Recently added articles from Journal of Dairy Science:
NEWS AND ANNOUNCEMENTS
Dec 01, 2009; Anonymous ... ADSA Member News ADSA member John C. Bruhn receives Award of Distinction from UC Davis John C. Bruhn, a dairy food processing specialist emeritus in the Department of Food Science and Technology, is an accomplished researcher and educator whose work has helped improve the quality ...
Invited review: Current state of genetic improvement in dairy sheep
Dec 01, 2009; Carta, A; Casu, Sara; Salaris, S ... ABSTRACT Dairy sheep have been farmed traditionally in the Mediterranean basin in southern Europe, central Europe, eastern Europe, and in Near East countries. Currently, dairy sheep farming systems vary from extensive to intensive according to the economic relevance of the production ...
Modeling of the effect of freezer conditions on the hardness of ice cream using response surface methodology
Dec 01, 2009; Inoue, K; Ochi, H; Habara, K; Taketsuka, M; Saito, H; Ichihashi, N; Iwatsuki, K ... ABSTRACT The effect of conventional continuous freezer parameters [mix flow (L/h), overrun (%), drawing temperature (°C), cylinder pressure (kPa), and dasher speed (rpm)] on the hardness of ice cream under varying measured temperatures (-5, -10, and -15°C) was investigated systematically ...
Interactions between globular proteins and procyanidins of different degrees of polymerization
Dec 01, 2009; Prigent, S V E; Voragen, A G J; van Koningsveld, G A; Baron, A; Renard, C M G C; Gruppen, H ... ABSTRACT Interactions of proteins with phenolic compounds occur in food products containing vegetable sources, such as cocoa, cereals, or yogurts containing fruit. Such interactions can modify protein digestion and protein industrial properties. Noncovalent interactions between globular ...
Invited review: Body condition score and its association with dairy cow productivity, health, and welfare
Dec 01, 2009; Roche, J R; Friggens, N C; Kay, J K; Fisher, M W; Stafford, K J; Berry, D P ... ABSTRACT The body condition score (BCS) of a dairy cow is an assessment of the proportion of body fat that it possesses, and it is recognized by animal scientists and producers as being an important factor in dairy cattle management. The scale used to measure BCS differs between ...
Microstructural changes in casein supramolecules during acidification of skim milk
Dec 01, 2009; McMahon, D J; Du, H; McManus, W R; Larsen, K M ... ABSTRACT Pasteurized skim milk was acidified using different levels of glucono-δ-lactone at 10, 20, 30, and 40°C to give slow, medium, and fast rates of acidification. Milk coagulation was monitored by measuring turbidity and curd firmness, and microstructural changes during ...
Invited review: The use of distillers products in dairy cattle diets
Dec 01, 2009; Schingoethe, D J; Kalscheur, K F; Hippen, A R; Garcia, A D ... ABSTRACT Distillers grains with solubles (DGS) is the major coproduct of ethanol production, usually made from corn, which is fed to dairy cattle. It is a good protein (crude protein, CP) source (>30% CP) high in ruminally undegradable protein (~55% of CP) and is a good energy source ...
A high-throughput cheese manufacturing model for effective cheese starter culture screening
Dec 01, 2009; Bachmann, H; Kruijswijk, Z; Molenaar, D; Kleerebezem, M; Vlieg, J E T van Hylckama ... ABSTRACT Cheese making is a process in which enzymatic coagulation of milk is followed by protein separation, carbohydrate removal, and an extended bacterial fermentation. The number of variables in this complex process that influence cheese quality is so large that the developments of ...
Comparison of two methods to explore consumer preferences for cottage cheese
Dec 01, 2009; Drake, S L; Lopetcharat, K; Drake, M A ... ABSTRACT In the past 2 decades, total sales of cottage cheese have declined 17% despite increases in sales for low-fat cottage cheese. There are no recent published studies investigating consumer preferences for cottage cheese. This study was conducted to identify and define sensory ...
Physicochemical, microbial, and sensory properties of yogurt supplemented with nanopowdered chitosan during storage
Dec 01, 2009; Seo, M H; Lee, S Y; Chang, Y H; Kwak, H S ... ABSTRACT This study was carried out to determine the possibility of adding nanopowdered chitosan (NPC) into cholesterol-reduced yogurt to improve the functionality of yogurt and the effects of adding NPC on the physicochemical, microbial, and sensory properties of the products during ...
