GENETIC EVALUATION FOR FRIESIAN CATTLE IN EGYPT USING SINGLE-TRAIT ANIMAL MODEL
E.
Oudah
Department of Animal Production, Faculty of Agriculture, Mansoura University, PC: 35516, Al Mansoura, Egypt.
author
Zainab
Khalefa
Animal Production Research Institute, Ministry of Agriculture, Dokki, Giza, Egypt.
author
text
article
2010
eng
A total number of 1011 first lactation records of Friesian cows daughters of 705 dams and 103 sires for a period of 19 years raised at Agricultural Research Station, Sakha, Kafr El-Sheikh Province, belonging to Animal Production Research Institute, Ministry of Agriculture, Egypt were used to evaluate the genetic parameters of total milk yield (TMY), 305-day milk yield (305-dMY), lactation period (LP), age at first calving (AFC), number of service per conception (NOS), calf birth weight (BW) and calf weaning weight (WW) as well as estimating breeding values (BV) of animals using single-trait animal model. Data were analyzed using Multi-trait Derivative Free Restricted Maximum Likelihood (MTDFREML) Program to calculate the genetic parameters and BV. Statistical Analysis System (SAS) was utilizing to investigate the effect of fixed effects on these traits using mixed model procedure. Means (± SD) of TMY, 305-dMY, LP, AFC, NOS, BW and WW were 2653±1191, 2338±864 kg, 332±107 days, 31.8±5.8 months, 2.25±1.80, 29±4.26 and 95±10.5 kg, respectively. Heritability estimates (h2) for the same traits were 0.07, 0.27, 0.12, 0.04, 0.25, 0.19 and 0.06, respectively. The range of BV for all animals was -2.64 to 2.95, -3.43 to 5.62 kg, -3.41 to 6.44 days, -4.01 to 7.94 months, -2.77 to 3.34, and -2.12 to 1.62 kg, respectively. Spearman rank correlations and Pearson correlations between estimated breeding values of all animals in pedigree (cows, dams and sires) provided by the genetic analysis ranged between 0.19–0.99. Rank correlations of animals between traits were the lowest for reproduction traits. It could be concluded that improving the environment conditions will improve these traits. Also, with the moderate h2 and the wide range in BV between animals regarding to 305-dMY and AFC will help in improving these traits genetically.
Journal of Animal and Poultry Production
Mansoura University, Faculty of Agriculture
2090-3642
1
v.
9
no.
2010
371
381
https://jappmu.journals.ekb.eg/article_86242_d996b4c5997c44b1b7c6b2aefb7c4ece.pdf
dx.doi.org/10.21608/jappmu.2010.86242
THE CALCIUM, PHOSPHORUS AND MAGNESIUM STATUS OF OSSIMI EWES AND THEIR NEWBORNS, AT PARTURITION AND EARLY LACTATION, RAISED UNDER INTENSIVE AND SEMI-INTENSIVE SYSTEMS IN UPPER EGYPT
A.
Baiomy
Animal Production Department, Faculty of Agriculture, South Valley University, Qena, Egypt .
author
text
article
2010
eng
The present study was carried out at the Experimental farm of Animal Production Department, Faculty of Agriculture, SouthValleyUniversity, Qena during the period from October to December 2009. A field study was conducted to evaluate the Calcium, Phosphorus and Magnesium status of Ossimi ewes and their lambs at parturition and early lactation raised under intensive and Semi-intensive systems in upper Egypt. Forty Ossimi Ewes of 3 to 3.5 years age were selected randomly from a herd, at parturition. The animals were devided into two equal groups the first group was raised under intensive system fed concentrate ration and the second was raised under Semi–intensive system grazed natural pasture and by-product. Blood samples from ewes and their newborns were taken at parturition, 30 and 60 days postpartum. Moreover, milk samples were collected at time of blood sampling. Samples were prepared and analyzed for Calcium and Magnesium by AAS and Phosphorus by Spectrophotometer.
A significant different (P<0.01) was found in Ca concentration in blood serum of ewes in group 1 only at 30 days postpartum compared with group 2. The levels of serum Ca of ewes’ in-group 2 were below the normal level especially at 30 days postpartum. Phosphorus concentrations in serum of ewes and the newborns in both groups were adequate throughout early lactation. Magnesium concentration in blood serum of ewes and their lambs in group1 were significantly (P< 0.05) higher and adequate at parturition and early lactation compared with ewes from group 2. The milk Ca% in-group1 were significantly higher (P< 0.01) at parturition and 60 days postpartum, as well as the P% at parturition and 30 days postpartum (P< 0.05), while Mg% was only at parturition (P< 0.01). Milk DM% of ewes in-group 1 were significantly (P< 0.01) higher compared with group 2 at parturition and at 60 days postpartum (P< 0.001), while OM% was only at 60 day postpartum (P< 0.001).
Journal of Animal and Poultry Production
Mansoura University, Faculty of Agriculture
2090-3642
1
v.
9
no.
