Hasil untuk "Cattle"

J. Dubey, G. Schares, L. Ortega-Mora

R. Kaplan

Gaurendra Gupta, D.R. Palsaniya, Manjanagouda S. Sannagoudar et al.

Challenges of climate-resilient agricultural production, along with environmental sustainability, guided the study on livestock-based integrated farming systems (LIFS) to explore their merits and implications for sustainable farming. Consequently, a 3-year life cycle assessment of a 3-ha LIFS with 30 adult cattle units and diversified components (45 % food crops, 33.8 % fodder, 17.5 % vegetables, 2.5 % flowers, 1.3 % fruits, and allied activities) was conducted to evaluate among its components and against the traditional groundnut-wheat cropping system (GWCS). The study assessed ecosystem services, including resource recycling, productivity, profitability, employment, and energy-carbon dynamics involving the life cycle assessment approach. Findings reveal that LIFS yielded 80,178 kg wheat equivalent ha−1 yr−1, US$8952 net returns, 4,55,368 MJ energy output, and 33,974 kg carbon output from inputs of 90,791 MJ energy and GHG emissions equivalent to 14,942 kg carbon. Compared to GWCS, LIFS achieved 8.4× higher productions, 6.4× greater returns, 6.6× more employment, 3.0× higher energy productivity, and 4.6× greater net carbon gain due to crop–livestock synergy with improved management. Among components, livestock dominated inputs (86 % cost, 66 % energy, 92 % carbon) and outputs (77 % production, 66 % returns, 59 % employment), thus playing a crucial role in production and environmental sustainability. However, horticultural crops showed higher unit productivity and returns. The carbon footprint of LIFS (0.69 kg CO2 eq.) was higher than GWCS but better than similar livestock + crop systems. Conclusively, LIFS enhances climate resilience and ecosystem services; however, optimizing livestock's energy-carbon use can further impart greater environmental sustainability, offering valuable insights for researchers and policymakers to focus on immediate adoption of LIFS for stable livelihood, along with setting the long-term goal for sustaining the energy-carbon use to evolve a ‘total sustainability’ of production systems in study region as well as similar agroecology worldwide.

P. Piantoni, M.A. Abeyta, G.F. Schroeder et al.

ABSTRACT: Intestinal hyperpermeability and subsequent immune activation alters nutrient partitioning and thus, decreases productivity. Developing experimental models of intestinal barrier dysfunction in heathy cows is a prerequisite in identifying nutritional strategies to mitigate it. Six cannulated Holstein cows (mean ± standard deviation, 37 ± 10 kg/d milk yield; 219 ± 97 d in milk; 691 ± 70 kg body weight) were used in a replicated 3 × 3 Latin square design experiment with 21-d periods (16-d wash-out and 5-d challenge) to evaluate either feed restriction or hindgut acidosis as potential models for inducing intestinal hyperpermeability. Cows were randomly assigned to treatment sequence within square and treatment sequences were balanced for carryover effects. Treatments during the challenge were (1) control (CTR; ad libitum feeding); (2) feed restriction (FR; total mixed ration fed at 50% of ad libitum feed intake); and (3) resistant starch (RS; 500 g of resistant starch infused in abomasum once a day as a pulse-dose 30 min before morning feeding). The RS (ActiStar RT 75330, Cargill Inc.) was tapioca starch that was expected to be resistant to enzymatic digestion in the small intestine and highly fermentable in the hindgut. Blood samples were collected 4 h after feeding on d 13 and 14 of the wash-out periods (baseline data used as covariate), and on d 1, 3, and 5 of the challenge periods. Fecal samples were collected 4 and 8 h after the morning feeding on d 14 of the wash-out periods and d 5 of the challenge periods. By design, FR decreased dry matter intake (48%) relative to CTR and RS, and this resulted in marked reductions in milk and 3.5% FCM yields over time, with the most pronounced decrease occurring on d 5 of the challenge (34 and 27%, respectively). Further, FR increased somatic cell count by 115% on d 5 of the challenge relative to CTR and RS. Overall, FR increased nonesterified fatty acids (159 vs. 79 mEq/L) and decreased BHB (8.5 vs. 11.2 mg/dL), but did not change circulating glucose relative to CTR. However, RS had no effect on production or metabolism metrics. Resistant starch decreased fecal pH 8 h after the morning feeding (6.26 vs. 6.81) relative to CTR and FR. Further, RS increased circulating lipopolysaccharide binding protein (4.26 vs. 2.74 µg/mL) compared with FR only on d 1 of the challenge. Resistant starch also increased Hp (1.52 vs. 0.48 µg/mL) compared with CTR, but only on d 5 of the challenge. However, neither RS or FR affected concentrations of serum amyloid A, IL1β, or circulating endotoxin compared with CTR. The lack of consistent responses in inflammatory biomarkers suggests that FR and RS did not meaningfully affect intestinal barrier function. Thus, future research evaluating the effects of hindgut acidosis and FR using more intense insults and direct metrics of intestinal barrier function is warranted.

