Tropical Animal Health and Production This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Multivariate analysis of morphometric traits of Malaimadu cattle —autochthonous draft cattle of south India
This study aimed to analyze the morphological structure of the Malaimadu cattle using a multivariate approach that explains and best represents body conformation. Sixteen body measurements were obtained from 156 adult female cattle from their native breeding tract. The Nearest Neighbor Method of Hierarchical Cluster analysis was used to group the morphometric traits into clusters. Pearson ’s coefficients of correlation (r) were estimated to determine the phenotypic correlations between different body measurements. Traits were analyzed using varimax rotated principal component analysis (PCA) with Kaiser normalization. Clu...
Source: Tropical Animal Health and Production - October 21, 2023 Category: Veterinary Research Source Type: research

Meta-analysis of blood indices and production physiology of broiler chickens on dietary fermented cassava intervention
In conclusion, dietary fermented cassava negatively influenced carcass yield, growth performance, and aspects of blood indices of broiler chickens, but did not affect abdominal fat content, visceral organ weights, and cut-part weights. However, more innovative research is needed to improve the feeding quality of cassava using other biotechnological tools in order to maximise its potential as an energy source in broiler chickens. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - October 21, 2023 Category: Veterinary Research Source Type: research

The effects of infused olive leaf offered with drinking water on growth performance, ileum histomorphologic characteristics, and some cecal microorganism counts of broiler chickens
AbstractThe aim of the study was to investigate the effects of infused olive leaves (IOL) in drinking water on the growth performance, carcass characteristics, ileal histomorphology, and cecal microorganisms of broiler chickens. A total of 210 day-old male broiler chicks were randomly divided into 5 treatment groups with 6 replicates and 7 chicks in each replicate. All chicks received a corn-soybean-based diet and drinking water with or without IOL ad libitum for 42 days. Treatments were drinking water without any additives (control group), drinking water including IOL of 5 m/L (IOL5), 10 m/L (IOL10), 15 ml/L (IOL15), and ...
Source: Tropical Animal Health and Production - October 20, 2023 Category: Veterinary Research Source Type: research

Productive, thermoregulatory, and hormonal responses of dairy goats supplemented with selenium-enriched yeast in the Brazilian semi-arid region
AbstractThe aim of this study was to evaluate the effect of adding selenium-enriched yeast (SE) in the diet of dairy goats during 60 days of lactation and its effect on productive, thermoregulatory, and hormonal responses of animals managed in a semi-arid region. Sixteen Saanen × Toggenburg crossbred goats were used in a completely randomized design. Goats were weighed, and their milk yield was monitored weekly. Before the animals entered the treatments and at every 20-day milk producing, blood samples were collected to determine theSE levels. At 20, 40, and days of the lactation cycle, individual milk samples were collec...
Source: Tropical Animal Health and Production - October 19, 2023 Category: Veterinary Research Source Type: research

Detoxified castor seed meal replaces soybean meal in the supplement for Holstein-Zebu crossbred steers finished on tropical pasture during the rainy season
The objective of this study was to examine the effect of replacing soybean meal (SBM) with detoxified castor seed meal (DCM) on the intake, digestibility, feeding behavior, and performance of pasture-finished (rainy season) steers supplemented with concentrate at 0.4% of their body weight. Forty ½ Holstein + ½ Zebu steers (initial weight: 283.3 ± 36.3 kg) were allocated to four treatments in a completely randomized experimental design. Treatments consisted of diets in which DCM replaced 0, 30, 60, and 90% of SBM in the supplement dry matter (DM). The steers were finished on anUrochloa brizantha pasture and the ...
Source: Tropical Animal Health and Production - October 19, 2023 Category: Veterinary Research Source Type: research

Strategies for the identification of precocity in zebu beef cattle based on mixed nonlinear models and multivariate approach
AbstractThe use of mixed nonlinear models reduces the residual variance by including random effects, thereby improving the estimates in growth curves. Therefore, we tested distinct mixed nonlinear models (Richards, Brody, Gompertz, Logistic, and Von Bertalanffy) to model the growth curves of Zebu cattle herds raised on pasture in Brazil. In addition, we evaluated the diversity among breeds using hierarchical cluster multivariate analysis (full linkage) based on asymptotic weight (A), maturity rate (K), absolute growth rate (AGR), and absolute maturity rate (AMR) adjusted to 205, 365, 550, and 730  days of age. Body weight...
Source: Tropical Animal Health and Production - October 19, 2023 Category: Veterinary Research Source Type: research

Economic considerations of breeding for polledness versus disbudding in beef cattle
AbstractThe domestication of animals has rendered horns less necessary for survival. Moreover, the use of polled and disbudded animals is interesting in order to avoid injuries of animals and handlers, among other advantages. We therefore conducted a comparative economic analysis of different traditional disbudding techniques versus selective breeding for polledness in Nelore cattle, the main beef breed of tropical systems in Brazil. The cost to obtain animals without horns was estimated in three different scenarios: disbudding with hot iron, disbudding with caustic paste, and phenotypic selection for polled animals. Price...
Source: Tropical Animal Health and Production - October 19, 2023 Category: Veterinary Research Source Type: research

