scholarly journals Crossing system application and its effect on lambs growth traits

2015 ◽  
Vol 31 (4) ◽  
pp. 505-514 ◽  
Author(s):  
V. Caro-Petrovic ◽  
M.P. Petrovic ◽  
Z.Z. Ilic ◽  
M.M. Petrovic ◽  
D. Ruzic-Muslic ◽  
...  
Keyword(s):  
Body Weight ◽  
Genetic Distance ◽  
System Application ◽  
Combining Ability ◽  
Growth Traits ◽  
Average Daily Gain ◽  
A Value ◽  
Significant Difference ◽  
The Difference ◽  
Daily Gain

Success of crossing depends on the breeds used and the genetic distance among them, as well the combining ability of maternal and individual heterosis to make the proper choice of breeds employed in a crossing system. The aim of this study is to find the effect of genotype and crossing system on early weights and daily gain of lambs. The lambs of purebred Pirot Pramenka ( P) got the lowest body weight at birth, at 30 days, at 60 days and 90 days with a value of 3.65 kg, 9.48 kg, 14.99 kg and 21.96 kg while purebred Wurttemberg attained the highest body weight at birth of 4.48 kg. The lambs of three bred crossing (PxWxF) highest on BW30, BW60 and BW90 days. The results showed a highly significant difference on average daily gain (ADG) among genotypes (P ?0.01) except on the difference between W - PxW of which belongs to the lower border of significant level (P ?0.05). The highest difference on ADG was between P - PxWxF (105.950 g), wherein the lowest difference was between W- PxW (9.290 g). It can close that the attained value between pure bred Wurttemberg (W) and two-bred crossing (PxW) was almost equal. Genotype and crossing system have significant effect on body weight and average daily gain of lambs. Based on the results obtained, it shows an advantage effect of crossing system (PxWxF) when it comes on growth and daily gain of lambs.

scholarly journals Reserves to increase beef production and their use

2021 ◽  
Vol 37 ◽  
pp. 00005
Author(s):  
Leonid Kibkalo
Keyword(s):  
Body Weight ◽  
Average Daily Gain ◽  
The Body ◽  
Sales Revenue ◽  
The Third ◽  
Bull Calves ◽  
Morphological Composition ◽  
Special Diets ◽  
The Difference ◽  
Daily Gain

The studies were carried out on three groups of superreplacement heifers of the Simmental breed, which were impregnated at the body weight of 360 kg. In the first group there were 32 unimpregnated heifers, in the second – 28 heifers, in the third – 30 heifers. The heifers of the first group after growing at the age of 18 months were taken for meat. 56 heifers gave the crop. The heifers were transferred for reproduction, and the bull-calves were put on cultivation and further fattening. To obtain well-fed animals, special diets were made so that the average daily gain was at least 650-700 g. After calving, the cows of the second group were taken for meat, and the cows of the third group were put on a 3-month fattening, and then taken for meat. The pre-slaughter weight of animals of the first group was 52 kg lower than that of animals of the second group and 104.7 kg lower than that of the third group. The difference was statistically significant at P>0.999. The interior fat mass was higher in the carcasses of cows of the second group by 1.1 and 3.2 kg compared to the animals of the third and first groups. The carcass yield was almost at the same level slightly ahead of the animals of the first group. Their slaughter yield was 60.1%, in other groups – 58.8-59.6%. The meatiness ratio was slightly higher in animals of the first group. The carcass weight of the first-calf heifers of the third group was 27.4 kg higher than that of the second group. Compared to the first group, this figure is higher by 52.6 kg. Specific carcass meat weight of the animals of the third group was 82.75%, which is higher than in the second and first groups by 0.41-0.85%, respectively. Heavy cowbanes weighing 32.6 and 40.4 kg were obtained from the animals. The skin of animals of the third group was 3.5-21.6 dm2 larger in area than of the animals of the second and first groups. Feeder bull-calves (n=27) had a removable mass of 532 kg. Heavy (282.3 kg) carcasses of good morphological composition were obtained from them. The sales revenue from first-calf heifers (second group) was higher than fattened heifers by 10.4%, and in comparison with fattened animals after calving (third group) it was lower by 9.4%. From the sale of one cow with a crop, 2.9 times more profit was received than from the sale of a heifer.

scholarly journals Study on growth traits at weaning and yearling stages of indigenous and F1 crossbred buffalo in Bangladesh

