Pancreatic secretion differs according to the genotype of growing pigs.

The objective of this study was to investigate the secretion of pancreatic enzymes and antibacterial activity in weaned pigs of three pure breeds, Pietrain, Duroc and Polish synthetic line 990, to look for eventual differences related to the genotype. Six male pigs of each breed, about 24 kg mean body weight, were equipped with chronic pancreatic duct catheters and duodenal cannulas to assess pure pancreatic juice, and jugular vein catheters for blood withdrawal. Pancreatic juice was collected before and after the morning feeding.

Differential induction of transcription factors and expression of milk protein genes by prolactin and growth hormone in the mammary gland of rabbits.

Previously we demonstrated that administration of lactogenic hormones - prolactin (PRL) and growth hormone (GH) - to pregnant rabbits differentially induces expression of casein and whey proteins in the mammary gland. Now we extend these observations to transcription factors (TFs) that are responsive for differential induction of milk protein genes. Analysis of correlation between the number of putative TF binding sites in 5'-upstream sequences and the levels of induction of milk protein genes allowed preselection of the TFs involved.

In vivo effect of growth hormone on DNA synthesis and expression of milk protein genes in the rabbit mammary gland.

The aim of this work was to show whether growth hormone (GH) is able to directly induce growth and functional differentiation of the mammary gland. We have shown that i.m.

The apparent ileal and faecal digestibilities of amino acids and carbohydrates of rye, barley and triticum grains in pigs.

Six pigs of initial weight 40 +/- 1.7 kg with a T-piece cannula fitted at the terminal ileum were given diets composed of 96.3% of rye, barley or triticum grains ground to pass the 2.

Determining of nitrogen absorption and nitrogen secretion in different sections of the pig's intestine by digesta exchange between 15N labelled and unlabelled animals.

In an experiment with 3 pigs (initial live weight 30 kg, each fitted with 2 re-entrant fistulas in duodenum and ileum, one labelled with 15N), the duodenal and ileum digesta was exchanged. The N and 15N contents were estimated in faeces, urine, duodenal and ileum digesta of all experimental animals as well as in special organs and in the contents of different tract sections. The 15N excess (15N') of N compounds secreted into the gut lumen was determined using the 15N' in pancreas, gut mucosa and TCA-soluble blood serum.