 at week 4 to around 20 shortly before weaning. The frequency of sucking/licking pen-mates was almost negligible in all groups. In order to reduce the heat loss, the frequency of calves lying with body contact clearly increased by decreasing ambient temperature in cold housing.

Learner proficiency and EFL learning through task rehearsal and performance

2019 ◽  
Vol 24 (5) ◽  
pp. 588-615
Author(s):  
Bao Trang Thi Nguyen ◽  
Jonathan Newton
Keyword(s):  
Foreign Language ◽  
Teaching And Learning ◽  
Language Problems ◽  
Total Data ◽  
Group 3 ◽  
Group 2 ◽  
And Performance ◽  
The Impact ◽  
Problem Solving Task ◽  
Group 1

This study examined the impact of learner proficiency on the occurrence and resolution of language-related episodes (LREs) in rehearsal of interactive speaking tasks and on the subsequent use of language items from LREs during performance of the same tasks in front of the class. Forty-eight learners from six intact English as a foreign language (EFL) classes at a Vietnamese high school were divided into three proficiency groups, each consisting of eight dyads. Group 1 was higher proficiency (HH) dyads; Group 2 consisted of mixed proficiency dyads (HL) and Group 3 was lower proficiency (LL) dyads. All the pairs rehearsed and then consecutively performed a problem-solving task and a debate task in two separate classroom lessons. The total data included 48 rehearsals and 48 corresponding performances collected during normal classroom hours. The results show that, overall, LL dyads encountered more language problems (more LREs) in rehearsal than HH dyads and they were less likely to resolve them successfully. However, they were able to use a majority of the correct resolutions in the performance as well as their higher proficiency counterparts. The lower proficiency learners were also found to employ memorizing and local rehearsing strategies to retain ideas and language items as they rehearsed for the upcoming performance. These findings have pedagogical implications for teaching and learning through tasks in EFL contexts and beyond.

scholarly journals Learner proficiency and EFL learning through task rehearsal and performance

2020 ◽  
Author(s):  
BTT Nguyen ◽  
Jonathan Newton
Keyword(s):  
Foreign Language ◽  
Teaching And Learning ◽  
Language Problems ◽  
Total Data ◽  
Group 3 ◽  
Group 2 ◽  
And Performance ◽  
The Impact ◽  
Problem Solving Task ◽  
Group 1

© The Author(s) 2019. This study examined the impact of learner proficiency on the occurrence and resolution of language-related episodes (LREs) in rehearsal of interactive speaking tasks and on the subsequent use of language items from LREs during performance of the same tasks in front of the class. Forty-eight learners from six intact English as a foreign language (EFL) classes at a Vietnamese high school were divided into three proficiency groups, each consisting of eight dyads. Group 1 was higher proficiency (HH) dyads; Group 2 consisted of mixed proficiency dyads (HL) and Group 3 was lower proficiency (LL) dyads. All the pairs rehearsed and then consecutively performed a problem-solving task and a debate task in two separate classroom lessons. The total data included 48 rehearsals and 48 corresponding performances collected during normal classroom hours. The results show that, overall, LL dyads encountered more language problems (more LREs) in rehearsal than HH dyads and they were less likely to resolve them successfully. However, they were able to use a majority of the correct resolutions in the performance as well as their higher proficiency counterparts. The lower proficiency learners were also found to employ memorizing and local rehearsing strategies to retain ideas and language items as they rehearsed for the upcoming performance. These findings have pedagogical implications for teaching and learning through tasks in EFL contexts and beyond.

Plasma concentrations of insulin-like growth factor-I and insulin in the infant calf: ontogeny and influence of altered nutrition

1988 ◽  
Vol 119 (1) ◽  
pp. 43-50 ◽  
Author(s):  
B. H. Breier ◽  
P. D. Gluckman ◽  
J. J. Bass
Keyword(s):  
Birth Weight ◽  
Growth Factor ◽  
Plasma Insulin ◽  
Plasma Concentrations ◽  
Factor I ◽  
Igf I ◽  
Group 3 ◽  
Group 2 ◽  
Milk Feeding ◽  
Group 1

