Template-Type: ReDIF-Article 1.0 Author-Name: Jansller Luiz Genova Author-Workplace-Name: Animal Science Department, State University of Western Paraná, Marechal Cândido Rondon, Brazil Author-Name: Antonio Diego Brandao Melo Author-Workplace-Name: Animal Science Department, Pontifical Catholic University of Paraná, Curitiba, Brazil Author-Name: Paulo Evaristo Rupolo Author-Workplace-Name: Animal Science Department, State University of Western Paraná, Marechal Cândido Rondon, Brazil Author-Name: Silvana Teixeira Carvalho Author-Workplace-Name: Animal Science Department, State University of Western Paraná, Marechal Cândido Rondon, Brazil Author-Name: Leandro Batista Costa Author-Workplace-Name: Animal Science Department, Pontifical Catholic University of Paraná, Curitiba, Brazil Author-Name: Paulo Levi de Oliveira Carvalho Author-Workplace-Name: Animal Science Department, State University of Western Paraná, Marechal Cândido Rondon, Brazil Title: A summary of feed additives, intestinal health and intestinal alkaline phosphatase in piglet nutrition Abstract: Weaning is considered the "critical window" in the piglet's life because it is associated with several stress factors, such as loss of contact with the mother and original litter, solid diet, environmental and structural changes, and the establishment of a new hierarchy. During this abrupt period, several events such as reduced feed intake, high morbidity, susceptibility to enteric infections and post-weaning diarrhoea are observed. The nutritional landscape of the piglet gut is modified, which can compromise the maturity of the gastrointestinal system, the stable intestinal microbiome and the active immunity developed as an indicator of intestinal health. However, with increased awareness of feed safety issues and the development of drug-resistant bacteria, the interest in producing pigs without the use of antimicrobial growth promoters (AGP) is increasing, since long-term use and therapeutic doses of AGP can contribute to the reduction of bacterial diversity and increase of inflammatory bowel disease (IBD). Thus, the most widely researched alternatives include the use of feed additives, feeding strategies, nutraceuticals/functional foods and available handling that can reduce the risk of IBD beyond basic nutritional functions. Studies have reported intestinal alkaline phosphatase as a new nutritional therapy associated with intestinal health which may be a "key additive" in the AGP replacement. In this review article, the purpose is to show some current aspects of feed additive research, addressing a concept of the "intestinal health" from different points of view and properties of alkaline phosphatase. Keywords: alkaline phosphatase, gastrointestinal health, intestinal microbiota, immune system, weanling piglet Journal: Czech Journal of Animal Science Pages: 281-294 Volume: 65 Issue: 8 Year: 2020 DOI: 10.17221/70/2020-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/70/2020-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-202008-0001.txt Handle: RePEc:caa:jnlcjs:v:65:y:2020:i:8:id:70-2020-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: Tibor Zubor Author-Workplace-Name: Embryo Center, Kaposvár University, Kaposvár, Hungary Author-Name: Gabriella Holló Author-Workplace-Name: Department of Animal Husbandry and Management, Institute of Animal Science, Faculty of Agricultural and Enviromental Sciences, Kaposvár University, Kaposvár, Hungary Author-Name: Roland Pósa Author-Workplace-Name: Department of Physiology and Aminal Hygiene, Insitute of Physiology, Biochemistry and Animal Hygiene, Faculty of Agricultural and Enviromental Sciences, Kaposvár University Kaposvár, Hungary Author-Name: Henrietta Nagy-Kiszlinger Author-Workplace-Name: Department of Animal Husbandry and Management, Institute of Animal Science, Faculty of Agricultural and Enviromental Sciences, Kaposvár University, Kaposvár, Hungary Author-Name: Zsófia Vigh Author-Workplace-Name: Embryo Center, Kaposvár University, Kaposvár, Hungary Author-Name: Balázs Húth Author-Workplace-Name: Department of Animal Husbandry and Management, Institute