birth weight (bw) is the first trait recorded fllowing birth. it can influence the performance of thecow and as well impact the performance of the calf it,s duringits maturity. to investigate the effect ofa calf,s bw on the performance of holstein dairy cattle in iran, the records gathered between 1967 and2010 were obtained from the iranian animal breeding center. the data were then used to mod...

Both plant and animal ingredients are used commonly to formulate balanced diets for poultry. Although many changes have been occurred in the genetics, nutrition and feeding of modern meat chickens, free selection and indiscriminate uses of feedstuffs for the non-ruminant animal diets can be hazardous due to the emerging threat of diseases outbreak via animal by-products. Besides this, many othe...

background: one of the domains of scientific activities is working on animals. performing experiments on animals is per­missible only with the purpose of obtaining necessary information for saving and improving life of human be­ings or ani­mals. principally, all religions believe that human life is more valuable than animal life and humans have a god-given au­thority over animals, but they shou...

Animal welfare considerations are becoming increasingly important for farming of animals, both in Tunisia and internationally. Practices which may have once been deemed acceptable are now being reassessed in the light of new knowledge and changing attitudes. And a clearly defined concept of welfare is needed for use in precise scientific measurements. If animal welfare is to be compared in diff...

The base of this review is to consider the relevant role that animal factors (potential milk yield, body weight, body condition score, state of lactation, parity and fertility) play on milk performance (considering the energy balance and the rumen function across the full lactation curve of animals) and milk quality (milk protein content, milk fat content, milk lactose content, vitamins, minera...

Background: In recent years, dietary fat supplementation has become a common practice and fat supplemented diets have had variable effects on animal performance and carcass characteristics. OBJECTIVES: This study was conducted to determine the effect of  increasing the levels of sesame oil on performance, rumen parameters and plasma lipid profile in finishing Chal lambs. METHODS: Eighteen male ...

animal welfare considerations are becoming increasingly important for farming of animals, both in tunisia and internationally. practices which may have once been deemed acceptable are now being reassessed in the light of new knowledge and changing attitudes. and a clearly defined concept of welfare is needed for use in precise scientific measurements. if animal welfare is to be compared in diff...