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Feeding reduced-fat dried distillers grains with solubles to lactating Holstein dairy cows does not alter milk composition or cause late blowing in cheese
10.3168/jds.2017-13699 2018-04-11 Feeding dried distillers grains with solubles (DDGS) to lactating dairy cows has been implicated as a cause of late blowing defects in the production of Swiss-style cheeses. Our objectives were (1) to test the effect of feeding reduced-fat DDGS (RF-DDGS; ∼6% ... |
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Effects of spray-dried plasma protein product on early-lactation dairy cows
10.3168/jds.2017-13795 2018-03-28 Spray-dried plasma protein (SDP) compared with blood meal (BM) may contain various functional and active components that may benefit animal health. The objective of this experiment was to investigate the effects of feeding SDP or BM on production and blood pr... |
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Interaction of 5-hydroxy-l-tryptophan and negative dietary cation-anion difference on calcium homeostasis in multiparous peripartum dairy cows
10.3168/jds.2017-13938 2018-03-28 Hypocalcemia affects almost 50% of all dairy cows. Our laboratory has previously demonstrated that infusions of the serotonin precursor 5-hydroxy-l-tryptophan (5-HTP) increase circulating calcium concentrations in the Holstein transition cow. It is unknown wh... |
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Use of a culture-independent on-farm algorithm to guide the use of selective dry-cow antibiotic therapy
10.3168/jds.2017-13807 2018-03-28 An algorithm using only computer-based records to guide selective dry-cow therapy was evaluated at a New York State dairy farm via a randomized field trial. DairyComp 305 (Valley Ag Software, Tulare, CA) and Dairy Herd Improvement Association test-day data we... |
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Quantitative polymerase chain reaction coupled with sodium dodecyl sulfate and propidium monoazide for detection of viable Staphylococcus aureus in milk
10.3168/jds.2017-14087 2018-03-28 Conventional quantitative PCR (qPCR) are unable to differentiate DNA of viable Staphylococcus aureus cells from dead ones. The aim of this study was to use sodium dodecyl sulfate (SDS) and propidium monoazide (PMA) coupled with lysostaphin to detect viable St... |
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Essential oil and monensin affect ruminal fermentation and the protozoal population in continuous culture
10.3168/jds.2017-13646 2018-03-28 The interaction of monensin and essential oil was hypothesized to suppress protozoa and methane production while maintaining normal rumen function. The objective of this study was to determine the effects of feeding monensin (MON) and CinnaGar (CIN, a commerc... |
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Responses of dairy cows with divergent residual feed intake as calves to metabolic challenges during midlactation and the nonlactating period
10.3168/jds.2017-12569 2018-03-28 Residual feed intake (RFI) is defined as the difference between the actual and expected feed intake required to support animal maintenance and growth. Thus, a cow with a low RFI can obtain nutrients for maintenance and growth from a reduced amount of feed com... |
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Effect of human chorionic gonadotrophin administration 2 days after insemination on progesterone concentration and pregnancy per artificial insemination in lactating dairy cows
10.3168/jds.2017-14058 2018-03-28 The aim of this study was to examine the effect of a single administration of human chorionic gonadotrophin (hCG) during the establishment of the corpus luteum (CL) on progesterone (P4) concentration and pregnancy per artificial insemination (P/AI) in lactati... |
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Technical note: High-throughput method for antifungal activity screening in a cheese-mimicking model
10.3168/jds.2017-13518 2018-03-28 In this study, we developed a high-throughput antifungal activity screening method using a cheese-mimicking matrix distributed in 24-well plates. This method allowed rapid screening of a large variety of antifungal agent candidates: bacterial fermented ingred... |
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Short communication: Pair housing dairy calves in modified calf hutches
10.3168/jds.2017-14361 2018-03-28 The objective of this study was to test if body weight (BW) and starter intake increased and reaction to novelty decreased for preweaning Holstein heifer calves pair housed in modified hutches (n = 8 pairs) versus individually housed in a single hutch (n = 14... |