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Introduction Coccidiosis is an infectious disease of the intestinal tract of wild and domestic animals caused by different protozoa. These include but are not limited to Isospora, Neospora, Cryptosporidium, and Eimeria of the phylum Apicomplexa. Those parasites are widespread, especially where intensive production systems are used to raise livestock. They cause mortality, poor growth, and impaired performance. In addition to mortality and reduced growth, coccidiosis also affects...
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Introduction Decisions concerning the milking center are some of the most complicated decisions a dairy producer has to make. Milking procedures, herd size, expansion plans, milking interval and the equity position of a producer influence these decisions. One parlor will not meet the needs of all dairy producers. Producers will have to make the following decisions before they can select or develop management protocols for a milking parlor: 1. How many cows will be milked...
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Introduction A wide range of in vitro and in situ techniques are used as alternatives to in vivo measurement of ruminal fiber availability. Fiber digestibility and forage fragility are critical factors should to be considered in forage evaluation and diet formulation for ruminants. Digestive characters of dietary neutral detergent fibers (NDF) fraction have been reported to greatly affect feeding behavior, chewing activity, rate of particles...
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Real Science Exchange: NRC Series: Feed Intake & Carbohydrates
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The development of solutions and products focused on ruminant nutrition has been linked to LIPTOSA since its...
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Evonik's animal feed solutions based on low-protein, amino acid enriched diets make animal husbandry more efficient and help save resources. With a growing global population and rising affluence in many regions, the appetite for meat is picking...
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Redox status as a promising new way to explore live yeast metabolism in the rumen
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Introduction The challenge of the contemporary production of agricultural products is intrinsically linked to optimizing processes and production costs. Ensuring thermal comfort, considering that the intense incidence of solar radiation and the high temperatures observed practically throughout the year in the Brazilian semiarid region can cause stress, causing the animals to decline in production, can increase animal production (Leitão et al., 2013). Therefore,...
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Dr. Markus Wiltafsky-Martin, Responsible for Service Commercialization at Evonik Animal Nutrition, underscores why AMINODat® 6.0, is the most comprehensive animal nutrition database in the world that comprises nutritional data of more than 18,000 feed ingredient samples from all over the world and over 900,000 analytical results. ...
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U.S. dairy and livestock trends point to a decline in methane emissions. While the greenhouse gas has been used by climate change activists to clobber animal agriculture, science points to a different trend.
Methane as a greenhouse gas has long been the Achilles’ heel for activists to attack animal agriculture. That appears to be shifting as scientific discovery suggests a reduction in atmospheric methane over the United States.
Frank Mitloehner, a professor and air...
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AMINONIR® Portable enables the reliable determination of energy, nutrients in feed raw materials and feed, as well as amino acids in feed raw materials, on-site and independent of a laboratory. The hand-held device connects with the user’s tablet or cell phone. It only requires mobile signal reception and a handful of feed or raw material without further sample preparation to determine their quality at almost any location within minutes....
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In a previous article published some years ago here, dealing with cooling project that I accompanied in northern Mexico, I described the results from the first and second years of its implementation. The data were presented in a limited way, for a series of dairy farms belonging to the "Alpura" dairy cooperative, located in the warm regions of northern Mexico and characterized by long summer months, with extreme heat load conditions for dairy cows. These farms are mainly large and...
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Real Science Exchange: NRC Series: Feed Intake & Carbohydrates
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1. Introduction Goat production in Chile is carried out by poor small-scale farmers in semi-arid to arid agricultural conditions [1]. Milk and cheese are the main products obtained using artisanal, cultural and traditionally preserved methods where women and children are usually in charge of production [2]. The products are directly consumed by the family or sold to by-passers at good prices [3]. These production systems are similar in goat production around the world,...
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An increase in the velocity of air, at a temperature lower than the surface temperature of the animal, has the potential to increase the sensible heat loss of the animal. An augmentation in air velocity will shift the upper critical temperature upwards. An effective ventilation system to reduce heat stress should emphasize the production of high air speed as much as the commonly accepted goal of reducing ambient temperature. Increasing the air velocity lowers the effective temperature...
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Redox status as a promising new way to explore live yeast metabolism in the rumen
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INTRODUCTION Raising healthy calves is the foundation for a sustainable and profitable dairy herd. Dam nutrition during the last trimester, calving supervision/assistance, maternity facilities hygiene, umbilical care of calves, colostrum management, and calf nutrition are important factors that impact calf development and health (Lorenz et al., 2011). Calf mortality of 5% or less has been suggested as target for calfrearing operations (Lanuza, 2006). In Chile, however, there is...
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INTRODUCTION Grazed pasture soils are a potential source of nitrous oxide (N 2 O) due to elevated inorganic N pools. N 2 O is the dominant source of microbial denitrification, and under suitable conditions, N 2 O may be reduced in the soil to the environmentally harmless di-nitrogen gas (N 2 ). One of the key nitrogen (N) sources is urine deposited from grazing animals. The loading rate of N in a cow urine patch is determined by the dietary N...
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Objective The aim of this work was to compare the parameters of an in vitro embryo production program of cows of different breeds in Paraguay. Materials and methods A total of 4811 OPU sessions were performed between 2016 and 2019 in cows classified according to their breed. Beeftype breeds: Nelore (Bos indicus): n = 1569; Aberdeen Angus (Bos taurus): n = 1276; and Brangus (Cross): n = 182 OPU, and Gyr (Bos indicus):...
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Over the past two decades research in milking management has focused on decreasing the time that units are attached to cows by researching optimal teat stimulation and prep-lag time, pulsation ratios and liner compression and raising automatic take-off settings.
Optimal teat stimulation and prep lag time
Prep Lag time is the time from the start of teat stimulation, to milking unit attachment.
Nearly 50 years ago (1980) Ram Sagi achieved, a higher milk...
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Introduction Genetic variability of livestock populations is fading. This is due, in part, to genetic improvement programs (FAO, 1998; Gutiérrez and Goyache, 2005). Boichard et al. (1997) mentioned that change in genetic variability across generations could be described by genealogical characterization; and the conservation and consanguinity status of populations can be monitored (Vicente et al., 2012; Pienaar et al., 2015). Genealogical analysis requires the creation and...
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