1- Sari University of Agriculture and Natural Resources- Sari- Iran.
2- simorgh behin darou co.
2- simorgh behin darou co.
Abstract: (24 Views)
Introduction and objective:
In this study, the effect of different levels of CLA and Omega-3 supplements along with the essence of medicinal plants such as fennel powder, peppermint and eucalyptus on production performance, blood parameters and reproductive performance activity in laying hens of the Lohman breed was investigated.
Material and method:
This experiment was conducted on 60 pieces of chicken with 4 treatments with 5 repetitions and 3 samples in each repetition with an average weight of 1.5±0.2 and an age of 34 weeks in a completely randomized design for 42 days. The diets used include the control treatment (without additives) and the treatments containing 0.25, 0.375 and 0.5% CLA and omega-3 enriched with medicinal plants at 3 levels: 0.25, 0.375 and 0.5% were in rations. For one week before the start of the experiment, habituation to the ration and equalization of the weight of the chickens in the cage was done. Measurement of functional traits, egg production rate and average weight of eggs were measured daily, feed consumption and conversion rate were measured weekly. At the end of the test period, 2 eggs were randomly selected from each repetition and weighed with a digital scale with an accuracy of 0.001 grams. Then, the eggs were broken and the Haw unit, yolk color, and quality characteristics of the shell were measured. To measure blood parameters at the end of the experiment (42 days), blood samples were taken from the underwing vein of two pieces of chicken from each experimental unit, and then blood parameters (glucose, triglyceride, cholesterol, total protein, uric acid) were measured in the laboratory. In order to measure the characteristics and amount of liver fat, 2 pieces of chickens from each experimental group were randomly selected at the end of the period and after killing the chickens, their livers were examined. In order to investigate and measure reproductive characteristics, two chickens were randomly selected from each treatment at the end of the period and slaughtered, and then the contents of the abdominal cavity, including ovary, oviduct, stroma, and follicles were evaluated.
results:
The results of production performance showed that the high level of supplementation (0.5%) compared to other levels and the control treatment, caused better production performance and significantly increased the conversion rate of feed consumption to egg production (p<0.05). The results of the produced egg weight also showed that there was a statistically significant difference between the levels used and the control treatment (p<0.05). There was no significant difference between experimental treatments in shell thickness results (p>0.05). The results of blood serum parameters at the end of the 21st day of the experiment showed that there was a significant difference between the blood serum lipid parameters between the experimental treatments (p<0.05), so that the lowest amount of cholesterol was observed in the treatment containing 1% supplement. became. The results of ovarian follicle activity showed that there was a statistically significant difference between experimental treatments (p<0.05). Also, the results of evaluation of the appearance of the liver and the amount of total liver fat showed that there was a statistically significant difference between the experimental treatments (p<0.05). The overall results showed that the high level of CLA and Omega-3 supplements along with medicinal plants (0.5+0.5) could improve the functional traits of laying hens of the Lehman breed. In the activity of ovarian follicles, an increase in the activity of follicles was observed with an increase in the supplement level in the diet compared to the control treatment. In the section of blood parameters, it was shown that with the increase of the supplement level in the test diets, except for VLDL and HDL, there was a significant decrease in other blood serum parameters.
Conclusion:
In general, the results showed that the use of lysophospholipid supplement not only does not have a negative effect, but also especially at the 1% level, it has positive results on production performance, blood parameters, liver characteristics and reproductive performance activity in laying hens of the Lohman breed.
In this study, the effect of different levels of CLA and Omega-3 supplements along with the essence of medicinal plants such as fennel powder, peppermint and eucalyptus on production performance, blood parameters and reproductive performance activity in laying hens of the Lohman breed was investigated.
Material and method:
This experiment was conducted on 60 pieces of chicken with 4 treatments with 5 repetitions and 3 samples in each repetition with an average weight of 1.5±0.2 and an age of 34 weeks in a completely randomized design for 42 days. The diets used include the control treatment (without additives) and the treatments containing 0.25, 0.375 and 0.5% CLA and omega-3 enriched with medicinal plants at 3 levels: 0.25, 0.375 and 0.5% were in rations. For one week before the start of the experiment, habituation to the ration and equalization of the weight of the chickens in the cage was done. Measurement of functional traits, egg production rate and average weight of eggs were measured daily, feed consumption and conversion rate were measured weekly. At the end of the test period, 2 eggs were randomly selected from each repetition and weighed with a digital scale with an accuracy of 0.001 grams. Then, the eggs were broken and the Haw unit, yolk color, and quality characteristics of the shell were measured. To measure blood parameters at the end of the experiment (42 days), blood samples were taken from the underwing vein of two pieces of chicken from each experimental unit, and then blood parameters (glucose, triglyceride, cholesterol, total protein, uric acid) were measured in the laboratory. In order to measure the characteristics and amount of liver fat, 2 pieces of chickens from each experimental group were randomly selected at the end of the period and after killing the chickens, their livers were examined. In order to investigate and measure reproductive characteristics, two chickens were randomly selected from each treatment at the end of the period and slaughtered, and then the contents of the abdominal cavity, including ovary, oviduct, stroma, and follicles were evaluated.
results:
The results of production performance showed that the high level of supplementation (0.5%) compared to other levels and the control treatment, caused better production performance and significantly increased the conversion rate of feed consumption to egg production (p<0.05). The results of the produced egg weight also showed that there was a statistically significant difference between the levels used and the control treatment (p<0.05). There was no significant difference between experimental treatments in shell thickness results (p>0.05). The results of blood serum parameters at the end of the 21st day of the experiment showed that there was a significant difference between the blood serum lipid parameters between the experimental treatments (p<0.05), so that the lowest amount of cholesterol was observed in the treatment containing 1% supplement. became. The results of ovarian follicle activity showed that there was a statistically significant difference between experimental treatments (p<0.05). Also, the results of evaluation of the appearance of the liver and the amount of total liver fat showed that there was a statistically significant difference between the experimental treatments (p<0.05). The overall results showed that the high level of CLA and Omega-3 supplements along with medicinal plants (0.5+0.5) could improve the functional traits of laying hens of the Lehman breed. In the activity of ovarian follicles, an increase in the activity of follicles was observed with an increase in the supplement level in the diet compared to the control treatment. In the section of blood parameters, it was shown that with the increase of the supplement level in the test diets, except for VLDL and HDL, there was a significant decrease in other blood serum parameters.
Conclusion:
In general, the results showed that the use of lysophospholipid supplement not only does not have a negative effect, but also especially at the 1% level, it has positive results on production performance, blood parameters, liver characteristics and reproductive performance activity in laying hens of the Lohman breed.
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