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.

Positive cases of bovine genital campylobacteriosis and bovine trichomonosis in the eradication program of La Pampa, Argentina: 2008 –2021
AbstractBovine genital campylobacteriosis, caused by the gram-negative bacteriaCampylobacter fetus venerealis, and bovine trichomonosis, caused by the parasite protozoanTritrichomonas foetus, are venereal diseases that occur with long intercalving periods and abortion. The control of both diseases relies on microbiological testing and culling infected bulls. Vaccination and antibiotic treatment may help in controlling campylobacteriosis but are not recommended for trichomonosis control. Several regions of the world have active control programs for trichomonosis, not campylobacteriosis. In Argentina, the state of La Pampa a...
Source: Tropical Animal Health and Production - March 5, 2024 Category: Veterinary Research Source Type: research

Candidate genes associated with reproductive traits in rabbits
AbstractIn the era of scientific advances and genetic progress, opportunities in the livestock sector are constantly growing. The application of molecular-based methods and approaches in farm animal breeding would accelerate and improve the expected results. The current work aims to comprehensively review the most important causative mutations in candidate genes that affect prolificacy traits in rabbits. Rabbits are a source of excellent-tasting meat that is high in protein and low in fat. Their early maturity and intensive growth are highly valued all over the world. However, improving reproductive traits and prolificacy ...
Source: Tropical Animal Health and Production - March 5, 2024 Category: Veterinary Research Source Type: research

Antibiotic resistance and virulence genes profile of  Non typhodial Salmonella species isolated from poultry enteritis in India
AbstractSalmonella species (spp) is the most important gastrointestinal pathogen present ubiquitously. Non typhoidal Salmonella (NTS) is commonly associated with gastroenteritis in humans. Layer birds once get infection with NTS, can become persistently infected withSalmonella Typhimurium and intermittently shed the bacteria. It results in a high risk of potential exposure of eggs to the bacteria. The current study was conducted to determine the serotype diversity, presence of virulence genes, antibiotic resistance pattern, and genes of  NTS from poultry enteritis. Out of 151 intestinal swabs from poultry total 118 NTS w...
Source: Tropical Animal Health and Production - March 2, 2024 Category: Veterinary Research Source Type: research

Recycling of animal protein wastes in the formulation of feed for Labeo rohita and Mystus vittatus —a comparative evaluation
AbstractLactic acid bacteria (LAB) are key players in the fermentation of organic wastes and their recycling as feedstuff for fish. Whey, a common dairy byproduct in India, is a cheap source of LAB and can be used to ferment animal byproducts. An experimental study was designed to explore whether the whey fermented animal protein blend (WFAPB) could be used as a fishmeal replacer in the formulation of feed for both stomach-less carp fishLabeo rohita and stomach-bearing catfishMystus vittatus. Experiments were performed with five isoproteinous, isolipidous, and isoenergetic feeds with WFAPB replacing fishmeal (FM) by 0% (T1...
Source: Tropical Animal Health and Production - March 2, 2024 Category: Veterinary Research Source Type: research

Identification of runs of homozygosity (ROHs) in Curraleiro P é-Duro and Pantaneiro cattle breeds
This study aimed to identify and characterize runs of homozygosis (ROHs), genes involved in production characteristics and adaptation to tropical systems and to estimate the inbreeding coefficient of Curraleiro P é-Duro (CPD) and Pantaneiro (PANT), two brazilian locally adapted cattle breeds. The results demonstrated that 79.25% and 54.29% of ROH segments were bigger than 8 Mb in CPD and PANT, respectively, indicating recent inbred matings in the studied population. Six homozygosis islands were identified simultaneously in both breeds, where 175 QTLs and 1072 genes previously described as associated with production trait...
Source: Tropical Animal Health and Production - March 2, 2024 Category: Veterinary Research Source Type: research

Genetic association between fat-to-protein ratio and traits of economic interest in early lactation Holstein cows in Brazil
AbstractThe aims of this study were to estimate the genetic parameters for fat-to-protein ratio (F:P) within the first 90  days of lactation and to examine their genetic associations with daily milk yield (MY), somatic cell score (SCS), and calving interval between the first and second calving (IFSC) and between the second and third calving (ISTC) during the first three lactations of Holstein cows. We utilized 200,626 production-related data officially recorded from 77,436 cows milked two or three times a day from 2012 to 2022, sourced from the Holstein Cattle Breeders Association of Paraná State, Brazil. The (co)varianc...
Source: Tropical Animal Health and Production - February 27, 2024 Category: Veterinary Research Source Type: research

Growth performance, meat quality and hematological parameters of broiler chickens fed safflower seed
AbstractThe aim of the current study was to determine the effects of dietary supplementation of safflower seed (SS) on the growth performance and hematological parameters of broiler birds along with the physicochemical, textural and sensory attributes of chicken meat. A total of 200 male chickens (7-days-old) were distributed into 5 groups (40 chickens in each) with 5 replicates of 8 chicks in a 42-day experiment. Each group was allocated to one of 5 dietary treatments, i.e., 0, 2.5, 5, 7.5, and 10% SS. The experimental diets were formulated for starter (7 to 21 days) and finisher (22 to 42 days) phases. Inclusion of SS in...
Source: Tropical Animal Health and Production - February 27, 2024 Category: Veterinary Research Source Type: research