of Animal Science, Faculty of Agricultural and Enviromental Sciences, Kaposvár University, Kaposvár, Hungary Title: Effect of rectal temperature on efficiency of artificial insemination and embryo transfer technique in dairy cattle during hot season Abstract: This study aimed to evaluate the effects of rectal temperature (RT) as well as artificial insemination (AI) technique on pregnancy rates in Holstein cows and artificial insemination or embryo transfer (ET) techniques in Holstein heifers during summer. The experiments were conducted on five dairy farms in Hungary, where 1 631 data were examined. The RT was measured immediately before reproductive techniques using a digital thermometer. The effects of animal group and month on RT were analysed. The enhancement of RT until September can be seen in heifers, but the highest RT of cows occurred during July. In line with the enhancement of RT the pregnancy rate decreased in all groups; the lowest (cows) and the highest (heifers) value was observed in July. Moderate to high negative coefficients of correlation were detected between rectal temperature and pregnancy rate for particular groups (r = -0.3 - -0.7). More than 92% of ET, 48% and 16% of inseminated heifers and cows were pregnant up to the category of 39.1 °C of RT, above this it did not change considerably in the inseminated groups. In inseminated animals with RT higher than 39.1 °C significantly higher services per conception could be observed contrary to ET heifers. ET may become a more effective strategy to improve pregnancy success in heifers compared to AI during summer. Keywords: Holstein, summer period, heat stress, pregnancy rate Journal: Czech Journal of Animal Science Pages: 295-302 Volume: 65 Issue: 8 Year: 2020 DOI: 10.17221/14/2020-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/14/2020-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-202008-0002.txt Handle: RePEc:caa:jnlcjs:v:65:y:2020:i:8:id:14-2020-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: Jinling Hua Author-Workplace-Name: College of Animal Science, Anhui Science and Technology University, Fengyang, Anhui, P.R. China Author-Workplace-Name: College of Animal Science, Zhejiang University, Hangzhou, Zhejiang, P.R. China Author-Name: Tianfeng Xu Author-Workplace-Name: College of Animal Science, Anhui Science and Technology University, Fengyang, Anhui, P.R. China Author-Name: Quanwen Shen Author-Workplace-Name: College of Animal Science, Anhui Science and Technology University, Fengyang, Anhui, P.R. China Author-Name: Yan Liu Author-Workplace-Name: College of Animal Science, Anhui Science and Technology University, Fengyang, Anhui, P.R. China Author-Name: Guijuan Huang Author-Workplace-Name: College of Animal Science, Anhui Science and Technology University, Fengyang, Anhui, P.R. China Author-Name: Dejian Rao Author-Workplace-Name: College of Animal Science, Anhui Science and Technology University, Fengyang, Anhui, P.R. China Author-Name: Chunming Song Author-Workplace-Name: College of Animal Science, Anhui Science and Technology University, Fengyang, Anhui, P.R. China Author-Name: Jiakun Wang Author-Workplace-Name: College of Animal Science, Zhejiang University, Hangzhou, Zhejiang, P.R. China Title: Productive and metabolic increments of the inclusion of Broussonetia papyrifera to replace maize silage in growing goats Abstract: The study was conducted to investigate the effects of Broussonetia papyrifera (BP) on growth performance, rumen fermentation, digestion and meat quality in Huanghuai white goats. Diets were developed with increasing doses of BP to replace maize silage [0% (control), 15% (BP15), 30% (BP30) and 45% (BP45)]. The design was completely randomized with 4 groups of 10 animals each, totalizing 40 animals (aged 150 ± 10 days and body weight of 25.32 ± 0.52 kg). Final body weight, average daily gain and average daily feed intake increased (linear and quadratic, P < 0.05) as BP increased in the diet. The highest body weight and average daily gain were seen in the BP30 group. Feed conversion ratio also improved significantly (linear and quadratic, P < 0.05) with