G. Lofgreen, W. Garrett

YAN RAMONA, NI LUH PUTU ARIWATHI

 In the last two decades the use of yeasts as new probiotics has increased significantly. Therefore, our current research was focused on the investigation of yeasts for novel probiotic development in Bali. The main objectives of this research were to isolate and characterize yeasts isolated from ragi tape (dried mix cultures of microorganisms normally used in the fermentation of rice or cassava in Indonesia) and tape ketan (fermented sticky rice) for possible use as yeast-based novel probiotics, with capability to assimilate cholesterol in vitro. In this study, the potential yeast isolates were evaluated for survival at low pH conditions (pH 2, 3, or 4) and in high levels of sodium deoxicholic (NaDC), at concentrations of 0.2, 0.4, or 0.6 mM. In addition, the yeast isolates were also evaluated for their ability to assimilate cholesterol in vitro and to elucidate biotransformation of cholic acid into deoxycholic acid. This study led to 10 isolates that were resistant to pH levels of 2, 3, or 4 and to NaDC at concentration of higher than 0.4 mM. Most of those isolates were also found to assimilate cholesterol in vitro at the rate of between 18% and 76% in 24 hours incubation. In the biotransformation test, none of those isolates transformed cholic acid into deoxycholic acid, indicating that they are safe and have potential to be developed into novel probiotics, either for human or cattle

Clara Inés Caro-Caro, Jaime Humberto Bernal-Riobo, Miguel Arango-Argoti et al.

Ecological assessment of soil ecosystem services was made through indicators of provision of nutrients, amount of organic matter, and cation exchange capacity; and climate regulation, carbon storage, in the Orotoy river basin. As units that provide ecosystem services, mosaics of tropical humid forest cover, oil palm crops and cattle pastures were selected, persistent for 20 years, in windows located in the upper, middle and lower areas of the basin. Soil samples (896) were collected and analyzed in the laboratory for determining physical and chemical properties. The data were processed with the SPAW and R software. Indicators, ranging from 0 to 1, and tradeoffs were represented on a 1: 25.000 scale land cover map. It was found that in the indicator of carbon storage, the low zone obtained the highest average value (0.42); and the indicator of the ecosystem service of nutrient provision obtained close average values in the middle and lower zones, 0.33 and 0.44, correspondingly. In vegetation cover, the tropical humid forest presented the highest average values for the indicator of climate regulation (0,43). The established trade-offs from the valuation are: the upper zone is fundamental for water regulation and climate regulation throughout the basin; forest cover in the entire basin regulates the climate, oil palm crops and cattle pastures via fertilization, contribute to the surrounding forests, located in areas of less slope. In the mosaics of the multifunctional landscapes it was found that although the ecosystem services are related to the forming factors of the soil and the vegetation coverage, the influence of cultural practices on the soils is also evident; these determine trade-offs. The importance of including the ecosystem services of the soil in the processes of territorial ordering and management of landscapes like the one of the basin of the Orotoy river is verified, which in the current management scenario presents trade-offs between zones and coverages.

