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.

Mathematical models to predict the lamb weight at birth and at weaning reared in the tropical warm-climate pasture
AbstractOur objective was to evaluate the productive parameters of ewes and their lambs in relation to ewe age and to develop models for predicting lamb weight at birth and weaning in a tropical warm-climate pasture. Individual data were collected from 273 ewes and 273 lambs, between 2013 and 2021. During this period all animals were kept on pastures ofBrachiaria brizantha cv. Marandu All lambs in the experiments were supplemented in creep-feeding. A descriptive statistical analysis was performed using the PROC SUMMARY procedure in SAS (SAS University Edition, SAS Institute Inc. Cary, CA, USA). Pearson correlation coeffici...
Source: Tropical Animal Health and Production - September 26, 2023 Category: Veterinary Research Source Type: research

Comparative therapeutic efficacy of oral administration of gluconeogenic precursors with nicotinamide and intravenous hypertonic dextrose solution for management of subclinical ketosis in Chilika buffaloes
AbstractKetosis in dairy animals originates from negative energy status, associated increased absorption, and production of ketone bodies exceeding their use by the ruminants as an energy source. The present therapeutic experiment was carried out in 29 herds of Chilika buffaloes in 16 villages of three adjoining districts of Chilika Lake, Puri, Khurda, and Ganjam. Twenty Chilika buffaloes, detected positive for subclinical ketosis, were randomly selected for the study and divided into 2 groups, groups II and III, and were treated with hypertonic dextrose solution intravenously or gluconeogenic precursors along with nicotin...
Source: Tropical Animal Health and Production - September 26, 2023 Category: Veterinary Research Source Type: research

Review: genetic background of milk fatty acid synthesis in bovines
AbstractMilk fat composition is an important trait for the dairy industry as it directly influences the nutritional and technological properties of milk and other dairy products. The synthesis of milk fat is a complex process regulated by a network of genes. Thus, understanding the genetic variation and molecular mechanisms regulating milk fat synthesis will help to improve the nutritional quality of dairy products. In this review, we provide an overview of milk fat synthesis in bovines along with the candidate genes involved in the pathway. We also discuss de novo synthesis of fatty acids (ACSS, ACACA, FASN), uptake of FA...
Source: Tropical Animal Health and Production - September 26, 2023 Category: Veterinary Research Source Type: research

Identification of local camel populations in Turkiye using morphological, genetic, and breeding info
In this study, local camel populations in Aydin, Denizli, and Antalya cities of Turkiye were examined in three dimensions as demographic, morphological, and genetic. A face-to-face survey of 117 breeders was used to determine demographic definitions. While the region where local camels were detected the most was determined as Antalya Region with 78.6%, it was determined that 82.6% of the breeders participating in the survey preferred to breed camels due to their docile temperament. Body measurements were made on 45 camels for morphological identification. Moreover, DNA were sampled with oral swabs from 57 camels for phylog...
Source: Tropical Animal Health and Production - September 26, 2023 Category: Veterinary Research Source Type: research

Life cycle assessment of greenhouse gas emission from the dairy production system — review
AbstractClimate change is altering ecological systems and poses a serious threat to human life. Climate change also seriously influences on livestock production by interfering with growth, reproduction, and production. Livestock, on the other hand, is blamed for being a significant contributor to climate change, emitting 8.1 gigatonnes of CO2-eq per year and accounting for two-thirds of global ammonia emissions. Methane (CH4), nitrous oxide (N2O), and carbon dioxide (CO2) are three major greenhouse gases (GHG) that are primarily produced by enteric fermentation, feed production, diet management, and total product output. R...
Source: Tropical Animal Health and Production - September 25, 2023 Category: Veterinary Research Source Type: research

Determining and predicting feed intake in crossbred sheep from weaning until maturity
This study aimed to develop genotype-specific feed intake models for South African feedlot lambs. Four ram and four ewe lambs each of eight genotypes were raised under ideal growth conditions from weaning until 1 year of age. Feed intake and growth were monitored throughout this period. The intake data were then used to fit various models to predict daily feed intake, intake as percentage of body weight, cumulative intake and feed conversion ratio. No satisfactory univariate models could be found for the prediction of daily or percentage intake, but a good fit was found for cumulative intake data (R2>0.80,P<0.01). Th...
Source: Tropical Animal Health and Production - September 23, 2023 Category: Veterinary Research Source Type: research

Semen collection and ejaculation trigger changes in the blood flow of the reproductive system in rams
In conclusion, ejaculation modifies the reproductive system ’s blood flow, with slight variations depending on the studied ejaculation methods. Additionally, ejaculation altered the internal iliac and supratesticular arteries PSV, and the supratesticular artery end-diastolic velocity (EDV) in rams. The supratesticular artery PSV was the only studied varia ble that differed according to the procedure that triggered the ejaculation. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - September 23, 2023 Category: Veterinary Research Source Type: research

