Czech Journal of Animal Science, 2024 (vol. 69), issue 7
The impact of parity, litter size and birth weight variations within a litter on piglet pre-weaning performanceReview
Nqobile Lungile Buthelezi, Bohani Mtileni, Khathutshelo Agree Nephawe, Peter Ayodeji Idowu, Mamokoma Catherine Modiba, Hezekiel Mpedi, Takalani Judas Mpofu
Czech J. Anim. Sci., 2024, 69(7):255-268 | DOI: 10.17221/36/2024-CJAS 
Sows are selected for their prolificacy. Therefore, assessing difficulties that can be associated with large litters is crucial. This review aims to highlight the factors that can affect reproductive performance such as breed, parity, litter size, environment, and nutrition. Understanding these factors can help producers make informed decisions about sow management and other aspects. Higher within-litter variation is the result of a high number of piglets born. It has been determined that large litter sizes pose a risk to animal welfare in the pig industry. Moreover, large litters bring more piglets with low birth weight leading to high pre-weaning...
Commonly used genomic estimators of individual inbreeding in livestockReview
Adrián Halvoník, Nina Moravčíková, Monika Chalupková, Radovan Kasarda
Czech J. Anim. Sci., 2024, 69(7):269-279 | DOI: 10.17221/91/2024-CJAS
Abstract: Management of inbreeding is one of the crucial parts of breeding programs in livestock populations. Traditionally, the inbreeding coefficient is calculated using pedigree data; however, it can also be estimated from genomic data. Nowadays, various approaches to estimating genomic-based inbreeding coefficients are increasingly integrated into research and breeding practices. These genomic estimators can supplement or replace pedigree-based coefficients. Each genomic-based inbreeding coefficient has its own properties and different ranges of values, and some of them need specific settings for calculation. Moreover, depending on the methodological...
How the milk chemical composition and fatty acid profile are influenced by physiological factorsin Najdi dairy sheepOriginal Paper
Abdulkareem Mohammed Matar, Faisal Ahmed Alshamiry, Ramzi Ahmed Amran, Riyadh Salah Aljumaah, Muneeb Musthafa, Massimo Todaro
Czech J. Anim. Sci., 2024, 69(7):280-291 | DOI: 10.17221/37/2024-CJAS
Sheep milk production is a complex process that is influenced by various factors. This study aims to investigate how the litter size (single vs. twins), birth type (male vs. female), age of the ewes and body weight affect the milk composition and fatty acid profile of milk fat. Milk samples were collected from 119 Najdi ewes that were the subject of this study. Gas chromatography-mass spectrometry (GC-MASS) was used to quantify the fatty acids (FAs). The results showed that the twins birth type (female/female) has a significant influence (P < 0.05) on the concentration of linoleic acid (LA), alpha-linolenic acid (ALA), behenic...
Effect of tannin degradation of mangrove (Sonneratia alba) fruit on nutrient digestibility, protozoa population and methane gas productionOriginal Paper
Elihasridas Elihasridas, Roni Pazla, Novirman Jamarun, Gusri Yanti, Sharli Asmairicen, Leni Marlina, Maureen Chrisye Hadriatry, Ratna Wylis Arief, Hadriana Bansi, Shahid Ullah Khan, Faheem Ahmed Khan, Ezi Masdia Putri, Antonius Antonius, Zaitul Ikhlas, Zahlul Ikhsan, Laily Rinda Ardani, Anggela Titania Siva, Hileri Yendrita, Fezi Zelinea
Czech J. Anim. Sci., 2024, 69(7):292-301 | DOI: 10.17221/38/2024-CJAS
This study examined the fermentation duration in relation to the effectiveness of tannin levels in mangrove (Sonneratia alba) fruit during the fermentation process using Aspergillus niger. The tested durations were 7, 10, 13, and 16 days in anaerobic conditions. The outcomes measured included crude fat, crude fibre, and nitrogen-free extract digestibility. Microbial biomass, protozoa population, and methane gas production were also recorded as responses to the rumen microbial activity. The results showed that 16 days of fermentation gave the highest average for all responses. The protozoa population reached around 4.07 × 105 cells/ml...
Corrigendum: A decision support system based on disease scoring enables dairy farmers to proactively improve herd healthCorrigendum
Saro Jan
Czech J. Anim. Sci., 2024, 69(7):302 | DOI: 10.17221/111/2024-CJAS