Alexandra Novotná, Michaela Brzáková, Alena Birovaš et al.

The objective of the present study was to estimate the genetic parameters for the scrotal circumference of bulls of beef breeds in the Czech Republic. The used database for the years 1996-2020 comprised information on the scrotal circumference measurements from 22 065 bulls of 19 pure breeds and crossbred animals of the Beef Simmental, Charolais, and Hereford breeds. After adjustments, the database contained 16 404 records. To test the influence of systematic fixed effects, the GLM/SAS procedure using the least-squares method was applied. The contemporary group, weight and age of the bulls were included as significant systematic environmental effects (< 0.05). The genetic parameters were determined by a single-trait model using the AIREMLF90 program. The heritability coefficient of the scrotal circumference was 0.27. Environmental correlations of the scrotal circumference with the bull weight were moderate and positive (r = 0.2), but the correlations between the age in days and the scrotal circumference were almost zero (r = 0.03). The results indicate that the scrotal circumference of beef cattle breeds provides sufficiently high genetic variability that can be used to identify individuals with an above-average circumference and, in this way, increase the probability of selection of a young bull with a better reproduction potential.

Norbert Miskolczi, Szabina Tomasek

In this study, pyrolysis of municipal sewage sludge samples from different sources including cattle and chicken manure as well as brook mud, was investigated using a thermogravimetric analysis coupled with a Fourier transform infrared spectrometer (TG-FTIR) at different heating rates (25, 50 and 100 °C/min). In order to determine the kinetic parameters, Arrhenius, model-free Kissinger–Akira–Sunose (KAS), as well as Friedman and Flynn–Wall–Ozawa (FWO) methods were compared. The thermogravimetric results revealed that pyrolysis involved different stages, and that the main decomposition reactions took place in the range of 200–600 °C. In this range, decomposition of biodegradable components (e.g., lipids and polysaccharides), proteins and carbohydrates occurred; meanwhile, there were samples (e.g., cattle manure, brook mud) in which the decomposition step could be observed even at temperatures above 700 °C. According to the Arrhenius method, the activation energies of the first decomposition stage were between 25.6 and 85.4 kJ/mol, while the activation energies of the second and third stages were in the ranges of 11.4–36.3 kJ/mol and 20.2–135 kJ/mol, respectively. The activation energies were also calculated by the KAS, Friedman and FWO methods, which were in the range of 100–300 kJ/mol for municipal sewage sludge or distillery sludge, and ranged between 9.6 and 240 kJ/mol for cattle manure, chicken manure and brook mud samples.

Jessica O. Baggerman, Alex J. Thompson, Michael A. Jennings et al.

Two studies were conducted to evaluate the effect of encapsulated methionine on live performance, carcass characteristics, and skeletal muscle development in feedlot steers. In Experiment 1, 128 crossbred steers (body weight [BW] = 341 ± 36.7 kg) were used in a randomized complete block design and supplemented with 0, 4, 8, or 12 g/(head day [d]) of ruminally protected methionine (0MET, 4MET, 8MET, and 12MET, respectively) for 111 d or 139 d. In Exp. 2, 20 steers (BW = 457 ± 58 kg) were stratified by BW and randomly assigned to either the 0MET or 8MET treatment; longissimus muscle (LM) biopsies were collected on d 0, 14, 28, 42, and 56, and analyzed for mRNA and protein expression. Additionally, immunohistochemical analysis was performed to measure fiber type area and distribution as well as the density of muscle nuclei and satellite cells (Myf5, Pax7, and Myf5/Pax7). In Experiment 1, no significant differences were observed for live performance (<i>p</i> ≥ 0.09). There was, however, a linear relationship between LM area and methionine supplementation (<i>p</i> = 0.04), with a 9% increase in the area when steers were supplemented with 12MET compared to 0MET. In Exp. 2, There were no treatment × day interactions (<i>p</i> ≥ 0.10) for expression of mRNA or protein abundance. Although mRNA expression and protein abundance of all genes were influenced by day (<i>p</i> ≤ 0.04), methionine supplementation did not have a significant effect (<i>p</i> ≥ 0.08). There was a significant treatment × day interaction for distribution of MHC-I fibers (<i>p</i> = 0.03), where 8MET supplemented cattle had a greater proportion of MHC-I fibers after 56 d of supplementation than did 0MET steers. Cross-sectional area was increased over time regardless of fiber type (<i>p</i> < 0.01) but was unaffected by treatment (<i>p</i> ≥ 0.36). While nuclei density was not impacted by treatment (<i>p</i> = 0.55), the density of myonuclei increased nearly 55% in 8MET supplemented cattle (<i>p</i> = 0.05). The density of Myf5 positive satellite cells tended to decrease with methionine supplementation (<i>p</i> = 0.10), while the density of Pax7 expressing cells tended to increase (<i>p</i> = 0.09). These results indicate that encapsulated methionine supplementation may influence markers of skeletal muscle growth, and potential improvements in the LM area may exist.