2018 ◽  
Vol 3 (4) ◽  
pp. 499-503
Author(s):  
Md Shahjahan ◽  
Asma Khatun ◽  
Sumya Khatun ◽  
Md Mahbubul Hoque ◽  
Sohrab Hossain ◽  
...  
Keyword(s):  
Body Weight ◽  
Growth Traits ◽  
Average Daily Gain ◽  
Breeding Period ◽  
Gain Measurement ◽  
Body Weights ◽  
Two Stages ◽  
Additive Genetic Effects ◽  
Daily Gain ◽  
Imported Semen

This study was planned to clarify the variation of body weight and average daily gain traits in both indigenous and F1 crossbreed (Local×Mediterranean) buffalo at weaning (sixth month) and yearling stages (twelfth month). Data were collected from 33 indigenous and 35 F1 crossbred buffalo progeny during the period of 2011 to 2014 with intensive management system at Research and Development farm of Lal Teer Livestock Limited in Bangladesh. The gathered data were analyzed using general linear model (GLM) and independent sample t test. The effect of parity, sex, season and breeding year on body weight and average daily gain were observed where significant values found in breeding period (p <0.01) of crossbred buffalo for body weight. It might be the reason of crossbreeding to indigenous buffalo cows using imported semen with better genetic merit. The parity (p <0.05), season (p <0.05) and breeding period (p <0.01) were also significant for average daily gain measurement which suggesting environmental adaptability beside additive genetic effects. Body weights were measured at weaning and yearling stages for both local (113 to 195 kg) and F1 crossbred (144 to 220 kg) buffalo progeny to screen the elite offspring for the Genetic Farm and Bull station. Similarly, average daily gain observed 469 to 457 g and 600 to 506 g at the previously mentioned two stages for both local and F1 buffalos, respectively. It was observed that studied traits were comparatively better in F1 buffalo progeny than indigenous. The comparison of average daily weight gains between indigenous and F1 buffalos at weaning and yearling periods showed significant differences for body weight (p <0.001) and average daily gain (p <0.05), respectively. It is concluded that genetic gain might be possible in local buffalo population by grading up process which could switch the traditional buffalo rearing to commercial level as well as meeting the nutritional demand of country people.Asian J. Med. Biol. Res. December 2017, 3(4): 499-503

The relationships between pre- and post-weaning growth traits in lambs of Iranian fat-tailed sheep and their crosses with Corriedale and Targhee rams

1978 ◽  
Vol 26 (2) ◽  
pp. 185-192 ◽  
Author(s):  
A. Farid ◽  
M. Makarechian
Keyword(s):  
Body Weight ◽  
Birth Weight ◽  
Growth Traits ◽  
Average Daily Gain ◽  
High Growth ◽  
Negative Association ◽  
Food Conversion ◽  
Weaning Weight ◽  
Daily Gain ◽  
Total Gain

ABSTRACTThe pre-weaning records (birth weight, weaning weight and gain from birth to weaning) of 291 male and female lambs and the post-weaning records (body weight, feedlot gain and food conversion) of 136 male lambs were used to study relationships between different traits. The lambs were derived from three fat-tailed Iranian sheep breeds (Karakul, Mehraban and Naeini) and their crosses with Corriedale and Targhee rams. All lambs were weaned at 75 + 5 days of age and the males were fed in a feedlot for 100 days after weaning. Feedlot measurements were taken at 20-day intervals.Weaning weight and pre-weaning average daily gain showed positive and significant associations with birth weight. Birth weight, weaning weight and gain from birth to weaning were positively associated with body weight at subsequent ages in feedlot as well as with final weight (P<0·01). Birth weight, weaning weight and pre-weaning average daily gain were positively and significantly associated with total feedlot gain.Of the different traits, total gain during the first 20 days in feedlot (adjust period) had the lowest and total gain during the second 20 days had the highest association with total feedlot daily gain. There was no evidence that the heavier lambs at weaning and those showing high growth rate before weaning, were more efficient in the feedlot. Gain during the second 20-day period in the feedlot had a significant negative association with the total food conversion (unit food/unit gain) and therefore was a good predictor for food conversion.When the feedlot period was divided into two 40-day periods, it was found that gain during both had a significant negative association with the corresponding food conversion. A similar association was observed between total feedlot gain and food conversion, indicating that the rate and efficiency of gain improved simultaneously.

scholarly journals Effect of rbST on weight gain and fat cover of heifers in semiconfinement

