Genetic parameters for bull effects on in vitro embryo production (IVP) and relationship between semen quality traits and IVP performance
This study estimates genetic parameters for bull effects on IVP performance traits including blastocyst rate, hatching rate and an index trait combining Blastocyst rate, Kinetic Score, and Morphology score (BL_M_K). The IVP experiments were performed using oocytes aspirated from slaughterhouse ovaries from Holstein cows, fertilized with semen from 123 Holstein bulls. A total of 77 in vitro fertilization (IVF) experiments with 163 records (different IVF groups) were available for the analysis. The results indicate low to moderate heritability and moderate to high repeatability estimates for bull effects on IVP performance t...
Source: Animal Reproduction Science - February 28, 2024 Category: Zoology Authors: G Gebreyesus J B Secher M S Lund K Kupisiewicz M Ivask T Hallap P P ärn G Su Source Type: research

Reproductive tract morphology and symmetry of farmed common eland (Tragelaphus oryx) bulls, and their relationship with secondary sexual traits and social rank
This study provides basic information about the reproductive tract morphology, symmetry, and their relationships with secondary sexual traits, social rank, and temperament in common eland. Six eland males (2-2.5 years old; 203 ± 20 kg) were utilised for the study. Social rank, body weight and body condition score, temperament score, and horn size were determined before the animals were culled, and their reproductive tracts were collected for morphometric and histological evaluation. Results indicate relatively low asymmetry in bilateral reproductive tract components. Individual traits of eland bulls such as age, body weig...
Source: Animal Reproduction Science - February 28, 2024 Category: Zoology Authors: Jerico Consolacion Francisco Ceacero Abubakar Sadiq Musa Veit Ny Radim Kotrba Josef Illek Mi ša Škorič Tersia Needham Source Type: research

Genetic parameters for bull effects on in vitro embryo production (IVP) and relationship between semen quality traits and IVP performance
This study estimates genetic parameters for bull effects on IVP performance traits including blastocyst rate, hatching rate and an index trait combining Blastocyst rate, Kinetic Score, and Morphology score (BL_M_K). The IVP experiments were performed using oocytes aspirated from slaughterhouse ovaries from Holstein cows, fertilized with semen from 123 Holstein bulls. A total of 77 in vitro fertilization (IVF) experiments with 163 records (different IVF groups) were available for the analysis. The results indicate low to moderate heritability and moderate to high repeatability estimates for bull effects on IVP performance t...
Source: Animal Reproduction Science - February 28, 2024 Category: Zoology Authors: G Gebreyesus J B Secher M S Lund K Kupisiewicz M Ivask T Hallap P P ärn G Su Source Type: research

Reproductive tract morphology and symmetry of farmed common eland (Tragelaphus oryx) bulls, and their relationship with secondary sexual traits and social rank
This study provides basic information about the reproductive tract morphology, symmetry, and their relationships with secondary sexual traits, social rank, and temperament in common eland. Six eland males (2-2.5 years old; 203 ± 20 kg) were utilised for the study. Social rank, body weight and body condition score, temperament score, and horn size were determined before the animals were culled, and their reproductive tracts were collected for morphometric and histological evaluation. Results indicate relatively low asymmetry in bilateral reproductive tract components. Individual traits of eland bulls such as age, body weig...
Source: Animal Reproduction Science - February 28, 2024 Category: Zoology Authors: Jerico Consolacion Francisco Ceacero Abubakar Sadiq Musa Veit Ny Radim Kotrba Josef Illek Mi ša Škorič Tersia Needham Source Type: research

Genetic parameters for bull effects on in vitro embryo production (IVP) and relationship between semen quality traits and IVP performance
This study estimates genetic parameters for bull effects on IVP performance traits including blastocyst rate, hatching rate and an index trait combining Blastocyst rate, Kinetic Score, and Morphology score (BL_M_K). The IVP experiments were performed using oocytes aspirated from slaughterhouse ovaries from Holstein cows, fertilized with semen from 123 Holstein bulls. A total of 77 in vitro fertilization (IVF) experiments with 163 records (different IVF groups) were available for the analysis. The results indicate low to moderate heritability and moderate to high repeatability estimates for bull effects on IVP performance t...
Source: Animal Reproduction Science - February 28, 2024 Category: Zoology Authors: G Gebreyesus J B Secher M S Lund K Kupisiewicz M Ivask T Hallap P P ärn G Su Source Type: research

