scholarly journals Morphometric Evaluation of Phenotypic Groups of Creole Cattle of Southern Ecuador

Diversity ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 221 ◽  
Author(s):  
Edgar Lenin Aguirre-Riofrio ◽  
Rodrigo Medardo Abad-Guamán ◽  
Melania de Lourdes Uchuari-Pauta
Keyword(s):  
Maximum Likelihood ◽  
Live Weight ◽  
Restricted Maximum Likelihood ◽  
Morphometric Characteristics ◽  
Body Depth ◽  
Dual Purpose ◽  
The Andes ◽  
Economic Support ◽  
Significant Difference ◽  
Creole Cattle

The breeding of creole cattle from the southern region of Ecuador, also known as Criollo Lojano, is a source of economic support and work for the communities located in the remote areas of the Andes mountains in this region. These cattle are grouped into four biotypes based on their phenotypic characteristics: Negro Lojano, Encerado, Colorado, and Cajamarca or Pintado. This study analyzes the morphometric variability of these creole cattle using least squares means (LSM) and restricted maximum likelihood Restricted Maximum Likelihood (REML) variance components. The evaluation parameters used to characterize these cattle were live weight plus 15 morphometric characteristics and nine morphometric indexes. The measurements came from 151 adult animals (28 male and 123 females). With the exception of Height at Withers (P = 0.06), the other morphometric characteristics do not show significant difference among these creole biotypes. Sexual dimorphism was found in live weight, thoracic circumference, height at withers, chest width, length of thorax, length of body, depth of thorax, depth of abdomen, length of head, and length of horns (P < 0.05). The adult Creole Lojano has an average live weight of 288 ± 12.9 kg (mean ± standard error), The Cephalic index is 45.6, the Corporal index is 115.9, the Pelvic index is 90.5, the Thoracic index is 58.3, the Proportionality index is 62.6, the Thoracic Capacity index is 2.1, the Lower Leg–Thoracic index is 9.9, the Transverse Pelvic index is 34.7, and the Pelvic Length index is 38.4. This creole bovine breed presents 4 biotypes that are similar; there are differences in the analysis with respect to sex (males are higher in 10 of the 16 characteristics analyzed); and on the basis of the indexes, this animal is small, has a triangular head, is longilinear with a long and narrow hip. It is a dual-purpose milk type with the exception of the Colorado biotype which is a dual purpose meat type.

Effect of Supplementation of Multi Enzymes on Production Performance and Egg Quality Traits in White Leghorn Layers

2016 ◽  
Vol 12 (2) ◽  
Author(s):  
C. Pandian ◽  
A. Sundaresan ◽  
A. V. Omprakash
Keyword(s):  
Egg Production ◽  
Egg Quality ◽  
Live Weight ◽  
Economic Benefits ◽  
Production Performance ◽  
Feed Consumption ◽  
Quality Traits ◽  
White Leghorn ◽  
Significant Difference ◽  
Enzyme Supplementation

The present study was conducted to assess the effect of supplementation of Multi-enzymes with lysophospholipids on production performance of pure line White Leghorn layers. Body weights before and after the experiment did not differ significantly across the experimental diets. Irrespective of the dietary treatments, the birds gained 3.83 per cent of live weight relative to its initial body weight. Mean per cent Hen housed egg production was significantly (Pis less than 0.05) higher in diet supplemented with 0.10 MEC-L than other groups. Mean egg weight and average daily feed consumption during 25 to 35 weeks of age indicated no significant effect of enzyme supplementation. Average daily feed consumption per bird in control, 0.05 % and 0.1% multi-enzyme supplemented groups was 108.13, 105.66 and 107.67 g respectively and birds offered control diet recorded numerically more feed intake than enzyme supplemented groups. Comparatively low feed per egg was observed in 0.10 per cent group followed by 0.05 per cent group which offers economic benefits than control diets. However, the egg quality traits between different dietary enzyme supplementation groups showed no significant difference.

scholarly journals Reduction of body-weight gain enhances in vitro embryo production in overfed superovulated dairy heifers

