scholarly journals The influence of selenium and deiodinases blockers on juvenile rats body weight

2014 ◽  
Vol 68 (1-2) ◽  
pp. 3-9
Author(s):  
Svetlana Milanovic ◽  
Ivan Jovanovic ◽  
Jelena Bjelica ◽  
Srdjan Joksimovic ◽  
Srdjan Stefanovic ◽  
...  

In this work there was investigated the influence of selenium and deodinases blockers on juvenile rats body weight during three months. The experiment was carried out on 64 rats divided into eight groups with eight individual animals per group. Following groups were formed: 1. Se+PTU-IA- (control group), 2. Se+PTU+IA+, 3. Se+PTU+IA-, 4. Se+PTU- IA+, 5. Se-PTU-IA-, 6. Se-PTU+IA+, 7. Se-PTU+IA- and 8. Se-PTU-IA+. The groups labeled (Se+) were selenium adequate and they were fed with food that contained 0.334 mg Se/kg. The groups labeled (Se-) were selenium deficient and obtained food with 0.031 mg Se/kg. As deiodinases blockers there were used propylthiouracil (PTU+) in a dose of 150 mg/L of drinking water and iopanoic acid (IA+) in a dose of 6 mg/100 g TM intraperitoneally. Body weight of experimental rats was measured every seven days. After three weeks of treatment there were taken blood samples of animals from all experimental groups and following parameters were determined: selenium concentration in blood, thyroxine (T4), triiodothyronine (T3) and thyroidstimulating hormone (TSH) in blood plasma. Analysis of the samples showed that the animals from the groups treated with PTU had lower body weight in regard to the control group, as well as lower concentration of T3 and T4 in plasma. Selenium deficient rats had lower average body weight compared to the selenium adequate ones after three weeks, but there were no differences in thyroid hormones concentration. The lowest average body weight was noticed in selenium deficient rats groups treated with PTU.

2020 ◽  
Vol 51 (5) ◽  
pp. 1321-1328
Author(s):  
KAK & et al

The current experiment was designed to investigate the effect of zeranol implantation on lambs and goats’ kids raised under commercial conditions. Ten male Awassi lambs (AL) (4-5 months old) with an average body weight of 33.7 ± 0.5 kg and 10 male black goat kids (GK) (3-4 months old) with an average body weight of 18.8 ± 0.7 kg were used in the experiment. The experiment was conducted in Berebuhar village close to Duhok city in May the 15th, 2019The animals from each group were randomly divided into two subgroups, the first group was the control group and the other group was implanted with 24 mg zeranol. The animals were grown for 43 days and then slaughtered. Growth rate, average daily gain and carcass characteristics were measured. Data were analysed as factorial 2 × 2.  The results showed that implantation both animal groups with zeranol significantly reduced testicular weight by approximately 55 % and 71 % for goat kids and Awassi lambs respectively. Moreover, the results showed that zeranol implantation found to reduce total body fat from 892 to 816g in goat kids and from 3395 to 2856 g in Awassi lambs. It can be concluded that zeranol implantation has an effect on total body fat and fat tissue distribution. 


2019 ◽  
pp. 218-225
Author(s):  
A. S. Masel ◽  
I. L. Nikitina ◽  
D. A. Yablunovskaya ◽  
V. Kh. Tekueva ◽  
P. V. Popova ◽  
...  