Immunostimulant effects of diet supplementation with yellow (Pouteria campechiana), white (Casimiroa edulis), and black (Diospyros digyna) sapote nanocapsules on laying hens: in vitro and in vivo study
AbstractPoultry is commonly infected by different bacteria and parasites in the environment, resulting in increased morbidity and mortality, but immunostimulants have been enhancing non-specific defense mechanisms conferring laying hens ’ protection. For this purpose, the pulp of yellow (Pouteria campechiana), white (Casimiroa edulis), and black (Diospyros digyna) sapotes were nanoencapsulated (YWB-SN) and evaluated in laying hens ’ peripheral blood leukocytes to test their addition to the experimental diets at a concentration of 0.5% (5g/kg of dry food) for 1 month (with two samples at days 15 and 30). TheYWB-SN were ...
Source: Tropical Animal Health and Production - October 18, 2023 Category: Veterinary Research Source Type: research

Prevalence of Cryptosporidium spp. infection in a working horse population in Egypt
This study provided evidence-based information on the prevalence ofCryptosporidium spp. infection in the study area. However, the potential zoonotic risk ofCryptosporidium cannot be confirmed until further studies are conducted to genotype these parasites. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - October 18, 2023 Category: Veterinary Research Source Type: research

Effect of supplementation of fennel seed powder on intake, growth performance, gut health and economics in goats
AbstractThe aim of this study was to evaluate the effect of fennel seed powder (FSP) at varying levels on intake, growth, gut health, body condition, body measurements and economics in post weaned male goats. For this experiment a total of 30 post weaned male kids of Barbari goats with statistically similar body weight (P = 0.575) and age (3–4 months) were randomly distributed in three comparable groups each having 10 kids. Three groups viz. control (no supplementation), T1 (0.5% of DM in diet) and T2 (1.0% of DM in diet) were formed and the study continued up to 5 months. Statistical analysis of results sho wed si...
Source: Tropical Animal Health and Production - October 18, 2023 Category: Veterinary Research Source Type: research

Genome-wide association study for growth traits in Blanco Orejinegro and Romosinuano cattle
AbstractGrowth traits are economically important characteristics for the genetic improvement of local cattle breeds. Genome-wide association studies (GWAS) provide valuable information to enhance the understanding on the genetics of complex traits. The aim of this study was to perform a GWAS to identify genomic regions and genes associated to birth weight, weaning weight adjusted for 240  days, 16 months, and 24 months weight in Romosinuano (ROMO) and Blanco Orejinegro (BON) cattle. A single-step genomic-BLUP was implemented using 596 BON and 569 ROMO individuals that were genotyped with an Illumina BovineSNP50 BeadChip...
Source: Tropical Animal Health and Production - October 17, 2023 Category: Veterinary Research Source Type: research

Comparative study of HA and HNB staining RT-LAMP assays for peste des petits ruminants virus detection in West African Dwarf goats
In conclusion, HA could be a good tool for rapid diagnosis of PPRV in a developing country setting. However, HNB staining RT-LAMP assay demonstrated high sensitivity for accurate diagnoses of PPRV and as an important diagnostic tool when precise phenotyping is desired. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - October 12, 2023 Category: Veterinary Research Source Type: research

Genome-wide association study reveals candidate genes for traits related to meat quality in Colombian Creole hair sheep
In this study, we generated a baseline for GWAS related to meat quality traits i n Colombian Creole hair sheep that can be used for future genomic selection plans. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - October 12, 2023 Category: Veterinary Research Source Type: research

Effects of monensin in supplements for beef cattle in tropical grazing systems during the rainy season
AbstractTwo experiments were carried out to evaluate the effect of monensin in supplements for grazing heifers. In experiment I, treatments consisted of protein supplements (low intake – 0.5 kg/animal/day and high intake – 1.0 kg/animal/day) associated or not with monensin. Animal performance, nutrient intake, and digestibility were evaluated. Forty crossbred heifers with an initial body weight (BW) of 213.8 ± 4.5 kg were used. There was no difference in average daily gain be tween treatments (average of 0.588 kg/animal/day). There was no interaction between monensin and supplements for intake parameters and digestibi...
Source: Tropical Animal Health and Production - October 10, 2023 Category: Veterinary Research Source Type: research

Seasonal distribution of repeat breeder cows and evaluation of modified protocols for post AI treatment during summer
In this study, one farm in Northern Greece was chosen on the basis of subfertility. First, the available reproductive data of the previous year were evaluated; then, the farmer was advised to use the most common treatments for RB [GnRH with the third artificial insemination (AI+GnRH) or ovsynch in cows found empty after the second AI], and their efficacy was monitored throughout the year. Cows (n = 147) 2.5 to 4.5 years old were included. During the next year, post AI treatments (meta-ovsynch and meta-AI) were used during summer; GnRH (100 μg of gonadorelin) alone or in combination with meloxicam (0.5 mg/kg BW) was used d...
Source: Tropical Animal Health and Production - October 10, 2023 Category: Veterinary Research Source Type: research