J. Blackshaw, A. Blackshaw

Lukman Effendi, Deden Mauli Darajat, Sri Lestari

Meat needs, especially beef, are increasingly increasing, because human awareness of the importance of nutritional needs derived from animal meat. The high demand for beef needs has resulted in farmers and cattle traders trying to sell as many animals as possible. Farmers and cattle traders in Indonesia are still largely unprofessional. For the sake of getting a lot of profit, it was time to takeaction that harmed cattle and consumers. One such action is to sell “glonggongan” meat which is to increase the mass / weight of beef by giving excessive drinking water before the cow is cut. One way to overcome this action is to provide information to buyers through a net weight analysis system for normal beef and glonggings using an expert system with case-based reasoning. The research will be carried out starting from the collection of data from normal and glaucous cows by looking at the body  weight, gender, upper-lower cows circumference of the abdomen, side of the cow's overall body  circumference, height, leg height, head length, butt width, body length cow. In obtaining output with a 95% truth value, the base of the case stored in the database is at least 150 cases. All input variables will be analyzed and matched on a case basis using an expert system with CBR (case-based reasoning) method

I. Gordon

Rodolfo M Pelinson, Michel V Garey, Denise C Rossa-Feres

Because of their strong dependence on the environment, the spatial distribution of pond-breeding amphibians can be greatly influenced by anthropogenic habitat alteration. In some agricultural landscapes in Brazil, the anuran Pseudopaludicola mystacalis appears to be highly influenced by land use. Because adult males and tadpoles of this species are usually found in marshy areas with cattle hoof prints, we hypothesized that P. mystacalis preferentially occupies aquatic habitats with marshy areas that are trampled by cattle. To test our hypothesis, we assessed whether the occurrence of P. mystacalis is associated with the presence of cattle and trampled marshy areas, and which environmental features best explain the spatial distribution and abundance of P. mystacalis. To do so, we sampled 38 aquatic habitats in an area intensely used for livestock in southeastern Brazil. We found that the presence of cattle and trampled marshy areas in aquatic habitats are positively associated to P. mystacalis occurrence. Additionally, the abundance of calling males is better predicted by variables of landscape and local habitat structure. Specifically, the size of trampled marshy areas and the proportion of herbaceous vegetation within the aquatic habitat are positively associated with abundance, while distance to nearest aquatic habitat are negatively associated with abundance of calling males. All three of these variables can be directly or indirectly linked to the presence of cattle or grazing management. Therefore, this work shows evidence that Pseudopaludicola mystacalis is positively influenced by grazing management with cattle, and draws attention to other unknown potential consequences of different land use to fresh water diversity.

J. Polisar, I. Maxit, Daniel G. Scognamillo et al.

F. Tuyttens

A. De Vries

C. Phillips, Charles R. Foster, P. Morris et al.

H. Guan, K. Wittenberg, K. Ominski et al.

N. Jonsson