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Special Issue "Research Advances in Dairy Cow Nutrition"

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A special issue of Animals (ISSN 2076-2615). This special issue belongs to the section "Animal Nutrition".

Deadline for manuscript submissions: 1 November 2023 | Viewed by 3408

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Special Issue Editors

Dr. Bruno Cappellozza

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Guest Editor

Chr. Hansen A/S, 2970 Hørsholm, Denmark
Interests: ruminant nutrition; ruminant physiology; feeds; immunology; endocrinology

Dr. Rodrigo Marques

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Guest Editor

Department of Animal and Range Sciences, Montana State University, Bozeman, MT 59717, USA
Interests: nutritional management; beef cattle operations; reproductive responses in cattle; offspring performance; immunity

Special Issue Information

Dear Colleagues,

Ruminant production systems and, more specifically, dairy production have been challenged to produce more milk with fewer natural resources, while also minimizing potential negative impacts on the environment. To achieve such a goal, improvements on nutrition, health, and genetics are required and must take place together. Hence, the objective of this Special Issue is to bring to light recent advances into any of these aspects, as well as nutrition and how the productivity of dairy operations has been improving over the years with the use of precise nutrition and feeding. In this Special Issue, original research articles and reviews are welcome.

We look forward to receiving your contributions.

Dr. Bruno Cappellozza
Dr. Rodrigo Marques
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Animals is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

dairy cow
energy
fatty acids
nutrition
protein
transition period

Published Papers (4 papers)

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Research

Open AccessArticle

Transcriptome Profile in Dairy Cows Resistant or Sensitive to Milk Fat Depression

and

Animals 2023, 13(7), 1199; https://doi.org/10.3390/ani13071199 - 29 Mar 2023

Viewed by 596

Abstract

Feeding linseed to dairy cows results in milk fat depression (MFD), but there is a wide range of sensitivity among cows. The objectives of this study were to identify target genes containing SNP that may play a key role in the regulation of milk fat synthesis in cows resistant or sensitive to MFD. Four cows were selected from a dairy farm after a switch from a control diet to a linseed-rich diet; two were resistant to MFD with a high milk fat content in the control (4.06%) and linseed-rich (3.90%) diets; and two were sensitive to MFD with the milk fat content decreasing after the change from the control (3.87%) to linseed-rich (2.52%) diets. Transcriptome and SNP discovery analyses were performed using RNA-sequencing technology. There was a large number of differentially expressed genes in the control (n = 1316) and linseed-rich (n = 1888) diets. Of these, 15 genes were detected as key gene regulators and harboring SNP in the linseed-rich diet. The selected genes MTOR, PDPK1, EREG, NOTCH1, ZNF217 and TGFB3 may form a network with a principal axis PI3K/Akt/MTOR/SREBP1 involved in milk fat synthesis and in the response to diets that induced MFD. These 15 genes are novel candidate genes to be involved in the resistance or sensitivity of dairy cows to milk fat depression. Full article

(This article belongs to the Special Issue Research Advances in Dairy Cow Nutrition)

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Open AccessArticle

Nutritional Quality of Milk Fat from Cows Fed Full-Fat Corn Germ in Diets Containing Cactus Opuntia and Sugarcane Bagasse as Forage Sources

Carolina C. F. Monteiro

Robert E. Mora-Luna

Júlio C. V. Oliveira

Djalma C. Santos

and

Marcelo de A. Ferreira

Animals 2023, 13(4), 568; https://doi.org/10.3390/ani13040568 - 06 Feb 2023

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Abstract

We evaluated the performance, milk composition, and milk fatty acid profile of cows fed diets composed of cactus cladodes (Opuntia stricta [Haw.] Haw), sugarcane bagasse and increasing levels of full-fat corn germ (FFCG). We hypothesized that ground corn can be effectively replaced by FFCG when cactus cladodes and sugarcane bagasse are used as forage sources. The cows were randomly distributed into two 5 × 5 Latin Squares and fed five diets in which ground corn was progressively replaced with full-fat corn germ (FFCG; 0%, 25%, 50%, 75%, or 100% of substitution). Adding FFCG to the diet increased milk production and milk fat content and reduced milk protein content. Overall, FFCG reduced the proportion of saturated FAs and increased mono- and polyunsaturated FAs in milk, including CLA isomers. In addition, activity indices of stearoyl-CoA desaturase were reduced by increasing levels of FFCG. We conclude that the substitution of corn for FFCG in diets based on cactus cladodes and sugarcane bagasse positively modifies the FA profile of milk and could add commercial value to milk products (e.g., CLA-enriched milk). In addition, the milk fat response indicates that the basal diet was favorable to the rumen environment, preventing the trans-10 shift commonly associated with milk fat depression. Full article

(This article belongs to the Special Issue Research Advances in Dairy Cow Nutrition)

Open AccessArticle

Effect of Temperature and Humidity on Milk Urea Nitrogen Concentration

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Animals 2023, 13(2), 295; https://doi.org/10.3390/ani13020295 - 14 Jan 2023