2016 ◽  
Vol 9 (2) ◽  
pp. 43
Author(s):  
B. R. Fonseca ◽  
R. C. A. Berber ◽  
P. S. A. Moreira
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Animal Feed ◽  
Average Daily Gain ◽  
Live Weight ◽  
Final Body Weight ◽  
Significance Level ◽  
Brachiaria Ruziziensis ◽  
Significant Difference ◽  
Daily Gain

The objective of this study was to evaluate the effect of recombinant bovine somatotropin (rbST) on average total weight gain, average daily gain, muscularity and finishing. 24 Nellore heifers were used, up to two years of age and weighing 307.4 kg. The animals were semi-confined in Brachiaria ruziziensis and were supplemented per day, with 1.5% kg live weight per animal feed. Heifers were divided into 2 groups, T1: with the use of rbST and T2: unused rbST (control). The rbST was applied every 14 days at a dose of 500 mg per animal. For the statistical analysis, the results were submitted to analysis of variance (ANOVA) at 5% significance level. There was no significant difference (p> 0.05) for average initial body weight, average final body weight, total average gain and average daily gain, and ribeye area (REA) adipose tissue thickness. Therefore the use of rbST did not promote change in performance characteristics in Nellore heifers 2 years old.

scholarly journals Effects of Genotype and Weaning Age Interaction on Growth Traits in Rabbits

2021 ◽  
Vol 11 (2) ◽  
pp. 249-256
Author(s):  
Mohamed Ragab ◽  
Saad Mohamed Mostfa ◽  
Khaled Hassan El-Kholy ◽  
Lamia M. Radwan ◽  
Abeer El-Shafie ◽  
...  
Keyword(s):  
Growth Traits ◽  
Average Daily Gain ◽  
Early Weaning ◽  
Positive Effects ◽  
Different Ages ◽  
Minimum Age ◽  
Weaning Age ◽  
Fattening Period ◽  
The Difference ◽  
Daily Gain

Weaning age is an important factor that affects the growth and health of weaned animals. Therefore, the current experiment was conducted to study genotype (G) and weaning age (WA) interaction (G×WA) effects on growth traits of the animals belonged to two lines of rabbits (APRI and V line) reared under Egyptian conditions. Multiparous doe rabbits were serviced to obtain 225 litters with 1800 young rabbits at weaning. The weaning ages ranged from 26 to 43 days where the young rabbits were weaned at different ages (≥28 days, WA1; 28 < Treatment ≥ 35 days, WA2; 35 < Treatment ≥ 40 day, WA3 and 40< Treatment, WA4). Body weight (BW) from 4 to 16 weeks of age and corresponding average daily gain (ADGt1-t2) were measured. The BW significantly increased in APRI rabbits, compared to those in V line at the different ages where at the end of the fattening period, the difference was 105 g per animal with higher ADG. Regarding the weaning age effects, positive effects were observed where the highest BW was observed at the fattening period. The ADG of rabbits weaned in late weaning was higher than in early weaning with significant differences. The observed results suggest the existence of relevant G×WA interaction for the investigated traits. Therefore, the weaning age of 29-35 days is recommended for young APRI rabbits while it is suggested to wean the V rabbits after 35 days. The study confirmed that early weaning is not preferable for the rabbit under Egyptian conditions and it is better to wean young rabbits at the minimum age of 30 days to achieve the best BW and growth rate.

Short communication: The genotype of growth hormone gene that affects the birth weight and average daily gain in crossbred beef cattle

2020 ◽  
Vol 21 (3) ◽  
Author(s):  
Tety Hartatik ◽  
AHMAD FATHONI ◽  
SIGIT BINTARA ◽  
ISMAYA ◽  
PANJONO ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Birth Weight ◽  
Beef Cattle ◽  
Short Communication ◽  
Growth Traits ◽  
Average Daily Gain ◽  
Growth Hormone Gene ◽  
Production Traits ◽  
Significant Difference ◽  
Daily Gain