Short communication: Detection of human Torque teno virus in the milk of water buffaloes (Bubalus bubalis)
Dec 01, 2009; Roperto, S; Paciello, O; Paolini, F; Pagnini, U; Palma, E; Palo, R Di; Russo, V; Roperto, F ... ABSTRACT Forty-four raw milk and 15 serum samples from 44 healthy water buffaloes reared in Caserta, southern Italy, the most important region in Europe for buffalo breeding, were examined to evaluate the presence of Torque teno viruses (TTV) using molecular tools. Furthermore, 8 pooled ...
The effect of bleaching agent on the flavor of liquid whey and whey protein concentrate
Dec 01, 2009; Croissant, A E; Kang, E J; Campbell, R E; Bastian, E; Drake, M A ... ABSTRACT The increasing use and demand for whey protein as an ingredient requires a bland-tasting, neutral-colored final product. The bleaching of colored Cheddar whey is necessary to achieve this goal. Currently, hydrogen peroxide (HP) and benzoyl peroxide (BPO) are utilized for ...
Short communication: Evaluation of supercritical fluid extraction aids for optimum extraction of nonpolar lipids from buttermilk powder
Dec 01, 2009; Spence, A J; Jimenez-Flores, R; Qian, M; Goddik, L ... ABSTRACT The milk fat globule membrane, present in buttermilk, contains complex lipids such as phospholipids. Microfiltration coupled with supercritical fluid extraction (SFE) may provide a method of enriching these nutritionally valuable lipids into a novel ingredient. Therefore, SFE as ...
Effects of milk replacer formulation on measures of mammary growth and composition in Holstein heifers
Dec 01, 2009; Daniels, K M; Capuco, A V; McGilliard, L; James, R E; Akers, R M ... ABSTRACT Overfeeding prepubertal heifers may impair mammary parenchymal growth and reduce milk production, but evidence suggests that increased intake of a high-protein milk replacer before weaning may be beneficial. This study was designed to evaluate effects of milk replacer (MR) ...
Meta-analysis of stray voltage on dairy cattle
Dec 01, 2009; Erdreich, L S; Alexander, D D; Wagner, M E; Reinemann, D ... ABSTRACT A quantitative assessment of dairy cow responses to contact current (stray voltage) at 50 or 60 Hz was conducted using meta-analysis and pooled analysis methodology. The objective was to more accurately quantify the minimum exposure level (threshold) at which dairy cows respond ...
A novel method of analyzing daily milk production and electrical conductivity to predict disease onset
Dec 01, 2009; Lukas, J M; Reneau, J K; Wallace, R; Hawkins, D; Munoz-Zanzi, C ... ABSTRACT This study evaluates the changes in milk production (yield; MY) and milk electrical conductivity (MEC) before and after disease diagnosis and proposes a cow health monitoring scheme based on observing individual daily MY and MEC. All reproductive and health events were recorded ...
Age, segment, and horn disease affect expression of cytokines, growth factors, and receptors in the epidermis and dermis of the bovine claw
Dec 01, 2009; Mills, J A; Zarlenga, D S; Habecker, P L; Dyer, R M ... ABSTRACT The aim of this study was to examine changes in RNA expression for growth factors, cytokines, and receptors in epidermal-dermal tissues of the bovine claw relative to host age, claw segment, and disease state of the horn. Epidermal-dermal tissues were collected from the ...
Heat-stress abatement during the dry period: Does cooling improve transition into lactation?
Dec 01, 2009; do Amaral, B C; Connor, E E; Tao, S; Hayen, J; Bubolz, J; Dahl, G E ... ABSTRACT Environmental factors, especially temperature and light exposure, influence the health and productivity of dairy cows during lactation, possibly via similar physiological mechanisms. For example, heat stress is a critical component of decreased milk yield during summer. However, ...
Genomic and phenotypic characterization of Escherichia coli isolates recovered from the uterus of puerperal dairy cows
Dec 01, 2009; Silva, E; Leitão, S; Tenreiro, T; Pomba, C; Nunes, T; da Costa, L Lopes; Mateus, L ... ABSTRACT The role of Escherichia coli in the pathogenesis of the puerperal uterine infection of the cow is largely unknown. It is proposed that E. coli favors the persistence of Arcanobacterium pyogenes and gram-negative bacteria that are pivotal to the establishment of the infection ....
The effect of dry period duration and dietary energy density on milk production, bioenergetic status, and postpartum ovarian function in Holstein-Friesian dairy cows
Dec 01, 2009; de Feu, M A; Evans, A C O; Lonergan, P; Butler, S T ... ABSTRACT Following parturition, it is typical for dairy cows to enter a period of negative energy balance and body condition loss to support mammary milk synthesis; this is associated with compromised reproductive performance. Alternative management strategies during the prepartum (dry) ...
