Factorial and discriminant analysis on non-carcass components of Berganês lambs from different sexual classes and crossbreeding

Author(s):  
José Renaldo Vilar da Silva Filho ◽  
João Bandeira de Moura Neto ◽  
Lays Thayse Alves dos Santos ◽  
Clebson Oliveira Ferreira ◽  
Rafael Torres de Souza Rodrigues ◽  
...  

Abstract The aim of this study was to evaluate the non-carcass components (NCC) of Berganês ecotype lambs of different sexual classes and genotypes using univariate and multivariate statistics, carrying out two experimental trials. In order to evaluate the effects of the sexual class, non-castrated males (BNC), castrated males (BC) and females (BF) of Berganês ecotype lambs were used, with mean initial body weight of 27 ± 3.1 kg. To evaluate crossbreeding, non-castrated male lambs of the genotypes Berganês (BG), Berganês × Santa Inês (BSI) and Berganês × Dorper (BD) were used, as well as the control Dorper × Santa Inês (DSI), all with mean initial body weight of 28 ± 3.8 kg. The weight and yield of the total by-products was higher for BNC. Regarding the genotype, BSI showed higher weight and yield of internal fat, but the weight and yield of the total by-products was higher for BG and BD. In factorial analysis (FA), the NCC, more correlated with empty body weight (EBW) and total weight gain (TWG), showed higher eigenvectors for factor 1. For factor 2, the weights and yields of internal fat and total viscera obtained higher eigenvectors. The discriminant analysis (DA) classified 100% of individuals in their respective sexes and genotypes. Therefore, the FA indicated that, among the NCC evaluated, the weights of liver, kidneys, GIT, skin and feets are determinant for obtaining EBW and TWG. The classification achieved by the DA indicates that the sexual classes and genotypes are heterogeneous.

Animals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 587
Author(s):  
Rodrigo Arias ◽  
Cristobal Santa-Cruz ◽  
Alejandro Velásquez

High potency growth promoter implants (HGPs) are widely used under feedlot conditions but there are few reports under grazing conditions. The study’s goal was to assess the effect of HGPs on the average daily gain of steers fattened in pastures. A total of 57 crossbreed steers (Hereford × Angus)—initial body weight = 356.65 kg ± 5.04 (SEM)—were randomly allocated to one of three groups: Control without HGP (n = 19), Synovex group (n = 17), and Revalor group (n = 21). The fattening period was 67 days using paddocks of Lolium perenne L. and Trifolium repens L. Body weight was recorded three times in the period. The data were analyzed using an analysis of covariance with a level of significance of 5%. The average daily gain (ADG) (1.55 ± 0.07 and 1.48 ± 0.09 kg/d) and the total weight gain (103.4 ± 4.9 and 99.2 ± 5.8 kg) were similar for Revalor and Synovex, respectively (p > 0.05). Moreover, HGP groups showed higher ADG and total weight gain (p < 0.01) than the control group (ADG = 0.93 ± 0.08 kg/d and a total weight gain of 62.2 ± 5.2 kg). Final body weights were 527.8 ± 8.5 kg and 512.2 ± 9.9 kg for Revalor and Synovex, respectively; and 479.9 ± 10.1 kg for Control. In conclusion, grazing-finished steers showed better performance when high potency HGPs were used, improving the ADG and final live body weight, generating a marginal income that justifies the use of the technology under grazing conditions


2021 ◽  
Vol 48 (1) ◽  
pp. 33-46
Author(s):  
R. A. Vandu ◽  
Y. P. Mbaya ◽  
R. J. Wafar ◽  
D. I. Ndubuisi