ABSTRACT The developmental pattern of plasma insulin-like growth factor-I (IGF-I) and insulin in calves subject to different patterns of weaning was investigated from birth until the age of 6 months. Fifteen male Friesian calves were fed on whole milk (10% of body weight per day) for the first 8 weeks after birth, then allocated into three balanced groups. Group 1 was weaned at 8 weeks; group 2 was weaned at 8 weeks, returned to milk-feeding at 13 weeks to be weaned again at the age of 16 weeks; group 3 was weaned at 12 weeks. After weaning the calves were fed on concentrates and lucerne hay. At birth, circulating concentrations of IGF-I correlated with birth weight (r = 0·78, P< 0·001). There was a significant (P<0·001) fall in plasma IGF-I from birth (40·3 ± 2·5 μg/l) until 5 weeks (23·8± 1·3 μg/l), and then a gradual (P<0·01) rise until week 8 (35·0 ± 2·2 μg/l). Weaning (groups 1 and 2 after week 8) caused a significant (P<0·01) decrease in plasma IGF-I (20·5 ± 1·9 μg/l); thereafter plasma levels of IGF-I rose gradually (P<0·01) in animals fed on concentrates. The milk-fed calves (group 3) showed a progressive increase in plasma IGF-I with age until they were weaned at 12 weeks (51·0 ± 3·4 μg/l); IGF-I levels then decreased to be similar to group 1 (32·5 ± 2·1 μg/l). When group 2 was returned to milk-feeding, plasma IGF-I concentrations increased to 58·2 ±3·8 μg/l within 4 days and then continued to rise gradually until decreasing upon weaning. The age-related increase in the plasma concentration of IGF-I after 6 weeks was parallel in milk- and concentrate-fed calves. Binding of 125I-labelled bovine GH to hepatic membranes of neonatal calves was low at birth (specific binding; 1·56 ±0·29% n=3). Somatotrophic binding was apparent at 6 weeks (6·43 ±0·42%, n = 3) and increased (9·2± 1·1%, n=3) at the age of 12 weeks. Thus the early postnatal changes in plasma IGF-I may reflect the transition from GH-independent to GH-dependent IGF-I secretion. Plasma concentrations of insulin at birth correlated with IGF-I (r = 0·54, P<0·05). However, regression analysis suggested no effect of insulin on birth weight independent of IGF-I. Plasma insulin levels rose gradually until weaning and thereafter were significantly (P<0·01) higher in the milk- than concentratefed calves. Major changes in plasma concentrations of IGF-I related to monogastric (milk feeding) or ruminant (concentrate feeding) nutrition of the young calf are demonstrated. They may be mediated through changing plasma insulin concentrations. An age-dependent prepubertal rise in plasma IGF-I apparently independent of nutritional factors commenced with the appearance of functional somatotrophic receptors in the liver. J. Endocr. (1988) 119, 43–50

Effect of Knowledge of Directional Mistunings on the Tuning Accuracy of Beginning and Intermediate Wind Players

1995 ◽  
Vol 43 (3) ◽  
pp. 232-241 ◽  
Author(s):  
Cornelia Yarbrough ◽  
Brant Karrick ◽  
Steven J. Morrison
Keyword(s):  
Performance Tuning ◽  
First Year ◽  
Performance Task ◽  
Treatment Groups ◽  
Instrument Type ◽  
Group 3 ◽  
Group 2 ◽  
Wind Players ◽  
And Performance ◽  
Group 1

The purpose of this research was to study the effect of knowledge of directional mis-tunings on the tuning accuracy of beginning and intermediate wind players. Subjects (N = 197) were instrumental wind players who tuned to either an For a B-flat with both their own instrument—a performance task—and the tuning knob of a variable-pitch keyboard—a perception task. The subjects were randomly assigned to one of three treatment groups: Group 1 knew that their instruments and the tuning knob were mis-tuned in the sharp direction; Group 2 knew that their instruments and the tuning knob were mistuned in the flat direction; and Group 3 had no information regarding direction of mistunings. Data demonstrated that only years of instruction significantly affected subjects' tuning accuracy. There were no significant differences due to treatment, instrument type, or tuning pitch. There were only 6 in-tune performance responses and 12 in-tune perception responses. Approaching the target pitch from above resulted in more sharp responses; approaching it from below resulted in more flat responses; and having no knowledge of direction of mistuning resulted in an equal number of sharp and flat responses. There were a greater number of flat responses in the first year of instruction and a greater number of sharp responses in the fourth year. Finally, there was consistent improvement from the first to the fourth year in both perception and performance tuning tasks.

