fatemeh sarlak; Arash Kheradmand; Alireza Rocky; Majid Khaldari
Volume 24, Issue 1 , April 2022, , Pages 109-116
Abstract
The aim of this study was to investigate the changes in some blood parameters in 15 Lori ewes during pregnancy and compare it with one month before pregnancy and lactation. Blood samples were taken from the jagulur vein before normal mating as a control, at the end of every three months of pregnancy ...
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The aim of this study was to investigate the changes in some blood parameters in 15 Lori ewes during pregnancy and compare it with one month before pregnancy and lactation. Blood samples were taken from the jagulur vein before normal mating as a control, at the end of every three months of pregnancy and two weeks after delivery during lactation, and the complete blood cell count of each sample was evaluated by a veterinary cell counter. In extensions, Giemsa staining and differential white blood cell count were performed and total plasma protein values were evaluated by refractometry. The number of red blood cells and the percentage of hematocrits during lactation were significantly reduced compared to pregnancy (P˂0.05). Mean cellular volume was reported in all periods in one spectrum. Decreases in mean hemoglobin levels of red blood cells, mean hemoglobin concentrations in red blood cells and platelet count in pregnancy were observed compared to before mating. The number of leukocytes and neutrophils increased around delivery and decreased after delivery. During pregnancy, the number of eosinophils increased significantly and decreased after delivery (P˂0.05). The number of monocytes and lymphocytes increased in late pregnancy and decreased during lactation (P˂0.05). The amount of total protein in the plasma decreased significantly from 150-100 days of gestation (P˂0.05). Thus, it is concluded that monitoring of changes in blood parameters of Lori ewes, dietary adjustment and preventive measures are necessary to prevent blood disorders such as anemia and thrombocytopenia.
Hoda Javaheri Barfourooshi; Hasan Sadeghipanah; Nader Asadzadeh; nader papi; Fazlolah Mousavipoor
Volume 22, Issue 3 , September 2020, , Pages 479-490
Abstract
The effect of diets containing different sources of fat on milk production and composition, and mammary gland morphology of the 40 primiparous Saanen does was studied during the last two months of pregnancy to 12 weeks after kidding. Goats were divided into four groups of 10 each, based on the average ...
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The effect of diets containing different sources of fat on milk production and composition, and mammary gland morphology of the 40 primiparous Saanen does was studied during the last two months of pregnancy to 12 weeks after kidding. Goats were divided into four groups of 10 each, based on the average initial live weight and were assigned to one of four experimental diets. The diets included a non-fat diet, diet containing saturated fat, diet containing roasted soybeans, and a diet containing extruded flaxseed. The results showed that during the whole experimental period, milk production in goats fed with diet containing flaxseed was higher than in goats fed with non- fat diet or saturated fat diet (P<0.05). The average daily milk production of goats fed a diet containing flaxseed in the first, second, third, ninth, tenth, and twelfth weeks of lactation was higher than that of goats fed non-fat diet or saturated fat (P<0.05). The percentage of protein, lactose, solids not fat, and milk solids in non-fat diet goats were higher than the other groups (P<0.05). The percentage of fat to protein ratio in goats fed a diet containing unsaturated fat was higher than in other groups (P<0.05). Consumption of diets containing unsaturated fats improved the volume, environment, and size of mammary gland quarters (P<0.05). In general, the use of fat supplements rich in unsaturated fatty acids such as soybeans or flaxseed, in the close-up and early lactation diets could improve lactation performance in primiparous Sannen goats.
Parisa Yazdanshenas; Raana Jahanbin; Abdoullah Mohammadi Sangcheshmeh; Mehdi Aminafshar; Hossein Vaseghi Dodaran; Hamid Varnaseri; Mohammad Chamani; Mohammad Hassan Nazaran
Volume 18, Issue 1 , April 2016, , Pages 173-181
Abstract
This study aimed to investigate the effect of different concentration of zinc nano-complex on bull spermatozoa quality and pregnancy outcome after freeze-thawing process. Ejaculates were collected from four Holstein bulls, twice a week during four weeks. Semen samples diluted with Bioxcell extender containing ...
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This study aimed to investigate the effect of different concentration of zinc nano-complex on bull spermatozoa quality and pregnancy outcome after freeze-thawing process. Ejaculates were collected from four Holstein bulls, twice a week during four weeks. Semen samples diluted with Bioxcell extender containing zero (Control), 10-6, 10-5, 10-4, 10-3 and 10-2 M of zinc nano-complex. The samples were then freezed-thawed after 72 hours. Motility of sperm was analyzed using computer assisted sperm analysis. The highest and lowest concentrations of zinc nano-complex along with control group were analyzed for the DNA fragmentation, malondialdehyde (MDA) concentration, mitochondrial activity, and pregnancy outcomes. The proportion of the total and progressive motile spermatozoa and the percentage of spermatozoa with fragmented DNA were not different among the groups. However, the groups containing 10-6 and 10-2 M zinc nano-complex had a lower level of MDA concentration and higher activity of mitochondria. Moreover, the pregnancy outcome was not affected by the treatment with zinc nano-complex. In conclusion, our data revealed that supplementation of bull semen Bioxcell extender with zinc nano-complex can decrease the level of MDA and improve mitochondrial activity, although such an improvement was not reflected in results of fertility rates.