The objective of this study was to determine the effect cooling upon calving in alleviating adverse effects heat stress Holstein lactating cows. Production performance, indicators metabolic status, immune response, and biomarkers oxidative were measured. Based on mature equivalent milk production, parity, date, 46 multiparous cows allotted groups equal sizes (n = 23); stressed (HS; BW 658 ± 28 kg [mean SD]; BCS 2.7 0.18; parity 3 0.12) cooled (CL; 668 23 kg; 2.8 0.14; 0.25). Cows housed...

The objective of this study was to determine the effect partial replacement whole milk with colostrum on growth performance and health status Holstein dairy calves. Neonatal heifer calves (n = 144; 2 d age; 39.3 ± 0.82 kg body weight, BW; mean SE) were assigned randomly 3 groups pasteurized at 0 (C0; kg/d + 5 milk), 350 g (C350; 0.350 4.650 or 700 (C700; 0.700 4.300 milk) for 14 d; there no refusals liquid feed. From 15 onward, fed milk, weaned 61, monitored until 81 life. Throughout study,...

Summary The effect of adding molasses (0, UM or 50 g/kg on DM basis, M) and two types inoculant including homofermentative (HO) a combination propionate‐producing bacterial (HOPAB) inoculants silage fermentation quality, nitrogen fractionation aerobic stability pre‐bloom, wilted alfalfa (AS) was determined in laboratory silos. HOPAB more effective than HO reducing the pH but increased propionate content absence M (p < 0.05). Inoculation reduced 0.01) acid detergent fibre (ADF) lactate to...

This study was performed to determine the early-life (first month of age) supplementation liquid feed with fennel seed powder (FSP) or oregano leaf (OLP) on growth performance, health, and blood biochemical attributes in preweaning dairy calves. Holstein female calves (n = 57; 1 d age; 34.1 ± 0.97 kg BW; mean SE) were assigned randomly receive (colostrum milk) no added herbal plants (CON) supplemented FSP (3 g/d) OLP (30 during first age. The received pooled colostrum (4.5 kg/d 2 life; total...

We investigated the effect of Cr supplementation on growth performance, feeding behavior, health status, and blood metabolites summer-exposed dairy calves during pre- postweaning periods. A total 24 newborn Holstein female (1 d age; 42.1 ± 0.89 kg body weight) were assigned randomly to a control group (no supplement; Cr−) or (Cr+) receiving 0.05 mg Cr/kg weight0.75. During study period, average maximum temperature-humidity index was 81.3 units, indicating high environmental heat load....

Dairy calves may benefit from extending the duration of feeding transition milk (TM; subsequent two to six milkings after parturition) enhance performance and health during early life. The objective this study was assess effect replacing pasteurized waste (non-saleable containing antibiotic and/or drug residues) with TM for 3 weeks on growth dairy calves. A total 84 healthy newborn female Holstein were blocked by birth order assigned randomly 4 treatment groups partial replacement (second at...

The improved growth performance of calves at weaning results from an effective pre-weaning feeding strategy. type and pasteurization process liquid feed are among the most variable practices affecting calves' health. In previous studies that compared waste milk (WM) vs. replacer (MR), little consideration has been given to variations in chemical composition behavior between them, there a lack justification for crude protein: metabolizable energy (CP:ME) ratio adopted. Hence, this study aimed...

Effects of grain type and dietary oil supplement on production performance, energy balance, metabolic heat production, markers liver function heat-loaded lactating dairy cows were evaluated using 8 multiparous Holstein (77.0d in milk) a duplicated 4×4 Latin square design with 2×2 factorial arrangement treatments. Experimental diets contained either ground barley or corn supplemented fish soybean at 2% dry matter. Mean daily maximum temperature, minimum relative humidity, temperature-humidity...

Stressful situations may result in serum chromium (Cr) depletion with increased urinary excretion of the mineral and Cr requirements. The objective this study was to investigate effects supplementation on growth performance, feeding behavior, blood metabolites hormones, indicators oxidative stress glucose-insulin kinetics summer-exposed weaned dairy calves. In total, 48 Holstein female calves (63 days age; 77.0±1.45 kg BW) were assigned randomly one two treatments: (1) a control group no...

The addition of oil to ruminant diets and fatty acid profiles are major factors that negatively affect ruminal fermentation, while increased forage level attenuates the adverse effects. aim this study was determine effects source supplementation concentrate in diet on vitro fermentation kinetics. Pomegranate, garlic or sunflower oils were added (2 % dry matter (DM) basis) containing 40 60 (DM concentrates. In gas production parameters, pH, ammonia nitrogen concentration total protozoa count...

The objective of this study was to investigate the effects extruded full-fat soybean (ESB) as a replacement for meal (SBM) on nutrient intake, rumen fermentation, and growth performance dairy calves. A total 45 male Holstein calves (42.0±0.5 kg BW) were randomly assigned one three experimental diets: (1) 0% ESB (Control): 35.3% SBM no ESB; (2) 25% ESB: 27.0% SBM+9.0% (3) 50% 19.0% SBM+19.0% ESB. All weaned day 56 age remained in until 70 age. During pre-weaning overall periods, substituting...

The objectives of this study were to investigate the effects chromium (Cr) supplementation on feed intake and meal pattern, weight gain skeletal growth, health metabolic criteria environmentally heat-loaded dairy calves during pre-weaning period. Forty-eight newborn female allotted randomly a control group (no Cr supplement; Cr−) or (Cr+) receiving 0.05 mg (as Cr-methionine)/kg BW0.75. was provided in liquid (colostrum milk) average maximum temperature–humidity index 83.7 U, indicating...

This experiment was conducted to determine the effect of increasing dietary doses fennel seed powder (FSP) on growth performance and health status in calves. Holstein calves (n = 48; 3 d age; 36.3 ± 1.06 kg BW; mean SE) were allocated randomly diets containing 0 (FSP0), 1.5 (FSP1.5), or g/d (FSP3) FSP milk (morning feeding; during first month) then starter feed (top-dressed; from 31 until weaning 71). The remained trial 81. Weight gain final BW greater FSP-supplemented compared with control...

Carbohydrate-rich diets may increase urinary excretion of chromium (Cr) and its requirements. This study was conducted to investigate the effect grain type (barley v. corn) Cr supplementation on feed intake, feeding behavior weight gain in dairy calves. Forty-eight neonatal Holstein female calves were assigned randomly four experimental a 2×2 factorial arrangement. Experimental either barley-based diet (BBD) or corn-based (CBD) supplemented with (+Cr) without (-Cr) as Cr-methionine (0.05...