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Abstract

This study investigated the effect of ambient temperature and humidity on milk urea nitrogen (MUN) concentration in Holstein cows. Meteorological data corresponding to the dates of milk sampling were collected over six years. A linear mixed-effects model including a random effect term for cow identification was used to assess whether temperature and humidity were predictive of MUN concentration. Age, days in milk, temperature humidity index (THI), ration, milk yield, parity and somatic cell count were also evaluated as main effects in the model. A general linear model including all variables as random effects was then fitted to assess the contribution of each variable towards the variability in MUN concentration. Maximum daily temperature and humidity on the sampling day were positively associated with MUN concentration, but their interaction term was negatively associated, indicating that their effects were not independent and additive. Variables that contributed the most to the variability of MUN concentration were dietary crude protein (21%), temperature (18%) and other factors (24%) that were not assessed in the model (error term). Temperature has a significant influence on urea nitrogen concentration and should therefore always be considered when urea nitrogen concentration data are used to make inferences about the dietary management of dairy cows. Full article

(This article belongs to the Special Issue Research Advances in Dairy Cow Nutrition)

Open AccessArticle

Effects of Sugar Beet Silage, High-Moisture Corn, and Corn Silage Feed Supplementation on the Performance of Dairy Cows with Restricted Daily Access to Pasture

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Animals 2022, 12(19), 2672; https://doi.org/10.3390/ani12192672 - 05 Oct 2022

Viewed by 854

Abstract

A study was undertaken to assess the effect of supplementation with sugar beet silage, corn silage, or high-moisture corn on dairy performance, rumen, and plasma metabolites in dairy cows under conditions of restricted grazing in spring. Eighteen multiparous Holstein Friesian cows, stratified for milk yield (39.4 kg/day ± 3.00), days of lactation (67.0 days ± 22.5), live weight (584 kg ± 38.0), and number of calves (5.0 ± 1.5), were allocated in a replicated 3 × 3 Latin square design. Treatments were as follows: SBS (10 kg DM of permanent pasture, 7 kg DM of sugar beet silage, 4 kg DM of concentrate, 0.3 kg DM of pasture silage, 0.21 kg of mineral supplement); corn silage (10 kg DM of permanent pasture, 7 kg DM of corn silage, 4 kg DM of concentrate, 0.3 kg DM of pasture silage, 0.21 kg of mineral supplement), and HMC (10 kg DM of permanent pasture, 5 kg DM of high-moisture corn, 4.5 kg DM of concentrate, 1.2 kg DM of pasture silage, 0.21 kg of mineral supplement). Pasture was offered rotationally from 9 a.m. to 4 p.m. Between afternoon and morning milking, the cows were housed receiving a partial mixed ration and water ad libitum. The effect of treatments on milk production, milk composition, body weight, rumen function, and blood parameters were analyzed using a linear–mixed model. Pasture dry matter intake (DMI) was lower in SBS than CS (p < 0.05) and similar to HMC, but total DMI was higher in HMC than SBS (p < 0.05) and similar to CS. Milk production for treatments (32.6, 31.7, and 33.4 kg/cow/day for SBS, CS, and HMC, respectively), live weight, and fat concentration were not modified by treatments, but milk protein concentration was lower for SBS compared with HMC (p < 0.05) and similar to CS. B-hydroxybutyrate, cholesterol, and albumin were not different among treatments (p > 0.05), while urea was higher in SBS, medium in CS silage, and lower in HMC (p < 0.001). Ruminal pH and the total VFA concentrations were not modified by treatments (p > 0.05), which averaged 6.45 and 102.03 mmol/L, respectively. However, an interaction was observed for total VFA concentration between treatment and sampling time (p < 0.05), showing that HMC produced more VFA at 10:00 p.m. compared with the other treatments. To conclude, the supplementation with sugar beet silage allowed a milk response and composition similar to corn silage and HMC, but with a lower concentration of milk protein than HMC. In addition, sugar beet silage can be used as an alternative supplement for high-producing dairy cows with restricted access to grazing during spring. Full article

(This article belongs to the Special Issue Research Advances in Dairy Cow Nutrition)

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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

1. Tentative paper: Effects of amount and profile of amino acids supply on lactation performance, mammary gland metabolism, and nitrogen efficiency in dairy cows

Submitting authors: Prof. Dr. Marina Danes

2. Tentative paper: Evaluating the impact of high- and low-starch diets on the ruminal microbiota of dairy cows

Submitting author: Dr. Garret Suen

3. Tentative paper: Full-fat corn germ as a lipid supplement for dairy cows fed Opuntia cactus cladodes and sugarcane bagasse as forage sources: milk production and nutritional quality of milk fat

Submitting author: Dr. Marcelo Ferreira

4. Tentative paper: Advances in dairy cattle nutrition and health (Review paper)

Submitting author: Dr. Pedro Melendez

5. Tentative paper: Research on differentiated feeding depending on the lactation phase and productive level

Submitting author: Enea Danut Nicolae

6. Tentative paper: Shade effects milking performance, nutrient digestibility, immunity, and antioxidant capability of dairy cows fed in open shed

Submitting author: Yuhong Gao

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