نوع مقاله : مقاله پژوهشی
1 کاشناسی ارشد دانشگاه مهندسی کشاورزی ومنابع طبیعی گرگان
2 گروه تغذیه دام و طیور دانشگاه علوم کشاورزی و منابع طبیعی گرگان
3 گروه تغذیه دام و طیور، دانشکده علوم دامی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
4 دانشجوی دکتری فیزیولوژی دام دانشگاه علوم کشاورزی و منابع طبیعی گرگان
عنوان مقاله [English]
In order to investigate the effect of different levels of energy and protein on performance, digestibility, blood parameters and fertility of 18 female and three male rabbits were selected. Female rabbits were divided into three groups individually for two weeks and from the diet of treatments containing 1- low energy (2200 kcal) -low protein (14%) 2- medium energy (2400 kcal) -medium protein (16%) and 3- High energy (2600 kcal) -high protein (18%) was used in a completely randomized design. Female rabbits were weighed at the beginning of the period. The evaluation of performance, including daily weight gain, feed intake, and feed conversion ratio were measured in every 15 days. The apparent digestibility of dry matter, fecal sampling in the last 3 days of the experiment from 3 rabbits in each treatment measured using acid-insoluble ash method. Blood samples were taken before morning feeding to determine the blood parameters including triglycerides, blood urea nitrogen and blood glucose. After this period, a male rabbit was placed in the group for mating and the next day it was replaced with another. The mating period was six days. Reproductive factors including fertility, offspring and multiple births were examined.
Results showed that there was no significant difference between initial weight, final weight, daily weight gain and daily feed intake, feed conversion ratio and dry matter digestibility. Blood glucose had significant difference between treatments.The medium protein - energy treatment had the highest percentage of fertility. The offspring in low protein - energy showed the highest percentage.