THE EFFECTS OF THIOURACIL AND OF THYROXINE ON CERTAIN BIOCHEMICAL RESPONSES OF THE IMMATURE PULLET TO COMBINED TREATMENT WITH ESTROGEN AND ANDROGEN

1955 ◽  
Vol 33 (4) ◽  
pp. 667-676
Author(s):  
R. H. Common ◽  
W. A. Maw ◽  
D. S. Layne
Keyword(s):  
Crude Protein ◽  
Great Increase ◽  
Combined Treatment ◽  
Live Weight ◽  
Estradiol Benzoate ◽  
The Other ◽  
Control Group ◽  
Control Groups ◽  
Kidney Weight ◽  
Androgen Treatment

Sexually immature pullets were given a combined estrogen–androgen treatment, consisting of estradiol benzoate (ODB) plus testosterone propionate (TST). The influences of thiouracil and of thyroxine on various responses to this treatment were studied in two experiments. Thiouracil depressed slightly the hypertrophy of the oviduct evoked by ODB + TST; thyroxine enhanced the hypertrophy in one experiment, but depressed it in the other. Thiouracil enhanced, and thyroxine depressed the hypertrophy of the liver evoked by ODB + TST. Thiouracil also enhanced the increase of liver crude protein per kgm. live weight evoked by ODB + TST. The slight increase of liver deoxyribonucleic acid phosphorus (DNAP) per kgm. live weight evoked by ODB + TST was also enhanced by thiouracil and depressed by thyroxine. The great increase of liver pentose nucleic acid phosphorus (RNAP) per kgm. live weight evoked by ODB + TST was enhanced by thiouracil, but was depressed by thyroxine. The great increase in the ratio RNAP: DNAP in liver evoked by ODB + TST was not modified by thiouracil, but it was depressed by thyroxine. In one experiment, ODB + TST increased kidney weight per kgm. live weight; and this effect was enhanced by thiouracil and by thyroxine. In the other experiment, ODB + TST did not affect kidney weight, but the kidney weight per kgm. live weight was greater in the groups receiving either thiouracil or thyroxine than in the control group. ODB + TST did not affect kidney DNAP or RNAP per kgm. live weight, and a slight increase in kidney RNAP: DNAP observed in both experiments fell short of significance at P = 0.05. Both kidney RNAP and DNAP were significantly greater in the groups receiving thiouracil or thyroxine than in the control groups. ODB +f TST evoked a slight increase in the ratio RNAP: DNAP in kidney, and this effect was greatly enhanced by either thiouracil or thyroxine. In confirmation of previous work, the hypercalcemia evoked by ODB + TST was depressed by either thiouracil or by thyroxine.

THE EFFECTS OF THIOURACIL AND OF THYROXINE ON CERTAIN BIOCHEMICAL RESPONSES OF THE IMMATURE PULLET TO COMBINED TREATMENT WITH ESTROGEN AND ANDROGEN

1955 ◽  
Vol 33 (1) ◽  
pp. 667-676
Author(s):  
R. H. Common ◽  
W. A. Maw ◽  
D. S. Layne
Keyword(s):  
Crude Protein ◽  
Great Increase ◽  
Combined Treatment ◽  
Live Weight ◽  
Estradiol Benzoate ◽  
The Other ◽  
Control Group ◽  
Control Groups ◽  
Kidney Weight ◽  
Androgen Treatment