A comparative study on the occurrence, genetic characteristics, and factors associated with the distribution of Listeria species on cattle farms and beef abattoirs in Gauteng Province, South Africa
AbstractThese cross-sectional studies reported the occurrence, genetic characteristics, and factors associated with the distribution ofListeria species on cattle farms and beef abattoirs in Gauteng Province, South Africa. A total of 328 samples (faeces, feeds, silage, and drinking water) were collected from 23 cattle farms (communal, cow-calf, and feedlot), and 262 samples (faeces, carcass swabs, and effluents) from 8 beef abattoirs (low throughput and high throughput) were processed using standard bacteriological and molecular methods to detectListeria species. The factors associated with the prevalence ofListeria species...
Source: Tropical Animal Health and Production - February 27, 2024 Category: Veterinary Research Source Type: research

Economic values of traits in the breeding goals defined by different dairy goat breeders ’ associations in Kenya
AbstractThe current study aimed at development of breeding objectives and estimation of the economic values for traits of economic importance to various dairy goat breeders associations. This was achieved through the development of a bio-economic model to derive economic values for the selected traits. The input and output parameters used represented the average performance of Saanen, Toggenburg and Alpine breeds. The gross margin was estimated using the R software. Economic values for milk yield (MY, kg), pre-weaning survival rate (PrSr, %), post-weaning survival rate, (PoSR, %), doe survival rate, (DoSR, %), and kidding ...
Source: Tropical Animal Health and Production - February 23, 2024 Category: Veterinary Research Source Type: research

Innate and adaptive immune responses in the intestine of camel (Camelus dromedarius) naturally infected with Mycobacterium avium subspecies paratuberculosis
The objective of the study is focusing on the nature of the immune responses, and the types of the recruited cells were studied in the intestine of naturally infected camels employing immunohistochemistry to analyze the expression of CD335, CD103, CD11b, and CD38 markers. Marked expression of some or all of the markers was observed in the ileum, mesenteric, and supramammary lymph nodes of the old infected camels. The expression of CD335, a well-known natural killer (NK) cell marker, was detected in the mesenteric lymph node, while the dendritic cell (DCs) marker, CD103, was markedly expressed in the villi and propria submu...
Source: Tropical Animal Health and Production - February 23, 2024 Category: Veterinary Research Source Type: research

Effects of different extenders, storage temperatures, and antioxidant supplementation on chilled semen quality: a review
AbstractThe successful preservation of ram semen is essential to promote genetic variability, ensure semen transportation, and inseminate multiple ewes. Currently, either animal or plant-based lipoprotein-based extenders are used for semen preservation. Animal product-based extenders include milk and egg yolk, while soybean lecithin is a plant-based extender. Although extenders containing products of animal origin better preserve the quality of chilled semen, the in vivo efficacy after 24  h of storage is still of great concern. Storage temperature is another important and effective factor in preserving sperm quality, whe...
Source: Tropical Animal Health and Production - February 22, 2024 Category: Veterinary Research Source Type: research

Effects of Carica papaya peel meal-based diets on rabbit bucks ’ spermiogram and reaction time
AbstractThe study aimed to evaluate the effects ofCarica papaya peel meal-based diet on spermiogram and reaction time in rabbit bucks. Ripe pawpaw fruits were harvested during the dry season. The peels were carefully removed from the pulp and sun-dried for a week. Afterward, they were ground and included in the test diets as pawpaw peel meal (PPM) at inclusion rates of 0%, 15%, and 30%. Rabbit bucks (n = 15) were randomly separated into three groups of five bucks and labeled as groups A, B, and C. Group A, the control group (0%), was fed the basal protein diet (BD), group B (PPM 15) was given a PPM-based diet (15%), wh...
Source: Tropical Animal Health and Production - February 22, 2024 Category: Veterinary Research Source Type: research

Cactus species and tree forage hay in the diet of dairy goats
AbstractThe purpose of this study was to evaluate the influence of the association ofOpuntia stricta (OS) orNopalea cochenillifera (NC) withMoringa hay (MY) orLeucaena hay (LY) on nutrient intake, ingestive behavior, serum biochemistry, and milk production and composition of dairy goat. Eight multiparous Saanen goats were used, with an average of 68  ± 8 days in milk and 48.5 ± 6 kg of initial weight, fed with the following treatment diets: OS + MY; OS + LY; NC + MY, and NC + LY. The treatments were distributed in a double Latin square, in a 2 × 2 factorial scheme (two varieties of cactus an...
Source: Tropical Animal Health and Production - February 20, 2024 Category: Veterinary Research Source Type: research

Application of the SeDeM system for the preparation of antiparasitic tablets from mesquite flour for use in sheep
AbstractThe use of herbal medicine to treat various diseases is becoming increasingly important as an alternative therapy. Numerous plants have been traditionally used for different purposes, including antiparasitic in humans and animals. Diseases caused by gastrointestinal parasites in ruminants, especially by the nematodeHaemonchus contortus, cause large economic losses to the producers, whether by complications of the diseases or the cost of treatment. The main way of handling nematodiasis is by administering anthelmintic drugs, but their excessive use has the disadvantage of causing drug resistance; therefore, an alter...
Source: Tropical Animal Health and Production - February 17, 2024 Category: Veterinary Research Source Type: research

Nutritional strategies, performance, digestibility, and carcass traits of Santa Ines and Rabo Largo breeds in a tropical climate
AbstractThe aim of this study was to compare the performance, intake, digestibility, ruminal parameters, carcass traits, and the yield of commercial cuts of Santa Ines (SI) and Rabo Largo (RL) breeds fed diets with high or low roughage-to-concentrate ratio (R:C) under a tropical climate. Twenty lambs from each breed were individually housed in covered pens and fed the experimental diets for 58  days. The diets were formulated to meet the growth requirements of lambs with a roughage-to-concentrate ratio of 70:30 and 30:70. Significant interactions of breed × diet for nutrient intake were observed (P <  0.05), w...
Source: Tropical Animal Health and Production - February 17, 2024 Category: Veterinary Research Source Type: research