Reproduction ◽  
2006 ◽  
Vol 131 (4) ◽  
pp. 783-794 ◽  
Author(s):  
S Freret ◽  
B Grimard ◽  
A A Ponter ◽  
C Joly ◽  
C Ponsart ◽  
...  
Keyword(s):  
Weight Gain ◽  
Dietary Intake ◽  
Live Weight ◽  
Reproductive Hormones ◽  
Embryo Production ◽  
Live Weight Gain ◽  
Dairy Heifers ◽  
Period 2 ◽  
Significant Difference

The aim of our study was to test whether a reduction in dietary intake could improve in vitro embryo production in superovulated overfed dairy heifers. Cumulus–oocyte complexes of 16 Prim’ Holstein heifers (14 ± 1 months old) were collected by ovum pick-up (OPU), every 2 weeks following superovulation treatment with 250 μg FSH, before being matured and fertilized in vitro. Embryos were cultured in Synthetic Oviduct Fluid medium for 7 days. Heifers were fed with hay, soybean meal, barley, minerals and vitamins. From OPU 1 to 4 (period 1), all heifers received individually for 8 weeks a diet formulated for a 1000 g/day live-weight gain. From OPU 5 to 8 (period 2), the heifers were allocated to one of two diets (1000 or 600 g/day) for 8 weeks. Heifers’ growth rates were monitored and plasma concentrations of metabolites, metabolic and reproductive hormones were measured each week. Mean live-weight gain observed during period 1 was 950 ± 80 g/day (n = 16). In period 2 it was 730 ± 70 (n = 8) and 1300 ± 70 g/day (n = 8) for restricted and overfed groups respectively. When comparing period 1 and period 2 within groups, significant differences were found. In the restricted group, a higher blastocyst rate, greater proportions of grade 1–3 and grade 1 embryos, associated with higher estradiol at OPU and lower glucose and β-hydroxybutyrate, were observed in period 2 compared with period 1. Moreover, after 6 weeks of dietary restriction (OPU 7), numbers of day 7 total embryos, blastocysts and grade 1–3 embryos had significantly increased. On the contrary, in the overfed group, we observed more <8 mm follicles 2 days before superovulation treatment, higher insulin and IGF-I and lower nonesterified fatty acids in period 2 compared with period 1 (no significant difference between periods for embryo production). After 6 weeks of 1300 g/day live-weight gain (OPU 7), embryo production began to decrease. Whatever the group, oocyte collection did not differ between period 1 and 2. These data suggest that following a period of overfeeding, a short-term dietary intake restriction (6 weeks in our study) may improve blastocyst production and embryo quality when they are low. However, nutritional recommendations aiming to optimize both follicular growth and embryonic development may be different.

scholarly journals PSX-7 Effect of varying levels of hempseed meal supplementation on animal performance, rumen fermentation, and blood metabolites of growing meat goats

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 459-460
Author(s):  
Frank W Abrahamsen ◽  
Nar Gurung ◽  
Woubit Abdela ◽  
Gopal Reddy ◽  
Kim Mullenix
Keyword(s):  
Mixed Model ◽  
Average Daily Gain ◽  
Live Weight ◽  
Blood Chemistry ◽  
Optimal Level ◽  
Rumen Fermentation ◽  
Serum Glucose ◽  
Mixed Model Analysis ◽  
Meat Goats ◽  
Significant Difference