Sexually immature pullets were given a combined estrogen–androgen treatment, consisting of estradiol benzoate (ODB) plus testosterone propionate (TST). The influences of thiouracil and of thyroxine on various responses to this treatment were studied in two experiments. Thiouracil depressed slightly the hypertrophy of the oviduct evoked by ODB + TST; thyroxine enhanced the hypertrophy in one experiment, but depressed it in the other. Thiouracil enhanced, and thyroxine depressed the hypertrophy of the liver evoked by ODB + TST. Thiouracil also enhanced the increase of liver crude protein per kgm. live weight evoked by ODB + TST. The slight increase of liver deoxyribonucleic acid phosphorus (DNAP) per kgm. live weight evoked by ODB + TST was also enhanced by thiouracil and depressed by thyroxine. The great increase of liver pentose nucleic acid phosphorus (RNAP) per kgm. live weight evoked by ODB + TST was enhanced by thiouracil, but was depressed by thyroxine. The great increase in the ratio RNAP: DNAP in liver evoked by ODB + TST was not modified by thiouracil, but it was depressed by thyroxine. In one experiment, ODB + TST increased kidney weight per kgm. live weight; and this effect was enhanced by thiouracil and by thyroxine. In the other experiment, ODB + TST did not affect kidney weight, but the kidney weight per kgm. live weight was greater in the groups receiving either thiouracil or thyroxine than in the control group. ODB + TST did not affect kidney DNAP or RNAP per kgm. live weight, and a slight increase in kidney RNAP: DNAP observed in both experiments fell short of significance at P = 0.05. Both kidney RNAP and DNAP were significantly greater in the groups receiving thiouracil or thyroxine than in the control groups. ODB +f TST evoked a slight increase in the ratio RNAP: DNAP in kidney, and this effect was greatly enhanced by either thiouracil or thyroxine. In confirmation of previous work, the hypercalcemia evoked by ODB + TST was depressed by either thiouracil or by thyroxine.

scholarly journals Efficiency Of Using Domestic Feed Additive On Biological And Physiological Indicators Of Rabbits

2021 ◽  
Vol 03 (04) ◽  
pp. 1-6
Author(s):  
K. I. Khidirov ◽  
◽  
G. J. Kutlieva ◽  
B. I. Turaeva ◽  
N. A. Elova ◽  
...  
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Live Weight ◽  
Biologically Active ◽  
Feed Additive ◽  
Control Group ◽  
Control Groups ◽  
Physiological Indicators ◽  
High Level ◽  
Experimental Group

Research has been carried out to study the influence of "ProBioKorm Uz", a biologically active feed additive, on the development and physiological characteristics of rabbits of ‘New Zealand’ breed. During the experiment, 2 experimental and a control groups were formed. Adding "ProBioKorm Uz" to the main feed at the rate of 1% and 2% had an increase in experimental group rabbits’ live weight. Average live weight of them was higher by 5,7 %-3.8% than in the control group. Feed units composed 1.59%, dry matter 0.56 kg (3.61%) and crude protein 0.11 kg (3.59%) compared with the control group. Rabbits of experimental groups had higher indicators of erythrocytes concentration by 0.34-1.00 1012/l (10.34-19.53%), leukocytes - by 0.370-0.46 109/l (5.66-8, 06%), as well as a high level of hemoglobin by 7.42-11.08 g/l (6.81-10.08%) and total protein - by 2.40-4.48 (3.64-6, 42%).

EFFECTS OF DESICCATED THYROID ON NON-ESTROGENIZED AND ESTROGENIZED SEXUALLY IMMATURE PULLETS

1960 ◽  
Vol 40 (2) ◽  
pp. 119-125 ◽  
Author(s):  
A. J. Moo-Young ◽  
K. A. McCully ◽  
R. H. Common
Keyword(s):  
Intramuscular Injection ◽  
Crude Protein ◽  
Dry Matter ◽  
Estradiol Benzoate ◽  
Kidney Weight ◽  
Total Crude Protein ◽  
Stimulation Of ◽  
Liver Tissues

Inclusion of 0.5 per cent desiccated thyroid in the food of unestrogenized immature pullets for 14 days reduced thyroid weight, reduced serum Ca slightly but significantly, increased liver total crude protein, liver total DNAP and total RNAP, but did not alter the ratio RNAP:DNAP in the liver. These results are regarded as indicative of stimulation of growth of liver tissues by the thyroidal treatment.Daily intramuscular, injection of 1.0 mg. estradiol benzoate for 14 days greatly increased serum Ca and liver total crude protein, increased slightly liver total DNAP and increased greatly liver total RNAP and ratio RNAP: DNAP in the liver. The thyroidal treatment reduced estrogen-induced increase of serum Ca and of liver crude protein but did not alter significantly the effects of estrogen on liver DNAP and RNAP.The thyroidal treatment increased kidney weight in both unestrogenized and estrogenized pullets.Estrogen treatment increased kidney weight and the percentage of dry matter in the kidney.The thyroidal treatment did not affect the degree of estrogen-induced hypertrophy of the oviduct.