2010
383
393
https://jappmu.journals.ekb.eg/article_86243_3d78bbd4a4f2908a934aeb314b89ace1.pdf
dx.doi.org/10.21608/jappmu.2010.86243
EFFECT OF POLLUTION BY MERCURY, CADMIUM AND LEAD ON REPRODUCTION of TILAPIA NILOTICA FISH
Amal
Ahmed
Regional Center for Foods and Feeds, Agric. Res. Center, Ministry of Agric., Giza, Egypt.
author
A
Gomaa
Regional Center for Foods and Feeds, Agric. Res. Center, Ministry of Agric., Giza, Egypt.
author
T.
El-Afifi
Regional Center for Foods and Feeds, Agric. Res. Center, Ministry of Agric., Giza, Egypt.
author
text
article
2010
eng
A total of 96 juvenile and 288 mature male and female Tilapia nilotica were exposed to mercury (Hg), cadmium (cd) and lead (Pb) pollution. The effects of such substances on some reproductive parameters were studied. The obtained results in mature treated fish revealed that the gonadosomatic index (GSI)decreased in the females after three weeks in cd and Pb exposed groups while in males a significant decrease in cd treated group and increase in lead treated group was recorded. The sperm count, motility and its duration as well as fecundity showed significant decreases in all treated groups. Concerning Estradiol 17 and Testosterone, a significant decrease in each of gonads and skeletal muscles of treated males and females were observed. On the other hand, high mortality rate and retarded gonadal development in the juvenile fish were recorded.
Journal of Animal and Poultry Production
Mansoura University, Faculty of Agriculture
2090-3642
1
v.
9
no.
2010
395
407
https://jappmu.journals.ekb.eg/article_86245_928d03c8bbe7bd17f0e82e4624567ac7.pdf
dx.doi.org/10.21608/jappmu.2010.86245
IMPROVING THE SURVIVAL RATE OF AFRICAN CATFISH, Clarias gariepinus
A.
Abdelhamid
Animal Production Dept., Faculty of Agric., Al_Mansoura University
author
I.
Radwan
Egyptian Aquaculture Centre, Kafr El-Sheikh, Egypt
author
A.
Mehrim
Animal Production Dept., Faculty of Agric., Al_Mansoura University
author
text
article
2010
eng
A field study was conducted to alleviate the cannibalism phenomena among the African catfish, Clarias gariepinusfryvia periodical grading to eliminate the number of jumpersfry. There were significant differences among treatments in favor of T1 (control without grading) at the 4th week. However, the middle frequency of grading (T2: grading each 3 days) realized the best survival rate (SR) of 49.17 % after 4 weeks and the highest fry body weight at the 2nd week. So, with middle labor (grading the newly hatched fry every 3 days) and economic efforts without great stress on the fry, man can elevate the SR by 41 and 27 times than without grading (T1) or grading each 7days (T3), respectively. So, the economic efficacy (from selling the fry) could be improved by the same rate.
Journal of Animal and Poultry Production
Mansoura University, Faculty of Agriculture
2090-3642
1
v.
9
no.
2010
409
414
https://jappmu.journals.ekb.eg/article_86246_c863f1a424b8879db4bb1e35222e0838.pdf
dx.doi.org/10.21608/jappmu.2010.86246
العلاقة بين مستوى الناقلية الکهربائية ومؤشرات إنتاج الحليب الأخرى في الماعز الشامي بمحافظة القنيطرة
أسامة
دياب
قسم الإنتاج الحيواني- کلية الزراعة جامعة دمشق، ص.ب 30621- دمشق- سورية.
author
شحادة
قصقوص
قسم الإنتاج الحيواني- کلية الزراعة جامعة دمشق، ص.ب 30621- دمشق- سورية.
author
جمال
سکوتي
قسم الإنتاج الحيواني- کلية الزراعة جامعة دمشق، ص.ب 30621- دمشق- سورية.
author
text
article
2010
eng
تمت هذه الدراسة في محافظة القنيطرة – مديرية الإنتاج الحيواني خلال عام 2009 بهدف معرفة العلاقة ما بين مستوى الناقلية الکهربائية ومؤشرات إنتاج الحليب الأخرى في الماعز الشامي. استخدم لهذا الغرض 20 عنزة شامية منتجة للحليب في مواسم حلابة من الأول وحتى الرابع. قيس مستوى الناقلية الکهربائية من السحبات الأولى مباشرة قبل الحلابة الصباحية خلال مرحلة الرضاعة وقبل الحلابة الصباحية والمسائية خلال مرحلة الحلابة وذلک من کل نصف ضرع على حدة .