the increasing level of BP. Although the concentration of microbial protein (MCP) in a linear (P = 0.0028) and quadratic (P = 0.0035) fashion with increasing level of BP, however, NH3-N in a quadratic (P = 0.0841) fashion with increasing level of BP. Crude protein was increased with increasing BP in the diets (linear and quadratic, P < 0.05). Nitrogen intake, urinary excretion nitrogen and nitrogen retention were significantly improved (linear and quadratic, P < 0.05) with dietary BP addition in goats. Dietary BP supplementation increased pH (linear and quadratic, P < 0.05) and tended to reduce L* (lightness) (linear and quadratic, P < 0.05). Additionally, the redness value of meat was significantly improved by BP addition (linear and quadratic, P < 0.05). The inclusion of BP in the goat diet promotes growth and increases the digestibility of crude protein in addition to improving the meat colour and rumen fermentation. Keywords: goat, nutrient digestibility, meat quality, fermentation, pH Journal: Czech Journal of Animal Science Pages: 303-310 Volume: 65 Issue: 8 Year: 2020 DOI: 10.17221/10/2020-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/10/2020-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-202008-0003.txt Handle: RePEc:caa:jnlcjs:v:65:y:2020:i:8:id:10-2020-CJAS Template-Type: ReDIF-Article 1.0 Author-Name: Ivana Timová Author-Workplace-Name: Department of Animal Husbandry, Animal Nutrition and Biochemistry, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Czech Republic Author-Name: Eva Straková Author-Workplace-Name: Department of Animal Husbandry, Animal Nutrition and Biochemistry, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Czech Republic Author-Name: Lucie Všetičková Author-Name: Pavel Suchý Author-Workplace-Name: Department of Animal Husbandry, Animal Nutrition and Biochemistry, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Czech Republic Title: Impact of feeding mixture containing lupin meal on improvement of polyunsaturated fatty acids in egg yolk Abstract: The aim of the experiment was to determine how the content of lupin meal in the diet for commercial laying hens would affect the quality of fat in the egg yolk. A total of 210 Isa Brown laying hens was divided into three groups: the control group C (fed a mixture containing only soybean meal as a source of protein) and two experimental groups: EN 50% (fed a mixture containing 50% of soybean meal and 50% of white lupin seed meal, Zulika variety) and EN 100% (fed a mixture containing only white lupin seed meal as a source of protein). The results of the experiment using lupin seed meal in the feed mixture as a 50% and 100% replacement of extracted soybean meal confirmed the positive effect of lupin-based diets on egg yolk fat composition. Although the diets did not affect the fat content of the egg yolk, some other changes in the quality of the egg yolk were demonstrated during laying. These changes in egg yolk fat were characterized by a decrease (P ≤ 0.05) of saturated fatty acids (SFA), an increase (P ≤ 0.05) of monounsaturated fatty acids (MUFA), but only in some of them (C17:1 - heptadecenoic acid; C20:1n9 - eicosenoic acid and C22:1n9 - erucic acid) and, what is important, by a significant (P ≤ 0.05) increase of polyunsaturated fatty acids (PUFA) from the n-6 group (C18:2n6 - linoleic acid and C20:2n-6 - eicosadienoic acid) and n-3 group (C18:3n3 - α-linolenic acid; C20:5n3 - eicosapentaenoid acid and C22:5n3 - docosapentaenoic acid). From these results it is evident that using lupin meal in the feed mixtures for commercial laying hens increases the nutritional value and health benefit of the egg through the improvement of the levels of saturated and unsaturated fatty acids. Keywords: fat content, health benefit, layers, Lupinus albus, omega-3, omega-6 Journal: Czech Journal of Animal Science Pages: 311-321 Volume: 65 Issue: 8 Year: 2020 DOI: 10.17221/87/2020-CJAS File-URL: http://cjas.agriculturejournals.cz/doi/10.17221/87/2020-CJAS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/cjs-202008-0004.txt Handle: RePEc:caa:jnlcjs:v:65:y:2020:i:8:id:87-2020-CJAS