title: Evaluation of Yucca schidigera extract as feed additive on performance of broiler chicks in winter season.
abstract: OBJECTIVE
  Yucca schidigera extract has been successfully used as feed additives in the poultry industry. It enhances the growth and productivity in broiler production. Hence, the present study was designed to analyze the effect of Y. schidigera extract in growth, carcass quality and behavior along with its economical utility in broiler rearing.
  
  
  METHODS
  Total, 120 numbers of day-old broiler chicks of equal sex ratio were randomly divided into Yucca supplemented treatment and control group, each having 60 birds in three replications of 20 numbers. The feeding management and rearing conditions were similar for all the groups as per the standard except the Yucca supplementation in the treatment group @ 125 mg/kg of feed. The parameters with respect to growth, carcass, behavior, and litter content were recorded as per standard procedures.
  
  
  RESULTS
  The Yucca supplementation can effectively enhance growth of 173 g in 6(th) week by utilizing lesser feed intake than control group, which ultimately proves better feed conversion rate, protein efficiency ratio, and energy efficiency ratio in broiler production. Eviscerated weight of 58.50% for the treatment group was significantly higher (p<0.05) than 54.10% in the control group. The breast meat yield of Yucca group (32.23%) was significantly higher (p<0.05) than control (30.33%). More frequency of agonistic behavioral expressions was noticed in the control group than the treatment group. A profit of 43.68% was received by usage of Yucca supplementation in the diet on live weight basis. Numerically, lower percentage of moisture was present in Yucca treated group than the control.
  
  
  CONCLUSIONS
  From this study, it can be concluded that Yucca supplementation has an important role in augmenting broiler's growth performance, efficiency to utilize feed, protein and energy, and survivability. Hence, use of Yucca powder in broiler ration could be beneficial to maintain the litter quality, which directly enhances the productivity in broiler production without any adverse effect.
authors.affiliation: Division of Livestock Production Management, Indian Veterinary Research Institute, Izatnagar, Bareilly - 243 122, Uttar Pradesh, India.
authors.forename: Sarada Prasanna
authors.initials: SP
authors.lastname: Sahoo
authors.affiliation: Department of Livestock Production Management, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India.
authors.forename: Daljeet
authors.initials: D
authors.lastname: Kaur
authors.affiliation: Department of Animal Nutrition, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India.
authors.forename: A P S
authors.initials: AP
authors.lastname: Sethi
authors.affiliation: Department of Livestock Production Management, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India.
authors.forename: A
authors.initials: A
authors.lastname: Sharma
authors.affiliation: Department of Veterinary Microbiology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India.
authors.forename: M
authors.initials: M
authors.lastname: Chandra
keywords: Yucca schidigera; broiler; feed additives; winter season