Abstract. Hartatik T., Fathoni A, Bintara S., Ismaya, Panjono, Widyobroto B.P, Agus A, Budisatria I.G.S, Leroy P. 2020. Short communication: The genotype of growth hormone gene that affects the birth weight and average daily gain in crossbred beef cattle. Biodiversitas 21: 941-945. Growth Hormone gene has been proposed to direct search for quantitative trait loci, and polymorphisms at these loci have been associated with several production traits in bovine. This research aimed to investigate the association of the genotype of partial growth hormone gene with birth weight and average daily gain in crossbred beef cattle. The materials of this research consist of 47 samples from four different breeds. Birth weight was measured just after calving delivery from the mother. The average daily gain was calculated from the period since birth weight to the second weight (90 days). Genotyping of the growth hormone gene was determined by the sequencing and PCR-RFLP method with the AluI restriction enzyme. The association between genotype and growth traits data was analyzed using analysis of variance (ANOVA) by RStudio version 1.1.383. The results showed the significantly different (P<0.001) in birth weight and average daily gain according to the different breed. Friesian Holstein breed showed the highest birth weight, followed by Belgian Blue Bull cross and others. The genotype valine/valine only occurs in Belgian blue bull cross and Wagyu bull cross cattle and showed moderate birth weight. Genotype affects birth weight significantly (P<0.001). The birth weight for genotype leucine/leucine, leucine/valine, and valine/valine was 34.82±18.13, 25.31±13.10, and 29.35±13.65, respectively. There was no significant difference in average daily genes according to the different genotypes. In conclusion, the growth hormone gene was probably one of the molecular genetics markers for excellent growth traits in different crossbred beef cattle.

PSIV-B-24 Late-Breaking: Effect of initial body weight variation on growth performance of finishing Nellore cattle

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 322-323
Author(s):  
Michael D Sandes ◽  
Rafahel Souza ◽  
Guilherme Menezes ◽  
Rogério Souza ◽  
Carly A Hoffmann ◽  
...  
Keyword(s):  
Body Weight ◽  
Average Daily Gain ◽  
High Volume ◽  
Feed Conversion ◽  
Initial Weight ◽  
Initial Body Weight ◽  
Weight Variation ◽  
Significant Difference ◽  
Nellore Cattle ◽  
Daily Gain

Abstract The increased number of beef cattle entering feedlot operations in Brazil has increased, thus leading to increased productivity, livestock density rate, and improved carcass traits. The age and condition in which animals enter the feedlot is often neglected and may result in increased pen heterogeneity and might impact the growth development of the animals. The objective of this study was to evaluate the effect of the initial weight variation indicator (IWVI) on confined Nellore breeds on productive performance. A total of 382 pens (38,850 animals) were evaluated for 90 days. The variables evaluated were (IWVI), average daily gain (ADG), gain efficiency (G:F) and net feed conversion (nFC). The experimental design was determined by the amplitude of the mean and high volume of homogeneity. A non-parametric analysis was performed using the Kruskal-Wallis test for the comparison of groups, and there was a significant difference using the Mann-Whitney test for the comparison of experimental groups 2 to 2. Significance was determined at (P &lt; 0.017). The highest ADG was 1.59 kg, observed for the pens with lower IWVI. The lowest ADG was 1.46 kg, observed in the pens with higher IWVI. The lower IWVI showed higher G:F (6.36) and nFC (131.01 kg) compared to more variable initial weight pens (1.82 and 148.09 kg, respectively). Lower initial weight variations per pen had a positive effect on average daily gain, gain efficiency and net feed conversion. Initial body weight variation seems to be an important factor feedlots should consider upon Nellore cattle arrival.

scholarly journals Participatory Silage Making and Hay and Silage Mixed Feeding Technology for Winter Feeding to Goats in Jumla, Nepal

2018 ◽  
Vol 35 ◽  
pp. 47-54
Author(s):  
R.R. Gyawali ◽  
S. Yadav ◽  
D. Yadav
Keyword(s):  
Body Weight ◽  
Treatment Group ◽  
Body Weight Gain ◽  
Average Daily Gain ◽  
The Body ◽  
Final Body Weight ◽  
Control Male ◽  
The Difference ◽  
Silage Production ◽  
Daily Gain

This action research was carried out to demonstrate the method of silage making and its feeding, mixed with chopped hay to goats during feed scarcity periods as coping strategy for winter days in Jumla. Nine farmers took part in on-farm silage production and feeding trial. A total of 29 kids and 16 does as treatment group and 12 kids and 19 does of the similar age group and status as control were selected to compare the body weight gain. The normal practice of feeding was 3-4 hours of grazing daily, occasionally combined with tree fodder (Quercus sp.) in communal pastureland and offering hay for snowfall days in pens. In addition to this, treatment groups were supplemented with mixed silage and chopped hay at the rate of 2% of body weight on dry matter basis, half each from the silage and hay. The mixture was given daily early in the morning for 45 days from 25th of December to 10th of February, when the average minimum temperature dropped from -2.4 to -5.4° C. Goats consumed about 95% of the offered amount of silage whereas chopped hay was rejected by about 90%. The result showed that kids gained 0.49 kg with average daily gain of 10.88 g and does gained 2.44 kg with an average daily gain of 54.22 g for the treatment group. The difference between the initial and final body weight was positive for treatment group whereas it was negative for the control. Male kids grew faster by 8.6%, female kids by 6.7% and does by 12.6% for silage supplemented group compared to control. It indicated that proper fermented maize fodder silage can be obtained from pits prepared before winter and loss in body weight can be prevented by the supplementation of silage during cold days in high mountains when there is scarce of green forages.

