aref kord; Arash Kheradmand; Alireza Rocky; Majid Khaldari
Volume 23, Issue 4 , January 2022, , Pages 515-524
Abstract
The aim of this study was to investigate the changes of some blood biochemical parameters in Lori-Bakhtiari ewes during different months of pregnancy and the influence of fetus numbers on these parameters. For this purpose, 20 ewes of Lori Bakhtiari breed were selected and mated with fertile rams. One ...
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The aim of this study was to investigate the changes of some blood biochemical parameters in Lori-Bakhtiari ewes during different months of pregnancy and the influence of fetus numbers on these parameters. For this purpose, 20 ewes of Lori Bakhtiari breed were selected and mated with fertile rams. One month before mating and in the first to fifth months of pregnancy blood samples were collected from ewes and biochemical and enzymatic parameters including calcium, phosphorus, magnesium, urea, creatinine, total bilirubin, AST, ALP and GGT were measured. The concentration of calcium and AST activity were constant at the times of the study, but they increased in the last month of pregnancy (P<0.05). Magnesium concentration increased in second month of pregnancy (P<0.05) and phosphorus concentration was decreased during pregnancy compared to the month before mating (P<0.05). Creatinine concentration decreased in the second and third months of pregnancy compared to other months of pregnancy (P<0.05). Total bilirubin and urea concentrations increased during fourth month and the second half of pregnancy, respectively (P<0.05). GGT activity was almost stable during study period but decreased in the fourth month of pregnancy (P<0.05), and ALP enzyme activity showed increasing trend during pregnancy period (P<0.05). The mean concentration of the studied parameters in singleton ewes was not significantly different from twins (P <0.05). Based on the results of this study, blood biochemical changes in Lori Bakhtiari ewes can be used to assess their physiological status during pregnancy.
Mohammad Reza Rezvani; Razieh Iranparast
Volume 22, Issue 1 , March 2020, , Pages 129-142
Abstract
The aim of this research was to study the effect of adding enzyme preparations and ration formulation on performance, nutrient digestibility and intestinal microflora of broilers. Two hundred and fifty six day-old male and female broiler chicks of Ross 308 strain were used in a 2×2×2 ...
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The aim of this research was to study the effect of adding enzyme preparations and ration formulation on performance, nutrient digestibility and intestinal microflora of broilers. Two hundred and fifty six day-old male and female broiler chicks of Ross 308 strain were used in a 2×2×2 factorial experiment consisting of two methods of diet formulation (total and digestible amino acid), two levels of Natuzyme Plus (0 and 0.035%) and two levels of Multi-behzyme (0 and 0.02%) as additives. The factors were arranged as a completely randomized design with eight treatments and four replications. Diet formulation based on total amino acids improved the average daily gain (ADG) and feed conversion ratio (FCR) during the grower and finisher and total periods, but decreased daily feed intake during the finisher and total periods (P ≤ 0.05). It also increased dry matter digestibility, dressing percentage and intestinal length, but it decreased fat digestibility (P ≤ 0.05). Natuzyme Plus increased dry matter, crude protein and fat digestibility and decreased the number of E .coli in the cecum. (P ≤ 0.05). Multibehzyme improved ADG during the grower period, FCR during the finisher period and total period and it increased dry matter, crude protein and crude fat digestibility (P ≤ 0.05). It was concluded that Multi- behzyme could be replaced with Natuzyme Plus, and its inclusion in the diets formulated by digestible amino acid and low protein content can improve the negative outcome of low level protein diets.
Sharifeh Ghavidel Heydari; Farzad Bagherzadeh Kasmani; Mehran Mehri
Volume 20, Issue 4 , February 2019, , Pages 601-611
Abstract
This experiment was conducted to assess the effect of safflower meal (SFM) containing microbial and enzyme supplementations on performance, meat quality and humoral immunity of Japanese quail. A total of 300 seven-days-old Japanese quails were assigned in a completely randomized design to five treatments, ...
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This experiment was conducted to assess the effect of safflower meal (SFM) containing microbial and enzyme supplementations on performance, meat quality and humoral immunity of Japanese quail. A total of 300 seven-days-old Japanese quails were assigned in a completely randomized design to five treatments, four replications and 15 chicks in each replication. The experimental treatments included 1) a corn and soybean meal based diet (control) 2) diet containing 20% SFM 3) diet containing 20% Fermented SFM 4) diet containing 20% SFM + Calsporin® probiotic at a rate of 50 mg/kg feed and 5) diet containing 20% SFM+ Endo-Power® enzyme to the amount of 125 mg/kg feed. The results of this study showed that the use of fermented SFM, Calsporin® probiotic and enzyme treatments improved weight gain and feed intake of chicks when compared to control group (P<0.05). The feed conversion ratio for the chicks in control group and quails receiving diets containing fermented SFM and SFM+ Endo-Power® enzyme was lower than that of other experimental groups (P<0.05). Birds fed with SFM had lower meat cooking loss (P<0.05). The meat water holding capacity and also antibody titer against sheep red blood cell (SRBC) were higher in treatment receiving fermented SFM when compared to control group (P<0.05). According to the positive effects of nutrition with fermented SFM and containing probiotic and enzyme supplements on performance, meat quality and immunity system of Japanese quail, this accessible and inexpensive source of protein could be used in quail diet.
tahereh mohammadabadi; Khalil Mirzadeh
Volume 19, Issue 4 , March 2018, , Pages 765-776
Abstract
This research was conducted to investigate the effect of processing sesame straw with low steam pressure, sulfuric acid and enzyme mixture on digestibility and ruminal fermentation, protozoa population, rumination and some blood parameters of Arabi sheep. Twelve sheep were fed with control diet (without ...
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This research was conducted to investigate the effect of processing sesame straw with low steam pressure, sulfuric acid and enzyme mixture on digestibility and ruminal fermentation, protozoa population, rumination and some blood parameters of Arabi sheep. Twelve sheep were fed with control diet (without sesame straw), diet containing sesame straw processed with 2.4 % sulfuric acid and low steam pressure at 130 °C for 120 minutes and 3 gr/kg DM enzyme, diet containing sesame straw processed by sulfuric acid and enzyme and diet containing sesame straw processed with water. The dry matter and organic matter intake, daily gain, feed conversion, apparent digestibility of dry matter, organic matter, NDF and ADF did not differ between treatments.The processing did not affect ammonia nitrogen, pH, and rumen protozoa species of sheep. Chewing, rumination and resting times were different between treatments and the greatest rumination time (491.67 minutes per day) was for processing with acid and enzyme (P<0.05). The eating, rumination and chewing time for dry matter, ADF and NDF, and blood glucose and urea of sheep were not different. Therefore, according to results of this experiment, sesame straw processed with water, processed with sulfuric acid and low steam pressure and enzymes and processed with acid and enzyme can be used at the expense of wheat straw in the sheep nutrition.