Fatemeh Mohammadpour; Hassan Darmani kuhi; Ardeshir Mohit; Mohammad Mahdi Sohani
Abstract
In this experiment, a total of 360 one day-old female Ross 308 broiler chicks in a completely randomized design with a 2 × 3 factorial arrangement were allocated to 6 dietary treatments, each replicated five times with 12 birds per replicate. The included factors were two levels of green tea extract ...
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In this experiment, a total of 360 one day-old female Ross 308 broiler chicks in a completely randomized design with a 2 × 3 factorial arrangement were allocated to 6 dietary treatments, each replicated five times with 12 birds per replicate. The included factors were two levels of green tea extract (GTE, 0 and 500 mg/kg diet) and three type of diets: 1- diet without dietary fat, 2- diet supplemented with soybean oil (SO) and 3- diet supplemented with Tallow (Ta). Use of GTE did not affect intestine microbial populations, intramuscular fat, oxidative stability of mat and performance in broiler chicken (p>0.05). Body weight gain and feed conversion ratio of chicks fed diet supplemented with SO or Ta was improved compared to the diets without fat (p < 0.05). Use of SO compared to Ta and diets without fat led to higher and lower abdominal fat and carcass yield, respectively (p < 0.05). GTE supplementation in diets high in fat was effective in decreasing abdominal fat percentage (p < 0.05). The broilers that received green tea extract and soybean oil had a higher lactobacillus populations than those fed GTE with Ta (p < 0.05). Dietary SO led to significantly greater intramuscular fat and thiobarbituric acid reactive substances (TBARS) values in thigh meat (p < 0.05). Based on the findings of this study, despite the improvement in gut microbial populations and carcass fat content by GTE addition in diets high in un/saturated fats, its effect on intramuscular fat contents and muscle antioxidant capacity was not significant (p>0.05).
seyed kamal hashemian; M. Mehri
Abstract
The objective of the present study was to investigate the preservative effect of green tea extract as a natural antioxidant on sperm quality parameters of rooster in the duration of an entire spermatogenesis cycle. Sixteen rooster divided into four aliquots and consumed diets supplemented with 0, 30, ...
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The objective of the present study was to investigate the preservative effect of green tea extract as a natural antioxidant on sperm quality parameters of rooster in the duration of an entire spermatogenesis cycle. Sixteen rooster divided into four aliquots and consumed diets supplemented with 0, 30, 60, 90 mg of green tea extract/kg of feed. On 0, 14, 28, 42, 56, 70 days after start semen fluid were collected and CASA for sperm motility, progressive motility, linearity (LIN), curvilinear velocity (VCL), amplitude of lateral head displacement (ALH), average path velocity (VAP), straight line velocity (VSL), nonapoptotic sperm and DNA fragmentation (by staining sperm with acridine orange). Treatments 3 and 4 reduced apoptotic sperm and improved some of sperm motion parameters such as ALH (P<0.05). However, in last days of experiment, treatment 4 had adverse effects on VAP and VSL (P<0.05). The least amount of green tea extract (30 mg/kg of feed) improved VAP (P<0.05). The results showed that daily consumption of 60 mg green tea extract/kg of feed, as a natural antioxidant, could possibly lead to improve some of sperm motion parameters and reduced apoptosis.