scholarly journals To determine how the effect of station technique on students’ achievement in astronomy subjectsAstronomi konularında istasyon tekniğinin öğrencilerin akademik başarısına nasıl etki ettiğini belirlemek

2017 ◽  
Vol 14 (4) ◽  
pp. 4561 ◽  
Author(s):  
Hamza Albayrak ◽  
Paşa Yalçın ◽  
Sema Altun Yalçın
Keyword(s):  
Quantitative Methods ◽  
T Test ◽  
The Other ◽  
Control Group ◽  
Science Lesson ◽  
Test Model ◽  
Meaningful Difference ◽  
Control Groups ◽  
Other Hand ◽  
Post Test

In this research, it was aimed to determine the effect of learning stations designed for astronomy subjects on the academic achievement of students and give an alternative method for teaching astronomy in the literature. The mixed approach in which mixed quantitative and qualitative methods were used together was preferred in the study. Among the quantitative methods, the pre-test and post-test model of the semi-experimental method was used; in addition, the protocols were applied about the method, which was used. The research was carried out with 98 seventh class students, who were under education in a secondary school located in the Eastern Anatolia Region of Turkey in the education year of 2015-2016. The quantitative data were analysed via the Astronomy Achievement Test (AAT) developed by the researchers and had 0,795 Cronbach Alpha reliability coefficient. The astronomy subjects in science lesson of the seventh class were studied with the experimental group through the learning stations; on the other hand, they were studied with the students in the control group through the activities stated in the textbook prepared by the Ministry of Education. The AAT was applied for the experimental, control groups using the pre- and post-tests, and data were analysed with the t-test. Meaningful difference was determined in AAT pre-test average scores of experimental and control groups; on the other hand, a meaningful difference was determined between the groups according to the independent samples t-test results applied with the average scores of the post-test(p<0.05). As a result of the analysis of the data gathered with the Station Observation Form (SOF), developed for the research, it was found out that the students recognise the learning stations as a technique of useful, entertaining, engaging, and easy-to-learn that enable them to learn astronomy topics effectively.Extended English abstract is in the end of Full Text PDF (TURKISH) file. ÖzetBu araştırmada, astronomi konuları için tasarlanan öğrenme istasyonlarının öğrencilerin akademik başarılarına etkisini belirlemek ve literatüre astronomi öğretimi için alternatif bir yöntem sunmak amaçlanmıştır.  Araştırmada karma nicel ve nitel yöntemlerin birlikte kullanıldığı karma yaklaşım tercih edilmiştir. Nicel yöntemlerden yarı deneysel yöntemin ön test- son test modeli kullanılmış olup ayrıca uygulanan yöntem hakkında öğrenci görüşmeleri yapılmıştır. Araştırma 2015- 2016 eğitim öğretim döneminde Doğu Anadolu Bölgesinde yer alan bir ortaokulda öğretim gören 98 yedinci sınıf öğrenci ile yürütülmüştür.  Nicel veriler için araştırmacılar tarafından geliştirilen ve cronbac’h alpha güvenlik katsayısı 0.795 olan Astronomi Başarı Testi (ABT) kullanılmıştır.  Yedinci sınıf fen bilimleri dersi içerisindeki astronomi konuları deney grubu ile öğrenme istasyonları yardımıyla, kontrol grubundaki öğrencilerle MEB’in ön gördüğü ders kitabında yer alan etkinlikler takip edilerek işlenmiştir. ABT deney ve kontrol gruplarına ön test- son test olarak uygulanarak t testi ile analiz edilmiştir. Araştırmada deney ve kontrol gruplarının ABT ön test ortalama puanları arasında anlamlı bir farklılık belirlenmişken, son test puan ortalamaları ile yapılan bağımsız örnekler t testi sonuçlarına göre gruplar arasında anlamlı bir farklılık belirlenmiştir (p<0.05). Araştırma için geliştirilen İstasyon Gözlem Formu (İGF) ile elde edilen verilerinin analizi sonucunda öğrenciler öğrenme istasyonlarını, astronomi konuları için etkili öğrenmeyi sağlayan, faydalı, eğlenceli, ilgi çekici ve kolay öğrenmeyi destekleyen bir teknik olarak gördükleri bulunmuştur.