Purpose. Evaluate the effect of metabolic control of gestational diabetes mellitus (GDM) on the perinatal period course and anthropometric parameters of newborns.Materials and methods. 300 newborns were divided into 4 groups depending on the metabolic control of the mother. Group 1: fasting glycemia <5.1 mmol/L, 1 hour after meals <7.0 mmol/L (n = 50); Group 2: <5.3 mmol/L and <7.8 mmol/L (n = 90); Group 3: > 5.3 mmol/L and> 7.8 mmol/L (n = 46), respectively; Group 4: control (n = 114). The analysis of the perinatal period course was carried out, the anthropometric parameters were estimated according to the tables INTERGROWTH-21st.Results. Differences in the frequency of obstetric injuries, which risk is associated with «above average» body weight of the newborn (p = 0.04), were found between the GDM group and the control group (38.7 and 12.3%, respectively, p = 0.0000005). The risk of having a baby with «above average» body weight (Group 1/Group 4, OR = 1.9, p = 0.1; Gr. 2/Gr. 4, OR = 2.6, and Gr. 3/Gr. 4, OR = 3.7, p <0.05), the ratio of weight/length (Gr. 1/Gr. 4, OR = 0.9, p = 0.9; Gr. 2/Gr. 4, OR = 3.6, and Gr. 3/Gr. 4, OR = 4.9, p <0.05) and head circumference (G.1/Gr. 4, OR = 1.1, p = 0.6; Gr. 2/Gr. 4, OR = 2.5, and Gr. 3/Gr. 4, OR = 2.9, p <0.05) was higher in Groups 2 and 3 than in Group 4. In the early neonatal period with GDM, hypoglycemia was more common than in the control Group 4. The lowest risk was in Group 1 (Gr. 1/Gr. 4, OR = 4.8; Gr. 2/Gr. 4, OR = 6.7; Gr. 3/Gr. 4, OR = 7.9, р < 0,05).Conclusions. Group 1 showed the lowest frequency and risk of adverse effects, which meets the control criteria of the Russian consensus.


Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 692
Author(s):  
Katsiaryna Lundova ◽  
Jan Matousek ◽  
Vlastimil Stejskal

The aim of the present study was to assess the effects of a prolonged photoperiod on growth rate and sexual maturation in brook trout Salvelinus fontinalis. The task of the experiment was to determine the most effective light regimen capable to minimizing the effects of puberty, including impairment of somatic growth and further general characteristics. In this regard, the studied fish were reared under three photoperiod regimens in which fish were exposed to 24 h continuous light alternating with 24 or 48 h under the ambient photoperiod or 48 h continuous light alternating with a 24 h ambient photoperiod. A control group was reared under the natural ambient photoperiod. Four-hundred and fifty fish with an average initial body weight of 101.3 ± 1.2 g were used for each experimental group (three replicates of each treatment plus control). A statistically lower growth rate showed control groups in both sexes. At the end of the study, control males had an average body weight of 226.6 ± 39.8 g and control females a body weight of 199.8 ± 12.2 g. At the same period, a significantly higher average body weight was found in groups reared 24 h under ambient photoperiod alternating with a 48 h continuous light regime (2CP:1AP) in both sexes (296.56 ± 62.5 g—males, and 239.9 ± 19.2 g—females, respectively). A significantly higher percentage of sexually mature fish was observed in the control group (80% of males and 29% of females, respectively). We found significantly fewer sexually mature females compared to males. The lowest survival was observed in group 2CP:1AP at 92%. It was concluded that regimen under which fish was exposed to 48 h of natural ambient photoperiod alternating with 24 h of constant light (1CP:2AP) lead to the successful delay of gonad development and onset of puberty and increased somatic growth in both sexes.


2015 ◽  
Vol 39 (2) ◽  
pp. 108-112
Author(s):  
Jassim E. AL-Mosawi

     This study was designed to investigate the effects of the addition of different ratios of sunflower oil to the diet of Awasi ewes on the rumen fermentation and milk composition. It was conducted by using 12 Awassi ewes (2-3.5 years old) with average body weight 56.62 kg. The ewes were randomly divided into three groups. Each group had four ewes according to the age, body weight and milk yield. The ewe in each group received 1.4 kg/ dry matter for three rations consisting of barley, wheat bran, soybean meal and alfalfa hay. The first group was fed on control ration, while 2.5 and 5 % of sunflower oil were included in the rations of the second and third groups, respectively. The results showed that the treatments had no significant effect on the average body weight, milk production and milk composition (lactose, protein and SNF percentage). Milk Fat percentage was significantly (P<0.05) decreased in second and third groups (4.30 ±0.31 and 4.23 ±0.40) %, respectively as compared with the control group (5.89 ±0.53 %). The pH value of rumen liquor in hours (0 and 3) after feeding showed no significant differences between groups, also there were no significant differences in the volatile fatty acid and ammonia concentration in the rumen liquor in all groups, despite that the volatile fatty acid decreased insignificantly in all treated groups as compared with the control group after feeding. The blood parameters were not affected by the experimental treatments. These results indicated that the fermentation patterns were affected by the increased oil supplementation to the diet of ewes.


