Abstract This study investigated the effects of dietary supplementation with chestnut tannins (CNT) on metabolic and antioxidant status prepartum cows along their colostrum quality. Pregnant multiparous Holstein were paired according to parity body condition score, assigned either a diet supplemented 20 g/d commercially available product containing (CNT, n=20) or an unsupplemented control (CON,...

Abstract Transportation of unweaned calves involves periods feed restriction and stress without a fully developed immune system gastrointestinal tract. The use additives to enhance intake immunity at arrival could be strategy minimize those negative effects. Holstein male (n + 39; 16 ± 1.2 d age 46 0.1 kg BW) were used evaluate the effect mixture (FA) comprising palatability enhancers, standard...

To determine the effects of dry period (DP) length on milk yield, milk composition, some blood metabolites, complete blood count (CBC), body weight and score and follicular status, twenty five primiparous and multiparous Holstein cows were assigned to a completely randomized design with DP-60 (n = 13) and DP-20 (n = 12) dry period lengths. Cows in the DP-60 produced more milk, protein, SNF, ser...

This study was carried out to evaluate the effects of feeding ensiled mixed tomato and apple pomace (EMTAP) on blood metabolites and chewing behavior of dairy cow. Six multiparous Holstein dairy cows in mid lactation were used in 3×3 Latin square design and fed alfalfa hay plus concentrate mixture with three levels replacement with EMTAP (0, 15, 30%) during 63 days. Results showed that, differe...

Left displaced abomasum (LDA) is a severe metabolic disease of cattle with a strong negative impact on production efficiency of dairy farms. Metabolic and inflammatory alterations associated with this disease have been reported in earlier studies, conducted mostly in large dairy farms. This research aimed to: (1) evaluate metabolic and inflammatory responses in dairy cows affected by LDA in sma...

Thirty neonatal male Holstein calves fed by starter diets containing ground wheat (GW) or dry-rolled wheat (DRW) to 12 weeks of age. Skeletal growth measures, starter digestibility, starter intake, blood metabolites and rumen metabolites of nursing calves were assessed in weeks 4, 8 and 12 to assess rumen development and find the optimum method of wheat processing for calves. Calves were weaned...

Four lactating cows equipped with rumen and duodenal cannulas were fed a diet of grass silage and concentrates containing either 12.4 or 17.2% CP (DM basis) in a change-over design. Additional protein was supplied as white fish meal. Fish meal did not affect molar proportions of VFA in the rumen, but duodenal NAN supply was increased .69 g/g of N in supplementary feed. In Experiment 2, three la...

The objective was to determine the effects of ground wheat grain (GW) inclusion rate, grinding extent (GE), and their interaction on lactating cow performance. Eight midlactation cows in 3 × 4 m individual boxes were used in a 4 × 4 replicated Latin square design study with 4 21 d periods. GW was fed at either 10% or 20% of diet dry matter (DM), as either finer or coarser particles. DM intake i...

Pea (Pisum sativum L.), a protein-rich legume seed well adapted to many climatic areas and widely used for feed and food, was fed to Italian Friesian breed cows for 16 weeks to assess its effects on milk yield and production, renneting properties and metabolic responses. Cows within each group were assigned to two isonitrogenous and isoenergetic concentrates based on corn plus soybean meal or p...