مقالههای I Fazhana
توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقالههای نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده میشوند.
اطلاعات انتشار: World Applied Sciences Journal، سي ام،شماره۲، ۲۰۱۴، سال ۰
تعداد صفحات: ۳
Twenty–seven 24–wk–old Red Jungle Fowl (RJF) males were arranged into 3 groups of nine birds of equal average BW. They were randomly assigned to 10, 16 and 20% protein diet. The 16% protein diet served as the control group for maintaining body weight (BW) received breeder–recommended male broiler breeder ration (standard, or ST; 16% CP, 3000 kcal ME\kg). The group fed at 10% and 20% protein diet were also fed with 3000 kcal ME\kg, formulated to approximate minimum amino acid requirements for positive nitrogen balance. All groups received equal quantities of feed. Body weight gain, daily feed intake, semen and fertility were evaluated for consecutive 17 weeks. The dietary protein was significantly affected on BW gain. Birds fed the 10% protein diet had the lowest weight gain percentage; while birds fed 16 and 20% protein became similar in BW gain percentage within experimental period. Feed intake was unaffected by dietary protein level. However, 10 and 20% protein diet had adverse effects on semen quality such as semen volume, sperm concentration, sperm motility, lives spermatozoa percentage and fertilizing capacity as determined by fertile egg count or Semen Quality Factor (SQF) calculation. The 16% dietary protein is the optimum level for breeder males to maintain their reproductive performance.
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