2011 ◽  
Vol 54 (4) ◽  
pp. 406-418 ◽  
Author(s):  
S. Metzger ◽  
M. Odermatt ◽  
A. Szabó ◽  
I. Radnai ◽  
E. Biró-Németh ◽  
...  

Abstract. A total of 238 Pannon White growing rabbits were slaughtered at 74, 84 and 94 days of age, at an average body weight of 2.53, 2.84 and 3.15 kg, respectively. Within each age group five body weight categories were formed in such a way that the weight difference between two neighbouring groups was equally 0.3 kg. The design of the experiment permitted the separate examination of the effects exerted by age and body weight on carcass traits and on meat chemical composition of the left hind leg (HL) and that of m. Longissimus dorsi (MLD). Dressing out percentage significantly increased with the increase of age in all body weight categories, as well as with the increase of body weight. The effect of age on the ratio of the fore part of the carcass depended on the body weight: significant difference was found in lower body weight categories. The ratio of the intermediate part of the carcass was not affected by age but it increased in rabbits of higher body weight. The ratio of the hind part of the carcass increased in older animals, while it decreased in rabbits of higher body weight, and this decrease was higher in older rabbits. The ratio of the perirenal fat to reference carcass significantly decreased with age in all body weight categories, but it significantly increased in rabbits of higher body weight. With the advancement of age the moisture content of the HL increased, while that of the MLD did not change. With the increase of body weight, moisture content decreased in both the HL and in the MLD. The fat content of both HL and MLD decreased in older animals, while it increased in rabbits of higher body weight.


2011 ◽  
Vol 54 (4) ◽  
pp. 391-398 ◽  
Author(s):  
S. Kinal ◽  
M. Slupczynska

Abstract. The aim of the presented study was an estimation of the zinc bioavailability derived from amino acid complexes with methionine, lysine and glycine in growing lambs. 48 lambs, Polish Merino × Romanowski × Charolaise crossbreed, at age about 10 weeks and average body weight of 20 kg were randomly divided into 4 experimental groups. Animals were kept collectively and fed with concentrate and hay in amount: 0.7–1.2 and 0.3–0.5 kg/day/head, respectively. After rearing period 6 rams from each group with average body weight of about 30 kg were divided into digestibility-balance experiments. At the end of the experiment the blood samples were taken, then from each group 8 lambs were chosen, killed and during dissection tissue samples were taken (liver, pancreas, kidney and rib bone). In tissue samples as well as in fodders and excrements the content of zinc was determined. Obtained data in digestibility experiments allowed on calculation of apparent absorption and retention of zinc and the level of Zn determined in tissues’ samples were used to the estimation of bioavailability of zinc from different ones applied in experiment sources. Apparent absorption and retention of zinc were higher (P≤0.01) in lambs receiving in mixtures amino acid complexes of zinc than in animals from the control group. The higher content of zinc in soft and hard tissues of lambs which received organic forms of zinc might indicate better assimilation and bioavailability of zinc from these forms than from oxide. Among tested organic forms of zinc, the zinc-lysine complex was characterized as having the most advantageous property.


Author(s):  
I. V. Siianova

The paper explores the impact of monochromatic illumination on replacement chickens of Decalb White cross-breed in the conditions of the Amur region. The chickens were grown from 1 day to 115 days age. The research was conducted in the conditions of the poultry farm “Belogorskaya”. The authors arranged four groups according to the principle of steam-analogues; each group contained 200 chickens and the experiment was carried out in the production unit. The researchers used luminous tube lamp with different colour temperatures for lighting. White lighting was used in the control group, yellow - in the first experimental group, green - in the second experimental group and blue - in the third experimental group. The researchers made blood test of chickens aged 30, 60 and 90 days for morphological and biochemical analysis. The authors carried out control weighing of the poultry at that time. At the end of the experiment, three pullets from each group were slaughtered in order to study the organs. The paper highlights morphological and biochemical blood parameters of replacement chickens at the white light had lower deviations from the physiological rate than at yellow, green and blue lamps. At the beginning of growing under yellow lamps, the concentration of gamma-globulin fraction of protein in the blood serum of chickens was higher than the age rate and the content of albumins was lower. Compared to the control group, the amount of bilirubin (P<0.05) and the activity level of asparagine aminotransferase (P<0.001) were higher under green and blue lamps. In the middle and at the end of the growing period, the number of leukocytes, creatinine, uric acid and asparagine aminotransferase may have increased in chickens under green and blue light. The difference among the results of blood tests of chickens grown under white light was, mostly reliable. When controlling the growth and development of replacement chickens aged 30 and 60 days the authors observed that the average body weight of chickens in white light was 1.5-3.9% higher than in the poultry of experimental groups. The average body weight of the chickens aged 90 days from all the groups was at the same level. The results of the control slaughter of pullets aged 115-days and grown under different lighting conditions were similar, and their sexual maturity was the same.