Reproductive tract morphology and symmetry of farmed common eland (Tragelaphus oryx) bulls, and their relationship with secondary sexual traits and social rank
This study provides basic information about the reproductive tract morphology, symmetry, and their relationships with secondary sexual traits, social rank, and temperament in common eland. Six eland males (2-2.5 years old; 203 ± 20 kg) were utilised for the study. Social rank, body weight and body condition score, temperament score, and horn size were determined before the animals were culled, and their reproductive tracts were collected for morphometric and histological evaluation. Results indicate relatively low asymmetry in bilateral reproductive tract components. Individual traits of eland bulls such as age, body weig...
Source: Animal Reproduction Science - February 28, 2024 Category: Zoology Authors: Jerico Consolacion Francisco Ceacero Abubakar Sadiq Musa Veit Ny Radim Kotrba Josef Illek Mi ša Škorič Tersia Needham Source Type: research

Sensory and physicochemical characteristics of Japanese jidori chicken (Choshu ‐Kurokashiwa) and broiler thigh meat: Effect of cooking procedure
This study aimed to investigate the effects of various cooking procedures on the sensory and physicochemical properties of Japanesejidori chicken (Choshu-Kurokashiwa) and broiler thigh meat. Thigh meats were cooked using three different procedures: grilling, boiling, and deep-frying. Subsequently, we performed sensory evaluation by a trained panel and instrumental analysis on both raw and cooked meat to determine changes in pH, shear force value, cooking loss, nucleotide metabolite contents, and proximate, free amino acid, and fatty acid composition. From the sensory evaluation, “springiness” and “chewiness” were f...
Source: Animal Science Journal - February 28, 2024 Category: Zoology Authors: Shohei Murata, Keisuke Sasaki Tags: RESEARCH ARTICLE Source Type: research

Prolonged cold-preservation of domestic cat ovarian tissue is improved by extracellular solution but impaired by the fragmentation of ovary
Anim Reprod Sci. 2024 Feb 10;263:107431. doi: 10.1016/j.anireprosci.2024.107431. Online ahead of print.ABSTRACTFor domestic cats ovaries, recommended cold-storage limit is 24 h in Phosphate Buffered Saline (PBS) or Dulbecco`s PBS (DPBS). Here, we attempted to verify wheatear cat ovaries may benefit from more complex solutions during prolonged cold-storage (>24 h). First, the preservation capabilities of extracellular (SP+), intracellular (UW) solutions and DPBS supplemented with glutathione (DPBS+GSH) were compared using ovary fragments from the same ovary (n=10). Intact ovary stored in DPBS served as a control. Ovaries...
Source: Animal Reproduction Science - February 27, 2024 Category: Zoology Authors: Olga Rodak Manuel David Peris-Diaz Piotr Dzi ęgiel Aleksandra Piotrowska Agnieszka Partyka Wojciech Ni żański Source Type: research

An updated review on the application of proteomics to explore sperm cryoinjury mechanisms in livestock animals
Anim Reprod Sci. 2024 Feb 21;263:107441. doi: 10.1016/j.anireprosci.2024.107441. Online ahead of print.ABSTRACTThis comprehensive review critically examines the application of proteomics in understanding sperm cryoinjury mechanisms in livestock animals, in the context of the widespread use of semen cryopreservation for genetic conservation. Despite its global adoption, cryopreservation often detrimentally affects sperm quality and fertility due to cryoinjuries. These injuries primarily arise from ice crystal formation, osmotic shifts, oxidative stress, and the reorganization of membrane proteins and lipids during freezing ...
Source: Animal Reproduction Science - February 27, 2024 Category: Zoology Authors: Allai Larbi Chunyan Li Guobo Quan Source Type: research

A method of calculating weighted values of objective traits for BLUP of breeding values to achieve relative desired changes
AbstractA method of calculating weighted values for objective traits from the phenotypic records of all animals in a population was devised as an alternative to the conventional method of calculating weighted values from a family selection index. The genetic improvement of this method was verified by Monte Carlo computer simulation. A base population consisting of 10 males and 50 females, and five separate generations, other than the base population that had been randomly selected, was bred for two traits with different heritabilities. The breeding values of animals in generation five were estimated using the bivariate BLU...
Source: Animal Science Journal - February 27, 2024 Category: Zoology Authors: Masahiro Satoh Tags: RESEARCH ARTICLE Source Type: research

