scholarly journals MONOCHROMATIC LIGHTING IN THE POULTRY HOUSE

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.


2011 ◽  
Vol 56 (No. 11) ◽  
pp. 483-489 ◽  
Author(s):  
M. Szczepkowski ◽  
Z. Zakęś ◽  
B. Szczepkowska ◽  
I. Piotrowska

The aim of the experiment was to determine the impact of sorting on the growth, survival, and cannibalism of pikeperch larvae during intensive culture in recirculation systems. Larvae aged 48 days post-hatch (DPH) were reared in three groups &ndash; small specimens (group S &ndash; average body weight 40 mg), large specimens (group L &ndash; average body weight 76 mg), and unsorted ones (group U &ndash; average body weight 55 mg). After three weeks of rearing, there were no statistically significant differences in specific growth rates among the groups. However, increases in biomass were higher in the sorted groups. Survival exceeded 50% in the sorted groups and 39% in group U. Higher cannibalism was noted in group U than in the sorted groups. Significant differences among the sorted groups were observed in cannibalism, which was higher in group L, and in natural and manipulation losses, which were higher in group S (P &lt; 0.05). During the first two weeks of rearing, the lowest cannibalism rates were observed in group S, the difference between groups S and U was statistically significant (P &lt; 0.05). The results of the experiment indicate that the sorting of pikeperch larvae has a positive impact on the survival rate, however, it has no impact on growth during their rearing in the RAS.


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.


Author(s):  
O.A. Volodchenko ◽  
V.B. Khudiakova ◽  
Yu.O. Volodchenko

The article considers the impact of changing training aids during weight training in the gym, without changing the amount of load and intensity. The study involved twenty-eight visitors to the gyms of the city of Kharkov, from 18 to 32 years and experience of one year. The study was conducted in two stages, the duration of each was 2 months. The control group was engaged without changing the exercises, and the experimental group with changing the exercises in the second stage. The volume and intensity of the load did not differ between the groups. Results. Anthropometric indicators were studied at the beginning and end of the second stage of the study. The equipment used Tanita RD 545 scales, an application for the My tanita mobile device, and an elastic band for measuring circles. The experimental group improved their results in the following indicators: body weight, fat percentage, muscle mass, shoulder circumference, chest and thigh circumference. At the end of the study, the experimental group surpassed the control group as a result of the following indicators: body weight, fat percentage, and muscle mass. The results of the circles of the muscle groups at the end of the study did not differ between the groups. Conclusions. Changing such factors of training influence as exercises has a positive effect on the result of fitness training in the gym. Despite the invariability of the amount of load and its intensity, the change in exercises led the participants of the experimental group to a significant improvement in performance, both in comparison with the beginning of the study and in comparison with the control group.


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.


2020 ◽  
Author(s):  
N. Zh. Stancheva ◽  
J. L. Nakev ◽  
D. B. Vlahova-Vangelova ◽  
D. K. Balev ◽  
S. G. Dragoev

Abstract The objective of this study was to determine the impact of dihydroquercetin from Siberian larch and dry distilled rose petals (DDRP) on growth performance, carcasses characteristics and blood parameters of lambs from the Bulgarian Dairy Synthetic population sheep. For the purpose of the study there were used 30 clinically healthy male lambs aged 65 days, levelled by live weight. They were housed in a totally indoor barn and were divided into one control and two experimental groups, each consisting of 10 animals that were fed for 50 days. The control group (C) was fed ground alfalfa + granulated compound feed. The experimental groups (D) and (R) were fed on the same diet supplemented either with 7.5 mg dihydroquercetin/kg/day or with 545 mg DDRP/kg/day respectively. The carcass yield of lambs having consumed dihydroquercetin or DDRP compared to lambs from control group C do not have significant differences (p > 0.05). The carcass conformation of C or R groups lambs do not differ (70% - class P, 30% - class O). The 90% of lamb's carcasses from the experimental group D were classified in class P. The dihydroquercetin feeding increases the relative fat content (p ≤ 0.01) of lamb carcasses but adversely affects their conformation. No significant differences (p > 0.05) were found between 1st h and 24th h post-mortem pH of control group C and experimental group D. Compared to them the pH values of the experimental group R were by 0.14-0.15 pH units lower (p ≤ 0.05). No significant differences (p > 0.05) were found in the blood count of the three studied groups of lambs. Exceptions were made for haemoglobin (HGL) in the experimental group D which were with 6-7 g/l higher (p ≤ 0.05) than these in control group C and experimental group R and the blood glucose (GLU) in the experimental group R which is with 0.25-0.28 mmol/l lower than determined in control group C and experimental group D.


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 (1) ◽  
Author(s):  
Tayeb & et al.

This study was conducted by using18 Awassiewes , 2-4 years aged, with average body weight 61.56 kg. The ewes  were randomly divided into three groups, six ewes in each group. All ewes received 1.5 kg/ dry matter  from the same basal diet  consist mainly of barley, wheat bran, soybean meal and wheat straw . The first group was fed on basal  ration only ( T1 ) ,while  45g /ewe /day sodium bicarbonate was  supplemented to the feed of  the second (T2)group and third (T3) group was supplemented with 45g sodium bicarbonate plus 0.5g mixture of Vitamin E and selenium /ewe/day. Results showed that the treatments hadsignificant increase( P < 0.05 ) on milk production of T3(739 g/d) than T1,T2(571and 599 g/d)respectively. No effect on average body weight, lactose, fat and protein percentage in milk. Rumen liquor pH, ammonia and total count of rumen bacteria and protozoa before feeding was not affected, while after 2hr of feeding, pH value of rumen liquor was increased  (P < 0.05) in T2 6.65 as compared with T1 5.62 and T3 6.13. Ammonia and microorganism concentration in rumen liquor and blood parameters were not affected by experimental treatments.


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