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Vet Med Sci 2022 May 18. Epub 2022 May 18.

Animal Science Department, College of Agriculture and Natural Resources, Razi University, Kermanshah, Iran.

Context: Full fat soybean (FFSB) can be used in poultry diets as a source of fat and protein, without extra cost for oil extraction; however, raw FFSB contains several anti-nutritional factors.

Aims: Investigating the effects of replacing dietary soybean meal (SBM) with processed (roasted or autoclaved) FFSB on the performance of laying hens and egg quality traits.

Methods: A total of 324 Bovans White strain laying hens were randomly selected and distributed in 54 replicate cages. Read More

Animal 2022 May 13;16(6):100532. Epub 2022 May 13.

Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Animal Embryo and Molecular Breeding, Nanhu Road, No. 1 of Nanhuyaoyuan, 430064 Wuhan, China. Electronic address:

Magnolol and its isomer honokiol are polyphenols with anti-oxidative and anti-inflammatory activities. We evaluated the effects of magnolol and honokiol supplementation alone or in combination with hen diets during the late laying cycle. A total of 540 Jingfen pink-shell laying hens (50 weeks old) were randomly assigned to six treatments: a control diet and diets supplemented with 300 mg/kg magnolol (M), honokiol (H), or 300 mg/kg total phenols with a magnolol/honokiol ratio of 2:1 (MH), 1:2 (MH), and 1:1 (MH). Read More

Front Physiol 2022 28;13:887381. Epub 2022 Apr 28.

Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, China.

Nutrition during the pre-lay period takes effect on the production performance in the laying flock. This study evaluated the effects of dietary energy and protein levels in pre-lay diet on performance during the whole laying period and the egg quality, bone quality, and mRNA expression of hypothalamus-pituitary-gonadal (HPG) axis-related genes of hens at the end of the laying cycle. A total of 1,856 15-wk old Hy-Line brown pullets were randomly assigned to one of the four dietary treatments: using a 2 × 2 factorial arrangement with 2 energy levels (2,700 and 2,800 kcal/kg ME, respectively) and 2 protein levels (15 and 16. Read More

Front Vet Sci 2022 28;9:880790. Epub 2022 Apr 28.

Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt.

Heat stress (HS) induces deleterious effects on the performance of laying hens and causes economic losses for poultry industry. This study was carried out to investigate the organic effect of selenium-enriched yeast (SY) on relieving the performance, immunity and physiological deterioration induced by heat stress in laying hens. A total of 324, 28-week-old, Hy-Line Brown commercial chicken layers were randomly distributed into 4 treatments according to a 2 × 2 factorial design, with 9 hens × 9 replicates per treatment ( = 81). Read More

Front Nutr 2022 27;9:868093. Epub 2022 Apr 27.

Department of Animal Science and Technology, Shandong Agricultural University, Taian, China.

This study was conducted to investigate the effects of DSM5749 on the production performance and intestinal health in laying hens. A total of 32-week-old laying hens (Hyline Brown) were randomly assigned to two dietary groups (10 replicates of 27 laying hens), namely, basal diet and basal diet complemented with 200 g/t (3.2 × 10 CFU/kg). Read More