scholarly journals Comparing the Effect of Different Management and Rearing Systems on Pigeon Squab Welfare and Performance after the Loss of One or Both Parents

Animals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 165
Author(s):  
Azhar F. Abdel Fattah ◽  
El-Shimaa M. Roushdy ◽  
Hammed A. Tukur ◽  
Islam M. Saadeldin ◽  
Asmaa T. Y. Kishawy
Keyword(s):  
Survival Rate ◽  
Growth Performance ◽  
Foster Parent ◽  
Female Parent ◽  
Rearing Method ◽  
Group 3 ◽  
Group 2 ◽  
And Performance ◽  
Group 1

Pigeon squabs completely depend on their parents for care and nourishment. The loss of one or both parents affects squabs’ successful fledging. This study was carried out on young squabs to compare the effect of pigeon parent sex and different fostering methods on squab welfare (behavior and growth performance). Two experiments were carried out. In the first experiment, the squabs were divided into three groups. Group 1 (control) consisted of 10 parent pairs with 20 brooding squabs; group 2 consisted of 10 male parents with 20 brooding squabs; and group 3 consisted of 10 female parents with 20 brooding squabs. In the second experiment, the squabs were also divided into three groups. Group 1 (control) consisted of 10 parent pairs with 20 brooding squabs; group 2 consisted of 20 brooding squabs fostered by 10 foster parent pigeons (either male or female); and group 3 consisted of 20 brooding squabs fostered by the hand-rearing method. A significant improvement in growth performance, behavioral welfare (head waggle, squab note and squab wing shake); increased repetition of these behaviors indicates stress and discomfort), and survival rate was observed to be higher in the group brooded by both parents compared to the group brooded by either a male or a female parent. In addition, the group fostered by hand-rearing showed a significant improvement in growth performance, behavioral welfare, and survival rate compared to the group brooded by foster pigeon parents.

scholarly journals Learner proficiency and EFL learning through task rehearsal and performance

2020 ◽  
Author(s):  
BTT Nguyen ◽  
Jonathan Newton
Keyword(s):  
Foreign Language ◽  
Teaching And Learning ◽  
Language Problems ◽  
Total Data ◽  
Group 3 ◽  
Group 2 ◽  
And Performance ◽  
The Impact ◽  
Problem Solving Task ◽  
Group 1

© The Author(s) 2019. This study examined the impact of learner proficiency on the occurrence and resolution of language-related episodes (LREs) in rehearsal of interactive speaking tasks and on the subsequent use of language items from LREs during performance of the same tasks in front of the class. Forty-eight learners from six intact English as a foreign language (EFL) classes at a Vietnamese high school were divided into three proficiency groups, each consisting of eight dyads. Group 1 was higher proficiency (HH) dyads; Group 2 consisted of mixed proficiency dyads (HL) and Group 3 was lower proficiency (LL) dyads. All the pairs rehearsed and then consecutively performed a problem-solving task and a debate task in two separate classroom lessons. The total data included 48 rehearsals and 48 corresponding performances collected during normal classroom hours. The results show that, overall, LL dyads encountered more language problems (more LREs) in rehearsal than HH dyads and they were less likely to resolve them successfully. However, they were able to use a majority of the correct resolutions in the performance as well as their higher proficiency counterparts. The lower proficiency learners were also found to employ memorizing and local rehearsing strategies to retain ideas and language items as they rehearsed for the upcoming performance. These findings have pedagogical implications for teaching and learning through tasks in EFL contexts and beyond.

scholarly journals Comparison of Three Different Chemotherapy Regimens Containing Epirubicin in Hormone-Refractory Prostate Cancer Patients

2008 ◽  
Vol 8 ◽  
pp. 586-597 ◽  
Author(s):  
Hamit Ersoy ◽  
Orhan Yigitbası ◽  
Levent Sagnak ◽  
Hikmet Topaloglu ◽  
Ahmet Kiper
Keyword(s):  
Prostate Cancer ◽  
Treatment Protocol ◽  
Response Rates ◽  
Complete Response ◽  
Survival Times ◽  
Group 3 ◽  
Hormone Refractory ◽  
Group 2 ◽  
And Performance ◽  
Group 1