This study was conducted to investigate the effect of fermented Jatropha seed meal on growth and reproductive characteristics of rabbit bucks. Thirty (30) (twelve weeks old) cross bred rabbits (American chinchilla × New Zealand white) were used for the experiment. The rabbits were randomly assigned to five dietary treatments replicated three times with two rabbits per replicate in a completely randomised design (CRD). The five experimental diets were compounded using fermented Jatropha seed meal (FJSM) to replace soya bean meal at 0, 25, 50, 75 and 100%, respectively. The experiment lasted for 12 weeks. Data collected during the feeding trial include final body weight, total weight gain, total feed intake, feed conversion ratio and mortality. At the end of the feeding trial, 3 bucks per treatment were slaughtered and the reproductive organs dissected out for testicular and epididymal morphometrics as well as gonadal sperm assessment. All the data collected during the experiment were subjected to analysis of variance. The result of the growth performance showed that final body weights and total weight gain were highly (P<0.001) influenced by the replacement levels of fermented Jatropha seed meal. Final body weight of buck decreased as the level FJSM increased in the diets. Among the fermented Jatropha seed meal-based diets, rabbit fed T2 (25% FJSM) recorded significant higher (P<0.05) final body weight (2011.10g) than the other group. The results of epididymal and testicular characteristics as well as testicular sperm characteristics were significantly (P<0.001) influenced by replacement levels of FJSM in the diets. It was concluded from this study that feeding rabbit buck with replacement levels of fermented Jatropha seed meal beyond 25% adversely affected growth and reproductive performance. Therefore, it is recommended that fermented Jatropha seed meal at 25% replacement levels can be used in rabbit diets.     Cette étude a été menée pour étudier l'effet de la farine fermentée de graines de Jatropha sur la croissance et les caractéristiques reproductrices des mâles lapins. Trente (30) (douze semaines) lapins croisés (chinchilla américain × Nouvelle-Zélande) ont été utilisés pour l'expérience. Les lapins ont été assignés au hasard à cinq traitements diététiques répliqués trois fois avec deux lapins par réplique dans une conception complètement randomisée (le 'CRD'). Les cinq régimes expérimentaux ont été composés utilisant le repas fermenté de graine de Jatropha (le 'FJSM') pour remplacer le repas de haricot de soja à 0, 25, 50, 75 et 100%, respectivement. L'expérience a duré 12 semaines. Les données recueillies au cours del'essai d'alimentation comprennent le poids corporel final, le gain de poids total, la consommation totale d'aliments pour animaux, le ratio de conversion des aliments pour animaux et la mortalité. À la fin de l'essai d'alimentation, 3 dollars par traitement ont été abattus et les organes reproducteurs disséqués pour l'évaluation testiculaire et épididymalmorphométrique ainsi que l'évaluation du sperme gonadal. Toutes les données recueillies au cours de l'expérience ont fait l'objet d'une analyse de la variance. Le résultat de la performance de croissance a prouvé que les poids corporels finaux et le gain total de poids ont été fortement (P<0.001) influencés par les niveaux de remplacement du repas fermenté de graine de Jatropha. Le poids corporel final de buck a diminué pendant que le niveau FJSM augmentait dans les régimes. Parmi les régimes fermentés à base de farine de graines de Jatropha, le T2 nourri au lapin (25 % de 'FJSM') a enregistré un poids corporel final (P<0,05) plus élevé (2011,10 g) que l'autre groupe. Les résultats des caractéristiques épididymales et testiculaires aussi bien que des caractéristiques testiculaires de sperme ont été sensiblement (P<0.001) influencés par des niveaux de remplacement de FJSM dans les régimes. Il a été conclu de cette étude que l'alimentation de l'argent du lapin avec des niveaux de remplacement de farine fermentée de graines de Jatropha au-delà de 25% a nui à la croissance et la performance reproductive. Par conséquent, il est recommandé que le repas fermenté de graine de Jatropha aux niveaux de remplacement de 25% puisse être employé dans des régimes de lapin.


2021 ◽  
Vol 15 (1) ◽  
pp. 151-155
Author(s):  
Abdul Muumin Sadick ◽  
Iddrisu Mubarik ◽  
Dennis Kodzo Awalime ◽  
Rebecca Akumbilim ◽  
Philip Larweh ◽  
...  

