Reduction of the occurrence of incorrect stunning and the occurrence of reflexes and reactions in cattle after pneumatically powered captive ‐bolt stunning in comparison with cartridge‐fired captive‐bolt stunning
In this study, the occurrence of repeat stunning, deviations in placement and direction of stun shots, and the occurrence of reflexes/reactions following stunning with a pneumatically powered captive-bolt stunner in comparison with a cartridge-fired captive-bolt stunner in cattle were assessed. Repeat stunning and deviations in placement and direction of the stun shots were less frequent (p < 0.01) with the use of a pneumatic stunner in all cattle. The rate of repeat stunning and deviation from the ideal place and direction of stun shots were lower (5.81%, 24.75%, and 9.60% of all animals, respectively) when a pneu...
Source: Animal Science Journal - April 26, 2022 Category: Zoology Authors: Michal Kaluza,
Vladimir Vecerek,
Eva Voslarova,
Josef Kamenik,
Jarmila Konvalinova,
Lenka Valkova,
Daniela Takacova Tags: RESEARCH ARTICLE Source Type: research
Relationship of parathyroid hormone ‐related protein and neonatal mineral metabolism in dairy cow placentas
This study clarified the relationship between PTHrP in the placenta of dairy cows and minerals in the fetal blood. Blood samples were obtained from 21 Holstein cows and 17 neonatal calves as well as 12 umbilical veins and arteries during cesarean section. After fetus removal, 13 caruncles and cotyledons were obtained. Concentrations of plasma PTHrP and serum minerals were measured. Real-time polymerase chain reaction (RT-qPCR) analyzed the gene expression of PTHrP and CaSR in the placenta. As a result, serum Ca and inorganic phosphorus concentrations in the neonate, umbilical vein, and artery were significantly higher than...
Source: Animal Science Journal - April 26, 2022 Category: Zoology Authors: Kei Kazama,
Takuma Nishio,
Masaki Nagane,
Sachiko Arai,
Ken Onda Tags: RESEARCH ARTICLE Source Type: research
Effects of wood kraft pulp as a partial replacement for roughage on rumen fermentation and productivity in dairy cows
In this study, we evaluated the partial replacement of roughage with wood kraft pulp (KP) on rumen fermentation and productivity of dairy cows. Eighteen cows were divided into control and KP groups. The KP group started adaptation to KP 3 weeks before calving; after calving, they were fed a total mixed ration for 12 weeks, wherein 18% Timothy hay was replaced with KP. The dry matter intake, body weight, and milk yield and composition were similar in the control and KP groups. The average daily rumen pH was higher with KP feeding, and the average daily ruminal temperature remained lower at 16 days after calving (P &...
Source: Animal Science Journal - April 26, 2022 Category: Zoology Authors: Hiroshi Yamamoto,
Yasuhiro Shimizu,
Toshiya Hasunuma,
Noriyoshi Manabe,
Ryo Osawa,
Kenji Kawashima,
Yoji Fukui,
Yutaka Ueno,
Kazuhiro Kurosu,
Hitoshi Mizuguchi,
Fuminori Terada,
Shigeru Sato,
Toshihisa Sugino,
Shiro Kushibiki Tags: RESEARCH ARTICLE Source Type: research
Reduction of the occurrence of incorrect stunning and the occurrence of reflexes and reactions in cattle after pneumatically powered captive ‐bolt stunning in comparison with cartridge‐fired captive‐bolt stunning
In this study, the occurrence of repeat stunning, deviations in placement and direction of stun shots, and the occurrence of reflexes/reactions following stunning with a pneumatically powered captive-bolt stunner in comparison with a cartridge-fired captive-bolt stunner in cattle were assessed. Repeat stunning and deviations in placement and direction of the stun shots were less frequent (p < 0.01) with the use of a pneumatic stunner in all cattle. The rate of repeat stunning and deviation from the ideal place and direction of stun shots were lower (5.81%, 24.75%, and 9.60% of all animals, respectively) when a pneu...
Source: Animal Science Journal - April 26, 2022 Category: Zoology Authors: Michal Kaluza,
Vladimir Vecerek,
Eva Voslarova,
Josef Kamenik,
Jarmila Konvalinova,
Lenka Valkova,
Daniela Takacova Tags: RESEARCH ARTICLE Source Type: research
Interactions between color and intensity of LED light on growth performance, serum biochemical profile, immune response variable, and nutrient apparent utilization in broiler chicken
This study investigated the effects of light-emitting diode (LED) color and intensity of broilers. One-day-old Cobb-500 broilers (n = 648) were fed nine groups with six replicates; three light colors (white, blue,& green) and intensities (for 1 to 7 days, viz., 20, 40, and 60 lx; for 8 to 42 days, viz., 5, 10, and 15 lx) were applied. Test lasted for 42 days. Results indicated that compared with blue light, 60-lx white light for 1 to 7 days increased the average daily gain (ADG) and average daily feed intake (ADFI) of broilers (p < 0.01). In the 10-lx light groups, the levels of interleukin-2 (IL-2) ...
Source: Animal Science Journal - April 22, 2022 Category: Zoology Authors: Zichao Tan,
Jinling Sun,
Xiaodong Liu,
Jie Liu,
Shubai Wang Tags: RESEARCH ARTICLE Source Type: research