scholarly journals The use of amaranth (genus AmaranthusL.) in the diets for broiler chickens

2012 ◽  
Vol 51 (No. 7) ◽  
pp. 399-407 ◽  
Author(s):  
B. Pisarikova ◽  
Z. Zraly ◽  
S. Kracmar ◽  
M. Trckova ◽  
I. Herzig
Keyword(s):  
Broiler Chickens ◽  
Live Weight ◽  
Control Group ◽  
Feed Conversion ◽  
Feeding Trial ◽  
Control Groups ◽  
Broiler Performance ◽  
Amaranth Grain ◽  
Percentage Yield ◽  
Experimental Group

The objective of our study was to test amaranth grain or dried biomass in the diet for broiler chickens as a resource of protein replacing animal protein. Further, the effect of amaranth on broiler performance, carcass characteristics and meat quality were assessed in a feeding trial. The experimental groups of broilers were fed feed mixtures with crude amaranth grain (AC), heat processed amaranth grain (AP) or dried above-ground biomass (AB). Control groups (C) received the diet containing animal proteins. The results obtained in the experimental groups of broiler chickens can be compared to the control group in all the production indicators under investigation. On day 42 of the experiment, live weight (g) of female broilers ranged from 2 205.1 &plusmn; 152.5 (AP) to 2 254.0 &plusmn; 136.5 (C), and that of male broilers from 2 375.1 &plusmn; 233.0 (AC) to 2 506.0 &plusmn; 286.0 (C). Feed conversion ranged from 1.80 kg in control group of male broiler chickens to 1.91 kg in experimental group of male broilers (AB). Percentage yield in female broiler chickens ranged from 70.8 &plusmn; 1.74 (AB) to 72.4 &plusmn;3.34(AC) or 72.4 &plusmn; 1.98 (C), and in male broilers from 72.8 &plusmn;3.55(AP) to 75.1 &plusmn;2.44(AB). Our results showed that amaranth can fully replace meat-and-bone meals in the diets for broiler chickens.

scholarly journals 380 Effects of estradiol benzoate on reproductive characteristics in beef cows

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 145-145
Author(s):  
Lacey M Dysart ◽  
Caleb O Lemley ◽  
Riley Messman ◽  
Jamie E Larson
Keyword(s):  
Doppler Ultrasonography ◽  
Blood Perfusion ◽  
Beef Cows ◽  
Estradiol Benzoate ◽  
Pregnancy Rates ◽  
The Other ◽  
Control Group ◽  
Blood Samples ◽  
Doppler Probe ◽  
Imagej Software

Abstract Ovulation prompted by exogenous GnRH may cause the release of sub-mature oocytes and lead to decreased pregnancy rates. Inclusion of estradiol benzoate (EB) has improved pregnancy rates. The objective was to determine if EB affects blood perfusion of follicles, CL, or uterus, concentrations of estradiol, or incidence of standing estrus. Forty-seven suckled beef cows were synchronized (GnRH+CIDR on d -9, PGF2a+CIDR removal on d -2, expected estrus=d 0). On d -1, 24 of 47 cows received an injection of EB (1mg/2mL) while the other 23 remained as a control group. Ovaries were evaluated via Doppler ultrasonography on d -1, 0, 6, 14, and 21. A laser Doppler probe was used to measure blood perfusion of the uterus on d -1, 0, and 6. Only cows that exhibited estrus (n = 29) were evaluated on d 14 and 21. Images were analyzed via ImageJ software to determine mean area of perfusion. Blood samples were collected on d -1 and 0 and analyzed for concentrations of estradiol using RIA. Using SAS, MIXED and FREQ were used to determine the influence of treatment on blood perfusion and estradiol, and incidence of standing estrus, respectively. Treatment with EB increased (P &lt; 0.001) the number of cows exhibiting standing estrus compared to control (21/24 vs 8/23, respectively). Treatment of EB did not (P &gt; 0.10) alter blood perfusion of the follicles or uterus on any day or perfusion of the CL on d 6. However, EB increased (P &lt; 0.036) the size of the CL on d 14 (25.06±1.7 vs 6.06±3.7) and tended (P &lt; 0.097) to increase the size of the CL on d 21. Treatment of EB increased (P &lt; 0.003) concentrations of estradiol on d 0 compared to control (21.35±4.49 vs 9.44±4.61 pg/mL). In conclusion, treatment with EB may play a role in changing the CL after ovulation.

