Genetic progress for forage quality has been poor in alfalfa (Medicago sativa L.), the most-grown legume worldwide. This study aimed at exploring opportunities marker-assisted selection (MAS) and genomic of traits based on breeding values parent plants. Some 154 genotypes from a broadly-based reference population were genotyped by genotyping-by-sequencing (GBS), phenotyped leaf-to-stem ratio, leaf stem contents protein, neutral detergent fiber (NDF) acid lignin (ADL), NDF digestibility after...

The present study aimed to investigate the association between stayability (STAY) traits, muscularity, and body condition score (BCS) in Italian Simmental dual-purpose cows. Data were collected from 2,656 cows linearly scored their first lactation 2002 2020 reared 324 herds. binary trait STAY, which is ability of a cow stay herd, was obtained for each cow-lactation available up parity 5 (from STAY1-2 STAY4-5). Analysis STAY carried out using logistic regression, considering fixed effect...

In vitro and in vivo challenge studies were undertaken to develop an in-feed additive of microencapsulated propionic, sorbic acids pure botanicals control Campylobacter jejuni broilers at slaughter age.Organic (OA) tested against Camp. jejuni, whereas vivo, chickens fed either a diet, or increasing doses the for 42 days (experiment 1); second experiment, received 0.1 0.3% from day 0 21 22 42. The consistently reduced caecal counts any given dose (exp. 1) inclusion plan 2). Moreover, it was...

The role of indigestible NDF is essential in relation to OM digestibility prediction, total tract digestibility, rumen fill, passage rate, and digestion kinetics. Moreover, the truly (iNDF) represents a core point dynamic models used for diet formulations. However, despite its wide possible applications, few trials have been conducted quantify iNDF even fewer investigate whether or not it consistent among different forage sources. objective this study was predict by measuring residual after...

Dairy cows are exposed to multiple stressors during the productive cycle, such as metabolic challenges, overcrowding, grouping change, environmental stress and dietary errors. Thus, it is essential study reliable markers able detect conditions in dairy farms. This evaluates cows' immunologic after sudden combined exposition a high-grain diet (75% concentrates) abrupt change of housing system (from free stall tie stall). A group twenty-four Holstein were enrolled challenge 28 days duration....

Dairy cows are often exposed to multiple stressors in a lactation-cycle, with sub-acute ruminal acidosis (SARA) frequent example of nutritional stress. SARA affects and intestinal equilibrium resulting dysbiosis localized systemic inflammation impacting animal health productivity. OmniGen-AF (OMN, Phibro Animal Health Corporation, Teaneck, NJ, USA) is feed product recognized for modulating innate immune function, especially during periods The objective this study was determine the effects...

Introduction The aim of this study was the evaluation nutrient excretion patterns in samples feces collected every 2 h to define best sampling protocol for estimation apparent digestibility. Methods Four multiparous mid-lactation Holstein cows, housed a tie stall barn and milked twice day (0800; 1900 h), were enrolled. Dry total mixed ration (TMR) without silages fed once (0800 h) per day. Feces sampled 72 h. Each sample divided 3 portions: hourly (8, 10, 12, 14, 16, 18, 20, 22, 00, 2, 4,...

Longevity in dairy and dual-purpose cattle is a complex trait which depends on many individual managerial factors. The purpose of the present study was to investigate survival (SURV) rate Italian Simmental cows across different parities. Data this referred 2 173 primiparous under official milk recording that calved between 2002 2020. Only linearly classified for type traits, including muscularity (MU) body condition score (BCS) were kept. Survival analysis carried out, through Cox regression...

The aim of this study was to develop near-infrared spectroscopy (NIRS) prediction models for the estimation chemical components and fibre undegradable fractions (uNDF) hay-based total mixed rations (TMR). A 205 TMR samples were used study. All measured using standard AOAC reference methods expressed as percentages dry matter (DM). Prediction developed both cross- independent validation different mathematical treatments applied on spectral data. best treatment chosen based method which...

The aim of this research was to evaluate the productive responses cows fed a dry hay based total mixed ration (TMR) in which sorghum (SOR) or corn (COR) meal (8 kg/h/d) were main source starch. study involved two dairy herds located Parmigiano Reggiano PDO area, for 1,400 (30% primiparous and 70% pluriparous). Each herd alternatively SOR COR TMR 4 periods 3 weeks: weeks adaptation one week data collection. Total milk production composition, cheesemaking properties, fatty acid content cheese...

Hay-based diets are typically used in Parmigiano Reggiano cheese production. feeding regulation prohibits 00-rapeseed dietary inclusion. The objectives of this study were to investigate the effects substituting soybean-meal with different levels 00-rapeseed-meal dairy cows' diets, evaluate possibility include it regulation. had a Latin square design 8 tie stall cows. isoenergetic and isoproteic treatments differed protein source (% DM): S (0.0% 00-rapeseed-meal, 9.3% soybean-meal), LR (3.8%...

Beet and cane molasses mainly contain mono- di-, tri-saccharides, composed by hexoses, as well pentoses in traces. However, rationing software consider sugars only one entity, with a rate of digestion ∼20% h−1. The aim this initial study was to investigate evaluate the vitro dynamics rates sugar fraction molasses. Three beet three were randomly selected from variety samples collected world-wide digested via rumen fermentation, at 1, 2, 3, 4, 6, 8, 24 h. Samples then analysed specific...

The intramuscular fat (IMF), recognized by the consumer as marbling, is an important meat quality trait. objective of this study was to validate a new method beef marbling evaluation image analysis. assessment compared with two known measurements: chemical IMF and USDA scores. Moreover, relationship between measurements other parameters investigated. Samples Longissimus thoracis et lumborum (LTL) muscle were obtained from carcasses 39 Italian crossbred heifers 62 Angus bred heifers, that...

The aim of the present study was to investigate effect substitution, in dairy cow rations, traditional protein and starch sources with more sustainable “circular” feeds increase sustainability production. For this purpose, eight multiparous mid-lactating cows were blocked assigned one four treatments used a replicated 4 × Latin squares design 21-days periods (14 days adaptation 7 data collection). Two different circular feedstuffs tested: bakery’s former foodstuff (FF) wheat distiller’s...

The aim of this study was to assess if molasses could modify VFA production and the rumen microbial community in vitro. Three beet (treatment Beet) three cane Cane) preparations were randomly selected from a variety samples collected worldwide incubated vitro with fluid along control sample CTR, which no used). Flasks for analysis sampled at 0, 1, 2, 3, 4, 6, 8, 24 h each incubation. For microbiota analysis, fermentation flask after 12 subjected DNA extraction V3–V4 16S rRNA gene sequencing...