Mohammad Javad Khalifeh; Mohsen Sari; Mehdi Dehghan banadaky
Volume 22, Issue 4 , December 2020, , Pages 537-547
Abstract
This experiment was conducted to study the effects of inclusion of sucrose with or without calcium salts of fish oil on growth performance, ruminal fermentation and blood metabolites of fattening Holstein steers. Thirty sixth Holstein bull calves (269±57 kg body weight and 7 months of age) ...
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This experiment was conducted to study the effects of inclusion of sucrose with or without calcium salts of fish oil on growth performance, ruminal fermentation and blood metabolites of fattening Holstein steers. Thirty sixth Holstein bull calves (269±57 kg body weight and 7 months of age) were used in a completely randomized design with a 2×2 factorial arrangement for 128 days. Dietary treatments were 1- control, 2- calcium salts of fish oil (Ca-FO) (2.5 % DM), 3- sucrose (SU)(5% DM), 4- SU and Ca-FO. Average daily gain increased with added SU (P<0.05). Diets containing Ca-FOreduced dry matter intake (DMI) and using SU and Ca-FO together increased DMI in this group (P<0.05). A tendency for higher organic matter digestibility obsereved in bulls fed Ca-FO (P>0.05). An increase in ruminal acetate concentration observed using Ca-FO in the diet, although Lower propionate and higher acetate concentrations were observed in rumen fluid of SU provided bulls (P<0.05). Addition of SU increased ruminal fluid pH (P<0.05). Feeding steers with Ca-FO increased plasma concentration of triglyceride and cholesterol (P<0.05). The results of this study showed that replacing corn grain with sucrose could have stimulatory effect on dry matter intake in Ca-FO containing diet, which have positive effects on average daily gain of fattening steers.
Mahmood Dashtizadeh; Mohsen Sari; Hassan Fazaeli
Volume 22, Issue 3 , September 2020, , Pages 365-377
Abstract
In order to study the effects of sunflower oil and Konar leaves addition on performance, meat quality and fatty acids profile, an experiment wasconducted using 32 Adani male goat kids, with 17.8 ± 2.2 kg initial BW in a completely randomized design with a 2×2 factorial arrangement for 75days. ...
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In order to study the effects of sunflower oil and Konar leaves addition on performance, meat quality and fatty acids profile, an experiment wasconducted using 32 Adani male goat kids, with 17.8 ± 2.2 kg initial BW in a completely randomized design with a 2×2 factorial arrangement for 75days. Goat kids were randomly assigned to one of four treatments: 1- control, 2- 20% Konar leaves, 3- 2.5 % sunflower oil and, 4- 2.5 % sunflower oil+ 20% Konar leaves. The results showed that treatments had no effect on feed intake and final body weight of goat kids. Oil inclusion in the diettended to increase daily weight gain (P=0.06) and tended to decrease feed conversion ratio (P=0.07). Dry matter, ash, and crude proteinconcentrations, color indices, malondialdehyde concentration and pH of longissimus dorsi (LD) muscle were not affected by treatments. Totalsaturated fatty acids (p < 0.05) and total N6 fatty acids (p < 0.01) of LD are affected by interaction of oil and Konar leaves supplementation. Inclusion ofkonar leaves in the diet increased the polyunsaturated fatty acids to saturated fatty acids ratio in LD muscle of goat kids (p < 0.05). The fat content ofLD muscle increased with the inclusion of oil to the diets (p < 0.01). The results of this study showed that using Konar leaves and sunflower oil in thediet of Adani goat kids can improve the nutritive value of their meat by reducing saturated fatty acids and increasing polyunsaturated fatty acids.
sadegh hosseini; morteza mamuei; saleh tabatabaei vakili; mohsen sari
Volume 19, Issue 1 , May 2017, , Pages 245-253
Abstract
The objective of this experiment was to study the effects of dietary nano-selenium supplementation on the glutathione peroxidase activity and sperm quality and quantity parameters of Arabian rams. In this experiment, twelve Arabian rams with an average weight of 73±3 kg and age of two to four ...
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The objective of this experiment was to study the effects of dietary nano-selenium supplementation on the glutathione peroxidase activity and sperm quality and quantity parameters of Arabian rams. In this experiment, twelve Arabian rams with an average weight of 73±3 kg and age of two to four years were used. Animals were divided into three groups: the control group (without -nano Selenium) and two experimental groups that received 0.4 and 0.8 mg nano-selenium per kg dry matter, respectively. The results showed that significant increase in semen selenium concentration and semen glutathione peroxidase activity in group 0.8 mg nano-selenium compared with the control group (P<0.05), but there was no significant difference between 0.4 mg nano-selenium per kg supplementation and control group. The volume of ejaculate, sperm motility and viability increased in treatments compared with the control. Spermatozoa concentration was increased in group 0.4 mg nano-selenium per kg, but it was decreased in Group 0.8 mg nano-selenium per kg. The percentage of sperm abnormality significantly increased in control compared with experimental groups. According to the results of this research, supplementation of 0.4 mg Nano-selenium per kg dry matter in the diet, increased the glutathione peroxidase activity in semen and improve the quality and quantity characteristics of sperm.