ESTIMATION OF GENETIC AND PHENOTYPIC TREND OF TOTAL MILK YIELD OF EGYPTIAN BUFFALO RAISED AT EXPERIMENTAL FARM IN EGYPT
S.
Mohamed
Animal Production Department, Faculty of Agriculture, Cairo University, Giza, Egypt
author
Heba
Mostafa
Animal Production Research Institute, Ministry of Agriculture and Land Reclamation, Egypt.
author
Mahasen
Abdel-Aziz
Animal Production Research Institute, Ministry of Agriculture and Land Reclamation, Egypt.
author
S.
Abdel-Salam
Animal Production Department, Faculty of Agriculture, Cairo University, Giza, Egypt
author
M.
Ibrahim
Animal Production Department, Faculty of Agriculture, Cairo University, Giza, Egypt
author
R
Sadek
Animal Production Department, Faculty of Agriculture, Cairo University, Giza, Egypt
author
text
article
2010
eng
The objective of this study was to estimate the genetic and phenotypic trend of total milk yield (TMY) of Egyptian buffalo. A total number of 3005 test day milk records for 401 Egyptian buffaloes, daughters of 54 sire covered the period from 1991 to 2002 were used in this study. Data were collected from Mahllet Mousa and El- Nattaf El-Kadeem farms in Kafr El-Sheikh. The two farms belong to Animal Production Research Institute, Ministry of Agriculture and Land Reclamation, Egypt.
The data were analyzed using the Least squares technique to examine the effects of year-season of calving, herd and parity on total milk yield.
The effects of year-season of calving, herd, and parity on TMY were all highly significant (P>0.001). The average TMY was 1429 Kg. The heritability estimate of TMY was 0.25. The regression of TMY on year of calving showed a positive trend (+67 kg per year of calving). Also, genetic trend was positive (+12.55kg per year of birth). In conclusion, although the trend in the estimated breeding values was positive, it still did not lead to adequate change required in the average milk production due, probably, to inadequate feeding and/or impaired management of the herds.
Journal of Animal and Poultry Production
Mansoura University, Faculty of Agriculture
2090-3642
1
v.
7
no.
2010
275
281
https://jappmu.journals.ekb.eg/article_86228_925df4121f27d9a5beb234ef0126ed31.pdf
dx.doi.org/10.21608/jappmu.2010.86228
EFFECT OF EARLY AND LATE CASTRATION ON ODOR GLANDS AND SKIN CHARACTERISTICS IN MALE BALADI GOATS
A
Abdel-Moneim
Dept. Animal Production, Fac. Agric., Cairo Univ., Giza- Egypt
author
Kh.
Mazher
Dept. Cytology and Histology, Fac. Veterinary Medicine, Beni-Suef Univ., Beni-Suef , Egypt
author
text
article
2010
eng
Skin samples of five body regions (parietal, shoulder, mid-side, coxal tuber and perianal ) were collected from nine male Baladi goats aged 16 months. The influences of body region and age of castration (early 2-week versus late 6– month of age ) on odor glands, hair follicles and epidermis were examined and tested. Skin from parietal region of kids exhibited significantly (P<0.05) the highest density of follicles ( 55.8 / mm2), among the other body regions. Whereas, parietal (1.7) and shoulder (1.5) regions were lower in S/P ratio than mid-side, coxal tuber (2.5 for each) and perianal ( 3, P<0.05 ) regions. Body region had a highly significant (P < 0.01) effect on density of sweat glands and sebaceous glands. The highest density of sweat glands was found in parietal region (14.8 / mm 2 ). Though the density of sebaceous glands in parietal region (26.0 / mm2) ranked the second after perianal region (36.6 / mm2), their size was larger in parietal region than in other body regions. Two-week castrated kids had significantly (P <0.05) less density of sweat glands than entire kids. However, the difference between entire kids and 6 – month castrates in sweat glands density was insignificant (P>0.05). As well, 2–week castrated kids had the lowest density of sebaceous glands compared with entire kids and 6 – month castrated ones. Histologically, the parietal glands of entire kids appeared highly modified and larger occupying the major part of the dermis with marked secretory activity than other regions as well as castrated kids. Sweat and sebaceous glands in parietal region of Baladi bucks are the major source of buck odor. Furthermore, the attained results revealed that castration of kids at an early age of life (2-weeks of age) plays an important role in reducing male odor.
Journal of Animal and Poultry Production
Mansoura University, Faculty of Agriculture
2090-3642
1
v.
7
no.
2010
283
299
https://jappmu.journals.ekb.eg/article_86232_c9a8d2245acd37914f11e126a37c5dcd.pdf
dx.doi.org/10.21608/jappmu.2010.86232
AFLATOXICOSIS IN POULTRY: 1- EFFICACY OF HYDRATED SODIUM CALCIUM ALUMINOSILICATE AND YEAST CELL WALL TO AMELIORATE THE ADVERSE EFFECTS OF AFLATOXIN ON BROILER PERFORMANCE
M.
Shebl
Regional Center for Food and Feed, Agric. Res. Center, Giza, Egypt.
author
H.
Motawe
Regional Center for Food and Feed, Agric. Res. Center, Giza, Egypt.
author
T.
Yehia
Regional Center for Food and Feed, Agric. Res. Center, Giza, Egypt.
author
Amal
Abo Hagger
Regional Center for Food and Feed, Agric. Res. Center, Giza, Egypt.
author
text
article
2010
eng
Hydrated Sodium Calcium Aluminosilicate (HSCAS) and Yeast (Saccharomyces cerevisiae) cell wall (YCW) were evaluated for their ability to reduce the deleterious effects of aflatoxin (AFT) on broiler performance. They were incorporated singly or in combination into a diet containing total AFT 211.88 µg / kg feed . No significant changes was recorded in all tested parameters ,body weight ( BW ), body weight gain ( BWG) , feed intake (FI) and feed conversion ( FC) ratio during starter period . In growing period ,treated groups showing significant elevation in some recorded parameter , that in contrast with each other or with control groups . In finisher periods , however no detectable pattern for changes was recorded , but the group which treated with HSCAS only showing significant depletion in both BWG and FI , while that treated with it in AFT- contaminated diet showing significant elevation . The same significant elevation was recorded in BW ,BWG and FI for groups which treated with YCW , while liver weight of this groups was significantly decreased in relation to other groups .The highest mortality rate was recorded in group treated with AFT only , and that which treated with AFT and YCW . The highest level of aflatoxin residue in litter of broiler was recorded in litter of group which treated with HSCAS singly, while the lowest was in group treated with YCW only. The levels of micro-elements Al , As , Cd , Pd , Se , Cu, Fe ,Mn, Zn and macro-elements k , Na ,Mg in broiler litter of different tested groups were also affected . The present study concluded that, no clear improvements in the tested parameters were recorded after the the contaminated diets were incorporated with the tested dose of HSCAS and YCW , singly or in combination ,during aflatoxicosis . Also , in part , focused the unwanted behavioral of adsorbents in animal production, and submitted that the using of this materials in animal feed must be restricted , because of its unknown undesired effects , as well as its indirect dangerous effect in livestock.
Journal of Animal and Poultry Production
Mansoura University, Faculty of Agriculture
2090-3642
1
v.
7
no.
2010
301
316
https://jappmu.journals.ekb.eg/article_86234_8206167a05ed4a94c878631f9c16490b.pdf
dx.doi.org/10.21608/jappmu.2010.86234