قدرت کمية الحليب اليومية الناتجة خلال موسم إنتاج الحليب وأخذت عينات منها بمعدل 50 مل ممثلة لکامل کمية الحليب الکلية الناتجة ومن کل عنزة وذلک لتقدير مرکبات الحليب الأساسية من الدهن والبروتين والسکر والمادة الجافة اللادهنية والحموضة والکثافة والمادة الجافة الکلية. تم تجميع البيانات وحللت إحصائياً بتحليل التباين لقياسات متکررة باستخدام برنامج SPSS. بلغ متوسط مستوى الناقلية الکهربائية للحليب الناتج نحو 6.33 مس/سم.کما بلغ متوسط کمية الحليب اليومية لعنزات الدراسة 1564.2 (غ) فيما بلغت کمية الحليب الکلية خلال موسم الحلابة 350.4 (کغ). أما مؤشرات إنتاج الحليب الأخرى من الدهن والبروتين والسکر والمعادن والمادة الجافة اللادهنية والمادة الجافة الکلية والکثافة والحموضة فقد بلغت 3.95 % و 3.37 % و 4.53% و 0.69 % و 8.64 % و 012.6 % و 1.03 (غ/مل) و 6.76 على التوالي. بينت نتائج التحليل الإحصائي أيضاً وجود علاقة ارتباط سلبية و معنوية ما بين مستوى الناقلية الکهربائية في عينات الحليب المختبرة ومؤشرات إنتاج الحليب من کمية الحليب الکلية والدهن والبروتين واللاکتوز والمعادن والمادة الجافة اللادهنية والمادة الجافة الکلية والکثافة فقد بلغت قيم الارتباط ( r = - 0.09 ، p < 0.05 ؛r = -0.37 ،p<0.01 ،r = -0.38 ،p<0.01 ؛r = -0.28 ،p<0.01 ؛r = -0.39 ،p<0.01 ؛r = -0.19 ،p<0.01 ؛r = -0.35 ،p<0.01 ؛r = -0.17 ،p<0.01 ) على التوالي،في حين کانت العلاقة مابين مستوى الناقلية الکهربائية وحموضة الحليب سلبية ضعيفة وغير معنوية وبلغت قيمتها (p>0.05, r =- 0.05).
Journal of Animal and Poultry Production
Mansoura University, Faculty of Agriculture
2090-3642
1
v.
9
no.
2010
415
424
https://jappmu.journals.ekb.eg/article_86248_c9cefdd7656e68fb68960c0dbd827653.pdf
dx.doi.org/10.21608/jappmu.2010.86248
ASSESSMENT SOME FEEDING PACKAGES ON FARM REVENUE OF FATTENING FRIESIAN CALVES IN THE DELTA REGION OF EGYPT
M.
Khalil
Animal Production Research Institute, Agric. Res. Center, Ministry of Agriculture, Dokki, Giza, Egypt.
author
H.
El-Nahas
Animal Production Research Institute, Agric. Res. Center, Ministry of Agriculture, Dokki, Giza, Egypt.
author
M.
Tag El-Dein
Animal Production Research Institute, Agric. Res. Center, Ministry of Agriculture, Dokki, Giza, Egypt.
author
text
article
2010
eng
Two methods were used to assess six rations Linear Program Model (LPM) and actual feeding trials (validation). The six rations tested by LPM represented as six scenarios; three winter scenarios WS1 (control) (Egyptian clover + concentrate mixture + rice straw), scenario 2 (WS2) where ration had two constrains using corn silage and Egyptian clover at the rate of 6 kg and 10 kg daily, respectively, plus concentrate mixture and rice straw ad-libitum. Scenario 3 (WS3) was the same as WS2 but constrain was to double corn silage quantity. The three summer scenarios were: Scenario 4 (SS4 control) (Egyptian clover hay + concentrate mixture + rice straw), Scenario 5 (SS5) had two constrains use Egyptian clover silage and corn silage at the rate of 5 kg daily plus concentrate mixture and ad-libitum rice straw. Scenario 6 (SS6) was as the same as SS5 with the only constrain to replace the corn silage by 5 kg sugar beet tops silage. All rations had to cover the feed requirements of 1 kg daily gain according NRC. Extra revenues realized for winter were L.E. 2.50 and 3.10 for WS2 and WS3 compared to WS1. Summer results showed increase in farm revenue of L.E. 1.44 and 0.78, for SS5 and SS6 compared to SS4.
The previous winter or summer six scenarios that evaluated by LPM were reevaluated by real feeding trials on Friesian fattening calves as six rations with the same feeding packages. All rations had to cover the feed requirements of 1 kg daily gain according NRC. Extra revenues realized for winter rations were L.E. 2.33 and 1.37/head/day for two winter groups (WG2) and WG3 compared to WG1 respectively. The summer rations showed increase in farm revenue of L.E. 2.16 and 2.26/head/day for SG5 and SG5 compared to SG4 respectively. It could be concluded that using feeding packages in animal feeding can reduce feeding costs and improve the fattening farm revenue.
Journal of Animal and Poultry Production
Mansoura University, Faculty of Agriculture
2090-3642
1
v.
9
no.
2010
425
440
https://jappmu.journals.ekb.eg/article_86249_17eef5327135a1a8a7f4328a588db988.pdf
dx.doi.org/10.21608/jappmu.2010.86249