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pro vyhledávání: '"35"'
Publikováno v:
Poultry Science. 93:1972-1980
A study was conducted to establish the dietary Thr requirement of Pekin ducks from 15 to 35 d of age. Experimental diets were formulated to contain 0.55, 0.60, 0.65, 0.75, and 0.85% Thr (0.57, 0.60, 0.64, 0.72, and 0.80% on an analyzed basis) and wer
Autor:
P. C. Harrison, Michael J. Darre
Publikováno v:
Poultry Science. 66:541-547
Two experiments were undertaken to determine selected cardiovascular responses of laying hens to a thermal challenge at 35 C ambient temperature. In the first, six Single Comb White Leghorn (SCWL) hens were exposed to 35 C and changes in systolic and
Autor:
Bertrand Grenier, Vivek Tanavde, Jeremy Le Coz, Candida Vaz, Suzana Ilic, Gerd Schatzmayr, Roger Berrios, Silvia Fibi-Smetana
Publikováno v:
Poultry Science, Vol 100, Iss 2, Pp 998-1003 (2021)
Poultry Science
Poultry Science
Antibiotics have played a critical role in sustaining and improving livestock production in the past decades, but the emergence of antimicrobial resistance has led several countries to ban or limit their use. Since then, in-feed alternatives have gai
Publikováno v:
Poultry Science, Vol 99, Iss 8, Pp 3823-3830 (2020)
Poultry Science
Poultry Science
The spleen is the largest peripheral lymphoid organ and an important site of immune response, in which the blood–spleen barrier (BSB) plays a significant role to resist various pathogens. The BSB structure of duck spleen is different from that of c
Publikováno v:
Poultry Science, Vol 99, Iss 5, Pp 2485-2493 (2020)
Poultry Science
Poultry Science
This study investigated the effects of ammonia (NH3) exposure (0, 15, 25, and 35 ppm) on growth performance and cytokines in the serum, trachea, and ileum of broilers. A total of 288 22-day-old male broiler chickens were assigned to 4 treatment group
Autor:
Xiaoyan Lin, Hongchao Jiao, Mengze Song, Jingpeng Zhao, Shuhong Sun, Haifang Li, Hai Lin, Xiaojuan Wang
Publikováno v:
Poultry Science
Poultry Science, Vol 99, Iss 2, Pp 734-743 (2020)
Poultry Science, Vol 99, Iss 2, Pp 734-743 (2020)
In poultry production, vaccination is an effective measure to protect chickens from diseases. Vaccination, however, is a stressor that may induce stress responses that interfere with the growth and development of chickens. The interaction between the
Autor:
C. Keerqin, Mingan Choct, Kosar Gharib-Naseri, Sarbast K. Kheravii, Shu-Biao Wu, Robert A. Swick, Natalie Morgan
Publikováno v:
Poultry Science. 98:6422-6432
Subclinical necrotic enteritis (NE) is primarily caused by the gram-positive bacterium, Clostridium perfringens (Cp). The trend towards removal of in-feed antimicrobials and subsequent increased emergence of infection in poultry has resulted in a wid
Publikováno v:
Poultry Science. 98:4375-4383
Nucleotide-rich yeast extract (YN) was investigated for its effects on growth performance, jejunal histomorphology and mucosal immunoglobulin A (IgA), immune organs weight and apparent retention (AR) of components in broiler chickens challenged with
Publikováno v:
Poultry Science. 98:3523-3532
The objective of the present study was to investigate the effect of dietary graded raw potato starch (RPS) levels on growth performance, plasma cytokines concentration, ileal barrier function, and cecal short-chain fatty acids (SCFA) concentration in
Publikováno v:
Poultry Science, Vol 100, Iss 11, Pp 101417-(2021)
Poultry Science
Poultry Science
This study was conducted to investigate the effect of stocking density on growth performance, feather quality, serum hormone, and intestinal development of geese from 1 to 14 d of age. A total of 450 one-day-old geese were randomly allotted to 45 bat