Genotype-dependent impact of dietary vitamin D on laying hens.

Vitamin D has an integral part in calcium and phosphorus homoeostasis, which in turn plays a key role in egg production of hens. The present study aimed to investigate whether an additional vitamin D supplementation improves the laying performance and egg quality of hens according to their genetic potential. For this purpose, four layer lines (low performing: R11 and L68; high performing: WLA and BLA) supplemented either with 300 or 3000 IU vitamin D per kg feed were compared concerning serum 25-hydroxyvitamin D (25-OHD), calcium, phosphorus and alkaline phosphatase (ALP), laying performance and egg quality.

Genotypic and Dietary Effects on Egg Quality of Local Chicken Breeds and Their Crosses Fed with Faba Beans.

The quality of chicken eggs is an important criterion for food safety and the consumers' choice at the point of sale. Several studies have shown that egg quality can be influenced by the chickens' genotype and by the composition of the diet. The present study aimed to evaluate the effect of faba beans as a substitute for soybeans in the diet of chickens originating from traditional low-performance breeds in comparison with high-performing laying type hens and their crosses on egg quality parameters.

Correction: Jansen, S., et al. Relationship between Bone Stability and Egg Production in Genetically Divergent Chicken Layer Lines. 2020, , 850.

The authors wish to make the following corrections to this paper [...

Bone Health or Performance? Adaptation Response of Genetically Divergent Chicken Layer Lines to a Nutritive Calcium Depletion.

In modern laying hybrids, calcium (Ca) homeostasis is immensely challenged by daily eggshell calcification. However, excessive mobilization of Ca from bones may lead to osteoporosis, which then manifests in a high incidence of poor bone quality. The aim of this study was to characterize the hens' adaptation response to an alternating dietary Ca restriction.

Egg Production and Bone Stability of Local Chicken Breeds and Their Crosses Fed with Faba Beans.

Poultry production is raising concerns within the public regarding the practice of culling day-old chicks and the importation of soy from overseas for feedstuff. Therefore, an alternative approach to poultry production was tested. In two consecutive experiments, two traditional chicken breeds, Vorwerkhuhn and Bresse Gauloise, and White Rock as a commercial layer genotype as well as crossbreds thereof were fed diets containing either 20% vicin-rich or vicin-poor faba beans, though addressing both subjects of debate.

Meat Quality Parameters and Sensory Properties of One High-Performing and Two Local Chicken Breeds Fed with .

The current practices of the poultry industry have raised concerns among consumers. Among these is the culling of day-old male chicks of laying hybrids; a suitable alternative for this could be the use of dual-purpose breeds where both sexes are used. Another practice that causes concern is the import of large quantities of soybeans for feedstuff production.

Relationship between Bone Stability and Egg Production in Genetically Divergent Chicken Layer Lines.

Impaired animal welfare due to skeletal disorders is likely one of the greatest issues currently facing the egg production industry. Reduced bone stability in laying hens is frequently attributed to long-term selection for increased egg production. The present study sought to analyse the relationship between bone stability traits and egg production.

Growth Performance of Local Chicken Breeds, a High-Performance Genotype and Their Crosses Fed with Regional Faba Beans to Replace Soy.

The faba bean ( L.) is a native protein crop and considered a promising alternative to soybeans. Due to its anti-nutritive substances such as vicin and convicin (VC) its use in animal nutrition has been restricted.

Kinetic studies on clinical and immunological modulations by intramuscular injection of Escherichia coli LPS in laying hens.

The present study investigated clinical and immunological modulations due to intramuscular injection of Escherichia coli LPS in 49-wk-old laying hens over 48 h post injection (p.i.).

Safety and efficacy of Robenz 66G (robenidine hydrochloride) for chickens for fattening and turkeys for fattening.

Following a request from European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of Robenz 66G (robenidine hydrochloride (HCl)) when used as a feed additive for chickens for fattening and turkeys for fattening. The coccidiostat Robenz 66G is considered safe for chickens for fattening at the highest proposed level of 36 mg robenidine HCl/kg complete feed with a margin of safety of approximately 2.5.

Safety and efficacy of Deccox (decoquinate) for chickens for fattening.

Deccox, containing decoquinate as the active substance, is a feed additive intended to be used for the prevention of coccidiosis in chickens for fattening at a dose range of 20-40 mg/kg complete feed. Decoquinate from Deccox is safe for chickens for fattening at the highest applied concentration in complete feed of 40 mg/kg. No practically relevant interactions with other additives or veterinary drugs exist except with bentonite.

Safety and efficacy of Monteban G100 (narasin) for ducks for fattening.

Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of Monteban G100 for ducks. Monteban G100, containing narasin, is intended for the prevention of coccidiosis in ducks for fattening at a dose range of 60-70 mg/kg of complete feed. Narasin from Monteban G100 is safe for ducks for fattening at a level of 70 mg/kg complete feed with a margin of safety of about 4.

Safety and efficacy of Monteban G100 (narasin) for chickens for fattening.

The feed additive Monteban G100, containing the active substance narasin, an ionophore anticoccidial, is intended to control coccidiosis in chickens for fattening at a dose of 60-70 mg/kg complete feed. Narasin is produced by fermentation. Limited data on the taxonomic identification of the production strain did not allow the proper identification of strain NRRL 8092 as .

