PROTEIN IN ANIMAL FEEDS
3 Followers
Recent papers in PROTEIN IN ANIMAL FEEDS
Extremes of climate and hypobaric hypoxia cause poor growth performance in broiler chickens at high altitude and the present study investigates the effect of aqueous extract of Salix alba leaves on growth performance, antioxidant level... more
Extremes of climate and hypobaric hypoxia cause poor growth performance in broiler chickens at high altitude and the present study investigates the effect of aqueous extract of Salix alba leaves on growth performance, antioxidant level and immune status of broiler chickens reared at high altitude cold desert (3500 m). High performance liquid chromatography (HPLC) analysis of the extract revealed the presence of salicin and caffeic acid. In vitro efficacy evaluation revealed that the extract had a significant cytoprotective effect on lymphocytes. For in-vivo study, a total of 105 one d old RIR cross-bred broiler chickens were randomly assigned to seven groups: 1) Control fed basal diet and 2) Six treatments fed basal diet + S. alba extract @100, 150, 200, 300, 400, and 800 mg kg−1 body weight of chicken, respectively. Chickens in the Salix 300 group had greater body weight (p < 0.05) and improved feed conversion ratio (FCR) compared to other treatments. Furthermore, chickens had greater (p < 0.05) total antioxidant capacity (TAC), free radical scavenging activity, interleukin-2, and lower malondialdehyde (MDA), interleukin-1, and interleukin-6 concentration as compared to the control group. Net profit was also increased in all the treatments that were fed diet with S. alba extract due to less mortality in chickens. These findings indicated that inclusion S. alba extract at dose concentration of 300 mg kg−1 body weight of chicken, exhibited a beneficial effect on growth performance through immunomodulation and up-regulation of antioxidants, and therefore, it has a potential to be used as a phytogenic feed additive for improving broiler performance at high altitude.
- by Sahil Kalia and +3
- •
- Nutrition, Immune response, High altitude environments, Hypoxia
The analysis of forage quality of cocksfoot (Dactylis glomerata L.) and tall fescue (Festuca arundinacea Schreb.) (pure swards) and their mixtures with three subterranean clover (Trifolium subterraneum L.) subspecies in the followed... more
The analysis of forage quality of cocksfoot (Dactylis glomerata L.) and tall fescue (Festuca arundinacea Schreb.) (pure swards) and their mixtures with three subterranean clover (Trifolium subterraneum L.) subspecies in the followed relations: grass + Trifolium subterraneum ssp. brachycalicinum (50:50%); grass + Trifolium subterraneum ssp. yaninicum (50:50%); grass + Trifolium subterraneum ssp. subterraneum (50:50%); grass + Trifolium subterraneum ssp. brachycalicinum +Trifolium subterraneum ssp. yaninicum + Trifolium subterraneum ssp. subterraneum (25:25:25:25%) was performed. The field experiment was carried out at the Institute of Forage Crops, Pleven, Bulgaria (2011-2013). It was found that Trifolium subterraneum ssp. brachycalicinum in mixture with cocksfoot improves principal chemical composition and in vitro digestibility of forage biomass dry matter. The energy feeding value (Feed units for milk and Feed units for growth) was the highest for the mixtures of cocksfoot with Trifolium subterraneum ssp. brachycalicinum. The protein feeding value (Total digestible protein, PDIN, PDIE) significantly increased for all kind of cocksfoot – subterranean clover mixtures. Their forage quality was improved in comparison with the same mixtures of tall fescue. The principal chemical composition of forage obtained from cocksfoot – subterranean clover mixtures was more balanced - in vitro digestibility, net energy and protein feeding value were found be higher.