shreif bkr

1. IntroductionThe misuse and overuse of antibiotics in humans and livestock animals are primary drivers of antimicrobial resistance [1,2], which is projected to become the leading cause of global human mortality by 2050 [1]. Consequently, the subtherapeutic use of medically important antibiotics for growth promotion and disease prevention in livestock has been banned in an increasing number of co ...

All commercial poultry eat with reasonably good precision to balance nutrient intake with requirements. Short term, there can be some variation in feed intake related to local situations, but long-term, the mechanisms of feed intake regulation are quite precise. Matching nutrient needs with intake is an obvious inherent evolutionary necessity to ensure survival and reproduction. A bird’s dai ...

A study was conducted to determine the effects of crude protein (CP) reduction with amino acid (AA) balanced diets on growth, carcass yields, litter characteristics, and ecological footprint of feeds in mixed-sex broilers. A total of 2,688 Cobb MV × 500 FF broilers were allotted to 4 treatments (14 replicates of 48 birds per pen) from 11 to 36 d of age reared in an open-sided barn. Dietary t ...

A medium sized broiler day old chick supplier into the Indonesian market, P.T. Peternakan Ayam Manggis, use Cobb 500 grandparent stock and have a production base of about 800,000 parent stock. They also have Hisex layer breeders and sell day old layers. Over the last decade, since switching to Cobb for broilers, they have been improving performance with investments in feed milling and other sector ...