One hundred and twenty (120) 16 weeks old White Leghorn layer breeds were used for the study. The objective of the study was to determine effect of photoperiod on layer chicken. The research was carried out at the Poultry Section of the Animal farm of the Department of Animal Science Education, Akenten Appiah-Menka University of Skills Training and Entrepreneurial Development, Mampong. Four treatments made up of 12 hours of light, 14 hours of light, 16 hours of light and 18 hours of light were used for the study. Each treatment was replicated three times with 10 birds per replicate in a Completely Randomized Design. Birds were exposed equally to common daylight and in the evenings, lights were turned on at specified periods. Growth parameters measured were initial body weight, daily feed intake, daily weight gain and final body weight. Egg traits measured were egg weight, albumen height, yolk color and yolk weight. The data collected were analyzed using General Linear Model procedure of Statistical Analysis System. Results from the study indicated that, varied photoperiod regimes had no significant (P>0.05) effect on initial body weight, daily feed intake but had significant (P<0.05) effect on daily weight gain and final body weight of growth traits. Photoperiod had no significant (P>0.05) effect on the egg characteristics of the white Leghorn layer bird. It was concluded from the study that, increasing photoperiod had no positive effect on growth and egg characteristics of the white Leghorn layer.


2015 ◽  
Vol 48 (7) ◽  
pp. 912-918 ◽  
Author(s):  
Frances A. Carter ◽  
Joseph M. Boden ◽  
Jennifer Jordan ◽  
Virginia V.W. McIntosh ◽  
Cynthia M. Bulik ◽  
...  

2014 ◽  
Vol 54 (9) ◽  
pp. 1502 ◽  
Author(s):  
Musharraf Ahmad Anjum ◽  
Shaukat Ali Bhatti ◽  
Muhammad Sarwar ◽  
Ghulam Muhammad ◽  
Muhammad Jamil Basra

Kajli, is one of the most beautiful sheep breeds of Pakistan. Because of their beauty, Kajli lambs are sold at a higher price than those of other breeds with similar weight. With the increasing trend in commercial livestock farming, young Kajli lambs are purchased from the open market and reared up to Eid-ul-Adha (The Muslim Sacrificial Day). Information on feeding cost and growth performance on artificial rearing is important for the breed lovers and for a commercial enterprise. The present study aimed at generating basic information on feeding cost and growth performance of Kajli lambs offered milk replacer, cow-milk, and buffalo-milk, in comparison with those suckling directly from their dams. Fifty-six healthy Kajli lambs both male and female (with equal sex ratio) born at the Livestock Experimental Station, Khushab, Punjab, Pakistan during spring 2013 remained with their mothers for 1 week and were then divided into four groups of 14 animals each. Lambs in Group I were allowed to suckle their dams ad libitum, twice daily until 8 weeks and then once daily from 9 to 12 weeks. Lambs were weighed before and after suckling to calculate milk consumption. Lambs in the other three treatments were offered buffalo-milk, cow-milk or milk replacer at the rate of 10% of bodyweight until the 8th week and then gradually reduced to zero by the end of the 12th week. All lambs were offered starter ration from the 5th week of age in individual pens. The data on milk and starter intake, weekly bodyweight and blood glucose were analysed through MIXED procedures of SAS using repeated-measures analysis, and average daily gain (ADG), total weight gain, weaning weight and feeding cost were analysed using a completely randomised design. Least square means of ADG (g/day) and total weight gain (kg) were similar (P > 0.05) in direct suckling lambs and lambs offered buffalo-milk (175 and 151, and 14.5 and 12.5, respectively), and were higher (P < 0.05) than those offered cow-milk (118 and 10.4) or milk replacer (94 and 7.7). Feeding cost (per kg of liveweight) was highest (PKR 535) in lambs fed milk replacer and was lower (P > 0.05) in the other three groups. The cost of rearing lambs on buffalo-milk tended to be lower (PKR 375) than those offered cow-milk. In the absence of ewe’s milk, rearing Kajli lambs on buffalo-milk during the pre-weaning period therefore seems to be a better alternative.