Further studies on the fattening value of grass silage and on the effect of the dry-matter percentage of the diet on dry-matter intake in ruminants

1954 ◽  
Vol 44 (4) ◽  
pp. 383-393 ◽  
Author(s):  
T. L. Dodsworth
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Live Weight ◽  
Matter Content ◽  
The Other ◽  
Dry Matter Intake ◽  
Dry Matter Content ◽  
Feeding Trial ◽  
Grass Silage ◽  
Weight Gains

1. A feeding trial is described including four groups of cattle fed on silage only, two mixtures of silage and roots, and roots, straw, hay and oats.2. The live-weight gains made are recorded together with the rate of dry-matter intake.3. The efficiency of the dry matter of the diets was calculated.4. Silage fed alone produced a significantly greater rate of fattening than the other three diets.5. Cattle receiving roots in the morning and silage at night consumed 10·78% more dry matter and made greater live-weight gains than cattle fed on silage in the morning and roots at night.6. Calculation of the starch values of the roots and silage showed that these are higher when fed together than when silage is fed alone or when roots are fed with straw, hay and oats.7. An experiment is described designed to determine the effect of the dry-matter percentage of the diet on dry-matter intake in ruminants and of sudden changes in dry-matter content on digestibility.8. Sheep receiving 19·46% dry-matter silage consumed 16·7% more dry matter and 19·8% more starch equivalent than sheep eating 15·85% dry-matter silage.9. When the dry-matter percentage of the silage fell from 19·46 to 15·77 the digestibility of the dry matter fell by over 10%.10. The starch equivalent of the silage when fed alone was determined from the results of a digestibility trial and according to the performance of the cattle in the feeding trial. The values found were 65·88 and 66·15% respectively.11. The losses suffered in silage-making in twentyfive silos are recorded and discussed. The loss of dry matter and crude protein both average approximately 40% of that ensiled. The need for finding methods of reducing these losses is again stressed.

scholarly journals Reduction of the oestrogenic effect of zearalenone in pigs by a feed additive

2014 ◽  
Vol 83 (1) ◽  
pp. 33-38 ◽  
Author(s):  
Endre Brydl ◽  
András Ványi ◽  
Róbert Glávits ◽  
László Könyves ◽  
Pál Rafai
Keyword(s):  
Fusarium Species ◽  
Live Weight ◽  
The Other ◽  
Feed Additive ◽  
Control Group ◽  
Negative Effects ◽  
Large White ◽  
Beneficial Effects ◽  
Positive Effects ◽  
Spleen And Lymph Nodes

Zearalenone is phenolic resorcyclic acid lactone produced by a number of Fusarium species grown on grains, predominantly on maize, in high moisture environment. Due to its oestrogenic effects, feeds contaminated with zearalenone can cause striking negative effects on reproduction primarily in pigs. The aim of the study was to test the efficiency of a feed additive developed for enzymatic decomposition of mycotoxins. A total of sixty 6-week-old conventional Dutch Landrace × Hungarian Large White F1 female pigs weaned at 30 ± 2 days of age were divided into 6 groups of 10 animals. Between 50 and 70 days of age, 4 groups of pigs (experimental) were treated with zearalenone (8 or 16 mg/pig dose) administered every other day via an oesophageal tube; pigs from the other two groups were not treated with zearalenone and served as controls. Throughout the experiment, the diet of two experimental groups and one control group was supplemented with a feed additive (named: Detoxa Plus) at a concentration of 1 kg/tonne; pigs from the other control group received neither zearalenone treatment, nor the feed additive. Pigs’ live weight, weight of ovaries and uterus, histological characteristics of the ovaries, uterus, vagina, spleen and lymph nodes, liver concentrations of zearalenone and its metabolites (α- and β-zearalenol) were studied. This study showed the preventive capacity of the feed additive against zearalenone. Positive effects included the prevention of uterine enlargement, beneficial effects on the histopathological scores of ovaries, uterus and vagina and reduced concentration of zearalenone and metabolites in the liver. This study demonstrates for the first time that due to its enzymatic activity Detoxa Plus renders zearalenone contaminated feeds less toxic.