Author(s):  
Asad Ali Khaskheli ◽  
Muhammad Ibrahim Khaskheli ◽  
Allah Jurio Khaskheli ◽  
Arshad Ali Khaskheli

Influence of photoperiod and light intensity on Bambusicola thoracicus was studied, whereby One Hundred birds were distributed into 5 treatment groups viz. A1, A2, B1, B2 and C. The birds in group A1 were treated with light intensity of 80 luxes/8 hours during growing period and 240 luxes/16 hours during laying period, group A2 with light intensity 20 luxes/8 hours during growing period and 60 luxes/16 hours during laying period. Birds in group B1 were provided photoperiod of 5 luxes/16 hours during growing and 15 luxes/20 hours during laying period, while in group B2 photoperiod of 5 luxes/12 hours during growing and 15 luxes/18 hours during laying period was provided. Group C was kept as control group. Results indicated average body weight of group A1, A2, B1, B2 and C, 196.25; 192.24; 186.98; 190.00 and 190.44g/b respectively, feed intake 202.13; 211.98; 230.11; 212.25 and 207.11g/b respectively. The FCR was recorded best in group A1, while carcass weight (99.57g), dressing percentage (52.02%) and egg length (33.11mm) was found higher in group A2. Average egg production percent was higher in group B1 (70.24), egg width in A1 (24.89) respectively. Study concludes that the Bambusicola thoracicus reared under 80 luxes light intensity for 8hrs per day during growing period and 240 luxes light intensity for 16hrs per day in laying period showed better FCR and feed intake, however egg production was observed better when birds were provided 5 luxes for 16hrs photoperiod during growing and 15 luxes for 20hrs photoperiod during laying period.


2012 ◽  
Vol 2 (1) ◽  
pp. 21-27
Author(s):  
Yosi Fenita

The objective of the research was to evaluate to effect of feeding mengkudu on performances of broilers. The research design used was completely randomized design. One hundred broilers were distributed into five treatments. The treatments were different levels of mengkudu meal (0, 0.75%, 1.5%, 2.25 % and 3%). The observed measured were feed consumption, average body weight (gain) and feed conversion. Results showed that feeding mengkudu (Morinda Citrifolia L.)  no effect significant (P>0.05) on feed consumption, average body weight and feed conversion.  In conclusion, feeding mengkudu meal up to 3% (in diet) does not negatively affect feed consumption, average body weight, and feed conversion.


Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1511
Author(s):  
Joseph P. Gulizia ◽  
Kevin M. Downs

Two trials were conducted to determine feed color effects on broiler performance. A completely randomized design was used. Trial 1 included four treatments: control (complete broiler starter diet), red, green, and blue; and Trial 2 included four treatments: control, orange, yellow, and purple. Each trial had 4 treatments with 4 replicates (60 birds/treatment) fed to 240 male Cobb 500 broilers during a 21 d grow out. Data were analyzed using the GLM procedure. In Trial 1, there were no treatment effects on average body weight, body weight gain, and feed consumption (p > 0.05). Adjusted feed conversion for control (1.23) was less than red (1.27; p = 0.001) and green (1.26; p = 0.009), with blue (1.25; p = 0.056) tending to be different during the experimental period. In Trial 2, there were no treatment effects on average body weight, feed consumption, and adjusted feed conversion during this study (p > 0.05). Body weight gain between d 1 to 14 for purple (490.78 g/bird) was more than orange (467 g/bird; p = 0.013) and yellow (461 g/bird; p= 0.004), with control (474 g/bird; p = 0.052) tending to be different. Results indicate that these feed colors had some, albeit limited, influence on broiler performance parameters.


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