We compared three different chemotherapy regimens containing epirubicin in hormonerefractory prostate cancer (HRPC) patients. Sixty-nine patients with HRPC were randomized into three groups. The first group (22 patients) received 30 mg/m2/week i.v. epirubicin for 8 weeks. The second group (24 patients) received 30 mg/m2/week i.v. epirubicin for 8 weeks followed by monthly maintenance therapy for 4–6 months. The third group (23 patients) received oral estramustine phosphate (EMP) at a dose of 840 mg/day together with weekly and monthly maintenance epirubicin. The response rates, mean survival times, and toxicity were determined. Within the first 3 months, pain and performance scores were improved by at least one degree in all the groups. One patient in group two and three patients in group three had complete response. Partial response rates were 23% in group 1, 25% in group 2, and 17% in group 3. Stable disease rates were 41% in group 1, 33% in group 2, and 26% in group 3. The progression rates within the first 3 months were 36% in group 1, 38% in group 2, and 44% in group 3. None of the patients developed complications that were significant enough to terminate the treatment. Two patients in group 3 died of cardiotoxicity. The mean survival times were 10.1, 15.8, and 16.1 months in groups 1, 2, and 3, respectively. It was determined that weekly and maintenance epirubicin treatment protocol, and estramustine treatment protocol in addition to this treatment, was only meaningfully more effective against weekly epirubicin treatment in the statistical sense (0.01 < p < 0.05). However, due to the complications of EMP, which influence the quality of life, we believe that this was usable only when measures were adopted against these effects.

In-vivo evaluation of the effect of cyanoacrylate on prosthetic vascular graft infection – does cyanoacrylate increase the severity of infection?

VASA ◽  
2020 ◽  
Vol 49 (4) ◽  
pp. 281-284
Author(s):  
Atıf Yolgosteren ◽  
Gencehan Kumtepe ◽  
Melda Payaslioglu ◽  
Cuneyt Ozakin
Keyword(s):  
Vascular Graft ◽  
Graft Infection ◽  
Vascular Graft Infection ◽  
Group 4 ◽  
Significant Difference ◽  
Group 3 ◽  
Group 2 ◽  
Prosthetic Vascular Graft Infection ◽  
Group 1

Summary. Background: Prosthetic vascular graft infection (PVGI) is a complication with high mortality. Cyanoacrylate (CA) is an adhesive which has been used in a number of surgical procedures. In this in-vivo study, we aimed to evaluate the relationship between PVGI and CA. Materials and methods: Thirty-two rats were equally divided into four groups. Pouch was formed on back of rats until deep fascia. In group 1, vascular graft with polyethyleneterephthalate (PET) was placed into pouch. In group 2, MRSA strain with a density of 1 ml 0.5 MacFarland was injected into pouch. In group 3, 1 cm 2 vascular graft with PET piece was placed into pouch and MRSA strain with a density of 1 ml 0.5 MacFarland was injected. In group 4, 1 cm 2 vascular graft with PET piece impregnated with N-butyl cyanoacrylate-based adhesive was placed and MRSA strain with a density of 1 ml 0.5 MacFarland was injected. All rats were scarified in 96th hour, culture samples were taken where intervention was performed and were evaluated microbiologically. Bacteria reproducing in each group were numerically evaluated based on colony-forming unit (CFU/ml) and compared by taking their average. Results: MRSA reproduction of 0 CFU/ml in group 1, of 1410 CFU/ml in group 2, of 180 200 CFU/ml in group 3 and of 625 300 CFU/ml in group 4 was present. A statistically significant difference was present between group 1 and group 4 (p < 0.01), between group 2 and group 4 (p < 0.01), between group 3 and group 4 (p < 0.05). In terms of reproduction, no statistically significant difference was found in group 1, group 2, group 3 in themselves. Conclusions: We observed that the rate of infection increased in the cyanoacyrylate group where cyanoacrylate was used. We think that surgeon should be more careful in using CA in vascular surgery.