A note on the effect of sudden changes in the composition of the diet of growing pigs

1973 ◽  
Vol 16 (3) ◽  
pp. 315-317
Author(s):  
R. M. Livingstone
Keyword(s):  
Crude Protein ◽  
Fish Meal ◽  
Live Weight ◽  
Growing Pigs ◽  
The Other ◽  
Meat And Bone Meal ◽  
Bone Meal ◽  
Digestible Energy ◽  
Per Se

SUMMARYTwo diets, one based on barley and white-fish meal and the other on oats, wheat and meat and bone meal, with similar concentrations of digestible energy, crude protein, lysine and methionine+cystine were used to investigate the effects of sudden changes in the composition of the diet on the performance of pigs growing from 32 kg live weight, over a period of 77 days.The diets were given separately, alternated weekly with sudden changes from one diet to the other, or as a 1:1 mixture.Changes in diet per se had insignificant effects on performance.

scholarly journals Low-dose brain estrogen prevents menopausal syndrome while maintaining the diversity of the gut microbiomes in estrogen-deficient rats

2018 ◽  
Vol 315 (1) ◽  
pp. E99-E109 ◽  
Author(s):  
Sunmin Park ◽  
Da Sol Kim ◽  
Eun Seon Kang ◽  
Da Bin Kim ◽  
Suna Kang
Keyword(s):  
Normal Control ◽  
Gut Microbiome ◽  
Positive Control ◽  
Menopausal Symptoms ◽  
The Other ◽  
Control Group ◽  
Control Groups ◽  
Ovx Rats ◽  
Control Serum ◽  
17Β Estradiol

We evaluated the effects of intracerebroventricular administration (ICV) of brain estrogen and progesterone on menopausal symptoms and their effects on the secretion of follicle-stimulating hormone(FSH) and luteinizing hormone (LH) in estrogen-deficient rats. Three weeks after ovariectomy (OVX) or sham operation, OVX rats were given ICV infusions of either 17β-estradiol (4 μg/day; ICV-E), progesterone(0.8 μg/day; ICV-P), or vehicle (control) for 4 wk. OVX rats in the positive-control group were orally provided 150 μg 17β-estradiol·kg body wt−1·day−1. Sham rats had ICV vehicle infusion (normal-control). Serum 17β-estradiol levels of ICV-E and ICV-P groups were higher than the control group but much lower than the normal- and positive-control groups. Tail skin temperature was higher in the control group than the other groups. Serum FSH and LH levels were much higher in the control group than positive- and normal-control groups, but ICV-E and ICV-P lowered the levels similar to the normal-control treatment. ICV-E and ICV-P prevented the decreased energy expenditure in OVX rats. Homeostasis model assessment estimate of insulin resistance was lowered in the descending order of the control, positive-control, ICV-P, ICV-E, and normal-control treatments. The decreased bone mineral density was prevented by the positive-control, ICV-E, and ICV-P treatments. The control group exhibited decreased short-term memory and spatial memory compared with the other groups. Surprisingly, the control group exhibited a decreased richness of the gut microbiome compared with normal-control group, and ICV-E protected against the decrease the most. In conclusion, small amounts of brain estrogen and, to some extent, progesterone improved menopausal symptoms by decreasing serum FSH levels and maintaining the diversity of the gut microbiome in estrogen-deficient rats.

Sign in / Sign up

Export Citation Format

Share Document