Czech Journal of Animal Science, 2021 (vol. 66), issue 6

Iodine concentration in milk and human nutrition: A reviewReview

Šimon Mikláš, Vladimír Tančin, Róbert Toman, Jan Trávníček

Czech J. Anim. Sci., 2021, 66(6):189-199 | DOI: 10.17221/167/2020-CJAS  

The aim of the review was to provide information about the importance of iodine in human nutrition and to review milk as an important source of iodine, and also to summarize the main factors affecting iodine concentration in milk. Iodine is an essential element for the thyroid gland function and synthesis of thyroid hormones, which regulate key processes of metabolism, brain development and growth. Therefore, it is important to ensure adequate, neither deficient nor excessive, intake of this element in animal nutrition, but more importantly in the nutrition of humans. Milk and dairy products are very valuable sources of iodine. However, its concentration...

Evaluation of genetic diversity of subdivided genealogical groups in Lithuanian Trakehner horse population using immunogenetic toolsOriginal Paper

Alma Račkauskaité, Ruta Šveistiené, Violeta Razmaité, Virginija Jatkauskiené

Czech J. Anim. Sci., 2021, 66(6):200-210 | DOI: 10.17221/118/2020-CJAS  

The objective of this study was to evaluate the inter-breed genetic diversity of Lithuanian Trakehner horses. The current population in Lithuania numbers 1 039 Trakehner horses. The study included the immunogenetic data analysis of 316 blood samples. Pedigree was traced back to 7-11 generations. The horses were assigned to genealogical clusters originating from East Prussian Trakehner Stud, Thoroughbred and Arab sires. The first two clusters were subdivided into nine-horse groups according to the most important ancestors. The evaluation of genetic diversity was based on six blood groups and five protein polymorphism systems. The differences between...

Estimation of genetic parameters for horn traits and essential economic traits in Inner Mongolia Cashmere goatsOriginal Paper

Lei Zhang, Fenghong Wang, Lingtian Zhang, Fengting Zhang, Hongfu Liu, Libing He, Jinquan Li, Rui Su

Czech J. Anim. Sci., 2021, 66(6):211-216 | DOI: 10.17221/212/2020-CJAS  

Horns are unique cranial appendages in ruminants, and horn traits are useful in the indirect selection of growth traits in goat. However, genetic parameters for horns have not been estimated in Inner Mongolia Cashmere goats. In this study, we collected pedigree information with 7 632 records from 2 049 Inner Mongolia Cashmere goats during 2017 to 2019 to study horn base interval (HBI), horn length (HL) and horn base circumference (HBC), as well as four essential economic traits including cashmere length (CL), staple length (SL), cashmere weight (CW) and live body weight (LBW). Genetic parameters and (co)variances were estimated by a multivariate animal...

Effect of fat levels in early phase on growth performance and meat characteristics in twin lambsOriginal Paper

Wenjuan Li, Hui Tao, Tao Ma, Naifeng Zhang, Kaidong Deng, Qiyu Diao

Czech J. Anim. Sci., 2021, 66(6):217-224 | DOI: 10.17221/177/2020-CJAS  

This experiment aims to study the effects of dietary fat level during the suckling period on growth performance and meat characteristics in twin lambs. Thirty pairs of male twin Hu lambs were divided into two groups, namely high fat (HF) and normal fat (NF). Lambs in the HF group were fed milk replacer and starter containing 26.89% and 5.07% of fat, whereas those in the NF group were fed milk replacer and starter containing 15.15% and 2.80% of fat, respectively, from eight to 60 days of age. From 60 to 120 days of age, all lambs were fed a starter feed containing 2.80% fat. The results showed that lambs fed HF diet had higher body weight (12.78...

Study on the influence of dietary sea buckthorn meal on nutritional properties of laying hen eggsOriginal Paper

Arabela Elena Untea, Tatiana Dumitra Panaite, Iulia Varzaru, Raluca Paula Turcu, Teodor Gavris, Alexandra Lupu

Czech J. Anim. Sci., 2021, 66(6):225-234 | DOI: 10.17221/239/2020-CJAS  

The study aimed to evaluate the transfer of bioactive compounds from sea buckthorn meal (SBM) supplement to eggs and the effect on lipid quality and peroxidation process. Thirty-two-week-old TETRA SL laying hens were allocated to two dietary treatments, 30 birds each (15 replicate pens). The control diet (C) contained a maize-soybean diet, and the experimental diet contained the previous C diet with 2% of maize replaced with SBM. Thirty-six eggs from each group were collected in order to determine the quality parameters at the end of the experiment. The antioxidant profile of SBM showed that the phytoadditive is a valuable source of vitamin E, xanthophylls...