Abnormal Haemostasis and Blood Viscosity in Malignant Hypertension

1984 ◽  
Vol 52 (03) ◽  
pp. 253-255 ◽  
Author(s):  
C Isles ◽  
G D O Lowe ◽  
B M Rankin ◽  
C D Forbes ◽  
N Lucie ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Blood Viscosity ◽  
Renal Damage ◽  
Antithrombin Iii ◽  
Plasma Viscosity ◽  
Malignant Hypertension ◽  
Fibrin Deposition ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

SummaryWe have previously shown abnormalities of haemostasis suggestive of intravascular coagulation in patients with malignant hypertension, a condition associated with retinopathy and renal fibrin deposition. To determine whether such abnormalities are specific to malignant hypertension, we have measured several haemostatic and haemorheological variables in 18 patients with malignant hypertension (Group 1), 18 matched healthy controls (Group 2), and 18 patients with non-malignant hypertension (Group 3) matched for renal pathology, blood pressure and serum creatinine with Group 1. Both Groups 1 and 3 had increased mean levels of fibrinogen, factor VIIIc, beta-thrombo- globulin, plasma viscosity and blood viscosity (corrected for haematocrit); and decreased mean levels of haematocrit, antithrombin III and platelet count. Mean levels of fast antiplasmin and alpha2-macroglobulin were elevated in Group 1 but not in Group 3. We conclude that most blood abnormalities are not specific to malignant hypertension; are also present in patients with non-malignant hypertension who have similar levels of blood pressure and renal damage; and might result from renal damage as well as promoting further renal damage by enhancing fibrin deposition. However increased levels of fibrinolytic inhibitors in malignant hypertension merit further investigation in relation to removal of renal fibrin.

Features of postoperative period in patients with chronic venous insufficiency: phlebectomy versus thermal ablation

2020 ◽  
pp. 64-75
Author(s):  
E. Burleva ◽  
O. Smirnov ◽  
S. Tyurin
Keyword(s):  
Postoperative Period ◽  
Chronic Venous Insufficiency ◽  
Thermal Ablation ◽  
Venous Insufficiency ◽  
Clinical Symptoms ◽  
Varicose Veins ◽  
Statistical Processing ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

The purpose of the study was to conduct a comparative assessment of the course of the postoperative period after phlebectomy and thermal ablation in patients with varicose veins of the lower extremities in the system of the great saphenous vein (GSV) with class C2 of chronic venous insufficiency (CVI) — CEAP class C2. Materials and methods: 455 patients (455 limbs) with CEAP class C2. Group 1 (n = 154) received stripping + minimally invasive phlebectomy; Group 2 — endovenous laser ablation (EVLA) of GSV trunk + sclerotherapy of varicose veins; 3 group (n = 150) — radiofrequency ablation (RFA) of the GSV + sclerotherapy. All patients were united by a single tactical solution — the elimination of pathological vertical reflux in GSV. In each group, patients were with similar hemodynamic profile were selected (Group 1 = 63; Group 2 = 61; Group 3 = 61). The course of the postoperative period (from 2 days to 2 months) was compared for pain (visual analog scale — VAS), clinical symptoms of chronic venous insufficiency, degree of satisfaction (Darvall questionnaire), and duration of disability. Statistical processing was carried out using Excel programs for Windows XP, MedCalc® (version 11.4.2.0., Mariakerke, Belgium). Results: Postoperative pain is more pronounced (during day 1 for Group 1–4.0, Group 2–3.0, Group 3–2.0) and more prolonged (up to 4 days) after open surgeries (p < 0.05). The dynamics of the clinical symptoms of CVI (including varicose syndrome and use of compression therapy) could not be fully evaluated in connection with the ongoing sclerotherapy procedures for patients of Groups 2 and 3. Satisfaction of patients with aesthetic aspects was higher than expected in all groups. Reliable statistical differences proved decrease in days of disability (Group 1–14; Group 2–4; Group 3–3) and earlier return to physical activities and work in patients after thermal ablation in comparison with phlebectomy. Conclusion: The study shows that all three methods for eliminating vertical reflux in the GSV can be proposed for a large category of patients with CEAP of class C3 and C2. Medical and social rehabilitation of patients using endovascular thermal ablation technologies proceeds faster, which is beneficial both for the patients and for society.

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