Impact of mother genetic and resource environment on her offspring’s growth features in Munjal sheep

Zygote ◽  
2022 ◽  
pp. 1-6
Author(s):  
Ankit Magotra ◽  
Yogesh C. Bangar ◽  
Ashish Chauhan ◽  
Abhay Singh Yadav ◽  
Zile Singh Malik
Keyword(s):  
Body Weight ◽  
Maternal Effects ◽  
Growth Traits ◽  
Average Daily Gain ◽  
Genetic Progress ◽  
Weaning Age ◽  
Genetic And Phenotypic Correlations ◽  
Growth Features ◽  
Daily Gain

Summary The present study evaluated maternal and additive influences that contribute to phenotypic variation in various growth traits in Munjal sheep. The targeted traits that pertained to 2278 records of 706 lambs were birth weight (BWT), weaning weight (WT3), 6-month body weight (WT6), 12-month body weight (WT12), average daily gain (ADG1: 0–3 months; ADG2: 3–6 months, ADG3: 6–12 months of age) and their corresponding Kleiber ratios designated as KR1, KR2 and KR3. The direct heritability estimates for BWT, WT3, WT6, WT12, ADG1, ADG2, ADG3, KR1, KR2 and KR3 under animal models were 0.20 ± 0.08, 0.28 ± 0.08, 0.17 ± 0.07, 0.47 ± 0.09, 0.33 ± 0.08, 0.09 ± 0.06, 0.36 ± 0.10, 0.33 ± 0.08, 0.09 ± 0.06 and 0.32 ± 0.10, respectively. The estimates of maternal genetic effects contributed significantly and were 8% and 7% for BWT and WT3 traits, respectively, which highlighted the considerable role of maternal effects on early growth traits. Genetic and phenotypic correlations ranged from moderate to high between weaning and post-weaning traits. It was concluded that early selection that considered additive as well as maternal effects at weaning age may be delivered to the desired genetic progress in Munjal sheep.

scholarly journals Use of Rice Straw and Black Gram Straw in Fodder Based Goat's Diets in the Hills of Nepal

2014 ◽  
Vol 8 ◽  
pp. 82-87
Author(s):  
Chet R. Upreti ◽  
Bahadur S. Kuwar ◽  
Shambhu. B. Panday
Keyword(s):  
Body Weight ◽  
Rice Straw ◽  
Average Daily Gain ◽  
Basal Diet ◽  
Diet Group ◽  
Black Gram ◽  
Significant Difference ◽  
Fodder Tree ◽  
Daily Gain ◽  
Tree Foliage

The aim of this study was to investigate the possible use of crop residue such as rice straw and black gram straw (Kushauro) in hill goats’ diet. Twenty male and female goats of age 6- 9 months were divided into 4 dietary groups. Animal of first diet groups (D1) were fed with fodder leaves (Khanyu) only, second diet group (D2) with 20% rice straw + fodder tree foliage, third diet group (D3) with 20% rice straw + fodder tree foliage + concentrate @ 1% of body weight, and fourth diet group (D4) fodder tree foliage + 15% rice straw + 5% black gram straw + concentrate @ 1% of body weight meet to the daily requirement. These rations were fed to animals of individual diet group for 150 days. Daily feed intake, daily weight change was recorded. Body weight was taken at the beginning of the experiment, at the end of experiment and 15 days interval. The result showed that there was significant difference (P <0.05) between different dietary groups for average daily gain (ADG). The highest ADG was observed in D3 (19.6±4.33), followed by D2 (12.67±1.38 g/d) and D4 (11.73±1.78 g/d). The lowest ADG was found in D1 (10.8±1.87 g/d). The result indicated that 20% rice straw can be used in goat diet with supplementary diet of concentrate @ 1% of body weight, and foliage of Khanyu as a basal diet. Feeding only fodder tree foliage is not suitable to get higher ADG in stall-feeding management.Nepal Agric. Res. J. Vol. 8, 2007, pp. 82-87DOI: http://dx.doi.org/10.3126/narj.v8i0.11595

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