Emerging alternatives to traditional anthelmintics: the in vitro antiparasitic activity of silver and selenium nanoparticles, and pomegranate (Punica granatum) peel extract against Haemonchus contortus
This study investigated the in vitro anthelmintic activity of silver nanoparticles (AgNPs), selenium nanoparticles (SeNPs), and pomegranate peel extract (Punica granatum; PPE) on different stages ofH. contortus: eggs, larvae, and adults. The in vitro anthelmintic efficacy was evaluated using the egg hatching inhibition assay (EHA), the third larval stage paralysis assay (LPA), and the adult worm motility inhibition assay (WMI). Six dilutions of PPE were utilized for EHA, LPA, and WMI, ranging from 0.25 to 6 mg/ml. AgNPs dilutions ranged from 0.00001 to 1.0 μg/ml for EHA and LPA and 1 to 25 μg/ml for WMI. SeNPs were utili...
Source: Tropical Animal Health and Production - September 22, 2023 Category: Veterinary Research Source Type: research

Effect of a preventive strategic control program, with imidocarb dipropionate, against tick fever agents in dairy calves
AbstractChemoprophylaxis with dipropionate imidocarb (IMD) is a method adopted to prevent cattle tick fever (TF). Sixty weaned dairy heifers ( ±60 days old), without previous exposure toRhipicephalus microplus ticks, were housed in Tifton paddocks and were subsequently exposed toR. microplus ticks and monitored up to 315 days old. Thirty animals were kept as controls (T01) and 30 received five preventive strategic treatments with IMD at 21-day intervals (T02). The heifers were monitored weekly by means of packed cell volume (PCV) and blood smears to evaluate the presence of TF agents. Salvage treatments (ST) with diminaze...
Source: Tropical Animal Health and Production - September 22, 2023 Category: Veterinary Research Source Type: research

Comment on “Cow products: boon to human health and food security”
(Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - September 22, 2023 Category: Veterinary Research Source Type: research

Genetic analysis for semen quality traits in buffalo bulls
In conclusion, this study ascertains that genetic parameters of semen traits can be considered during the selection of buffalo bulls in breeding program. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - September 22, 2023 Category: Veterinary Research Source Type: research

Effects of dietary xylanase plus β-glucanase levels on total-tract nutrient and energy digestibility and N balance of growing pigs fed diets containing corn distillers dried grains
AbstractThe addition of corn distillers dried grains (corn-DDG) to pig diets has been limited due to concerns about fiber content. The aim of the present study was to determine the metabolizable energy of corn-DDG (Exp. I) and the dose-response effects of dietary xylanase plus β-glucanase on the nutrient and energy digestibility of growing pigs fed diets containing 25% corn-DDG (Exp. II). Pigs in individual cages were subjected to feeding periods of 5 days for voluntary feed intake quantification followed by 5 days for collection of feces and urine. In Exp. I, 10 castr ated male pigs with 61.10 ± 3.25 kg BW distri...
Source: Tropical Animal Health and Production - September 22, 2023 Category: Veterinary Research Source Type: research

Subsistence swine farming: seroprevalence and risk factors associated with Lawsonia intracellularis infection in the state of Minas Gerais Brazil in 2016
In conclusion, anti-L. intracellularis antibodies were widely dispersed in subsistence pig farming ’s in Minas Gerais, indicating a wide circulation of the agent in this type of production system. The interactions of animals raised close to peri-urban areas, extensively, and close to landfills are risk factors for spread of PPE. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - September 22, 2023 Category: Veterinary Research Source Type: research

Standardized ileal digestible tryptophan and lysine affects the eating and sleeping behavior of 15 –30 kg barrows
The objective of this study was to evaluate the effect of standardized ileal digestible (SID) tryptophan (Trp) and lysine (Lys) levels on eating and sleeping behavior and the respective feed intake of barrows. Sixty-four pigs, averaging 15.00 ± 1.63 kg of initial body weight, were used and distributed in a randomized blocks design, in a 4 × 4 factorial scheme, consisting of four levels of SID Trp (0.155, 0.185, 0.215, 0.245%) and four levels of SID Lys (0.972, 1.112, 1.252, and 1.392%). Behavior evaluation was performed by an instantan eous sampling using 10-min intervals during 24 h, at each 7 days (days 7, 14, and 21),...
Source: Tropical Animal Health and Production - September 21, 2023 Category: Veterinary Research Source Type: research

Herd health and reproductive management associated with lamb weight gain and mortality in sub-Saharan drylands —a case from Ethiopia
This study highlights that health interventions in ewes improve lamb survival and weight gain and that the care of lambs during the first month of life is crucial for overall herd productivity. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - September 21, 2023 Category: Veterinary Research Source Type: research