Abstract Hempseed meal (HSM) is a byproduct of hemp oil production and is high in crude protein, fiber, and fat, making it a potential feedstuff for ruminants. The objective of this study was to evaluate the effect of HSM supplementation on growth performance, rumen fermentation and blood chemistry profile of growing meat goats. Forty castrated, Boer cross goats were randomly assigned to one of the four treatments (n = 10): control, 10%, 20%, and 30% HSM supplementation. Data collected over a period of a 60-day feeding trial were analyzed utilizing the mixed model analysis function of SYSTAT, version 13. The result revealed total live weight gain decreased with the increasing levels of HSM supplementation 10.75, 9.53, 8.48, and 7.80 kg, for 0, 10, 20, and 30%, respectively. Average daily gain followed the same trend 0.179, 0.159, 0.141, and 0.13 kg, with a significant difference (P &lt; 0.05) observed between the control and 30 % supplementation. Conversely, feed to gain ratio increased with the increasing levels of supplementation 9.0, 10.2, 11.9, 12.2, likewise a significant difference was observed (P &lt; 0.05) between the control and 30% supplementation. Acetic, propionic, butyric, valeric, iso-valeric, and iso-butyric acid concentrations as well as the total VFA concentration decreased significantly (P &lt; 0.05) with the increasing level of supplementation. Acetic to propionic acid ratios increased with increasing level of supplementation 3.43, 4.36, 4.52, and 4.59, significant differences (P &lt; 0.05) were observed between control-20% and 30% HSM group. Serum glucose concentration decreased with an increasing rate of HSM supplementation while BUN concentration increased with no significant differences. These findings provide new insights into the feeding value of HSM for meat goats; however, further research needs to be conducted to determine the optimal level of supplementation.

Biological and chemical features of Poltava Meat breed pigs bacon depending on genotype

2021 ◽  
pp. 74-80
Author(s):  
N. Garskaya ◽  
L. Peretyatko
Keyword(s):  
Subcutaneous Tissue ◽  
Morphological Structure ◽  
Live Weight ◽  
Fatty Degeneration ◽  
Fat Cells ◽  
Breeding Lines ◽  
Meat Content ◽  
Group I ◽  
Significant Difference ◽  
Selection For

The research goal is to carry out comprehensive studies to define the biological and chemical characteristics of the young Poltava Meat Breed boars’ bacon for further work with existing genotypes and creating new ones.Materials and methods. The research was carried out on bacon samples taken from Poltava Meat Breed boars of different genotypes during the «control slaughter» at the age of reaching the live weight of 100 kg. Purebred Poltava Meat Breed boars were divided into two groups according to the principle of paired analogs: the group I (control) contained animals of «clean» breeding lines (16 heads), and the group II (experimental) contained animals with 12,5% of the Finnish Landrace blood (14 heads). The thickness of the bacon, its morphological structure and its chemical features were studied. All the results obtained were then processed by statistical methods.Results. It was found that Poltava Meat Breed boars, regardless of the genotype, had bacon thickness values below the Poltava Meat Breed target standard after reaching the live weight of 100 kg, with very low variability of the indicator (1,05–1,69%). However, there was no significant difference between the groups. During the morphological study of the samples, qualitative differences in the bacon of animals from different groups were noted. In the first group, the subcutaneous tissue (bacon) is subject to more pronounced destructive changes due to the intensified process of fatty degeneration. The fat cells of animals with Finnish Landrace blood were slightly smaller, but no significant difference between the area of fat cells in boars of different genotypes was found. The variability of morphological parameters in both groups was average (23,91% and 16,23%). The infusion of Finnish Landrace blood to the Poltava Meat Breed boars led to a change in the chemical composition of bacon, such as: an increase in the amount of moisture by 8,58% (p≤0,01), protein by 3,62% (p≤0,01), a decrease in the amount of fat by 9,25% (p≤0,01), to a decrease in the saponification number by 8,36% (p≤0,01) and the iodine number by 10,48% (p≤0,01).Conclusion. The bacon of Poltava Meat Breed boars is characterized by biological and chemical features due to both species and genotype. The established features of the bacon of Poltava Meat Breed boars indicate a significant decrease in its quality in the case of Finnish Landrace blood infusion. Intensive selection for meat content of Poltava Meat Breed pigs leads to a significant decrease in the thickness of the bacon and excessive selection pressure.

Bias in heritability estimates from genomic restricted maximum likelihood methods under different genotyping strategies

2018 ◽  
Vol 136 (1) ◽  
pp. 40-50 ◽  
Author(s):  
Alberto Cesarani ◽  
Ivan Pocrnic ◽  
Nicolò P. P. Macciotta ◽  
Breno O. Fragomeni ◽  
Ignacy Misztal ◽  
...  
Keyword(s):  
Maximum Likelihood ◽  
Restricted Maximum Likelihood ◽  
Likelihood Methods ◽  
Maximum Likelihood Methods ◽  
Heritability Estimates
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