2021 ◽  
Vol 45 (1) ◽  
pp. 27
Author(s):  
Engkus Ainul Yakin ◽  
Sri Sukaryani ◽  
Catur Suci Purwati

This experiment was aimed to evaluate the effect of fermented cocoa pod as feed for Bligon goats. Sixteen Bligon goat with a body weight of 11-13 kg were put into individual cages which were equipped with feed and drink containers. The study design used a randomized block design, where initial body weight in as peragam with four treatments and four replications. Fermented cocoa pod used Trametes versicolor. The experimental treatments were T1= 30% of fresh king grass + 50% of dried king grass + 20% of concentrate; T2= 30% of fresh king grass + 30% of dried king grass + 40% of concentrate; T3= 30% of fresh king grass + 30% of cocoa pod + 40% of concentrate; and T4= 30% of fresh king grass + 30% of cocoa pod fermented + 40% of concentrate. Observed variables were feed intake, body weight gain and feed conversion. The result showed that fermented cocoa pod at the level of 30% had higher (P<0.05) infeed intake (560.33 g day-1), body weight gain (101.79 g head-1day-1), and feed conversion (5.50) compared to other treatments. The conclusion of this study were the use of 30% cocoa pod fermented in the ration showed the best body weight gain and feed conversion on Bligon goat performance. 


2019 ◽  
Vol 32 (2) ◽  
pp. 150-159
Author(s):  
Abass N. Khalaf ◽  
Hanaa A. Al-Galbi

This study was conducted in one of the private fields in Maysan province to study the effect of adding a different level of bentonite to the lamb diets on the performance of lambs. The study included (18) male Arabi lambs weighted 24.5±1.22 kg and lasted 120 days. Lambs were taken after weaning at the age of 3 to 4 months. They were randomly divided into six groups. The diet was provided on the basis of 3% of live body weight. The diets of the trial included (A) a basic diet of 50% concentrated fodder + 50 alfalfa without any addition. (B) A plus 2% bentonite/ dry matter. (C) A plus 4% bentonite/ dry matter. Treatment (D) a diet of 100% concentrated feed + hay ad libitum (basic diet 2) and without any addition. (E) D plus 2% bentonite. (F) D plus 4% bentonite. The diet significantly affected the average final weight and total weight gain in favor of lambs fed treatment D (100% concentrated feed) with average final weight and total weight gain 46.57 and 22.11 kg, respectively. The addition of bentonite improved the rates of the rate of total weight gain is 17.71, 20.85 and 19.50 kg without adding and adding bentonite (2%) and bentonite (4%), respectively. The diet significantly affected the digestion rate of DM, OM, CP, EE, and NDF. Their digestion coefficients of 100% concentrate group were (75.98, 80.70, 80.09, 65.31 and 31.67%, respectively). 50% concentrated fodder (70.26, 71.53, 76.22, 45.47 and 27.36%, respectively).


2019 ◽  
Vol 27 (1) ◽  
pp. 30-38
Author(s):  
Florianne O. L. Vehmeijer ◽  
Sangeeta R. Balkaran ◽  
Susana Santos ◽  
Romy Gaillard ◽  
Janine F. Felix ◽  
...  

Abstract Background Psychological distress and inappropriate or excessive weight gain are common in pregnancy and are associated with adverse maternal and offspring outcomes. Psychological well-being and weight status of women during pregnancy might be interrelated. We aimed to examine whether psychological distress during pregnancy is associated with gestational weight gain. Method In a population-based cohort of 3393 pregnant women, information about psychological distress, depressive and anxiety symptoms was assessed at 20 weeks of gestation using the Brief Symptom Inventory questionnaire. Weight was repeatedly measured during pregnancy and obtained by questionnaire before and after pregnancy. Linear regression and multinomial logistic regression models were used. Weight gain in the second half of pregnancy, total weight gain, and the risks of inadequate and excessive total weight gain were the main outcome measures. Results In total, 7.0% of all women experienced psychological distress. Overall psychological distress and anxiety were associated with lower weight gain in the second half of pregnancy (differences − 1.00 kg (95% confidence interval (CI) − 1.62, − 0.37) and − 0.68 kg (95% CI - 1.24, -0.11), respectively). These associations fully attenuated into non-significance after taking account for socio-demographic variables. Similar results were observed for total weight gain. Only women with anxiety symptoms had, independently of potential confounders, a lower risk of excessive weight gain (odds ratio (OR) 0.61 (95% CI 0.48, 0.91)). Conclusions In this large prospective cohort study, the observed associations of psychological distress with weight gain during pregnancy seem to be largely explained by common socio-demographic factors.


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