Safety and efficacy of Monimax (monensin sodium and nicarbazin) for chickens for fattening and chickens reared for laying.

The coccidiostat Monimax (monensin sodium and nicarbazin) is considered safe for chickens for fattening and chickens reared for laying at the highest use level of 50 mg monensin and 50 mg nicarbazin/kg complete feed. This conclusion is extended to chickens reared for laying. For both active substances, the metabolic pathways in the chicken are similar to those in the turkey and rat.

Scientific Opinion on the safety and efficacy of Aviax 5% (semduramicin sodium) for chickens for fattening.

The feed additive Aviax 5%, containing the active substance semduramicin sodium, an ionophore anticoccidial, is intended to control coccidiosis in chickens for fattening at a dose of 20-25 mg/kg complete feed. Semduramicin sodium is present in Aviax 5% in its mycelial form and is produced by fermentation of spp. (ATCC 53664).

Safety and efficacy of COXAM (amprolium hydrochloride) for chickens for fattening and chickens reared for laying.

The coccidiostat amprolium hydrochloride from COXAM is considered safe for chickens for fattening at 125 mg/kg complete feed. The margin of safety is at least 5. This conclusion is extended to chickens reared for laying.

Safety and efficacy of Coxar (nicarbazin) for turkeys for fattening.

The coccidiostat Coxar is safe for turkeys for fattening at the use level of 100 mg nicarbazin/kg complete feed, with a margin of safety of about 1.25. Nicarbazin, when ingested, is rapidly split in its two components 2-hydroxy-4,6-dimethylpyrimidine (HDP) and dinitrocarbanilide (DNC), which behave independently.

Safety and efficacy of Coxiril (diclazuril) for chickens reared for laying.

Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of Coxiril (diclazuril) for chickens reared for laying. Coxiril, containing 0.5% diclazuril, is intended for the prevention of coccidiosis in chickens reared for laying at a dose range of 0.

Safety and efficacy of Sacox microGranulate (salinomycin sodium) for rabbits for fattening.

Sacox microGranulates, containing salinomycin sodium (SAL-Na), for chickens for fattening and chickens reared for laying have been recently re-evaluated by Panel on Additives and Products or Substances used in Animal Feed. Following an urgent request from the European Commission, the safety and efficacy of the product when fed to rabbits for fattening was assessed based on the available data submitted by the applicant at the beginning of the assessment. SAL-Na is largely absorbed and metabolised.

Safety and efficacy of Coxiril (diclazuril) for pheasants.

Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of Coxiril for pheasants. Coxiril, containing 0.5% diclazuril, is intended for the prevention of coccidiosis in pheasants at a dose range of 1.

Safety and efficacy of Monimax (monensin sodium and nicarbazin) for turkeys for fattening.

The coccidiostat Monimax (monensin sodium and nicarbazin) is considered safe for turkeys for fattening at the highest use level of 50 mg monensin and 50 mg nicarbazin/kg complete feed. The simultaneous use of Monimax and certain antibiotic drugs (i.e.

Safety and efficacy of Avatec 150G (lasalocid A sodium) for chickens for fattening and chickens reared for laying, and modification of the terms of authorisation for chickens for fattening, chickens reared for laying, turkeys for fattening, minor avian species (pheasants, guinea fowl, quails and partridges) except laying birds.

Avatec 150G is an anticoccidial feed additive containing 15% of the active ingredient lasalocid A sodium, an ionophore anticoccidial. The tolerance study indicated that oral administration of lasalocid A sodium via feed at doses at and above the targeted lasalocid dose of 125 mg/kg was not tolerated in chickens for fattening. Consequently, no safe dose can be established by the tolerance study submitted.

Trajectory of sleep disturbances in patients undergoing lung cancer surgery: a prospective study.

Objectives: Patients with lung cancer report sleep difficulties to be frequent and bothersome symptoms. This study describes the trajectory of sleep from before and up to 12 months after surgery for lung cancer. Further, it investigates possible associations between sleep disturbance, demographic and clinical characteristics before surgery.

Safety and efficacy of Sacox microGranulate (salinomycin sodium) for chickens for fattening and chickens reared for laying.

Salinomycin sodium (SAL-Na) is active against certain Gram-positive bacteria, while Gram-negative species are resistant. SAL-Na at the proposed concentration is unlikely to increase shedding of , and and or induce resistance and cross-resistance to antimicrobials important in human and animal therapy. SAL-Na is safe for chickens for fattening at 70 mg/kg complete feed, for chickens reared for laying at 50 mg/kg complete feed in the first 12 weeks of life.

Effects of Graded Dietary L-arginine Supply on Organ Growth in Four Genetically Diverse Layer Lines during Rearing Period.

Little information has been available about the influence of genetic background and dietary L-arginine (Arg) supply on organ growth of chickens. Therefore, the present study examined the effects of a graded Arg supply providing 70, 100 and 200% of recommended Arg concentration on organ growth of female chickens from hatch to 18 weeks of age. The chickens derived from four layer lines of different phylogeny (white vs.