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The productive longevity of sows in breeding herd systems has become a key evaluation metric due to its importance with respect to both profitability and animal welfare. In the current economic climate, associated with rising costs of feed, a sow's productive life plays one of the most important roles in determining the profitability of the system. Therefore, it is essential to understand the factors that influence sow removal from a herd.

It was suggested that the start codon targeted (SCoT) markers may be more effective than inter-simple sequence repeat (ISSR) for differentiating and identifying the genetic variations within investigated breeds. Also, the usage of molecular markers of SCoT and ISSR may be more proper for calculating genetic diversity and common ancestry among tested rabbit breeds.

Tail tip inflammation is a well-known animal health and welfare problem in beef cattle, but data on tail tip necrosis in dairy cows are scarce. We examined the tail tips of 641 cows from five different herds to assess whether lesions occur in dairy cows, what type of lesions occur, and how common they are. We found different types of lesions and classified them into seven groups. Tail tip lesions were very common, suggesting that tail lesions in dairy cows require further investigation.

We compared the quality of beef in three muscles obtained from the carcasses of bulls of a local breed of Polish Red cattle and of typical Limousin beef originating from France and Poland. All animals were maintained by an extensive production system using year-round pasture and, additionally, bale grazing in winter season feeding. The beef of the local breed, with distinct attributes like a higher essential fatty acid content, proves to be suitable for producing high-nutritional-value beef.

A total of 1000 Ross-308 broilers were evenly divided into four groups. One group served as a control and was fed a basal diet, while three experimental groups were given diets with soybean replacement at 10%, 20% and 30%. The results indicated that there were no significant differences in growth performance, nutrient digestibility, hematology, serum metabolites and organoleptic characteristics. Consequently, it can be concluded that maggot meal can be included in the broiler diet up to 30%.

Genetics of horn traits in sheep are still under investigation. Icelandic sheep were chosen to further characterize this complex trait using known variants as it is highly variable for horn characteristics. Only the published variant for multi-hornedness was in perfect segregation. The absence of horns was analyzed in multi-horned sheep. Only tendencies of association were found for hornlessness and for different horn shapes and sizes, confirming previous results in other breeds.

This study examines the crossbreeding of Indonesian local rabbits with imported breeds, highlighting the heterosis effects. Crossbred rabbits, especially Rex descendants, show notable growth benefits. Based on the results, we advocate for strategic crossbreeding to enhance rabbit growth and offer insights into sustainable rabbit production.

The aim of this study was to investigate the role of TP53 in buffalo lactation. The data showed that buffalo TP53 inhibited the expression of genes related to milk protein and milk fat in buffalo mammary epithelial cells by inhibiting the PI3K–AKT–mTOR pathway. These results suggest that TP53 negatively regulates the synthesis of milk protein and milk fat in buffalo through the PI3K–AKT–mTOR pathway. This study provides new insights into the functional role of TP53 in buffalo lactation.

It was detected that Texel and myostatin-carrying BC₁ lambs were significantly higher than Pırlak and non-carrying BC₁ lambs in the MLD area at weaning. Myostatin-carrying BC₁ lambs had a superiority to Pırlak lambs in terms of muscle conformation and fatness of the hind leg. Myostatin-carrying BC₁ lambs were found to be better than Pırlak in growth performance. It was concluded that the Pırlak lambs may be improved by introgression of myostatin mutation.