Dietary fat and high energy density diet: Influence on intestinal health, oxidative stress  and performance of weaned piglets
AbstractThe utilization of dietary components to support gut function and the health of young animals is an important factor for improved performance. The influence of high dietary fat levels in a low  or high energy density diet on the performance of weaned piglets in relation to intestinal absorptive function, amino acid utilization, oxidative stress, and microbial metabolites was assessed in this study. The study examined the effect of two different diets containing either a low energy densit y/high-fat level or a high energy density/high-fat level. A total of 16 healthy weaners (9.60 ± 0.13 kg) were allocated t...
Source: Journal of Animal Physiology and Animal Nutrition - February 26, 2024 Category: Zoology Authors: Tolulope Adebowale, Qian Jiang, Kang Yao Tags: ORIGINAL ARTICLE Source Type: research

Influence of photoperiod and exogenous melatonin on testis morpho-physiology of sexually mature guinea fowl (Numida meleagris)
Anim Reprod Sci. 2024 Jan 10;263:107410. doi: 10.1016/j.anireprosci.2024.107410. Online ahead of print.ABSTRACTThe biological effects of simulated photoperiod and melatonin on the control of reproduction of guinea fowls (Numida meleagris) are not well understood. Herein, thirty (30) sexually mature guinea fowl cocks were randomly assigned to 1-6 groups (n = 5) and subjected to different photoperiodic regimes in the presence or absence of exogenous melatonin (Mel; 1 BW/day, i/m) for eight weeks. Testes of the euthanized cocks were processed for gross morphology, histological, histochemical, and oxidative stress markers. Tes...
Source: Animal Reproduction Science - February 25, 2024 Category: Zoology Authors: Innocent J Gosomji Umar M Bello Tavershima Dzenda Abdullahi Baso Augustine Arukwe Tom A Aire Source Type: research

Influence of photoperiod and exogenous melatonin on testis morpho-physiology of sexually mature guinea fowl (Numida meleagris)
Anim Reprod Sci. 2024 Jan 10;263:107410. doi: 10.1016/j.anireprosci.2024.107410. Online ahead of print.ABSTRACTThe biological effects of simulated photoperiod and melatonin on the control of reproduction of guinea fowls (Numida meleagris) are not well understood. Herein, thirty (30) sexually mature guinea fowl cocks were randomly assigned to 1-6 groups (n = 5) and subjected to different photoperiodic regimes in the presence or absence of exogenous melatonin (Mel; 1 BW/day, i/m) for eight weeks. Testes of the euthanized cocks were processed for gross morphology, histological, histochemical, and oxidative stress markers. Tes...
Source: Animal Reproduction Science - February 25, 2024 Category: Zoology Authors: Innocent J Gosomji Umar M Bello Tavershima Dzenda Abdullahi Baso Augustine Arukwe Tom A Aire Source Type: research

Influence of photoperiod and exogenous melatonin on testis morpho-physiology of sexually mature guinea fowl (Numida meleagris)
Anim Reprod Sci. 2024 Jan 10;263:107410. doi: 10.1016/j.anireprosci.2024.107410. Online ahead of print.ABSTRACTThe biological effects of simulated photoperiod and melatonin on the control of reproduction of guinea fowls (Numida meleagris) are not well understood. Herein, thirty (30) sexually mature guinea fowl cocks were randomly assigned to 1-6 groups (n = 5) and subjected to different photoperiodic regimes in the presence or absence of exogenous melatonin (Mel; 1 BW/day, i/m) for eight weeks. Testes of the euthanized cocks were processed for gross morphology, histological, histochemical, and oxidative stress markers. Tes...
Source: Animal Reproduction Science - February 25, 2024 Category: Zoology Authors: Innocent J Gosomji Umar M Bello Tavershima Dzenda Abdullahi Baso Augustine Arukwe Tom A Aire Source Type: research

Prediction of response to truncated selection based on BLUP of breeding values and its prediction accuracy
AbstractThree methods of predicting the response to truncated selection based on BLUP of breeding values (BVs) were compared under conditions in which the phenotypic values for the progenies of selected animals were not available. The following methods were used to predict the response to selection: (1) based on the mean of estimated breeding values (EBV) in the candidate population for selection ( ∆g1$$ \Delta {\mathrm{g}}_1 $$), (2) based on the variance of EBV in the candidate population for selection (∆g2$$ \Delta {\mathrm{g}}_2 $$), and (3) based on diagonal elements of the inverse matrix on the left-hand side of ...
Source: Animal Science Journal - February 25, 2024 Category: Zoology Authors: Masahiro Satoh Tags: SHORT COMMUNICATION Source Type: research